/*************************************************************************/ /* shader_language.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ /* "Software"), to deal in the Software without restriction, including */ /* without limitation the rights to use, copy, modify, merge, publish, */ /* distribute, sublicense, and/or sell copies of the Software, and to */ /* permit persons to whom the Software is furnished to do so, subject to */ /* the following conditions: */ /* */ /* The above copyright notice and this permission notice shall be */ /* included in all copies or substantial portions of the Software. */ /* */ /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /*************************************************************************/ #include "shader_language.h" #include "os/os.h" #include "print_string.h" static bool _is_text_char(CharType c) { return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '_'; } static bool _is_number(CharType c) { return (c >= '0' && c <= '9'); } static bool _is_hex(CharType c) { return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'); } String ShaderLanguage::get_operator_text(Operator p_op) { static const char *op_names[OP_MAX] = { "==", "!=", "<", "<=", ">", ">=", "&&", "||", "!", "-", "+", "-", "*", "/", "%", "<<", ">>", "=", "+=", "-=", "*=", "/=", "%=", "<<=", ">>=", "&=", "|=", "^=", "&", "|", "^", "~", "++", "--", "?", ":", "++", "--", "()", "construct", "index" }; return op_names[p_op]; } const char *ShaderLanguage::token_names[TK_MAX] = { "EMPTY", "IDENTIFIER", "TRUE", "FALSE", "REAL_CONSTANT", "INT_CONSTANT", "TYPE_VOID", "TYPE_BOOL", "TYPE_BVEC2", "TYPE_BVEC3", "TYPE_BVEC4", "TYPE_INT", "TYPE_IVEC2", "TYPE_IVEC3", "TYPE_IVEC4", "TYPE_UINT", "TYPE_UVEC2", "TYPE_UVEC3", "TYPE_UVEC4", "TYPE_FLOAT", "TYPE_VEC2", "TYPE_VEC3", "TYPE_VEC4", "TYPE_MAT2", "TYPE_MAT3", "TYPE_MAT4", "TYPE_SAMPLER2D", "TYPE_ISAMPLER2D", "TYPE_USAMPLER2D", "TYPE_SAMPLER2DARRAY", "TYPE_ISAMPLER2DARRAY", "TYPE_USAMPLER2DARRAY", "TYPE_SAMPLER3D", "TYPE_ISAMPLER3D", "TYPE_USAMPLER3D", "TYPE_SAMPLERCUBE", "INTERPOLATION_FLAT", "INTERPOLATION_NO_PERSPECTIVE", "INTERPOLATION_SMOOTH", "PRECISION_LOW", "PRECISION_MID", "PRECISION_HIGH", "OP_EQUAL", "OP_NOT_EQUAL", "OP_LESS", "OP_LESS_EQUAL", "OP_GREATER", "OP_GREATER_EQUAL", "OP_AND", "OP_OR", "OP_NOT", "OP_ADD", "OP_SUB", "OP_MUL", "OP_DIV", "OP_MOD", "OP_SHIFT_LEFT", "OP_SHIFT_RIGHT", "OP_ASSIGN", "OP_ASSIGN_ADD", "OP_ASSIGN_SUB", "OP_ASSIGN_MUL", "OP_ASSIGN_DIV", "OP_ASSIGN_MOD", "OP_ASSIGN_SHIFT_LEFT", "OP_ASSIGN_SHIFT_RIGHT", "OP_ASSIGN_BIT_AND", "OP_ASSIGN_BIT_OR", "OP_ASSIGN_BIT_XOR", "OP_BIT_AND", "OP_BIT_OR", "OP_BIT_XOR", "OP_BIT_INVERT", "OP_INCREMENT", "OP_DECREMENT", "CF_IF", "CF_ELSE", "CF_FOR", "CF_WHILE", "CF_DO", "CF_SWITCH", "CF_CASE", "CF_BREAK", "CF_CONTINUE", "CF_RETURN", "CF_DISCARD", "BRACKET_OPEN", "BRACKET_CLOSE", "CURLY_BRACKET_OPEN", "CURLY_BRACKET_CLOSE", "PARENTHESIS_OPEN", "PARENTHESIS_CLOSE", "QUESTION", "COMMA", "COLON", "SEMICOLON", "PERIOD", "UNIFORM", "VARYING", "IN", "OUT", "INOUT", "RENDER_MODE", "HINT_WHITE_TEXTURE", "HINT_BLACK_TEXTURE", "HINT_NORMAL_TEXTURE", "HINT_ANISO_TEXTURE", "HINT_ALBEDO_TEXTURE", "HINT_BLACK_ALBEDO_TEXTURE", "HINT_COLOR", "HINT_RANGE", "SHADER_TYPE", "CURSOR", "ERROR", "EOF", }; String ShaderLanguage::get_token_text(Token p_token) { String name = token_names[p_token.type]; if (p_token.type == TK_INT_CONSTANT || p_token.type == TK_REAL_CONSTANT) { name += "(" + rtos(p_token.constant) + ")"; } else if (p_token.type == TK_IDENTIFIER) { name += "(" + String(p_token.text) + ")"; } else if (p_token.type == TK_ERROR) { name += "(" + String(p_token.text) + ")"; } return name; } ShaderLanguage::Token ShaderLanguage::_make_token(TokenType p_type, const StringName &p_text) { Token tk; tk.type = p_type; tk.text = p_text; tk.line = tk_line; if (tk.type == TK_ERROR) { _set_error(p_text); } return tk; } const ShaderLanguage::KeyWord ShaderLanguage::keyword_list[] = { { TK_TRUE, "true" }, { TK_FALSE, "false" }, { TK_TYPE_VOID, "void" }, { TK_TYPE_BOOL, "bool" }, { TK_TYPE_BVEC2, "bvec2" }, { TK_TYPE_BVEC3, "bvec3" }, { TK_TYPE_BVEC4, "bvec4" }, { TK_TYPE_INT, "int" }, { TK_TYPE_IVEC2, "ivec2" }, { TK_TYPE_IVEC3, "ivec3" }, { TK_TYPE_IVEC4, "ivec4" }, { TK_TYPE_UINT, "uint" }, { TK_TYPE_UVEC2, "uvec2" }, { TK_TYPE_UVEC3, "uvec3" }, { TK_TYPE_UVEC4, "uvec4" }, { TK_TYPE_FLOAT, "float" }, { TK_TYPE_VEC2, "vec2" }, { TK_TYPE_VEC3, "vec3" }, { TK_TYPE_VEC4, "vec4" }, { TK_TYPE_MAT2, "mat2" }, { TK_TYPE_MAT3, "mat3" }, { TK_TYPE_MAT4, "mat4" }, { TK_TYPE_SAMPLER2D, "sampler2D" }, { TK_TYPE_ISAMPLER2D, "isampler2D" }, { TK_TYPE_USAMPLER2D, "usampler2D" }, { TK_TYPE_SAMPLER2DARRAY, "sampler2DArray" }, { TK_TYPE_ISAMPLER2DARRAY, "isampler2DArray" }, { TK_TYPE_USAMPLER2DARRAY, "usampler2DArray" }, { TK_TYPE_SAMPLER3D, "sampler3D" }, { TK_TYPE_ISAMPLER3D, "isampler3D" }, { TK_TYPE_USAMPLER3D, "usampler3D" }, { TK_TYPE_SAMPLERCUBE, "samplerCube" }, { TK_INTERPOLATION_FLAT, "flat" }, { TK_INTERPOLATION_NO_PERSPECTIVE, "noperspective" }, { TK_INTERPOLATION_SMOOTH, "smooth" }, { TK_PRECISION_LOW, "lowp" }, { TK_PRECISION_MID, "mediump" }, { TK_PRECISION_HIGH, "highp" }, { TK_CF_IF, "if" }, { TK_CF_ELSE, "else" }, { TK_CF_FOR, "for" }, { TK_CF_WHILE, "while" }, { TK_CF_DO, "do" }, { TK_CF_SWITCH, "switch" }, { TK_CF_CASE, "case" }, { TK_CF_BREAK, "break" }, { TK_CF_CONTINUE, "continue" }, { TK_CF_RETURN, "return" }, { TK_CF_DISCARD, "discard" }, { TK_UNIFORM, "uniform" }, { TK_VARYING, "varying" }, { TK_ARG_IN, "in" }, { TK_ARG_OUT, "out" }, { TK_ARG_INOUT, "inout" }, { TK_RENDER_MODE, "render_mode" }, { TK_HINT_WHITE_TEXTURE, "hint_white" }, { TK_HINT_BLACK_TEXTURE, "hint_black" }, { TK_HINT_NORMAL_TEXTURE, "hint_normal" }, { TK_HINT_ANISO_TEXTURE, "hint_aniso" }, { TK_HINT_ALBEDO_TEXTURE, "hint_albedo" }, { TK_HINT_BLACK_ALBEDO_TEXTURE, "hint_black_albedo" }, { TK_HINT_COLOR, "hint_color" }, { TK_HINT_RANGE, "hint_range" }, { TK_SHADER_TYPE, "shader_type" }, { TK_ERROR, NULL } }; ShaderLanguage::Token ShaderLanguage::_get_token() { #define GETCHAR(m_idx) (((char_idx + m_idx) < code.length()) ? code[char_idx + m_idx] : CharType(0)) while (true) { char_idx++; switch (GETCHAR(-1)) { case 0: return _make_token(TK_EOF); case 0xFFFF: return _make_token(TK_CURSOR); //for completion case '\t': case '\r': case ' ': continue; case '\n': tk_line++; continue; case '/': { switch (GETCHAR(0)) { case '*': { // block comment char_idx++; while (true) { if (GETCHAR(0) == 0) { return _make_token(TK_EOF); } if (GETCHAR(0) == '*' && GETCHAR(1) == '/') { char_idx += 2; break; } else if (GETCHAR(0) == '\n') { tk_line++; } char_idx++; } } break; case '/': { // line comment skip while (true) { if (GETCHAR(0) == '\n') { tk_line++; char_idx++; break; } if (GETCHAR(0) == 0) { return _make_token(TK_EOF); } char_idx++; } } break; case '=': { // diveq char_idx++; return _make_token(TK_OP_ASSIGN_DIV); } break; default: return _make_token(TK_OP_DIV); } continue; //a comment, continue to next token } break; case '=': { if (GETCHAR(0) == '=') { char_idx++; return _make_token(TK_OP_EQUAL); } return _make_token(TK_OP_ASSIGN); } break; case '<': { if (GETCHAR(0) == '=') { char_idx++; return _make_token(TK_OP_LESS_EQUAL); } else if (GETCHAR(0) == '<') { char_idx++; if (GETCHAR(0) == '=') { char_idx++; return _make_token(TK_OP_ASSIGN_SHIFT_LEFT); } return _make_token(TK_OP_SHIFT_LEFT); } return _make_token(TK_OP_LESS); } break; case '>': { if (GETCHAR(0) == '=') { char_idx++; return _make_token(TK_OP_GREATER_EQUAL); } else if (GETCHAR(0) == '>') { char_idx++; if (GETCHAR(0) == '=') { char_idx++; return _make_token(TK_OP_ASSIGN_SHIFT_RIGHT); } return _make_token(TK_OP_SHIFT_RIGHT); } return _make_token(TK_OP_GREATER); } break; case '!': { if (GETCHAR(0) == '=') { char_idx++; return _make_token(TK_OP_NOT_EQUAL); } return _make_token(TK_OP_NOT); } break; //case '"' //string - no strings in shader //case '\'' //string - no strings in shader case '{': return _make_token(TK_CURLY_BRACKET_OPEN); case '}': return _make_token(TK_CURLY_BRACKET_CLOSE); case '[': return _make_token(TK_BRACKET_OPEN); case ']': return _make_token(TK_BRACKET_CLOSE); case '(': return _make_token(TK_PARENTHESIS_OPEN); case ')': return _make_token(TK_PARENTHESIS_CLOSE); case ',': return _make_token(TK_COMMA); case ';': return _make_token(TK_SEMICOLON); case '?': return _make_token(TK_QUESTION); case ':': return _make_token(TK_COLON); case '^': return _make_token(TK_OP_BIT_XOR); case '~': return _make_token(TK_OP_BIT_INVERT); case '&': { if (GETCHAR(0) == '=') { char_idx++; return _make_token(TK_OP_ASSIGN_BIT_AND); } else if (GETCHAR(0) == '&') { char_idx++; return _make_token(TK_OP_AND); } return _make_token(TK_OP_BIT_AND); } break; case '|': { if (GETCHAR(0) == '=') { char_idx++; return _make_token(TK_OP_ASSIGN_BIT_OR); } else if (GETCHAR(0) == '|') { char_idx++; return _make_token(TK_OP_OR); } return _make_token(TK_OP_BIT_OR); } break; case '*': { if (GETCHAR(0) == '=') { char_idx++; return _make_token(TK_OP_ASSIGN_MUL); } return _make_token(TK_OP_MUL); } break; case '+': { if (GETCHAR(0) == '=') { char_idx++; return _make_token(TK_OP_ASSIGN_ADD); } else if (GETCHAR(0) == '+') { char_idx++; return _make_token(TK_OP_INCREMENT); } return _make_token(TK_OP_ADD); } break; case '-': { if (GETCHAR(0) == '=') { char_idx++; return _make_token(TK_OP_ASSIGN_SUB); } else if (GETCHAR(0) == '-') { char_idx++; return _make_token(TK_OP_DECREMENT); } return _make_token(TK_OP_SUB); } break; case '%': { if (GETCHAR(0) == '=') { char_idx++; return _make_token(TK_OP_ASSIGN_MOD); } return _make_token(TK_OP_MOD); } break; default: { char_idx--; //go back one, since we have no idea what this is if (_is_number(GETCHAR(0)) || (GETCHAR(0) == '.' && _is_number(GETCHAR(1)))) { // parse number bool period_found = false; bool exponent_found = false; bool hexa_found = false; bool sign_found = false; bool minus_exponent_found = false; bool float_suffix_found = false; String str; int i = 0; while (true) { if (GETCHAR(i) == '.') { if (period_found || exponent_found || hexa_found || float_suffix_found) return _make_token(TK_ERROR, "Invalid numeric constant"); period_found = true; } else if (GETCHAR(i) == 'x') { if (hexa_found || str.length() != 1 || str[0] != '0') return _make_token(TK_ERROR, "Invalid numeric constant"); hexa_found = true; } else if (GETCHAR(i) == 'e') { if (hexa_found || exponent_found || float_suffix_found) return _make_token(TK_ERROR, "Invalid numeric constant"); exponent_found = true; } else if (GETCHAR(i) == 'f') { if (hexa_found || exponent_found) return _make_token(TK_ERROR, "Invalid numeric constant"); float_suffix_found = true; } else if (_is_number(GETCHAR(i))) { if (float_suffix_found) return _make_token(TK_ERROR, "Invalid numeric constant"); } else if (hexa_found && _is_hex(GETCHAR(i))) { } else if ((GETCHAR(i) == '-' || GETCHAR(i) == '+') && exponent_found) { if (sign_found) return _make_token(TK_ERROR, "Invalid numeric constant"); sign_found = true; if (GETCHAR(i) == '-') minus_exponent_found = true; } else break; str += CharType(GETCHAR(i)); i++; } CharType last_char = str[str.length() - 1]; if (hexa_found) { //hex integers eg."0xFF" or "0x12AB", etc - NOT supported yet return _make_token(TK_ERROR, "Invalid (hexadecimal) numeric constant - Not supported"); } else if (period_found || float_suffix_found) { //floats if (period_found) { if (float_suffix_found) { //checks for eg "1.f" or "1.99f" notations if (last_char != 'f') { return _make_token(TK_ERROR, "Invalid (float) numeric constant"); } } else { //checks for eg. "1." or "1.99" notations if (last_char != '.' && !_is_number(last_char)) { return _make_token(TK_ERROR, "Invalid (float) numeric constant"); } } } else if (float_suffix_found) { // if no period found the float suffix must be the last character, like in "2f" for "2.0" if (last_char != 'f') { return _make_token(TK_ERROR, "Invalid (float) numeric constant"); } } if (float_suffix_found) { //strip the suffix str = str.left(str.length() - 1); //compensate reading cursor position char_idx += 1; } if (!str.is_valid_float()) { return _make_token(TK_ERROR, "Invalid (float) numeric constant"); } } else { //integers if (!_is_number(last_char)) { return _make_token(TK_ERROR, "Invalid (integer) numeric constant"); } if (!str.is_valid_integer()) { return _make_token(TK_ERROR, "Invalid numeric constant"); } } char_idx += str.length(); Token tk; if (period_found || minus_exponent_found || float_suffix_found) tk.type = TK_REAL_CONSTANT; else tk.type = TK_INT_CONSTANT; tk.constant = str.to_double(); //wont work with hex tk.line = tk_line; return tk; } if (GETCHAR(0) == '.') { //parse period char_idx++; return _make_token(TK_PERIOD); } if (_is_text_char(GETCHAR(0))) { // parse identifier String str; while (_is_text_char(GETCHAR(0))) { str += CharType(GETCHAR(0)); char_idx++; } //see if keyword //should be converted to a static map int idx = 0; while (keyword_list[idx].text) { if (str == keyword_list[idx].text) { return _make_token(keyword_list[idx].token); } idx++; } return _make_token(TK_IDENTIFIER, str); } if (GETCHAR(0) > 32) return _make_token(TK_ERROR, "Tokenizer: Unknown character #" + itos(GETCHAR(0)) + ": '" + String::chr(GETCHAR(0)) + "'"); else return _make_token(TK_ERROR, "Tokenizer: Unknown character #" + itos(GETCHAR(0))); } break; } } ERR_PRINT("BUG"); return Token(); #undef GETCHAR } String ShaderLanguage::token_debug(const String &p_code) { clear(); code = p_code; String output; Token tk = _get_token(); while (tk.type != TK_EOF && tk.type != TK_ERROR) { output += itos(tk_line) + ": " + get_token_text(tk) + "\n"; tk = _get_token(); } return output; } bool ShaderLanguage::is_token_datatype(TokenType p_type) { return ( p_type == TK_TYPE_VOID || p_type == TK_TYPE_BOOL || p_type == TK_TYPE_BVEC2 || p_type == TK_TYPE_BVEC3 || p_type == TK_TYPE_BVEC4 || p_type == TK_TYPE_INT || p_type == TK_TYPE_IVEC2 || p_type == TK_TYPE_IVEC3 || p_type == TK_TYPE_IVEC4 || p_type == TK_TYPE_UINT || p_type == TK_TYPE_UVEC2 || p_type == TK_TYPE_UVEC3 || p_type == TK_TYPE_UVEC4 || p_type == TK_TYPE_FLOAT || p_type == TK_TYPE_VEC2 || p_type == TK_TYPE_VEC3 || p_type == TK_TYPE_VEC4 || p_type == TK_TYPE_MAT2 || p_type == TK_TYPE_MAT3 || p_type == TK_TYPE_MAT4 || p_type == TK_TYPE_SAMPLER2D || p_type == TK_TYPE_ISAMPLER2D || p_type == TK_TYPE_USAMPLER2D || p_type == TK_TYPE_SAMPLER2DARRAY || p_type == TK_TYPE_ISAMPLER2DARRAY || p_type == TK_TYPE_USAMPLER2DARRAY || p_type == TK_TYPE_SAMPLER3D || p_type == TK_TYPE_ISAMPLER3D || p_type == TK_TYPE_USAMPLER3D || p_type == TK_TYPE_SAMPLERCUBE); } ShaderLanguage::DataType ShaderLanguage::get_token_datatype(TokenType p_type) { return DataType(p_type - TK_TYPE_VOID); } bool ShaderLanguage::is_token_interpolation(TokenType p_type) { return ( p_type == TK_INTERPOLATION_FLAT || p_type == TK_INTERPOLATION_NO_PERSPECTIVE || p_type == TK_INTERPOLATION_SMOOTH); } ShaderLanguage::DataInterpolation ShaderLanguage::get_token_interpolation(TokenType p_type) { if (p_type == TK_INTERPOLATION_FLAT) return INTERPOLATION_FLAT; else if (p_type == TK_INTERPOLATION_NO_PERSPECTIVE) return INTERPOLATION_NO_PERSPECTIVE; else return INTERPOLATION_SMOOTH; } bool ShaderLanguage::is_token_precision(TokenType