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Diffstat (limited to 'servers/rendering/rendering_device_binds.cpp')
| -rw-r--r-- | servers/rendering/rendering_device_binds.cpp | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/servers/rendering/rendering_device_binds.cpp b/servers/rendering/rendering_device_binds.cpp new file mode 100644 index 0000000000..0400cebfdc --- /dev/null +++ b/servers/rendering/rendering_device_binds.cpp @@ -0,0 +1,205 @@ +/*************************************************************************/ +/* rendering_device_binds.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2020 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 "rendering_device_binds.h" + +Error RDShaderFile::parse_versions_from_text(const String &p_text, const String p_defines, OpenIncludeFunction p_include_func, void *p_include_func_userdata) { + Vector<String> lines = p_text.split("\n"); + + bool reading_versions = false; + bool stage_found[RD::SHADER_STAGE_MAX] = { false, false, false, false, false }; + RD::ShaderStage stage = RD::SHADER_STAGE_MAX; + static const char *stage_str[RD::SHADER_STAGE_MAX] = { + "vertex", + "fragment", + "tesselation_control", + "tesselation_evaluation", + "compute", + }; + String stage_code[RD::SHADER_STAGE_MAX]; + int stages_found = 0; + Map<StringName, String> version_texts; + + versions.clear(); + base_error = ""; + + for (int lidx = 0; lidx < lines.size(); lidx++) { + String line = lines[lidx]; + + { + String ls = line.strip_edges(); + if (ls.begins_with("#[") && ls.ends_with("]")) { + String section = ls.substr(2, ls.length() - 3).strip_edges(); + if (section == "versions") { + if (stages_found) { + base_error = "Invalid shader file, #[versions] must be the first section found."; + break; + } + reading_versions = true; + } else { + for (int i = 0; i < RD::SHADER_STAGE_MAX; i++) { + if (section == stage_str[i]) { + if (stage_found[i]) { + base_error = "Invalid shader file, stage appears twice: " + section; + break; + } + + stage_found[i] = true; + stages_found++; + + stage = RD::ShaderStage(i); + reading_versions = false; + break; + } + } + + if (base_error != String()) { + break; + } + } + + continue; + } + } + + if (stage == RD::SHADER_STAGE_MAX && line.strip_edges() != "") { + line = line.strip_edges(); + if (line.begins_with("//") || line.begins_with("/*")) { + continue; //assuming comment (single line) + } + } + + if (reading_versions) { + String l = line.strip_edges(); + if (l != "") { + if (l.find("=") == -1) { + base_error = "Missing `=` in '" + l + "'. Version syntax is `version = \"<defines with C escaping>\";`."; + break; + } + if (l.find(";") == -1) { + // We don't require a semicolon per se, but it's needed for clang-format to handle things properly. + base_error = "Missing `;` in '" + l + "'. Version syntax is `version = \"<defines with C escaping>\";`."; + break; + } + Vector<String> slices = l.get_slice(";", 0).split("="); + String version = slices[0].strip_edges(); + if (!version.is_valid_identifier()) { + base_error = "Version names must be valid identifiers, found '" + version + "' instead."; + break; + } + String define = slices[1].strip_edges(); + if (!define.begins_with("\"") || !define.ends_with("\"")) { + base_error = "Version text must be quoted using \"\", instead found '" + define + "'."; + break; + } + define = "\n" + define.substr(1, define.length() - 2).c_unescape() + "\n"; // Add newline before and after just in case. + + version_texts[version] = define + "\n" + p_defines; + } + } else { + if (stage == RD::SHADER_STAGE_MAX && line.strip_edges() != "") { + base_error = "Text was found that does not belong to a valid section: " + line; + break; + } + + if (stage != RD::SHADER_STAGE_MAX) { + if (line.strip_edges().begins_with("#include")) { + if (p_include_func) { + //process include + String include = line.replace("#include", "").strip_edges(); + if (!include.begins_with("\"") || !include.ends_with("\"")) { + base_error = "Malformed #include syntax, expected #include \"<path>\", found instad: " + include; + break; + } + include = include.substr(1, include.length() - 2).strip_edges(); + String include_text = p_include_func(include, p_include_func_userdata); + if (include_text != String()) { + stage_code[stage] += "\n" + include_text + "\n"; + } else { + base_error = "#include failed for file '" + include + "'"; + } + } else { + base_error = "#include used, but no include function provided."; + } + } else { + stage_code[stage] += line + "\n"; + } + } + } + } + + Ref<RDShaderFile> shader_file; + shader_file.instance(); + + if (base_error == "") { + if (stage_found[RD::SHADER_STAGE_COMPUTE] && stages_found > 1) { + ERR_FAIL_V_MSG(ERR_PARSE_ERROR, "When writing compute shaders, [compute] mustbe the only stage present."); + } + + if (version_texts.empty()) { + version_texts[""] = ""; //make sure a default version exists + } + + bool errors_found = false; + + /* STEP 2, Compile the versions, add to shader file */ + + for (Map<StringName, String>::Element *E = version_texts.front(); E; E = E->next()) { + Ref<RDShaderBytecode> bytecode; + bytecode.instance(); + + for (int i = 0; i < RD::SHADER_STAGE_MAX; i++) { + String code = stage_code[i]; + if (code == String()) { + continue; + } + code = code.replace("VERSION_DEFINES", E->get()); + String error; + Vector<uint8_t> spirv = RenderingDevice::get_singleton()->shader_compile_from_source(RD::ShaderStage(i), code, RD::SHADER_LANGUAGE_GLSL, &error, false); + bytecode->set_stage_bytecode(RD::ShaderStage(i), spirv); + if (error != "") { + error += String() + "\n\nStage '" + stage_str[i] + "' source code: \n\n"; + Vector<String> sclines = code.split("\n"); + for (int j = 0; j < sclines.size(); j++) { + error += itos(j + 1) + "\t\t" + sclines[j] + "\n"; + } + errors_found = true; + } + bytecode->set_stage_compile_error(RD::ShaderStage(i), error); + } + + set_bytecode(bytecode, E->key()); + } + + return errors_found ? ERR_PARSE_ERROR : OK; + } else { + return ERR_PARSE_ERROR; + } +} |