p_type) { return ( p_type == TK_PRECISION_LOW || p_type == TK_PRECISION_MID || p_type == TK_PRECISION_HIGH); } ShaderLanguage::DataPrecision ShaderLanguage::get_token_precision(TokenType p_type) { if (p_type == TK_PRECISION_LOW) return PRECISION_LOWP; else if (p_type == TK_PRECISION_HIGH) return PRECISION_HIGHP; else return PRECISION_MEDIUMP; } String ShaderLanguage::get_datatype_name(DataType p_type) { switch (p_type) { case TYPE_VOID: return "void"; case TYPE_BOOL: return "bool"; case TYPE_BVEC2: return "bvec2"; case TYPE_BVEC3: return "bvec3"; case TYPE_BVEC4: return "bvec4"; case TYPE_INT: return "int"; case TYPE_IVEC2: return "ivec2"; case TYPE_IVEC3: return "ivec3"; case TYPE_IVEC4: return "ivec4"; case TYPE_UINT: return "uint"; case TYPE_UVEC2: return "uvec2"; case TYPE_UVEC3: return "uvec3"; case TYPE_UVEC4: return "uvec4"; case TYPE_FLOAT: return "float"; case TYPE_VEC2: return "vec2"; case TYPE_VEC3: return "vec3"; case TYPE_VEC4: return "vec4"; case TYPE_MAT2: return "mat2"; case TYPE_MAT3: return "mat3"; case TYPE_MAT4: return "mat4"; case TYPE_SAMPLER2D: return "sampler2D"; case TYPE_ISAMPLER2D: return "isampler2D"; case TYPE_USAMPLER2D: return "usampler2D"; case TYPE_SAMPLER2DARRAY: return "sampler2DArray"; case TYPE_ISAMPLER2DARRAY: return "isampler2DArray"; case TYPE_USAMPLER2DARRAY: return "usampler2DArray"; case TYPE_SAMPLER3D: return "sampler3D"; case TYPE_ISAMPLER3D: return "isampler3D"; case TYPE_USAMPLER3D: return "usampler3D"; case TYPE_SAMPLERCUBE: return "samplerCube"; } return ""; } bool ShaderLanguage::is_token_nonvoid_datatype(TokenType p_type) { return is_token_datatype(p_type) && p_type != TK_TYPE_VOID; } void ShaderLanguage::clear() { current_function = StringName(); completion_type = COMPLETION_NONE; completion_block = NULL; completion_function = StringName(); error_line = 0; tk_line = 1; char_idx = 0; error_set = false; error_str = ""; while (nodes) { Node *n = nodes; nodes = nodes->next; memdelete(n); } } bool ShaderLanguage::_find_identifier(const BlockNode *p_block, const Map &p_builtin_types, const StringName &p_identifier, DataType *r_data_type, IdentifierType *r_type) { if (p_builtin_types.has(p_identifier)) { if (r_data_type) { *r_data_type = p_builtin_types[p_identifier].type; } if (r_type) { *r_type = IDENTIFIER_BUILTIN_VAR; } return true; } FunctionNode *function = NULL; while (p_block) { if (p_block->variables.has(p_identifier)) { if (r_data_type) { *r_data_type = p_block->variables[p_identifier].type; } if (r_type) { *r_type = IDENTIFIER_LOCAL_VAR; } return true; } if (p_block->parent_function) { function = p_block->parent_function; break; } else { ERR_FAIL_COND_V(!p_block->parent_block, false); p_block = p_block->parent_block; } } if (function) { for (int i = 0; i < function->arguments.size(); i++) { if (function->arguments[i].name == p_identifier) { if (r_data_type) { *r_data_type = function->arguments[i].type; } if (r_type) { *r_type = IDENTIFIER_FUNCTION_ARGUMENT; } return true; } } } if (shader->varyings.has(p_identifier)) { if (r_data_type) { *r_data_type = shader->varyings[p_identifier].type; } if (r_type) { *r_type = IDENTIFIER_VARYING; } return true; } if (shader->uniforms.has(p_identifier)) { if (r_data_type) { *r_data_type = shader->uniforms[p_identifier].type; } if (r_type) { *r_type = IDENTIFIER_UNIFORM; } return true; } for (int i = 0; i < shader->functions.size(); i++) { if (!shader->functions[i].callable) continue; if (shader->functions[i].name == p_identifier) { if (r_data_type) { *r_data_type = shader->functions[i].function->return_type; } if (r_type) { *r_type = IDENTIFIER_FUNCTION; } } } return false; } bool ShaderLanguage::_validate_operator(OperatorNode *p_op, DataType *r_ret_type) { bool valid = false; DataType ret_type; switch (p_op->op) { case OP_EQUAL: case OP_NOT_EQUAL: { DataType na = p_op->arguments[0]->get_datatype(); DataType nb = p_op->arguments[1]->get_datatype(); valid = na == nb; ret_type = TYPE_BOOL; } break; case OP_LESS: case OP_LESS_EQUAL: case OP_GREATER: case OP_GREATER_EQUAL: { DataType na = p_op->arguments[0]->get_datatype(); DataType nb = p_op->arguments[1]->get_datatype(); valid = na == nb && (na == TYPE_UINT || na == TYPE_INT || na == TYPE_FLOAT); ret_type = TYPE_BOOL; } break; case OP_AND: case OP_OR: { DataType na = p_op->arguments[0]->get_datatype(); DataType nb = p_op->arguments[1]->get_datatype(); valid = na == nb && na == TYPE_BOOL; ret_type = TYPE_BOOL; } break; case OP_NOT: { DataType na = p_op->arguments[0]->get_datatype(); valid = na == TYPE_BOOL; ret_type = TYPE_BOOL; } break; case OP_INCREMENT: case OP_DECREMENT: case OP_POST_INCREMENT: case OP_POST_DECREMENT: case OP_NEGATE: { DataType na = p_op->arguments[0]->get_datatype(); valid = na > TYPE_BOOL && na < TYPE_MAT2; ret_type = na; } break; case OP_ADD: case OP_SUB: case OP_MUL: case OP_DIV: { DataType na = p_op->arguments[0]->get_datatype(); DataType nb = p_op->arguments[1]->get_datatype(); if (na > nb) { //make things easier; SWAP(na, nb); } if (na == nb) { valid = (na > TYPE_BOOL && na <= TYPE_MAT4); ret_type = na; } else if (na == TYPE_INT && nb == TYPE_IVEC2) { valid = true; ret_type = TYPE_IVEC2; } else if (na == TYPE_INT && nb == TYPE_IVEC3) { valid = true; ret_type = TYPE_IVEC3; } else if (na == TYPE_INT && nb == TYPE_IVEC4) { valid = true; ret_type = TYPE_IVEC4; } else if (na == TYPE_UINT && nb == TYPE_UVEC2) { valid = true; ret_type = TYPE_UVEC2; } else if (na == TYPE_UINT && nb == TYPE_UVEC3) { valid = true; ret_type = TYPE_UVEC3; } else if (na == TYPE_UINT && nb == TYPE_UVEC4) { valid = true; ret_type = TYPE_UVEC4; } else if (na == TYPE_FLOAT && nb == TYPE_VEC2) { valid = true; ret_type = TYPE_VEC2; } else if (na == TYPE_FLOAT && nb == TYPE_VEC3) { valid = true; ret_type = TYPE_VEC3; } else if (na == TYPE_FLOAT && nb == TYPE_VEC4) { valid = true; ret_type = TYPE_VEC4; } else if (p_op->op == OP_MUL && na == TYPE_FLOAT && nb == TYPE_MAT2) { valid = true; ret_type = TYPE_MAT2; } else if (p_op->op == OP_MUL && na == TYPE_FLOAT && nb == TYPE_MAT3) { valid = true; ret_type = TYPE_MAT3; } else if (p_op->op == OP_MUL && na == TYPE_FLOAT && nb == TYPE_MAT4) { valid = true; ret_type = TYPE_MAT4; } else if (p_op->op == OP_MUL && na == TYPE_VEC2 && nb == TYPE_MAT2) { valid = true; ret_type = TYPE_VEC2; } else if (p_op->op == OP_MUL && na == TYPE_VEC3 && nb == TYPE_MAT3) { valid = true; ret_type = TYPE_VEC3; } else if (p_op->op == OP_MUL && na == TYPE_VEC4 && nb == TYPE_MAT4) { valid = true; ret_type = TYPE_VEC4; } } break; case OP_ASSIGN_MOD: case OP_MOD: { /* * The operator modulus (%) operates on signed or unsigned integers or integer vectors. The operand * types must both be signed or both be unsigned. The operands cannot be vectors of differing size. If * one operand is a scalar and the other vector, then the scalar is applied component-wise to the vector, * resulting in the same type as the vector. If both are vectors of the same size, the result is computed * component-wise. */ DataType na = p_op->arguments[0]->get_datatype(); DataType nb = p_op->arguments[1]->get_datatype(); if (na == TYPE_INT && nb == TYPE_INT) { valid = true; ret_type = TYPE_INT; } else if (na == TYPE_IVEC2 && nb == TYPE_INT) { valid = true; ret_type = TYPE_IVEC2; } else if (na == TYPE_IVEC3 && nb == TYPE_INT) { valid = true; ret_type = TYPE_IVEC3; } else if (na == TYPE_IVEC4 && nb == TYPE_INT) { valid = true; ret_type = TYPE_IVEC4; } else if (na == TYPE_IVEC2 && nb == TYPE_IVEC2) { valid = true; ret_type = TYPE_IVEC2; } else if (na == TYPE_IVEC3 && nb == TYPE_IVEC3) { valid = true; ret_type = TYPE_IVEC3; } else if (na == TYPE_IVEC4 && nb == TYPE_IVEC4) { valid = true; ret_type = TYPE_IVEC4; ///// } else if (na == TYPE_UINT && nb == TYPE_UINT) { valid = true; ret_type = TYPE_UINT; } else if (na == TYPE_UVEC2 && nb == TYPE_UINT) { valid = true; ret_type = TYPE_UVEC2; } else if (na == TYPE_UVEC3 && nb == TYPE_UINT) { valid = true; ret_type = TYPE_UVEC3; } else if (na == TYPE_UVEC4 && nb == TYPE_UINT) { valid = true; ret_type = TYPE_UVEC4; } else if (na == TYPE_UVEC2 && nb == TYPE_UVEC2) { valid = true; ret_type = TYPE_UVEC2; } else if (na == TYPE_UVEC3 && nb == TYPE_UVEC3) { valid = true; ret_type = TYPE_UVEC3; } else if (na == TYPE_UVEC4 && nb == TYPE_UVEC4) { valid = true; ret_type = TYPE_UVEC4; } } break; case OP_ASSIGN_SHIFT_LEFT: case OP_ASSIGN_SHIFT_RIGHT: case OP_SHIFT_LEFT: case OP_SHIFT_RIGHT: { DataType na = p_op->arguments[0]->get_datatype(); DataType nb = p_op->arguments[1]->get_datatype(); if (na == TYPE_INT && nb == TYPE_INT) { valid = true; ret_type = TYPE_INT; } else if (na == TYPE_IVEC2 && nb == TYPE_INT) { valid = true; ret_type = TYPE_IVEC2; } else if (na == TYPE_IVEC3 && nb == TYPE_INT) { valid = true; ret_type = TYPE_IVEC3; } else if (na == TYPE_IVEC4 && nb == TYPE_INT) { valid = true; ret_type = TYPE_IVEC4; } else if (na == TYPE_IVEC2 && nb == TYPE_IVEC2) { valid = true; ret_type = TYPE_IVEC2; } else if (na == TYPE_IVEC3 && nb == TYPE_IVEC3) { valid = true; ret_type = TYPE_IVEC3; } else if (na == TYPE_IVEC4 && nb == TYPE_IVEC4) { valid = true; ret_type = TYPE_IVEC4; } else if (na == TYPE_UINT && nb == TYPE_UINT) { valid = true; ret_type = TYPE_UINT; } else if (na == TYPE_UVEC2 && nb == TYPE_UINT) { valid = true; ret_type = TYPE_UVEC2; } else if (na == TYPE_UVEC3 && nb == TYPE_UINT) { valid = true; ret_type = TYPE_UVEC3; } else if (na == TYPE_UVEC4 && nb == TYPE_UINT) { valid = true; ret_type = TYPE_UVEC4; } else if (na == TYPE_UVEC2 && nb == TYPE_UVEC2) { valid = true; ret_type = TYPE_UVEC2; } else if (na == TYPE_UVEC3 && nb == TYPE_UVEC3) { valid = true; ret_type = TYPE_UVEC3; } else if (na == TYPE_UVEC4 && nb == TYPE_UVEC4) { valid = true; ret_type = TYPE_UVEC4; } } break; case OP_ASSIGN: { DataType na = p_op->arguments[0]->get_datatype(); DataType nb = p_op->arguments[1]->get_datatype(); valid = na == nb; ret_type = na; } break; case OP_ASSIGN_ADD: case OP_ASSIGN_SUB: case OP_ASSIGN_MUL: case OP_ASSIGN_DIV: { DataType na = p_op->arguments[0]->get_datatype(); DataType nb = p_op->arguments[1]->get_datatype(); if (na == nb) { valid = (na > TYPE_BOOL && na < TYPE_MAT2) || (p_op->op == OP_ASSIGN_MUL && na >= TYPE_MAT2 && na <= TYPE_MAT4); ret_type = na; } else if (na == TYPE_IVEC2 && nb == TYPE_INT) { valid = true; ret_type = TYPE_IVEC2; } else if (na == TYPE_IVEC3 && nb == TYPE_INT) { valid = true; ret_type = TYPE_IVEC3; } else if (na == TYPE_IVEC4 && nb == TYPE_INT) { valid = true; ret_type = TYPE_IVEC4; } else if (na == TYPE_UVEC2 && nb == TYPE_UINT) { valid = true; ret_type = TYPE_UVEC2; } else if (na == TYPE_UVEC3 && nb == TYPE_UINT) { valid = true; ret_type = TYPE_UVEC3; } else if (na == TYPE_UVEC4 && nb == TYPE_UINT) { valid = true; ret_type = TYPE_UVEC4; } else if (na == TYPE_VEC2 && nb == TYPE_FLOAT) { valid = true; ret_type = TYPE_VEC2; } else if (na == TYPE_VEC3 && nb == TYPE_FLOAT) { valid = true; ret_type = TYPE_VEC3; } else if (na == TYPE_VEC4 && nb == TYPE_FLOAT) { valid = true; ret_type = TYPE_VEC4; } else if (p_op->op == OP_ASSIGN_MUL && na == TYPE_MAT2 && nb == TYPE_VEC2) { valid = true; ret_type = TYPE_MAT2; } else if (p_op->op == OP_ASSIGN_MUL && na == TYPE_MAT3 && nb == TYPE_VEC3) { valid = true; ret_type = TYPE_MAT3; } else if (p_op->op == OP_ASSIGN_MUL && na == TYPE_MAT4 && nb == TYPE_VEC4) { valid = true; ret_type = TYPE_MAT4; } } break; case OP_ASSIGN_BIT_AND: case OP_ASSIGN_BIT_OR: case OP_ASSIGN_BIT_XOR: case OP_BIT_AND: case OP_BIT_OR: case OP_BIT_XOR: { /* * The bitwise operators and (&), exclusive-or (^), and inclusive-or (|). The operands must be of type * signed or unsigned integers or integer vectors. The operands cannot be vectors of differing size. If * one operand is a scalar and the other a vector, the scalar is applied component-wise to the vector, * resulting in the same type as the vector. The fundamental types of the operands (signed or unsigned) * must match. */ DataType na = p_op->arguments[0]->get_datatype(); DataType nb = p_op->arguments[1]->get_datatype(); if (na > nb && p_op->op >= OP_BIT_AND) { //can swap for non assign SWAP(na, nb); } if (na == TYPE_INT && nb == TYPE_INT) { valid = true; ret_type = TYPE_INT; } else if (na == TYPE_IVEC2 && nb == TYPE_INT) { valid = true; ret_type = TYPE_IVEC2; } else if (na == TYPE_IVEC3 && nb == TYPE_INT) { valid = true; ret_type = TYPE_IVEC3; } else if (na == TYPE_IVEC4 && nb == TYPE_INT) { valid = true; ret_type = TYPE_IVEC4; } else if (na == TYPE_IVEC2 && nb == TYPE_IVEC2) { valid = true; ret_type = TYPE_IVEC2; } else if (na == TYPE_IVEC3 && nb == TYPE_IVEC3) { valid = true; ret_type = TYPE_IVEC3; } else if (na == TYPE_IVEC4 && nb == TYPE_IVEC4) { valid = true; ret_type = TYPE_IVEC4; ///// } else if (na == TYPE_UINT && nb == TYPE_UINT) { valid = true; ret_type = TYPE_UINT; } else if (na == TYPE_UVEC2 && nb == TYPE_UINT) { valid = true; ret_type = TYPE_UVEC2; } else if (na == TYPE_UVEC3 && nb == TYPE_UINT) { valid = true; ret_type = TYPE_UVEC3; } else if (na == TYPE_UVEC4 && nb == TYPE_UINT) { valid = true; ret_type = TYPE_UVEC4; } else if (na == TYPE_UVEC2 && nb == TYPE_UVEC2) { valid = true; ret_type = TYPE_UVEC2; } else if (na == TYPE_UVEC3 && nb == TYPE_UVEC3) { valid = true; ret_type = TYPE_UVEC3; } else if (na == TYPE_UVEC4 && nb == TYPE_UVEC4) { valid = true; ret_type = TYPE_UVEC4; } } break; case OP_BIT_INVERT: { //unaries DataType na = p_op->arguments[0]->get_datatype(); valid = na >= TYPE_INT && na < TYPE_FLOAT; ret_type = na; } break; case OP_SELECT_IF: { DataType na = p_op->arguments[0]->get_datatype(); DataType nb = p_op->arguments[1]->get_datatype(); DataType nc = p_op->arguments[2]->get_datatype(); valid = na == TYPE_BOOL && (nb == nc); ret_type = nb; } break; default: { ERR_FAIL_V(false); } } if (r_ret_type) *r_ret_type = ret_type; return valid; } const ShaderLanguage::BuiltinFuncDef ShaderLanguage::builtin_func_defs[] = { //constructors { "bool", TYPE_BOOL, { TYPE_BOOL, TYPE_VOID } }, { "bvec2", TYPE_BVEC2, { TYPE_BOOL, TYPE_VOID } }, { "bvec2", TYPE_BVEC2, { TYPE_BOOL, TYPE_BOOL, TYPE_VOID } }, { "bvec3", TYPE_BVEC3, { TYPE_BOOL, TYPE_VOID } }, { "bvec3", TYPE_BVEC3, { TYPE_BOOL, TYPE_BOOL, TYPE_BOOL, TYPE_VOID } }, { "bvec3", TYPE_BVEC3, { TYPE_BVEC2, TYPE_BOOL, TYPE_VOID } }, { "bvec3", TYPE_BVEC3, { TYPE_BOOL, TYPE_BVEC2, TYPE_VOID } }, { "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_VOID } }, { "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_BOOL, TYPE_BOOL, TYPE_BOOL, TYPE_VOID } }, { "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_BVEC2, TYPE_BOOL, TYPE_VOID } }, { "bvec4", TYPE_BVEC4, { TYPE_BVEC2, TYPE_BOOL, TYPE_BOOL, TYPE_VOID } }, { "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_BOOL, TYPE_BVEC2, TYPE_VOID } }, { "bvec4", TYPE_BVEC4, { TYPE_BOOL, TYPE_BVEC3, TYPE_VOID } }, { "bvec4", TYPE_BVEC4, { TYPE_BVEC3, TYPE_BOOL, TYPE_VOID } }, { "bvec4", TYPE_BVEC4, { TYPE_BVEC2, TYPE_BVEC2, TYPE_VOID } }, { "float", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "vec2", TYPE_VEC2, { TYPE_FLOAT, TYPE_VOID } }, { "vec2", TYPE_VEC2, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } }, { "vec3", TYPE_VEC3, { TYPE_FLOAT, TYPE_VOID } }, { "vec3", TYPE_VEC3, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } }, { "vec3", TYPE_VEC3, { TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } }, { "vec3", TYPE_VEC3, { TYPE_FLOAT, TYPE_VEC2, TYPE_VOID } }, { "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_VOID } }, { "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } }, { "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } }, { "vec4", TYPE_VEC4, { TYPE_VEC2, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } }, { "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VEC2, TYPE_VOID } }, { "vec4", TYPE_VEC4, { TYPE_FLOAT, TYPE_VEC3, TYPE_VOID } }, { "vec4", TYPE_VEC4, { TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "vec4", TYPE_VEC4, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "int", TYPE_INT, { TYPE_INT, TYPE_VOID } }, { "ivec2", TYPE_IVEC2, { TYPE_INT, TYPE_VOID } }, { "ivec2", TYPE_IVEC2, { TYPE_INT, TYPE_INT, TYPE_VOID } }, { "ivec3", TYPE_IVEC3, { TYPE_INT, TYPE_VOID } }, { "ivec3", TYPE_IVEC3, { TYPE_INT, TYPE_INT, TYPE_INT, TYPE_VOID } }, { "ivec3", TYPE_IVEC3, { TYPE_IVEC2, TYPE_INT, TYPE_VOID } }, { "ivec3", TYPE_IVEC3, { TYPE_INT, TYPE_IVEC2, TYPE_VOID } }, { "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_VOID } }, { "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_INT, TYPE_INT, TYPE_INT, TYPE_VOID } }, { "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_IVEC2, TYPE_INT, TYPE_VOID } }, { "ivec4", TYPE_IVEC4, { TYPE_IVEC2, TYPE_INT, TYPE_INT, TYPE_VOID } }, { "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_INT, TYPE_IVEC2, TYPE_VOID } }, { "ivec4", TYPE_IVEC4, { TYPE_INT, TYPE_IVEC3, TYPE_VOID } }, { "ivec4", TYPE_IVEC4, { TYPE_IVEC3, TYPE_INT, TYPE_VOID } }, { "ivec4", TYPE_IVEC4, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } }, { "uint", TYPE_UINT, { TYPE_UINT, TYPE_VOID } }, { "uvec2", TYPE_UVEC2, { TYPE_UINT, TYPE_VOID } }, { "uvec2", TYPE_UVEC2, { TYPE_UINT, TYPE_UINT, TYPE_VOID } }, { "uvec3", TYPE_UVEC3, { TYPE_UINT, TYPE_VOID } }, { "uvec3", TYPE_UVEC3, { TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_VOID } }, { "uvec3", TYPE_UVEC3, { TYPE_UVEC2, TYPE_UINT, TYPE_VOID } }, { "uvec3", TYPE_UVEC3, { TYPE_UINT, TYPE_UVEC2, TYPE_VOID } }, { "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_VOID } }, { "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_VOID } }, { "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_UVEC2, TYPE_UINT, TYPE_VOID } }, { "uvec4", TYPE_UVEC4, { TYPE_UVEC2, TYPE_UINT, TYPE_UINT, TYPE_VOID } }, { "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_UINT, TYPE_UVEC2, TYPE_VOID } }, { "uvec4", TYPE_UVEC4, { TYPE_UINT, TYPE_UVEC3, TYPE_VOID } }, { "uvec4", TYPE_UVEC4, { TYPE_UVEC3, TYPE_UINT, TYPE_VOID } }, { "uvec4", TYPE_UVEC4, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } }, { "mat2", TYPE_MAT2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "mat3", TYPE_MAT3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "mat4", TYPE_MAT4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "mat2", TYPE_MAT2, { TYPE_FLOAT, TYPE_VOID } }, { "mat3", TYPE_MAT3, { TYPE_FLOAT, TYPE_VOID } }, { "mat4", TYPE_MAT4, { TYPE_FLOAT, TYPE_VOID } }, //conversion scalars { "int", TYPE_INT, { TYPE_BOOL, TYPE_VOID } }, { "int", TYPE_INT, { TYPE_INT, TYPE_VOID } }, { "int", TYPE_INT, { TYPE_UINT, TYPE_VOID } }, { "int", TYPE_INT, { TYPE_FLOAT, TYPE_VOID } }, { "float", TYPE_FLOAT, { TYPE_BOOL, TYPE_VOID } }, { "float", TYPE_FLOAT, { TYPE_INT, TYPE_VOID } }, { "float", TYPE_FLOAT, { TYPE_UINT, TYPE_VOID } }, { "float", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "uint", TYPE_UINT, { TYPE_BOOL, TYPE_VOID } }, { "uint", TYPE_UINT, { TYPE_INT, TYPE_VOID } }, { "uint", TYPE_UINT, { TYPE_UINT, TYPE_VOID } }, { "uint", TYPE_UINT, { TYPE_FLOAT, TYPE_VOID } }, { "bool", TYPE_BOOL, { TYPE_BOOL, TYPE_VOID } }, { "bool", TYPE_BOOL, { TYPE_INT, TYPE_VOID } }, { "bool", TYPE_BOOL, { TYPE_UINT, TYPE_VOID } }, { "bool", TYPE_BOOL, { TYPE_FLOAT, TYPE_VOID } }, //conversion vectors { "ivec2", TYPE_IVEC2, { TYPE_BVEC2, TYPE_VOID } }, { "ivec2", TYPE_IVEC2, { TYPE_IVEC2, TYPE_VOID } }, { "ivec2", TYPE_IVEC2, { TYPE_UVEC2, TYPE_VOID } }, { "ivec2", TYPE_IVEC2, { TYPE_VEC2, TYPE_VOID } }, { "vec2", TYPE_VEC2, { TYPE_BVEC2, TYPE_VOID } }, { "vec2", TYPE_VEC2, { TYPE_IVEC2, TYPE_VOID } }, { "vec2", TYPE_VEC2, { TYPE_UVEC2, TYPE_VOID } }, { "vec2", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "uvec2", TYPE_UVEC2, { TYPE_BVEC2, TYPE_VOID } }, { "uvec2", TYPE_UVEC2, { TYPE_IVEC2, TYPE_VOID } }, { "uvec2", TYPE_UVEC2, { TYPE_UVEC2, TYPE_VOID } }, { "uvec2", TYPE_UVEC2, { TYPE_VEC2, TYPE_VOID } }, { "bvec2", TYPE_BVEC2, { TYPE_BVEC2, TYPE_VOID } }, { "bvec2", TYPE_BVEC2, { TYPE_IVEC2, TYPE_VOID } }, { "bvec2", TYPE_BVEC2, { TYPE_UVEC2, TYPE_VOID } }, { "bvec2", TYPE_BVEC2, { TYPE_VEC2, TYPE_VOID } }, { "ivec3", TYPE_IVEC3, { TYPE_BVEC3, TYPE_VOID } }, { "ivec3", TYPE_IVEC3, { TYPE_IVEC3, TYPE_VOID } }, { "ivec3", TYPE_IVEC3, { TYPE_UVEC3, TYPE_VOID } }, { "ivec3", TYPE_IVEC3, { TYPE_VEC3, TYPE_VOID } }, { "vec3", TYPE_VEC3, { TYPE_BVEC3, TYPE_VOID } }, { "vec3", TYPE_VEC3, { TYPE_IVEC3, TYPE_VOID } }, { "vec3", TYPE_VEC3, { TYPE_UVEC3, TYPE_VOID } }, { "vec3", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "uvec3", TYPE_UVEC3, { TYPE_BVEC3, TYPE_VOID } }, { "uvec3", TYPE_UVEC3, { TYPE_IVEC3, TYPE_VOID } }, { "uvec3", TYPE_UVEC3, { TYPE_UVEC3, TYPE_VOID } }, { "uvec3", TYPE_UVEC3, { TYPE_VEC3, TYPE_VOID } }, { "bvec3", TYPE_BVEC3, { TYPE_BVEC3, TYPE_VOID } }, { "bvec3", TYPE_BVEC3, { TYPE_IVEC3, TYPE_VOID } }, { "bvec3", TYPE_BVEC3, { TYPE_UVEC3, TYPE_VOID } }, { "bvec3", TYPE_BVEC3, { TYPE_VEC3, TYPE_VOID } }, { "ivec4", TYPE_IVEC4, { TYPE_BVEC4, TYPE_VOID } }, { "ivec4", TYPE_IVEC4, { TYPE_IVEC4, TYPE_VOID } }, { "ivec4", TYPE_IVEC4, { TYPE_UVEC4, TYPE_VOID } }, { "ivec4", TYPE_IVEC4, { TYPE_VEC4, TYPE_VOID } }, { "vec4", TYPE_VEC4, { TYPE_BVEC4, TYPE_VOID } }, { "vec4", TYPE_VEC4, { TYPE_IVEC4, TYPE_VOID } }, { "vec4", TYPE_VEC4, { TYPE_UVEC4, TYPE_VOID } }, { "vec4", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "uvec4", TYPE_UVEC4, { TYPE_BVEC4, TYPE_VOID } }, { "uvec4", TYPE_UVEC4, { TYPE_IVEC4, TYPE_VOID } }, { "uvec4", TYPE_UVEC4, { TYPE_UVEC4, TYPE_VOID } }, { "uvec4", TYPE_UVEC4, { TYPE_VEC4, TYPE_VOID } }, { "bvec4", TYPE_BVEC4, { TYPE_BVEC4, TYPE_VOID } }, { "bvec4", TYPE_BVEC4, { TYPE_IVEC4, TYPE_VOID } }, { "bvec4", TYPE_BVEC4, { TYPE_UVEC4, TYPE_VOID } }, { "bvec4", TYPE_BVEC4, { TYPE_VEC4, TYPE_VOID } }, //conversion between matrixes { "mat2", TYPE_MAT2, { TYPE_MAT3, TYPE_VOID } }, { "mat2", TYPE_MAT2, { TYPE_MAT4, TYPE_VOID } }, { "mat3", TYPE_MAT3, { TYPE_MAT2, TYPE_VOID } }, { "mat3", TYPE_MAT3, { TYPE_MAT4, TYPE_VOID } }, { "mat4", TYPE_MAT4, { TYPE_MAT2, TYPE_VOID } }, { "mat4", TYPE_MAT4, { TYPE_MAT3, TYPE_VOID } }, //builtins - trigonometry { "radians", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "radians", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "radians", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "radians", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "degrees", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "degrees", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "degrees", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "degrees", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "sin", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "sin", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "sin", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "sin", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "cos", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "cos", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "cos", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "cos", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "tan", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "tan", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "tan", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "tan", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "asin", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "asin", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "asin", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "asin", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "acos", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "acos", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "acos", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "acos", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "atan", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "atan", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "atan", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "atan", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "atan", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } }, { "atan", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "atan", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "atan", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "sinh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "sinh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "sinh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "sinh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "cosh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "cosh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "cosh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "cosh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "tanh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "tanh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "tanh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "tanh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "asinh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "asinh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "asinh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "asinh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "acosh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "acosh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "acosh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "acosh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "atanh", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "atanh", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "atanh", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "atanh", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, //builtins - exponential { "pow", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } }, { "pow", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "pow", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "pow", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "exp", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "exp", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "exp", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "exp", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "log", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "log", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "log", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "log", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "exp2", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "exp2", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "exp2", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "exp2", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "log2", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "log2", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "log2", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "log2", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "sqrt", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "sqrt", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "sqrt", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "sqrt", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "inversesqrt", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "inversesqrt", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "inversesqrt", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "inversesqrt", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, //builtins - common { "abs", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "abs", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "abs", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "abs", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "abs", TYPE_INT, { TYPE_INT, TYPE_VOID } }, { "abs", TYPE_IVEC2, { TYPE_IVEC2, TYPE_VOID } }, { "abs", TYPE_IVEC3, { TYPE_IVEC3, TYPE_VOID } }, { "abs", TYPE_IVEC4, { TYPE_IVEC4, TYPE_VOID } }, { "sign", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "sign", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "sign", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "sign", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "sign", TYPE_INT, { TYPE_INT, TYPE_VOID } }, { "sign", TYPE_IVEC2, { TYPE_IVEC2, TYPE_VOID } }, { "sign", TYPE_IVEC3, { TYPE_IVEC3, TYPE_VOID } }, { "sign", TYPE_IVEC4, { TYPE_IVEC4, TYPE_VOID } }, { "floor", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "floor", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "floor", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "floor", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "trunc", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "trunc", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "trunc", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "trunc", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "round", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "round", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "round", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "round", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "roundEven", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "roundEven", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "roundEven", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "roundEven", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "ceil", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "ceil", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "ceil", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "ceil", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "fract", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "fract", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "fract", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "fract", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "mod", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } }, { "mod", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "mod", TYPE_VEC2, { TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } }, { "mod", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "mod", TYPE_VEC3, { TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "mod", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "mod", TYPE_VEC4, { TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } }, { "modf", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } }, { "modf", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "modf", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "modf", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "min", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } }, { "min", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "min", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "min", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "min", TYPE_INT, { TYPE_INT, TYPE_INT, TYPE_VOID } }, { "min", TYPE_IVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } }, { "min", TYPE_IVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } }, { "min", TYPE_IVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } }, { "min", TYPE_UINT, { TYPE_UINT, TYPE_UINT, TYPE_VOID } }, { "min", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } }, { "min", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } }, { "min", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } }, { "max", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } }, { "max", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "max", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "max", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "max", TYPE_INT, { TYPE_INT, TYPE_INT, TYPE_VOID } }, { "max", TYPE_IVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } }, { "max", TYPE_IVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } }, { "max", TYPE_IVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } }, { "max", TYPE_UINT, { TYPE_UINT, TYPE_UINT, TYPE_VOID } }, { "max", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } }, { "max", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } }, { "max", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } }, { "clamp", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } }, { "clamp", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "clamp", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "clamp", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "clamp", TYPE_VEC2, { TYPE_VEC2, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } }, { "clamp", TYPE_VEC3, { TYPE_VEC3, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } }, { "clamp", TYPE_VEC4, { TYPE_VEC4, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } }, { "clamp", TYPE_INT, { TYPE_INT, TYPE_INT, TYPE_INT, TYPE_VOID } }, { "clamp", TYPE_IVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } }, { "clamp", TYPE_IVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } }, { "clamp", TYPE_IVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } }, { "clamp", TYPE_IVEC2, { TYPE_IVEC2, TYPE_INT, TYPE_INT, TYPE_VOID } }, { "clamp", TYPE_IVEC3, { TYPE_IVEC3, TYPE_INT, TYPE_INT, TYPE_VOID } }, { "clamp", TYPE_IVEC4, { TYPE_IVEC4, TYPE_INT, TYPE_INT, TYPE_VOID } }, { "clamp", TYPE_UINT, { TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_VOID } }, { "clamp", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } }, { "clamp", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } }, { "clamp", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } }, { "clamp", TYPE_UVEC2, { TYPE_UVEC2, TYPE_UINT, TYPE_UINT, TYPE_VOID } }, { "clamp", TYPE_UVEC3, { TYPE_UVEC3, TYPE_UINT, TYPE_UINT, TYPE_VOID } }, { "clamp", TYPE_UVEC4, { TYPE_UVEC4, TYPE_UINT, TYPE_UINT, TYPE_VOID } }, { "mix", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } }, { "mix", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_BOOL, TYPE_VOID } }, { "mix", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } }, { "mix", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_BOOL, TYPE_VOID } }, { "mix", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_BVEC2, TYPE_VOID } }, { "mix", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "mix", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "mix", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_BOOL, TYPE_VOID } }, { "mix", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_BVEC3, TYPE_VOID } }, { "mix", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "mix", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } }, { "mix", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_BOOL, TYPE_VOID } }, { "mix", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_BVEC4, TYPE_VOID } }, { "mix", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "step", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } }, { "step", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "step", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "step", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "step", TYPE_VEC2, { TYPE_FLOAT, TYPE_VEC2, TYPE_VOID } }, { "step", TYPE_VEC3, { TYPE_FLOAT, TYPE_VEC3, TYPE_VOID } }, { "step", TYPE_VEC4, { TYPE_FLOAT, TYPE_VEC4, TYPE_VOID } }, { "smoothstep", TYPE_FLOAT, { TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_VOID } }, { "smoothstep", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "smoothstep", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "smoothstep", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "smoothstep", TYPE_VEC2, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VEC2, TYPE_VOID } }, { "smoothstep", TYPE_VEC3, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VEC3, TYPE_VOID } }, { "smoothstep", TYPE_VEC4, { TYPE_FLOAT, TYPE_FLOAT, TYPE_VEC4, TYPE_VOID } }, { "isnan", TYPE_BOOL, { TYPE_FLOAT, TYPE_VOID } }, { "isnan", TYPE_BVEC2, { TYPE_VEC2, TYPE_VOID } }, { "isnan", TYPE_BVEC3, { TYPE_VEC3, TYPE_VOID } }, { "isnan", TYPE_BVEC4, { TYPE_VEC4, TYPE_VOID } }, { "isinf", TYPE_BOOL, { TYPE_FLOAT, TYPE_VOID } }, { "isinf", TYPE_BVEC2, { TYPE_VEC2, TYPE_VOID } }, { "isinf", TYPE_BVEC3, { TYPE_VEC3, TYPE_VOID } }, { "isinf", TYPE_BVEC4, { TYPE_VEC4, TYPE_VOID } }, { "floatBitsToInt", TYPE_INT, { TYPE_FLOAT, TYPE_VOID } }, { "floatBitsToInt", TYPE_IVEC2, { TYPE_VEC2, TYPE_VOID } }, { "floatBitsToInt", TYPE_IVEC3, { TYPE_VEC3, TYPE_VOID } }, { "floatBitsToInt", TYPE_IVEC4, { TYPE_VEC4, TYPE_VOID } }, { "floatBitsToUint", TYPE_UINT, { TYPE_FLOAT, TYPE_VOID } }, { "floatBitsToUint", TYPE_UVEC2, { TYPE_VEC2, TYPE_VOID } }, { "floatBitsToUint", TYPE_UVEC3, { TYPE_VEC3, TYPE_VOID } }, { "floatBitsToUint", TYPE_UVEC4, { TYPE_VEC4, TYPE_VOID } }, { "intBitsToFloat", TYPE_FLOAT, { TYPE_INT, TYPE_VOID } }, { "intBitsToFloat", TYPE_VEC2, { TYPE_IVEC2, TYPE_VOID } }, { "intBitsToFloat", TYPE_VEC3, { TYPE_IVEC3, TYPE_VOID } }, { "intBitsToFloat", TYPE_VEC4, { TYPE_IVEC4, TYPE_VOID } }, { "uintBitsToFloat", TYPE_FLOAT, { TYPE_UINT, TYPE_VOID } }, { "uintBitsToFloat", TYPE_VEC2, { TYPE_UVEC2, TYPE_VOID } }, { "uintBitsToFloat", TYPE_VEC3, { TYPE_UVEC3, TYPE_VOID } }, { "uintBitsToFloat", TYPE_VEC4, { TYPE_UVEC4, TYPE_VOID } }, //builtins - geometric { "length", TYPE_FLOAT, { TYPE_VEC2, TYPE_VOID } }, { "length", TYPE_FLOAT, { TYPE_VEC3, TYPE_VOID } }, { "length", TYPE_FLOAT, { TYPE_VEC4, TYPE_VOID } }, { "distance", TYPE_FLOAT, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "distance", TYPE_FLOAT, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "distance", TYPE_FLOAT, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "dot", TYPE_FLOAT, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "dot", TYPE_FLOAT, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "dot", TYPE_FLOAT, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "cross", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "normalize", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "normalize", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "normalize", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "reflect", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "refract", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "faceforward", TYPE_VEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "faceforward", TYPE_VEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "faceforward", TYPE_VEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "matrixCompMult", TYPE_MAT2, { TYPE_MAT2, TYPE_MAT2, TYPE_VOID } }, { "matrixCompMult", TYPE_MAT3, { TYPE_MAT3, TYPE_MAT3, TYPE_VOID } }, { "matrixCompMult", TYPE_MAT4, { TYPE_MAT4, TYPE_MAT4, TYPE_VOID } }, { "outerProduct", TYPE_MAT2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "outerProduct", TYPE_MAT3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "outerProduct", TYPE_MAT4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "transpose", TYPE_MAT2, { TYPE_MAT2, TYPE_VOID } }, { "transpose", TYPE_MAT3, { TYPE_MAT3, TYPE_VOID } }, { "transpose", TYPE_MAT4, { TYPE_MAT4, TYPE_VOID } }, { "determinant", TYPE_FLOAT, { TYPE_MAT2, TYPE_VOID } }, { "determinant", TYPE_FLOAT, { TYPE_MAT3, TYPE_VOID } }, { "determinant", TYPE_FLOAT, { TYPE_MAT4, TYPE_VOID } }, { "inverse", TYPE_MAT2, { TYPE_MAT2, TYPE_VOID } }, { "inverse", TYPE_MAT3, { TYPE_MAT3, TYPE_VOID } }, { "inverse", TYPE_MAT4, { TYPE_MAT4, TYPE_VOID } }, { "lessThan", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "lessThan", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "lessThan", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "lessThan", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } }, { "lessThan", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } }, { "lessThan", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } }, { "lessThan", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } }, { "lessThan", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } }, { "lessThan", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } }, { "greaterThan", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "greaterThan", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "greaterThan", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "greaterThan", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } }, { "greaterThan", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } }, { "greaterThan", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } }, { "greaterThan", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } }, { "greaterThan", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } }, { "greaterThan", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } }, { "lessThanEqual", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "lessThanEqual", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "lessThanEqual", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "lessThanEqual", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } }, { "lessThanEqual", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } }, { "lessThanEqual", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } }, { "lessThanEqual", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } }, { "lessThanEqual", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } }, { "lessThanEqual", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } }, { "greaterThanEqual", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "greaterThanEqual", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "greaterThanEqual", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "greaterThanEqual", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } }, { "greaterThanEqual", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } }, { "greaterThanEqual", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } }, { "greaterThanEqual", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } }, { "greaterThanEqual", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } }, { "greaterThanEqual", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } }, { "equal", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "equal", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "equal", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "equal", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } }, { "equal", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } }, { "equal", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } }, { "equal", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } }, { "equal", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } }, { "equal", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } }, { "equal", TYPE_BVEC2, { TYPE_BVEC2, TYPE_BVEC2, TYPE_VOID } }, { "equal", TYPE_BVEC3, { TYPE_BVEC3, TYPE_BVEC3, TYPE_VOID } }, { "equal", TYPE_BVEC4, { TYPE_BVEC4, TYPE_BVEC4, TYPE_VOID } }, { "notEqual", TYPE_BVEC2, { TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "notEqual", TYPE_BVEC3, { TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "notEqual", TYPE_BVEC4, { TYPE_VEC4, TYPE_VEC4, TYPE_VOID } }, { "notEqual", TYPE_BVEC2, { TYPE_IVEC2, TYPE_IVEC2, TYPE_VOID } }, { "notEqual", TYPE_BVEC3, { TYPE_IVEC3, TYPE_IVEC3, TYPE_VOID } }, { "notEqual", TYPE_BVEC4, { TYPE_IVEC4, TYPE_IVEC4, TYPE_VOID } }, { "notEqual", TYPE_BVEC2, { TYPE_UVEC2, TYPE_UVEC2, TYPE_VOID } }, { "notEqual", TYPE_BVEC3, { TYPE_UVEC3, TYPE_UVEC3, TYPE_VOID } }, { "notEqual", TYPE_BVEC4, { TYPE_UVEC4, TYPE_UVEC4, TYPE_VOID } }, { "notEqual", TYPE_BVEC2, { TYPE_BVEC2, TYPE_BVEC2, TYPE_VOID } }, { "notEqual", TYPE_BVEC3, { TYPE_BVEC3, TYPE_BVEC3, TYPE_VOID } }, { "notEqual", TYPE_BVEC4, { TYPE_BVEC4, TYPE_BVEC4, TYPE_VOID } }, { "any", TYPE_BOOL, { TYPE_BVEC2, TYPE_VOID } }, { "any", TYPE_BOOL, { TYPE_BVEC3, TYPE_VOID } }, { "any", TYPE_BOOL, { TYPE_BVEC4, TYPE_VOID } }, { "all", TYPE_BOOL, { TYPE_BVEC2, TYPE_VOID } }, { "all", TYPE_BOOL, { TYPE_BVEC3, TYPE_VOID } }, { "all", TYPE_BOOL, { TYPE_BVEC4, TYPE_VOID } }, { "not", TYPE_BOOL, { TYPE_BVEC2, TYPE_VOID } }, { "not", TYPE_BOOL, { TYPE_BVEC3, TYPE_VOID } }, { "not", TYPE_BOOL, { TYPE_BVEC4, TYPE_VOID } }, //builtins - texture { "textureSize", TYPE_IVEC2, { TYPE_SAMPLER2D, TYPE_INT, TYPE_VOID } }, { "textureSize", TYPE_IVEC2, { TYPE_ISAMPLER2D, TYPE_INT, TYPE_VOID } }, { "textureSize", TYPE_IVEC2, { TYPE_USAMPLER2D, TYPE_INT, TYPE_VOID } }, { "textureSize", TYPE_IVEC3, { TYPE_SAMPLER2DARRAY, TYPE_INT, TYPE_VOID } }, { "textureSize", TYPE_IVEC3, { TYPE_ISAMPLER2DARRAY, TYPE_INT, TYPE_VOID } }, { "textureSize", TYPE_IVEC3, { TYPE_USAMPLER2DARRAY, TYPE_INT, TYPE_VOID } }, { "textureSize", TYPE_IVEC3, { TYPE_SAMPLER3D, TYPE_INT, TYPE_VOID } }, { "textureSize", TYPE_IVEC3, { TYPE_ISAMPLER3D, TYPE_INT, TYPE_VOID } }, { "textureSize", TYPE_IVEC3, { TYPE_USAMPLER3D, TYPE_INT, TYPE_VOID } }, { "textureSize", TYPE_IVEC2, { TYPE_SAMPLERCUBE, TYPE_INT, TYPE_VOID } }, { "texture", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC2, TYPE_VOID } }, { "texture", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } }, { "texture", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC2, TYPE_VOID } }, { "texture", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } }, { "texture", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC2, TYPE_VOID } }, { "texture", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } }, { "texture", TYPE_VEC4, { TYPE_SAMPLER2DARRAY, TYPE_VEC3, TYPE_VOID } }, { "texture", TYPE_VEC4, { TYPE_SAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "texture", TYPE_UVEC4, { TYPE_USAMPLER2DARRAY, TYPE_VEC3, TYPE_VOID } }, { "texture", TYPE_UVEC4, { TYPE_USAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "texture", TYPE_IVEC4, { TYPE_ISAMPLER2DARRAY, TYPE_VEC3, TYPE_VOID } }, { "texture", TYPE_IVEC4, { TYPE_ISAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "texture", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC3, TYPE_VOID } }, { "texture", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "texture", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC3, TYPE_VOID } }, { "texture", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "texture", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC3, TYPE_VOID } }, { "texture", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "texture", TYPE_VEC4, { TYPE_SAMPLERCUBE, TYPE_VEC3, TYPE_VOID } }, { "texture", TYPE_VEC4, { TYPE_SAMPLERCUBE, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "textureProj", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC3, TYPE_VOID } }, { "textureProj", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC4, TYPE_VOID } }, { "textureProj", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "textureProj", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } }, { "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC3, TYPE_VOID } }, { "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC4, TYPE_VOID } }, { "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } }, { "textureProj", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC3, TYPE_VOID } }, { "textureProj", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC4, TYPE_VOID } }, { "textureProj", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "textureProj", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } }, { "textureProj", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC4, TYPE_VOID } }, { "textureProj", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } }, { "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC4, TYPE_VOID } }, { "textureProj", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } }, { "textureProj", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC4, TYPE_VOID } }, { "textureProj", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } }, { "textureLod", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } }, { "textureLod", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } }, { "textureLod", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC2, TYPE_FLOAT, TYPE_VOID } }, { "textureLod", TYPE_VEC4, { TYPE_SAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "textureLod", TYPE_IVEC4, { TYPE_ISAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "textureLod", TYPE_UVEC4, { TYPE_USAMPLER2DARRAY, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "textureLod", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "textureLod", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "textureLod", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "textureLod", TYPE_VEC4, { TYPE_SAMPLERCUBE, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "texelFetch", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_IVEC2, TYPE_INT, TYPE_VOID } }, { "texelFetch", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_IVEC2, TYPE_INT, TYPE_VOID } }, { "texelFetch", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_IVEC2, TYPE_INT, TYPE_VOID } }, { "texelFetch", TYPE_VEC4, { TYPE_SAMPLER2DARRAY, TYPE_IVEC3, TYPE_INT, TYPE_VOID } }, { "texelFetch", TYPE_IVEC4, { TYPE_ISAMPLER2DARRAY, TYPE_IVEC3, TYPE_INT, TYPE_VOID } }, { "texelFetch", TYPE_UVEC4, { TYPE_USAMPLER2DARRAY, TYPE_IVEC3, TYPE_INT, TYPE_VOID } }, { "texelFetch", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_IVEC3, TYPE_INT, TYPE_VOID } }, { "texelFetch", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_IVEC3, TYPE_INT, TYPE_VOID } }, { "texelFetch", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_IVEC3, TYPE_INT, TYPE_VOID } }, { "textureProjLod", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "textureProjLod", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } }, { "textureProjLod", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "textureProjLod", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } }, { "textureProjLod", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC3, TYPE_FLOAT, TYPE_VOID } }, { "textureProjLod", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC4, TYPE_FLOAT, TYPE_VOID } }, { "textureGrad", TYPE_VEC4, { TYPE_SAMPLER2D, TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "textureGrad", TYPE_IVEC4, { TYPE_ISAMPLER2D, TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "textureGrad", TYPE_UVEC4, { TYPE_USAMPLER2D, TYPE_VEC2, TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "textureGrad", TYPE_VEC4, { TYPE_SAMPLER2DARRAY, TYPE_VEC3, TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "textureGrad", TYPE_IVEC4, { TYPE_ISAMPLER2DARRAY, TYPE_VEC3, TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "textureGrad", TYPE_UVEC4, { TYPE_USAMPLER2DARRAY, TYPE_VEC3, TYPE_VEC2, TYPE_VEC2, TYPE_VOID } }, { "textureGrad", TYPE_VEC4, { TYPE_SAMPLER3D, TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "textureGrad", TYPE_IVEC4, { TYPE_ISAMPLER3D, TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "textureGrad", TYPE_UVEC4, { TYPE_USAMPLER3D, TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "textureGrad", TYPE_VEC4, { TYPE_SAMPLERCUBE, TYPE_VEC3, TYPE_VEC3, TYPE_VEC3, TYPE_VOID } }, { "dFdx", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "dFdx", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "dFdx", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "dFdx", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "dFdy", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "dFdy", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "dFdy", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "dFdy", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { "fwidth", TYPE_FLOAT, { TYPE_FLOAT, TYPE_VOID } }, { "fwidth", TYPE_VEC2, { TYPE_VEC2, TYPE_VOID } }, { "fwidth", TYPE_VEC3, { TYPE_VEC3, TYPE_VOID } }, { "fwidth", TYPE_VEC4, { TYPE_VEC4, TYPE_VOID } }, { NULL, TYPE_VOID, { TYPE_VOID } } }; bool ShaderLanguage::_validate_function_call(BlockNode *p_block, OperatorNode *p_func, DataType *r_ret_type) { ERR_FAIL_COND_V(p_func->op != OP_CALL && p_func->op != OP_CONSTRUCT, NULL); Vector args; ERR_FAIL_COND_V(p_func->arguments[0]->type != Node::TYPE_VARIABLE, NULL); StringName name = static_cast(p_func->arguments[0])->name.operator String(); bool all_const = true; for (int i = 1; i < p_func->arguments.size(); i++) { if (p_func->arguments[i]->type != Node::TYPE_CONSTANT) all_const = false; args.push_back(p_func->arguments[i]->get_datatype()); } int argcount = args.size(); bool failed_builtin = false; if (argcount <= 4) { // test builtins int idx = 0; while (builtin_func_defs[idx].name) { if (name == builtin_func_defs[idx].name) { failed_builtin = true; bool fail = false; for (int i = 0; i < argcount; i++) { if (get_scalar_type(args[i]) == args[i] && p_func->arguments[i + 1]->type == Node::TYPE_CONSTANT && convert_constant(static_cast(p_func->arguments[i + 1]), builtin_func_defs[idx].args[i])) { //all good } else if (args[i] != builtin_func_defs[idx].args[i]) { fail = true; break; } } if (!fail && argcount < 4 && builtin_func_defs[idx].args[argcount] != TYPE_VOID) fail = true; //make sure the number of arguments matches if (!fail) { if (r_ret_type) *r_ret_type = builtin_func_defs[idx].rettype; return true; } } idx++; } } if (failed_builtin) { String err = "Invalid arguments for built-in function: " + String(name) + "("; for (int i = 0; i < argcount; i++) { if (i > 0) err += ","; if (p_func->arguments[i + 1]->type == Node::TYPE_CONSTANT && p_func->arguments[i + 1]->get_datatype() == TYPE_INT && static_cast(p_func->arguments[i + 1])->values[0].sint < 0) { err += "-"; } err += get_datatype_name(args[i]); } err += ")"; _set_error(err); return false; } // try existing functions.. StringName exclude_function; BlockNode *block = p_block; while (block) { if (block->parent_function) { exclude_function = block->parent_function->name; } block = block->parent_block; } if (name == exclude_function) { _set_error("Recursion is not allowed"); return false; } for (int i = 0; i < shader->functions.size(); i++) { if (name != shader->functions[i].name) continue; if (!shader->functions[i].callable) { _set_error("Function '" + String(name) + " can't be called from source code."); return false; } FunctionNode *pfunc = shader->functions[i].function; if (pfunc->arguments.size() != args.size()) continue; bool fail = false; for (int i = 0; i < args.size(); i++) { if (get_scalar_type(args[i]) == args[i] && p_func->arguments[i + 1]->type == Node::TYPE_CONSTANT && convert_constant(static_cast(p_func->arguments[i + 1]), pfunc->arguments[i].type)) { //all good } else if (args[i] != pfunc->arguments[i].type) { fail = true; break; } } if (!fail) { if (r_ret_type) *r_ret_type = pfunc->return_type; return true; } } return false; } bool ShaderLanguage::_parse_function_arguments(BlockNode *p_block, const Map &p_builtin_types, OperatorNode *p_func, int *r_complete_arg) { TkPos pos = _get_tkpos(); Token tk = _get_token(); if (tk.type == TK_PARENTHESIS_CLOSE) { return true; } _set_tkpos(pos); while (true) { if (r_complete_arg) { pos = _get_tkpos(); tk = _get_token(); if (tk.type == TK_CURSOR) { *r_complete_arg = p_func->arguments.size() - 1; } else { _set_tkpos(pos); } } Node *arg = _parse_and_reduce_expression(p_block, p_builtin_types); if (!arg) { return false; } p_func->arguments.push_back(arg); tk = _get_token(); if (tk.type == TK_PARENTHESIS_CLOSE) { return true; } else if (tk.type != TK_COMMA) { // something is broken _set_error("Expected ',' or ')' after argument"); return false; } } return true; } bool ShaderLanguage::is_token_operator(TokenType p_type) { return (p_type == TK_OP_EQUAL || p_type == TK_OP_NOT_EQUAL || p_type == TK_OP_LESS || p_type == TK_OP_LESS_EQUAL || p_type == TK_OP_GREATER || p_type == TK_OP_GREATER_EQUAL || p_type == TK_OP_AND || p_type == TK_OP_OR || p_type == TK_OP_NOT || p_type == TK_OP_ADD || p_type == TK_OP_SUB || p_type == TK_OP_MUL || p_type == TK_OP_DIV || p_type == TK_OP_MOD || p_type == TK_OP_SHIFT_LEFT || p_type == TK_OP_SHIFT_RIGHT || p_type == TK_OP_ASSIGN || p_type == TK_OP_ASSIGN_ADD || p_type == TK_OP_ASSIGN_SUB || p_type == TK_OP_ASSIGN_MUL || p_type == TK_OP_ASSIGN_DIV || p_type == TK_OP_ASSIGN_MOD || p_type == TK_OP_ASSIGN_SHIFT_LEFT || p_type == TK_OP_ASSIGN_SHIFT_RIGHT || p_type == TK_OP_ASSIGN_BIT_AND || p_type == TK_OP_ASSIGN_BIT_OR || p_type == TK_OP_ASSIGN_BIT_XOR || p_type == TK_OP_BIT_AND || p_type == TK_OP_BIT_OR || p_type == TK_OP_BIT_XOR || p_type == TK_OP_BIT_INVERT || p_type == TK_OP_INCREMENT || p_type == TK_OP_DECREMENT || p_type == TK_QUESTION || p_type == TK_COLON); } bool ShaderLanguage::convert_constant(ConstantNode *p_constant, DataType p_to_type, ConstantNode::Value *p_value) { if (p_constant->datatype == p_to_type) { if (p_value) { for (int i = 0; i < p_constant->values.size(); i++) { p_value[i] = p_constant->values[i]; } } return true; } else if (p_constant->datatype == TYPE_INT && p_to_type == TYPE_FLOAT) { if (p_value) { p_value->real = p_constant->values[0].sint; } return true; } else if (p_constant->datatype == TYPE_UINT && p_to_type == TYPE_FLOAT) { if (p_value) { p_value->real = p_constant->values[0].uint; } return true; } else if (p_constant->datatype == TYPE_INT && p_to_type == TYPE_UINT) { if (p_constant->values[0].sint < 0) { return false; } if (p_value) { p_value->uint = p_constant->values[0].sint; } return true; } else if (p_constant->datatype == TYPE_UINT && p_to_type == TYPE_INT) { if (p_constant->values[0].uint > 0x7FFFFFFF) { return false; } if (p_value) { p_value->sint = p_constant->values[0].uint; } return true; } else return false; } bool ShaderLanguage::is_scalar_type(DataType p_type) { return p_type == TYPE_BOOL || p_type == TYPE_INT || p_type == TYPE_UINT || p_type == TYPE_FLOAT; } bool ShaderLanguage::is_sampler_type(DataType p_type) { return p_type == TYPE_SAMPLER2D || p_type == TYPE_ISAMPLER2D || p_type == TYPE_USAMPLER2D || p_type == TYPE_SAMPLER2DARRAY || p_type == TYPE_ISAMPLER2DARRAY || p_type == TYPE_USAMPLER2DARRAY || p_type == TYPE_SAMPLER3D || p_type == TYPE_ISAMPLER3D || p_type == TYPE_USAMPLER3D || p_type == TYPE_SAMPLERCUBE; } void ShaderLanguage::get_keyword_list(List *r_keywords) { Set kws; int idx = 0; while (keyword_list[idx].text) { kws.insert(keyword_list[idx].text); idx++; } idx = 0; while (builtin_func_defs[idx].name) { kws.insert(builtin_func_defs[idx].name); idx++; } for (Set::Element *E = kws.front(); E; E = E->next()) { r_keywords->push_back(E->get()); } } void ShaderLanguage::get_builtin_funcs(List *r_keywords) { Set kws; int idx = 0; while (builtin_func_defs[idx].name) { kws.insert(builtin_func_defs[idx].name); idx++; } for (Set::Element *E = kws.front(); E; E = E->next()) { r_keywords->push_back(E->get()); } } ShaderLanguage::DataType ShaderLanguage::get_scalar_type(DataType p_type) { static const DataType scalar_types[] = { TYPE_VOID, TYPE_BOOL, TYPE_BOOL, TYPE_BOOL, TYPE_BOOL, TYPE_INT, TYPE_INT, TYPE_INT, TYPE_INT, TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_UINT, TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_FLOAT, TYPE_INT, TYPE_UINT, TYPE_FLOAT, }; return scalar_types[p_type]; } int ShaderLanguage::get_cardinality(DataType p_type) { static const int cardinality_table[] = { 0, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 2, 3, 4, 1, 1, 1, 1, }; return cardinality_table[p_type]; } bool ShaderLanguage::_get_completable_identifier(BlockNode *p_block, CompletionType p_type, StringName &identifier) { identifier = StringName(); TkPos pos; Token tk = _get_token(); if (tk.type == TK_IDENTIFIER) { identifier = tk.text; pos = _get_tkpos(); tk = _get_token(); } if (tk.type == TK_CURSOR) { completion_type = p_type; completion_line = tk_line; completion_block = p_block; pos = _get_tkpos(); tk = _get_token(); if (tk.type == TK_IDENTIFIER) { identifier = identifier.operator String() + tk.text.operator String(); } else { _set_tkpos(pos); } return true; } else if (identifier != StringName()) { _set_tkpos(pos); } return false; } bool ShaderLanguage::_is_operator_assign(Operator p_op) const { switch (p_op) { case OP_ASSIGN: case OP_ASSIGN_ADD: case OP_ASSIGN_SUB: case OP_ASSIGN_MUL: case OP_ASSIGN_DIV: case OP_ASSIGN_MOD: case OP_ASSIGN_SHIFT_LEFT: case OP_ASSIGN_SHIFT_RIGHT: case OP_ASSIGN_BIT_AND: case OP_ASSIGN_BIT_OR: case OP_ASSIGN_BIT_XOR: return true; default: return false; } return false; } bool ShaderLanguage::_validate_assign(Node *p_node, const Map &p_builtin_types, String *r_message) { if (p_node->type == Node::TYPE_OPERATOR) { OperatorNode *op = static_cast(p_node); if (op->op == OP_INDEX) { return _validate_assign(op->arguments[0], p_builtin_types, r_message); } else if (_is_operator_assign(op->op)) { //chained assignment return _validate_assign(op->arguments[1], p_builtin_types, r_message); } else if (op->op == OP_CALL) { if (r_message) *r_message = RTR("Assignment to function."); return false; } } else if (p_node->type == Node::TYPE_MEMBER) { MemberNode *member = static_cast(p_node); return _validate_assign(member->owner, p_builtin_types, r_message); } else if (p_node->type == Node::TYPE_VARIABLE) { VariableNode *var = static_cast(p_node); if (shader->uniforms.has(var->name)) { if (r_message) *r_message = RTR("Assignment to uniform."); return false; } if (shader->varyings.has(var->name) && current_function != String("vertex")) { if (r_message) *r_message = RTR("Varyings can only be assigned in vertex function."); return false; } if (!(p_builtin_types.has(var->name) && p_builtin_types[var->name].constant)) { return true; } } if (r_message) *r_message = "Assignment to constant expression."; return false; } ShaderLanguage::Node *ShaderLanguage::_parse_expression(BlockNode *p_block, const Map &p_builtin_types) { Vector expression; //Vector operators; while (true) { Node *expr = NULL; TkPos prepos = _get_tkpos(); Token tk = _get_token(); TkPos pos = _get_tkpos(); if (tk.type == TK_PARENTHESIS_OPEN) { //handle subexpression expr = _parse_and_reduce_expression(p_block, p_builtin_types); if (!expr) return NULL; tk = _get_token(); if (tk.type != TK_PARENTHESIS_CLOSE) { _set_error("Expected ')' in expression"); return NULL; } } else if (tk.type == TK_REAL_CONSTANT) { ConstantNode *constant = alloc_node(); ConstantNode::Value v; v.real = tk.constant; constant->values.push_back(v); constant->datatype = TYPE_FLOAT; expr = constant; } else if (tk.type == TK_INT_CONSTANT) { ConstantNode *constant = alloc_node(); ConstantNode::Value v; v.sint = tk.constant; constant->values.push_back(v); constant->datatype = TYPE_INT; expr = constant; } else if (tk.type == TK_TRUE) { //print_line("found true"); //handle true constant ConstantNode *constant = alloc_node(); ConstantNode::Value v; v.boolean = true; constant->values.push_back(v); constant->datatype = TYPE_BOOL; expr = constant; } else if (tk.type == TK_FALSE) { //handle false constant ConstantNode *constant = alloc_node(); ConstantNode::Value v; v.boolean = false; constant->values.push_back(v); constant->datatype = TYPE_BOOL; expr = constant; } else if (tk.type == TK_TYPE_VOID) { //make sure void is not used in expression _set_error("Void value not allowed in Expression"); return NULL; } else if (is_token_nonvoid_datatype(tk.type)) { //basic type constructor OperatorNode *func = alloc_node(); func->op = OP_CONSTRUCT; if (is_token_precision(tk.type)) { func->return_precision_cache = get_token_precision(tk.type); tk = _get_token(); } VariableNode *funcname = alloc_node(); funcname->name = get_datatype_name(get_token_datatype(tk.type)); func->arguments.push_back(funcname); tk = _get_token(); if (tk.type != TK_PARENTHESIS_OPEN) { _set_error("Expected '(' after type name"); return NULL; } int carg = -1; bool ok = _parse_function_arguments(p_block, p_builtin_types, func, &carg); if (carg >= 0) { completion_type = COMPLETION_CALL_ARGUMENTS; completion_line = tk_line; completion_block = p_block; completion_function = funcname->name; completion_argument = carg; } if (!ok) return NULL; if (!_validate_function_call(p_block, func, &func->return_cache)) { _set_error("No matching constructor found for: '" + String(funcname->name) + "'"); return NULL; } //validate_Function_call() expr = _reduce_expression(p_block, func); } else if (tk.type == TK_IDENTIFIER) { _set_tkpos(prepos); StringName identifier; _get_completable_identifier(p_block, COMPLETION_IDENTIFIER, identifier); tk = _get_token(); if (tk.type == TK_PARENTHESIS_OPEN) { //a function StringName name = identifier; OperatorNode *func = alloc_node(); func->op = OP_CALL; VariableNode *funcname = alloc_node(); funcname->name = name; func->arguments.push_back(funcname); int carg = -1; bool ok = _parse_function_arguments(p_block, p_builtin_types, func, &carg); //test if function was parsed first for (int i = 0; i < shader->functions.size(); i++) { if (shader->functions[i].name == name) { //add to current function as dependency for (int j = 0; j < shader->functions.size(); j++) { if (shader->functions[j].name == current_function) { shader->functions.write[j].uses_function.insert(name); break; } } break; } } if (carg >= 0) { completion_type = COMPLETION_CALL_ARGUMENTS; completion_line = tk_line; completion_block = p_block; completion_function = funcname->name; completion_argument = carg; } if (!ok) return NULL; if (!_validate_function_call(p_block, func, &func->return_cache)) { _set_error("No matching function found for: '" + String(funcname->name) + "'"); return NULL; } expr = func; } else { //an identifier _set_tkpos(pos); DataType data_type; IdentifierType ident_type; if (!_find_identifier(p_block, p_builtin_types, identifier, &data_type, &ident_type)) { _set_error("Unknown identifier in expression: " + String(identifier)); return NULL; } if (ident_type == IDENTIFIER_FUNCTION) { _set_error("Can't use function as identifier: " + String(identifier)); return NULL; } VariableNode *varname = alloc_node(); varname->name = identifier; varname->datatype_cache = data_type; expr = varname; } } else if (tk.type == TK_OP_ADD) { continue; //this one does nothing } else if (tk.type == TK_OP_SUB || tk.type == TK_OP_NOT || tk.type == TK_OP_BIT_INVERT || tk.type == TK_OP_INCREMENT || tk.type == TK_OP_DECREMENT) { Expression e; e.is_op = true; switch (tk.type) { case TK_OP_SUB: e.op = OP_NEGATE; break; case TK_OP_NOT: e.op = OP_NOT; break; case TK_OP_BIT_INVERT: e.op = OP_BIT_INVERT; break; case TK_OP_INCREMENT: e.op = OP_INCREMENT; break; case TK_OP_DECREMENT: e.op = OP_DECREMENT; break; default: ERR_FAIL_V(NULL); } expression.push_back(e); continue; } else { _set_error("Expected expression, found: " + get_token_text(tk)); return NULL; //nothing } ERR_FAIL_COND_V(!expr, NULL); /* OK now see what's NEXT to the operator.. */ /* OK now see what's NEXT to the operator.. */ /* OK now see what's NEXT to the operator.. */ while (true) { TkPos pos = _get_tkpos(); tk = _get_token(); if (tk.type == TK_CURSOR) { //do nothing } else if (tk.type == TK_PERIOD) { StringName identifier; if (_get_completable_identifier(p_block, COMPLETION_INDEX, identifier)) { completion_base = expr->get_datatype(); } if (identifier == StringName()) { _set_error("Expected identifier as member"); return NULL; } DataType dt = expr->get_datatype(); String ident = identifier; bool ok = true; DataType member_type; switch (dt) { case TYPE_BVEC2: case TYPE_IVEC2: case TYPE_UVEC2: case TYPE_VEC2: { int l = ident.length(); if (l == 1) { member_type = DataType(dt - 1); } else if (l == 2) { member_type = dt; } else { ok = false; break; } const CharType *c = ident.ptr(); for (int i = 0; i < l; i++) { switch (c[i]) { case 'r': case 'g': case 'x': case 'y': break; default: ok = false; break; } } } break; case TYPE_BVEC3: case TYPE_IVEC3: case TYPE_UVEC3: case TYPE_VEC3: { int l = ident.length(); if (l == 1) { member_type = DataType(dt - 2); } else if (l == 2) { member_type = DataType(dt - 1); } else if (l == 3) { member_type = dt; } else { ok = false; break; } const CharType *c = ident.ptr(); for (int i = 0; i < l; i++) { switch (c[i]) { case 'r': case 'g': case 'b': case 'x': case 'y': case 'z': break; default: ok = false; break; } } } break; case TYPE_BVEC4: case TYPE_IVEC4: case TYPE_UVEC4: case TYPE_VEC4: { int l = ident.length(); if (l == 1) { member_type = DataType(dt - 3); } else if (l == 2) { member_type = DataType(dt - 2); } else if (l == 3) { member_type = DataType(dt - 1); } else if (l == 4) { member_type = dt; } else { ok = false; break; } const CharType *c = ident.ptr(); for (int i = 0; i < l; i++) { switch (c[i]) { case 'r': case 'g': case 'b': case 'a': case 'x': case 'y': case 'z': case 'w': break; default: ok = false; break; } } } break; default: { ok = false; } } if (!ok) { _set_error("Invalid member for " + get_datatype_name(dt) + " expression: ." + ident); return NULL; } MemberNode *mn = alloc_node(); mn->basetype = dt; mn->datatype = member_type; mn->name = ident; mn->owner = expr; expr = mn; //todo //member (period) has priority over any operator //creates a subindexing expression in place /*} else if (tk.type==TK_BRACKET_OPEN) { //todo //subindexing has priority over any operator //creates a subindexing expression in place */ } else if (tk.type == TK_BRACKET_OPEN) { Node *index = _parse_and_reduce_expression(p_block, p_builtin_types); if (!index) return NULL; if (index->get_datatype() != TYPE_INT && index->get_datatype() != TYPE_UINT) { _set_error("Only integer datatypes are allowed for indexing"); return NULL; } DataType member_type = TYPE_VOID; switch (expr->get_datatype()) { case TYPE_BVEC2: case TYPE_VEC2: case TYPE_IVEC2: case TYPE_UVEC2: case TYPE_MAT2: if (index->type == Node::TYPE_CONSTANT) { uint32_t index_constant = static_cast(index)->values[0].uint; if (index_constant >= 2) { _set_error("Index out of range (0-1)"); return NULL; } } else { _set_error("Only integer constants are allowed as index at the moment"); return NULL; } switch (expr->get_datatype()) { case TYPE_BVEC2: member_type = TYPE_BOOL; break; case TYPE_VEC2: member_type = TYPE_FLOAT; break; case TYPE_IVEC2: member_type = TYPE_INT; break; case TYPE_UVEC2: member_type = TYPE_UINT; break; case TYPE_MAT2: member_type = TYPE_VEC2; break; } break; case TYPE_BVEC3: case TYPE_VEC3: case TYPE_IVEC3: case TYPE_UVEC3: case TYPE_MAT3: if (index->type == Node::TYPE_CONSTANT) { uint32_t index_constant = static_cast(index)->values[0].uint; if (index_constant >= 3) { _set_error("Index out of range (0-2)"); return NULL; } } else { _set_error("Only integer constants are allowed as index at the moment"); return NULL; } switch (expr->get_datatype()) { case TYPE_BVEC3: member_type = TYPE_BOOL; break; case TYPE_VEC3: member_type = TYPE_FLOAT; break; case TYPE_IVEC3: member_type = TYPE_INT; break; case TYPE_UVEC3: member_type = TYPE_UINT; break; case TYPE_MAT3: member_type = TYPE_VEC3; break; } break; case TYPE_BVEC4: case TYPE_VEC4: case TYPE_IVEC4: case TYPE_UVEC4: case TYPE_MAT4: if (index->type == Node::TYPE_CONSTANT) { uint32_t index_constant = static_cast(index)->values[0].uint; if (index_constant >= 4) { _set_error("Index out of range (0-3)"); return NULL; } } else { _set_error("Only integer constants are allowed as index at the moment"); return NULL; } switch (expr->get_datatype()) { case TYPE_BVEC4: member_type = TYPE_BOOL; break; case TYPE_VEC4: member_type = TYPE_FLOAT; break; case TYPE_IVEC4: member_type = TYPE_INT; break; case TYPE_UVEC4: member_type = TYPE_UINT; break; case TYPE_MAT4: member_type = TYPE_VEC4; break; } break; default: { _set_error("Object of type '" + get_datatype_name(expr->get_datatype()) + "' can't be indexed"); return NULL; } } OperatorNode *op = alloc_node(); op->op = OP_INDEX; op->return_cache = member_type; op->arguments.push_back(expr); op->arguments.push_back(index); expr = op; tk = _get_token(); if (tk.type != TK_BRACKET_CLOSE) { _set_error("Expected ']' after indexing expression"); return NULL; } } else if (tk.type == TK_OP_INCREMENT || tk.type == TK_OP_DECREMENT) { OperatorNode *op = alloc_node(); op->op = tk.type == TK_OP_DECREMENT ? OP_POST_DECREMENT : OP_POST_INCREMENT; op->arguments.push_back(expr); if (!_validate_operator(op, &op->return_cache)) { _set_error("Invalid base type for increment/decrement operator"); return NULL; } if (!_validate_assign(expr, p_builtin_types)) { _set_error("Invalid use of increment/decrement operator in constant expression."); return NULL; } expr = op; } else { _set_tkpos(pos); break; } } Expression e; e.is_op = false; e.node = expr; expression.push_back(e); pos = _get_tkpos(); tk = _get_token(); if (is_token_operator(tk.type)) { Expression o; o.is_op = true; switch (tk.type) { case TK_OP_EQUAL: o.op = OP_EQUAL; break; case TK_OP_NOT_EQUAL: o.op = OP_NOT_EQUAL; break; case TK_OP_LESS: o.op = OP_LESS; break; case TK_OP_LESS_EQUAL: o.op = OP_LESS_EQUAL; break; case TK_OP_GREATER: o.op = OP_GREATER; break; case TK_OP_GREATER_EQUAL: o.op = OP_GREATER_EQUAL; break; case TK_OP_AND: o.op = OP_AND; break; case TK_OP_OR: o.op = OP_OR; break; case TK_OP_ADD: o.op = OP_ADD; break; case TK_OP_SUB: o.op = OP_SUB; break; case TK_OP_MUL: o.op = OP_MUL; break; case TK_OP_DIV: o.op = OP_DIV; break; case TK_OP_MOD: o.op = OP_MOD; break; case TK_OP_SHIFT_LEFT: o.op = OP_SHIFT_LEFT; break; case TK_OP_SHIFT_RIGHT: o.op = OP_SHIFT_RIGHT; break; case TK_OP_ASSIGN: o.op = OP_ASSIGN; break; case TK_OP_ASSIGN_ADD: o.op = OP_ASSIGN_ADD; break; case TK_OP_ASSIGN_SUB: o.op = OP_ASSIGN_SUB; break; case TK_OP_ASSIGN_MUL: o.op = OP_ASSIGN_MUL; break; case TK_OP_ASSIGN_DIV: o.op = OP_ASSIGN_DIV; break; case TK_OP_ASSIGN_MOD: o.op = OP_ASSIGN_MOD; break; case TK_OP_ASSIGN_SHIFT_LEFT: o.op = OP_ASSIGN_SHIFT_LEFT; break; case TK_OP_ASSIGN_SHIFT_RIGHT: o.op = OP_ASSIGN_SHIFT_RIGHT; break; case TK_OP_ASSIGN_BIT_AND: o.op = OP_ASSIGN_BIT_AND; break; case TK_OP_ASSIGN_BIT_OR: o.op = OP_ASSIGN_BIT_OR; break; case TK_OP_ASSIGN_BIT_XOR: o.op = OP_ASSIGN_BIT_XOR; break; case TK_OP_BIT_AND: o.op = OP_BIT_AND; break; case TK_OP_BIT_OR: o.op = OP_BIT_OR; break; case TK_OP_BIT_XOR: o.op = OP_BIT_XOR; break; case TK_QUESTION: o.op = OP_SELECT_IF; break; case TK_COLON: o.op = OP_SELECT_ELSE; break; default: { _set_error("Invalid token for operator: " + get_token_text(tk)); return NULL; } } expression.push_back(o); } else { _set_tkpos(pos); //something else, so rollback and end break; } } /* Reduce the set set of expressions and place them in an operator tree, respecting precedence */ while (expression.size() > 1) { int next_op = -1; int min_priority = 0xFFFFF; bool is_unary = false; bool is_ternary = false; for (int i = 0; i < expression.size(); i++) { if (!expression[i].is_op) { continue; } bool unary = false; bool ternary = false; int priority; switch (expression[i].op) { case OP_EQUAL: priority = 8; break; case OP_NOT_EQUAL: priority = 8; break; case OP_LESS: priority = 7; break; case OP_LESS_EQUAL: priority = 7; break; case OP_GREATER: priority = 7; break; case OP_GREATER_EQUAL: priority = 7; break; case OP_AND: priority = 12; break; case OP_OR: priority = 14; break; case OP_NOT: priority = 3; unary = true; break; case OP_NEGATE: priority = 3; unary = true; break; case OP_ADD: priority = 5; break; case OP_SUB: priority = 5; break; case OP_MUL: priority = 4; break; case OP_DIV: priority = 4; break; case OP_MOD: priority = 4; break; case OP_SHIFT_LEFT: priority = 6; break; case OP_SHIFT_RIGHT: priority = 6; break; case OP_ASSIGN: priority = 16; break; case OP_ASSIGN_ADD: priority = 16; break; case OP_ASSIGN_SUB: priority = 16; break; case OP_ASSIGN_MUL: priority = 16; break; case OP_ASSIGN_DIV: priority = 16; break; case OP_ASSIGN_MOD: priority = 16; break; case OP_ASSIGN_SHIFT_LEFT: priority = 16; break; case OP_ASSIGN_SHIFT_RIGHT: priority = 16; break; case OP_ASSIGN_BIT_AND: priority = 16; break; case OP_ASSIGN_BIT_OR: priority = 16; break; case OP_ASSIGN_BIT_XOR: priority = 16; break; case OP_BIT_AND: priority = 9; break; case OP_BIT_OR: priority = 11; break; case OP_BIT_XOR: priority = 10; break; case OP_BIT_INVERT: priority = 3; unary = true; break; case OP_INCREMENT: priority = 3; unary = true; break; case OP_DECREMENT: priority = 3; unary = true; break; case OP_SELECT_IF: priority = 15; ternary = true; break; case OP_SELECT_ELSE: priority = 15; ternary = true; break; default: ERR_FAIL_V(NULL); //unexpected operator } if (priority < min_priority) { // < is used for left to right (default) // <= is used for right to left next_op = i; min_priority = priority; is_unary = unary; is_ternary = ternary; } } ERR_FAIL_COND_V(next_op == -1, NULL); // OK! create operator.. // OK! create operator.. if (is_unary) { int expr_pos = next_op; while (expression[expr_pos].is_op) { expr_pos++; if (expr_pos == expression.size()) { //can happen.. _set_error("Unexpected end of expression..."); return NULL; } } //consecutively do unary opeators for (int i = expr_pos - 1; i >= next_op; i--) { OperatorNode *op = alloc_node(); op->op = expression[i].op; if ((op->op == OP_INCREMENT || op->op == OP_DECREMENT) && !_validate_assign(expression[i + 1].node, p_builtin_types)) { _set_error("Can't use increment/decrement operator in constant expression."); return NULL; } op->arguments.push_back(expression[i + 1].node); expression.write[i].is_op = false; expression.write[i].node = op; if (!_validate_operator(op, &op->return_cache)) { String at; for (int i = 0; i < op->arguments.size(); i++) { if (i > 0) at += " and "; at += get_datatype_name(op->arguments[i]->get_datatype()); } _set_error("Invalid arguments to unary operator '" + get_operator_text(op->op) + "' :" + at); return NULL; } expression.remove(i + 1); } } else if (is_ternary) { if (next_op < 1 || next_op >= (expression.size() - 1)) { _set_error("Parser bug..."); ERR_FAIL_V(NULL); } if (next_op + 2 >= expression.size() || !expression[next_op + 2].is_op || expression[next_op + 2].op != OP_SELECT_ELSE) { _set_error("Missing matching ':' for select operator"); return NULL; } OperatorNode *op = alloc_node(); op->op = expression[next_op].op; op->arguments.push_back(expression[next_op - 1].node); op->arguments.push_back(expression[next_op + 1].node); op->arguments.push_back(expression[next_op + 3].node); expression.write[next_op - 1].is_op = false; expression.write[next_op - 1].node = op; if (!_validate_operator(op, &op->return_cache)) { String at; for (int i = 0; i < op->arguments.size(); i++) { if (i > 0) at += " and "; at += get_datatype_name(op->arguments[i]->get_datatype()); } _set_error("Invalid argument to ternary ?: operator: " + at); return NULL; } for (int i = 0; i < 4; i++) { expression.remove(next_op); } } else { if (next_op < 1 || next_op >= (expression.size() - 1)) { _set_error("Parser bug..."); ERR_FAIL_V(NULL); } OperatorNode *op = alloc_node(); op->op = expression[next_op].op; if (expression[next_op - 1].is_op) { _set_error("Parser bug..."); ERR_FAIL_V(NULL); } if (_is_operator_assign(op->op)) { String assign_message; if (!_validate_assign(expression[next_op - 1].node, p_builtin_types, &assign_message)) { _set_error(assign_message); return NULL; } } if (expression[next_op + 1].is_op) { // this is not invalid and can really appear // but it becomes invalid anyway because no binary op // can be followed by a unary op in a valid combination, // due to how precedence works, unaries will always disappear first _set_error("Parser bug..."); } op->arguments.push_back(expression[next_op - 1].node); //expression goes as left op->arguments.push_back(expression[next_op + 1].node); //next expression goes as right expression.write[next_op - 1].node = op; //replace all 3 nodes by this operator and make it an expression if (!_validate_operator(op, &op->return_cache)) { String at; for (int i = 0; i < op->arguments.size(); i++) { if (i > 0) at += " and "; at += get_datatype_name(op->arguments[i]->get_datatype()); } _set_error("Invalid arguments to operator '" + get_operator_text(op->op) + "' :" + at); return NULL; } expression.remove(next_op); expression.remove(next_op); } } return expression[0].node; } ShaderLanguage::Node *ShaderLanguage::_reduce_expression(BlockNode *p_block, ShaderLanguage::Node *p_node) { if (p_node->type != Node::TYPE_OPERATOR) return p_node; //for now only reduce simple constructors OperatorNode *op = static_cast(p_node); if (op->op == OP_CONSTRUCT) { ERR_FAIL_COND_V(op->arguments[0]->type != Node::TYPE_VARIABLE, p_node); DataType base = get_scalar_type(op->get_datatype()); Vector values; for (int i = 1; i < op->arguments.size(); i++) { op->arguments.write[i] = _reduce_expression(p_block, op->arguments[i]); if (op->arguments[i]->type == Node::TYPE_CONSTANT) { ConstantNode *cn = static_cast(op->arguments[i]); if (get_scalar_type(cn->datatype) == base) { int cardinality = get_cardinality(op->arguments[i]->get_datatype()); if (cn->values.size() == cardinality) { for (int j = 0; j < cn->values.size(); j++) { values.push_back(cn->values[j]); } } else if (cn->values.size() == 1) { for (int j = 0; j < cardinality; j++) { values.push_back(cn->values[0]); } } // else: should be filtered by the parser as it's an invalid constructor } else if (get_scalar_type(cn->datatype) == cn->datatype) { ConstantNode::Value v; if (!convert_constant(cn, base, &v)) { return p_node; } values.push_back(v); } else { return p_node; } } else { return p_node; } } ConstantNode *cn = alloc_node(); cn->datatype = op->get_datatype(); cn->values = values; return cn; } else if (op->op == OP_NEGATE) { op->arguments.write[0] = _reduce_expression(p_block, op->arguments[0]); if (op->arguments[0]->type == Node::TYPE_CONSTANT) { ConstantNode *cn = static_cast(op->arguments[0]); DataType base = get_scalar_type(cn->datatype); Vector values; for (int i = 0; i < cn->values.size(); i++) { ConstantNode::Value nv; switch (base) { case TYPE_BOOL: { nv.boolean = !cn->values[i].boolean; } break; case TYPE_INT: { nv.sint = -cn->values[i].sint; } break; case TYPE_UINT: { nv.uint = -cn->values[i].uint; } break; case TYPE_FLOAT: { nv.real = -cn->values[i].real; } break; default: {} } values.push_back(nv); } cn->values = values; return cn; } } return p_node; } ShaderLanguage::Node *ShaderLanguage::_parse_and_reduce_expression(BlockNode *p_block, const Map &p_builtin_types) { ShaderLanguage::Node *expr = _parse_expression(p_block, p_builtin_types); if (!expr) //errored return NULL; expr = _reduce_expression(p_block, expr); return expr; } Error ShaderLanguage::_parse_block(BlockNode *p_block, const Map &p_builtin_types, bool p_just_one, bool p_can_break, bool p_can_continue) { while (true) { TkPos pos = _get_tkpos(); Token tk = _get_token(); if (tk.type == TK_CURLY_BRACKET_CLOSE) { //end of block if (p_just_one) { _set_error("Unexpected '}'"); return ERR_PARSE_ERROR; } return OK; } else if (is_token_precision(tk.type) || is_token_nonvoid_datatype(tk.type)) { DataPrecision precision = PRECISION_DEFAULT; if (is_token_precision(tk.type)) { precision = get_token_precision(tk.type); tk = _get_token(); if (!is_token_nonvoid_datatype(tk.type)) { _set_error("Expected datatype after precision"); return ERR_PARSE_ERROR; } } DataType type = get_token_datatype(tk.type); tk = _get_token(); VariableDeclarationNode *vardecl = alloc_node(); vardecl->datatype = type; vardecl->precision = precision; p_block->statements.push_back(vardecl); while (true) { if (tk.type != TK_IDENTIFIER) { _set_error("Expected identifier after type"); return ERR_PARSE_ERROR; } StringName name = tk.text; if (_find_identifier(p_block, p_builtin_types, name)) { _set_error("Redefinition of '" + String(name) + "'"); return ERR_PARSE_ERROR; } BlockNode::Variable var; var.type = type; var.precision = precision; var.line = tk_line; VariableDeclarationNode::Declaration decl; decl.name = name; decl.initializer = NULL; tk = _get_token(); if (tk.type == TK_OP_ASSIGN) { //variable created with assignment! must parse an expression Node *n = _parse_and_reduce_expression(p_block, p_builtin_types); if (!n) return ERR_PARSE_ERROR; decl.initializer = n; if (var.type != n->get_datatype()) { _set_error("Invalid assignment of '" + get_datatype_name(n->get_datatype()) + "' to '" + get_datatype_name(var.type) + "'"); return ERR_PARSE_ERROR; } tk = _get_token(); } p_block->variables[name] = var; vardecl->declarations.push_back(decl); if (tk.type == TK_COMMA) { tk = _get_token(); //another variable } else if (tk.type == TK_SEMICOLON) { break; } else { _set_error("Expected ',' or ';' after variable"); return ERR_PARSE_ERROR; } } } else if (tk.type == TK_CURLY_BRACKET_OPEN) { //a sub block, just because.. BlockNode *block = alloc_node(); block->parent_block = p_block; _parse_block(block, p_builtin_types, false, p_can_break, p_can_continue); p_block->statements.push_back(block); } else if (tk.type == TK_CF_IF) { //if () {} tk = _get_token(); if (tk.type != TK_PARENTHESIS_OPEN) { _set_error("Expected '(' after if"); return ERR_PARSE_ERROR; } ControlFlowNode *cf = alloc_node(); cf->flow_op = FLOW_OP_IF; Node *n = _parse_and_reduce_expression(p_block, p_builtin_types); if (!n) return ERR_PARSE_ERROR; tk = _get_token(); if (tk.type != TK_PARENTHESIS_CLOSE) { _set_error("Expected ')' after expression"); return ERR_PARSE_ERROR; } BlockNode *block = alloc_node(); block->parent_block = p_block; cf->expressions.push_back(n); cf->blocks.push_back(block); p_block->statements.push_back(cf); Error err = _parse_block(block, p_builtin_types, true, p_can_break, p_can_continue); if (err) return err; pos = _get_tkpos(); tk = _get_token(); if (tk.type == TK_CF_ELSE) { block = alloc_node(); block->parent_block = p_block; cf->blocks.push_back(block); err = _parse_block(block, p_builtin_types, true, p_can_break, p_can_continue); } else { _set_tkpos(pos); //rollback } } else if (tk.type == TK_CF_WHILE) { //if () {} tk = _get_token(); if (tk.type != TK_PARENTHESIS_OPEN) { _set_error("Expected '(' after while"); return ERR_PARSE_ERROR; } ControlFlowNode *cf = alloc_node(); cf->flow_op = FLOW_OP_WHILE; Node *n = _parse_and_reduce_expression(p_block, p_builtin_types); if (!n) return ERR_PARSE_ERROR; tk = _get_token(); if (tk.type != TK_PARENTHESIS_CLOSE) { _set_error("Expected ')' after expression"); return ERR_PARSE_ERROR; } BlockNode *block = alloc_node(); block->parent_block = p_block; cf->expressions.push_back(n); cf->blocks.push_back(block); p_block->statements.push_back(cf); Error err = _parse_block(block, p_builtin_types, true, true, true); if (err) return err; } else if (tk.type == TK_CF_FOR) { //if () {} tk = _get_token(); if (tk.type != TK_PARENTHESIS_OPEN) { _set_error("Expected '(' after for"); return ERR_PARSE_ERROR; } ControlFlowNode *cf = alloc_node(); cf->flow_op = FLOW_OP_FOR; BlockNode *init_block = alloc_node(); init_block->parent_block = p_block; init_block->single_statement = true; cf->blocks.push_back(init_block); if (_parse_block(init_block, p_builtin_types, true, false, false) != OK) { return ERR_PARSE_ERROR; } Node *n = _parse_and_reduce_expression(init_block, p_builtin_types); if (!n) return ERR_PARSE_ERROR; if (n->get_datatype() != TYPE_BOOL) { _set_error("Middle expression is expected to be boolean."); return ERR_PARSE_ERROR; } tk = _get_token(); if (tk.type != TK_SEMICOLON) { _set_error("Expected ';' after middle expression"); return ERR_PARSE_ERROR; } cf->expressions.push_back(n); n = _parse_and_reduce_expression(init_block, p_builtin_types); if (!n) return ERR_PARSE_ERROR; cf->expressions.push_back(n); tk = _get_token(); if (tk.type != TK_PARENTHESIS_CLOSE) { _set_error("Expected ')' after third expression"); return ERR_PARSE_ERROR; } BlockNode *block = alloc_node(); block->parent_block = init_block; cf->blocks.push_back(block); p_block->statements.push_back(cf); Error err = _parse_block(block, p_builtin_types, true, true, true); if (err) return err; } else if (tk.type == TK_CF_RETURN) { //check return type BlockNode *b = p_block; while (b && !b->parent_function) { b = b->parent_block; } if (!b) { _set_error("Bug"); return ERR_BUG; } ControlFlowNode *flow = alloc_node(); flow->flow_op = FLOW_OP_RETURN; pos = _get_tkpos(); tk = _get_token(); if (tk.type == TK_SEMICOLON) { //all is good if (b->parent_function->return_type != TYPE_VOID) { _set_error("Expected return with expression of type '" + get_datatype_name(b->parent_function->return_type) + "'"); return ERR_PARSE_ERROR; } } else { _set_tkpos(pos); //rollback, wants expression Node *expr = _parse_and_reduce_expression(p_block, p_builtin_types); if (!expr) return ERR_PARSE_ERROR; if (b->parent_function->return_type != expr->get_datatype()) { _set_error("Expected return expression of type '" + get_datatype_name(b->parent_function->return_type) + "'"); return ERR_PARSE_ERROR; } tk = _get_token(); if (tk.type != TK_SEMICOLON) { _set_error("Expected ';' after return expression"); return ERR_PARSE_ERROR; } flow->expressions.push_back(expr); } p_block->statements.push_back(flow); } else if (tk.type == TK_CF_DISCARD) { //check return type BlockNode *b = p_block; while (b && !b->parent_function) { b = b->parent_block; } if (!b) { _set_error("Bug"); return ERR_BUG; } if (!b->parent_function->can_discard) { _set_error("Use of 'discard' is not allowed here."); return ERR_PARSE_ERROR; } ControlFlowNode *flow = alloc_node(); flow->flow_op = FLOW_OP_DISCARD; pos = _get_tkpos(); tk = _get_token(); if (tk.type != TK_SEMICOLON) { //all is good _set_error("Expected ';' after discard"); } p_block->statements.push_back(flow); } else if (tk.type == TK_CF_BREAK) { if (!p_can_break) { //all is good _set_error("Breaking is not allowed here"); } ControlFlowNode *flow = alloc_node(); flow->flow_op = FLOW_OP_BREAK; pos = _get_tkpos(); tk = _get_token(); if (tk.type != TK_SEMICOLON) { //all is good _set_error("Expected ';' after break"); } p_block->statements.push_back(flow); } else if (tk.type == TK_CF_CONTINUE) { if (!p_can_break) { //all is good _set_error("Continuing is not allowed here"); } ControlFlowNode *flow = alloc_node(); flow->flow_op = FLOW_OP_CONTINUE; pos = _get_tkpos(); tk = _get_token(); if (tk.type != TK_SEMICOLON) { //all is good _set_error("Expected ';' after continue"); } p_block->statements.push_back(flow); } else { //nothng else, so expression _set_tkpos(pos); //rollback Node *expr = _parse_and_reduce_expression(p_block, p_builtin_types); if (!expr) return ERR_PARSE_ERROR; p_block->statements.push_back(expr); tk = _get_token(); if (tk.type != TK_SEMICOLON) { _set_error("Expected ';' after statement"); return ERR_PARSE_ERROR; } } if (p_just_one) break; } return OK; } Error ShaderLanguage::_parse_shader(const Map &p_functions, const Vector &p_render_modes, const Set &p_shader_types) { Token tk = _get_token(); if (tk.type != TK_SHADER_TYPE) { _set_error("Expected 'shader_type' at the beginning of shader."); return ERR_PARSE_ERROR; } tk = _get_token(); if (tk.type != TK_IDENTIFIER) { _set_error("Expected identifier after 'shader_type', indicating type of shader."); return ERR_PARSE_ERROR; } String shader_type_identifier; shader_type_identifier = tk.text; if (!p_shader_types.has(shader_type_identifier)) { String valid; for (Set::Element *E = p_shader_types.front(); E; E = E->next()) { if (valid != String()) { valid += ", "; } valid += "'" + E->get() + "'"; } _set_error("Invalid shader type, valid types are: " + valid); return ERR_PARSE_ERROR; } tk = _get_token(); if (tk.type != TK_SEMICOLON) { _set_error("Expected ';' after 'shader_type '."); } tk = _get_token(); int texture_uniforms = 0; int uniforms = 0; while (tk.type != TK_EOF) { switch (tk.type) { case TK_RENDER_MODE: { while (true) { StringName mode; _get_completable_identifier(NULL, COMPLETION_RENDER_MODE, mode); if (mode == StringName()) { _set_error("Expected identifier for render mode"); return ERR_PARSE_ERROR; } if (p_render_modes.find(mode) == -1) { _set_error("Invalid render mode: '" + String(mode) + "'"); return ERR_PARSE_ERROR; } if (shader->render_modes.find(mode) != -1) { _set_error("Duplicate render mode: '" + String(mode) + "'"); return ERR_PARSE_ERROR; } shader->render_modes.push_back(mode); tk = _get_token(); if (tk.type == TK_COMMA) { //all good, do nothing } else if (tk.type == TK_SEMICOLON) { break; //done } else { _set_error("Unexpected token: " + get_token_text(tk)); return ERR_PARSE_ERROR; } } } break; case TK_UNIFORM: case TK_VARYING: { bool uniform = tk.type == TK_UNIFORM; DataPrecision precision = PRECISION_DEFAULT; DataInterpolation interpolation = INTERPOLATION_SMOOTH; DataType type; StringName name; tk = _get_token(); if (is_token_interpolation(tk.type)) { interpolation = get_token_interpolation(tk.type); tk = _get_token(); } if (is_token_precision(tk.type)) { precision = get_token_precision(tk.type); tk = _get_token(); } if (!is_token_datatype(tk.type)) { _set_error("Expected datatype. "); return ERR_PARSE_ERROR; } type = get_token_datatype(tk.type); if (type == TYPE_VOID) { _set_error("void datatype not allowed here"); return ERR_PARSE_ERROR; } if (!uniform && (type < TYPE_FLOAT || type > TYPE_VEC4)) { _set_error("Invalid type for varying, only float,vec2,vec3,vec4 allowed."); return ERR_PARSE_ERROR; } tk = _get_token(); if (tk.type != TK_IDENTIFIER) { _set_error("Expected identifier!"); return ERR_PARSE_ERROR; } name = tk.text; if (_find_identifier(NULL, Map(), name)) { _set_error("Redefinition of '" + String(name) + "'"); return ERR_PARSE_ERROR; } if (uniform) { ShaderNode::Uniform uniform; if (is_sampler_type(type)) { uniform.texture_order = texture_uniforms++; uniform.order = -1; } else { uniform.texture_order = -1; uniform.order = uniforms++; } uniform.type = type; uniform.precission = precision; //todo parse default value tk = _get_token(); if (tk.type == TK_COLON) { //hint tk = _get_token(); if (tk.type == TK_HINT_WHITE_TEXTURE) { uniform.hint = ShaderNode::Uniform::HINT_WHITE; } else if (tk.type == TK_HINT_BLACK_TEXTURE) { uniform.hint = ShaderNode::Uniform::HINT_BLACK; } else if (tk.type == TK_HINT_NORMAL_TEXTURE) { uniform.hint = ShaderNode::Uniform::HINT_NORMAL; } else if (tk.type == TK_HINT_ANISO_TEXTURE) { uniform.hint = ShaderNode::Uniform::HINT_ANISO; } else if (tk.type == TK_HINT_ALBEDO_TEXTURE) { uniform.hint = ShaderNode::Uniform::HINT_ALBEDO; } else if (tk.type == TK_HINT_BLACK_ALBEDO_TEXTURE) { uniform.hint = ShaderNode::Uniform::HINT_BLACK_ALBEDO; } else if (tk.type == TK_HINT_COLOR) { if (type != TYPE_VEC4) { _set_error("Color hint is for vec4 only"); return ERR_PARSE_ERROR; } uniform.hint = ShaderNode::Uniform::HINT_COLOR; } else if (tk.type == TK_HINT_RANGE) { uniform.hint = ShaderNode::Uniform::HINT_RANGE; if (type != TYPE_FLOAT && type != TYPE_INT) { _set_error("Range hint is for float and int only"); return ERR_PARSE_ERROR; } tk = _get_token(); if (tk.type != TK_PARENTHESIS_OPEN) { _set_error("Expected '(' after hint_range"); return ERR_PARSE_ERROR; } tk = _get_token(); float sign = 1.0; if (tk.type == TK_OP_SUB) { sign = -1.0; tk = _get_token(); } if (tk.type != TK_REAL_CONSTANT && tk.type != TK_INT_CONSTANT) { _set_error("Expected integer constant"); return ERR_PARSE_ERROR; } uniform.hint_range[0] = tk.constant; uniform.hint_range[0] *= sign; tk = _get_token(); if (tk.type != TK_COMMA) { _set_error("Expected ',' after integer constant"); return ERR_PARSE_ERROR; } tk = _get_token(); sign = 1.0; if (tk.type == TK_OP_SUB) { sign = -1.0; tk = _get_token(); } if (tk.type != TK_REAL_CONSTANT && tk.type != TK_INT_CONSTANT) { _set_error("Expected integer constant after ','"); return ERR_PARSE_ERROR; } uniform.hint_range[1] = tk.constant; uniform.hint_range[1] *= sign; tk = _get_token(); if (tk.type == TK_COMMA) { tk = _get_token(); if (tk.type != TK_REAL_CONSTANT && tk.type != TK_INT_CONSTANT) { _set_error("Expected integer constant after ','"); return ERR_PARSE_ERROR; } uniform.hint_range[2] = tk.constant; tk = _get_token(); } else { if (type == TYPE_INT) { uniform.hint_range[2] = 1; } else { uniform.hint_range[2] = 0.001; } } if (tk.type != TK_PARENTHESIS_CLOSE) { _set_error("Expected ','"); return ERR_PARSE_ERROR; } } else { _set_error("Expected valid type hint after ':'."); } if (uniform.hint != ShaderNode::Uniform::HINT_RANGE && uniform.hint != ShaderNode::Uniform::HINT_NONE && uniform.hint != ShaderNode::Uniform::HINT_COLOR && type <= TYPE_MAT4) { _set_error("This hint is only for sampler types"); return ERR_PARSE_ERROR; } tk = _get_token(); } if (tk.type == TK_OP_ASSIGN) { Node *expr = _parse_and_reduce_expression(NULL, Map()); if (!expr) return ERR_PARSE_ERROR; if (expr->type != Node::TYPE_CONSTANT) { _set_error("Expected constant expression after '='"); return ERR_PARSE_ERROR; } ConstantNode *cn = static_cast(expr); uniform.default_value.resize(cn->values.size()); if (!convert_constant(cn, uniform.type, uniform.default_value.ptrw())) { _set_error("Can't convert constant to " + get_datatype_name(uniform.type)); return ERR_PARSE_ERROR; } tk = _get_token(); } shader->uniforms[name] = uniform; if (tk.type != TK_SEMICOLON) { _set_error("Expected ';'"); return ERR_PARSE_ERROR; } } else { ShaderNode::Varying varying; varying.type = type; varying.precission = precision; varying.interpolation = interpolation; shader->varyings[name] = varying; tk = _get_token(); if (tk.type != TK_SEMICOLON) { _set_error("Expected ';'"); return ERR_PARSE_ERROR; } } } break; default: { //function DataPrecision precision = PRECISION_DEFAULT; DataType type; StringName name; if (is_token_precision(tk.type)) { precision = get_token_precision(tk.type); tk = _get_token(); } if (!is_token_datatype(tk.type)) { _set_error("Expected function, uniform or varying "); return ERR_PARSE_ERROR; } type = get_token_datatype(tk.type); _get_completable_identifier(NULL, COMPLETION_MAIN_FUNCTION, name); if (name == StringName()) { _set_error("Expected function name after datatype"); return ERR_PARSE_ERROR; } if (_find_identifier(NULL, Map(), name)) { _set_error("Redefinition of '" + String(name) + "'"); return ERR_PARSE_ERROR; } tk = _get_token(); if (tk.type != TK_PARENTHESIS_OPEN) { _set_error("Expected '(' after identifier"); return ERR_PARSE_ERROR; } Map builtin_types; if (p_functions.has(name)) { builtin_types = p_functions[name].built_ins; } ShaderNode::Function function; function.callable = !p_functions.has(name); function.name = name; FunctionNode *func_node = alloc_node(); function.function = func_node; shader->functions.push_back(function); func_node->name = name; func_node->return_type = type; func_node->return_precision = precision; if (p_functions.has(name)) { func_node->can_discard = p_functions[name].can_discard; } func_node->body = alloc_node(); func_node->body->parent_function = func_node; tk = _get_token(); while (true) { if (tk.type == TK_PARENTHESIS_CLOSE) { break; } ArgumentQualifier qualifier = ARGUMENT_QUALIFIER_IN; if (tk.type == TK_ARG_IN) { qualifier = ARGUMENT_QUALIFIER_IN; tk = _get_token(); } else if (tk.type == TK_ARG_OUT) { qualifier = ARGUMENT_QUALIFIER_OUT; tk = _get_token(); } else if (tk.type == TK_ARG_INOUT) { qualifier = ARGUMENT_QUALIFIER_INOUT; tk = _get_token(); } DataType ptype; StringName pname; DataPrecision pprecision = PRECISION_DEFAULT; if (is_token_precision(tk.type)) { pprecision = get_token_precision(tk.type); tk = _get_token(); } if (!is_token_datatype(tk.type)) { _set_error("Expected a valid datatype for argument"); return ERR_PARSE_ERROR; } ptype = get_token_datatype(tk.type); if (ptype == TYPE_VOID) { _set_error("void not allowed in argument"); return ERR_PARSE_ERROR; } tk = _get_token(); if (tk.type != TK_IDENTIFIER) { _set_error("Expected identifier for argument name"); return ERR_PARSE_ERROR; } pname = tk.text; if (_find_identifier(func_node->body, builtin_types, pname)) { _set_error("Redefinition of '" + String(pname) + "'"); return ERR_PARSE_ERROR; } FunctionNode::Argument arg; arg.type = ptype; arg.name = pname; arg.precision = pprecision; arg.qualifier = qualifier; func_node->arguments.push_back(arg); tk = _get_token(); if (tk.type == TK_COMMA) { tk = _get_token(); //do none and go on } else if (tk.type != TK_PARENTHESIS_CLOSE) { _set_error("Expected ',' or ')' after identifier"); return ERR_PARSE_ERROR; } } if (p_functions.has(name)) { //if one of the core functions, make sure they are of the correct form if (func_node->arguments.size() > 0) { _set_error("Function '" + String(name) + "' expects no arguments."); return ERR_PARSE_ERROR; } if (func_node->return_type != TYPE_VOID) { _set_error("Function '" + String(name) + "' must be of void return type."); return ERR_PARSE_ERROR; } } //all good let's parse inside the function! tk = _get_token(); if (tk.type != TK_CURLY_BRACKET_OPEN) { _set_error("Expected '{' to begin function"); return ERR_PARSE_ERROR; } current_function = name; Error err = _parse_block(func_node->body, builtin_types); if (err) return err; current_function = StringName(); } } tk = _get_token(); } return OK; } // skips over whitespace and /* */ and // comments static int _get_first_ident_pos(const String &p_code) { int idx = 0; #define GETCHAR(m_idx) (((idx + m_idx) < p_code.length()) ? p_code[idx + m_idx] : CharType(0)) while (true) { if (GETCHAR(0) == '/' && GETCHAR(1) == '/') { idx += 2; while (true) { if (GETCHAR(0) == 0) return 0; if (GETCHAR(0) == '\n') { idx++; break; // loop } idx++; } } else if (GETCHAR(0) == '/' && GETCHAR(1) == '*') { idx += 2; while (true) { if (GETCHAR(0) == 0) return 0; if (GETCHAR(0) == '*' && GETCHAR(1) == '/') { idx += 2; break; // loop } idx++; } } else { switch (GETCHAR(0)) { case ' ': case '\t': case '\r': case '\n': { idx++; } break; // switch default: return idx; } } } #undef GETCHAR } String ShaderLanguage::get_shader_type(const String &p_code) { bool reading_type = false; String cur_identifier; for (int i = _get_first_ident_pos(p_code); i < p_code.length(); i++) { if (p_code[i] == ';') { break; } else if (p_code[i] <= 32) { if (cur_identifier != String()) { if (!reading_type) { if (cur_identifier != "shader_type") { return String(); } reading_type = true; cur_identifier = String(); } else { return cur_identifier; } } } else { cur_identifier += String::chr(p_code[i]); } } if (reading_type) return cur_identifier; return String(); } Error ShaderLanguage::compile(const String &p_code, const Map &p_functions, const Vector &p_render_modes, const Set &p_shader_types) { clear(); code = p_code; nodes = NULL; shader = alloc_node(); Error err = _parse_shader(p_functions, p_render_modes, p_shader_types); if (err != OK) { return err; } return OK; } Error ShaderLanguage::complete(const String &p_code, const Map &p_functions, const Vector &p_render_modes, const Set &p_shader_types, List *r_options, String &r_call_hint) { clear(); code = p_code; nodes = NULL; shader = alloc_node(); Error err = _parse_shader(p_functions, p_render_modes, p_shader_types); if (err != OK) ERR_PRINT("Failed to parse shader"); switch (completion_type) { case COMPLETION_NONE: { //do nothing return OK; } break; case COMPLETION_RENDER_MODE: { for (int i = 0; i < p_render_modes.size(); i++) { r_options->push_back(p_render_modes[i]); } return OK; } break; case COMPLETION_MAIN_FUNCTION: { for (const Map::Element *E = p_functions.front(); E; E = E->next()) { r_options->push_back(E->key()); } return OK; } break; case COMPLETION_IDENTIFIER: case COMPLETION_FUNCTION_CALL: { bool comp_ident = completion_type == COMPLETION_IDENTIFIER; Set matches; StringName skip_function; BlockNode *block = completion_block; while (block) { if (comp_ident) { for (const Map::Element *E = block->variables.front(); E; E = E->next()) { if (E->get().line < completion_line) { matches.insert(E->key()); } } } if (block->parent_function) { if (comp_ident) { for (int i = 0; i < block->parent_function->arguments.size(); i++) { matches.insert(block->parent_function->arguments[i].name); } } skip_function = block->parent_function->name; } block = block->parent_block; } if (comp_ident && skip_function != StringName() && p_functions.has(skip_function)) { for (Map::Element *E = p_functions[skip_function].built_ins.front(); E; E = E->next()) { matches.insert(E->key()); } } if (comp_ident) { for (const Map::Element *E = shader->varyings.front(); E; E = E->next()) { matches.insert(E->key()); } for (const Map::Element *E = shader->uniforms.front(); E; E = E->next()) { matches.insert(E->key()); } } for (int i = 0; i < shader->functions.size(); i++) { if (!shader->functions[i].callable || shader->functions[i].name == skip_function) continue; matches.insert(String(shader->functions[i].name) + "("); } int idx = 0; while (builtin_func_defs[idx].name) { matches.insert(String(builtin_func_defs[idx].name) + "("); idx++; } for (Set::Element *E = matches.front(); E; E = E->next()) { r_options->push_back(E->get()); } return OK; } break; case COMPLETION_CALL_ARGUMENTS: { for (int i = 0; i < shader->functions.size(); i++) { if (!shader->functions[i].callable) continue; if (shader->functions[i].name == completion_function) { String calltip; calltip += get_datatype_name(shader->functions[i].function->return_type); calltip += " "; calltip += shader->functions[i].name; calltip += "("; for (int j = 0; j < shader->functions[i].function->arguments.size(); j++) { if (j > 0) calltip += ", "; else calltip += " "; if (j == completion_argument) { calltip += CharType(0xFFFF); } calltip += get_datatype_name(shader->functions[i].function->arguments[j].type); calltip += " "; calltip += shader->functions[i].function->arguments[j].name; if (j == completion_argument) { calltip += CharType(0xFFFF); } } if (shader->functions[i].function->arguments.size()) calltip += " "; calltip += ")"; r_call_hint = calltip; return OK; } } int idx = 0; String calltip; while (builtin_func_defs[idx].name) { if (completion_function == builtin_func_defs[idx].name) { if (calltip.length()) calltip += "\n"; calltip += get_datatype_name(builtin_func_defs[idx].rettype); calltip += " "; calltip += builtin_func_defs[idx].name; calltip += "("; bool found_arg = false; for (int i = 0; i < 4; i++) { if (builtin_func_defs[idx].args[i] == TYPE_VOID) break; if (i > 0) calltip += ", "; else calltip += " "; if (i == completion_argument) { calltip += CharType(0xFFFF); } calltip += get_datatype_name(builtin_func_defs[idx].args[i]); if (i == completion_argument) { calltip += CharType(0xFFFF); } found_arg = true; } if (found_arg) calltip += " "; calltip += ")"; } idx++; } r_call_hint = calltip; return OK; } break; case COMPLETION_INDEX: { const char colv[4] = { 'r', 'g', 'b', 'a' }; const char coordv[4] = { 'x', 'y', 'z', 'w' }; int limit = 0; switch (completion_base) { case TYPE_BVEC2: case TYPE_IVEC2: case TYPE_UVEC2: case TYPE_VEC2: { limit = 2; } break; case TYPE_BVEC3: case TYPE_IVEC3: case TYPE_UVEC3: case TYPE_VEC3: { limit = 3; } break; case TYPE_BVEC4: case TYPE_IVEC4: case TYPE_UVEC4: case TYPE_VEC4: { limit = 4; } break; case TYPE_MAT2: limit = 2; break; case TYPE_MAT3: limit = 3; break; case TYPE_MAT4: limit = 4; break; default: {} } for (int i = 0; i < limit; i++) { r_options->push_back(String::chr(colv[i])); r_options->push_back(String::chr(coordv[i])); } } break; } return ERR_PARSE_ERROR; } String ShaderLanguage::get_error_text() { return error_str; } int ShaderLanguage::get_error_line() { return error_line; } ShaderLanguage::ShaderNode *ShaderLanguage::get_shader() { return shader; } ShaderLanguage::ShaderLanguage() { nodes = NULL; } ShaderLanguage::~ShaderLanguage() { clear(); }