diff options
Diffstat (limited to 'drivers/gles2/rasterizer_gles2.cpp')
| -rw-r--r-- | drivers/gles2/rasterizer_gles2.cpp | 416 |
1 files changed, 416 insertions, 0 deletions
diff --git a/drivers/gles2/rasterizer_gles2.cpp b/drivers/gles2/rasterizer_gles2.cpp new file mode 100644 index 0000000000..9339167c8e --- /dev/null +++ b/drivers/gles2/rasterizer_gles2.cpp @@ -0,0 +1,416 @@ +/*************************************************************************/ +/* rasterizer_gles2.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 "rasterizer_gles2.h" + +#include "gl_context/context_gl.h" +#include "os/os.h" +#include "project_settings.h" +#include <string.h> + +#define _EXT_DEBUG_OUTPUT_SYNCHRONOUS_ARB 0x8242 +#define _EXT_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH_ARB 0x8243 +#define _EXT_DEBUG_CALLBACK_FUNCTION_ARB 0x8244 +#define _EXT_DEBUG_CALLBACK_USER_PARAM_ARB 0x8245 +#define _EXT_DEBUG_SOURCE_API_ARB 0x8246 +#define _EXT_DEBUG_SOURCE_WINDOW_SYSTEM_ARB 0x8247 +#define _EXT_DEBUG_SOURCE_SHADER_COMPILER_ARB 0x8248 +#define _EXT_DEBUG_SOURCE_THIRD_PARTY_ARB 0x8249 +#define _EXT_DEBUG_SOURCE_APPLICATION_ARB 0x824A +#define _EXT_DEBUG_SOURCE_OTHER_ARB 0x824B +#define _EXT_DEBUG_TYPE_ERROR_ARB 0x824C +#define _EXT_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB 0x824D +#define _EXT_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB 0x824E +#define _EXT_DEBUG_TYPE_PORTABILITY_ARB 0x824F +#define _EXT_DEBUG_TYPE_PERFORMANCE_ARB 0x8250 +#define _EXT_DEBUG_TYPE_OTHER_ARB 0x8251 +#define _EXT_MAX_DEBUG_MESSAGE_LENGTH_ARB 0x9143 +#define _EXT_MAX_DEBUG_LOGGED_MESSAGES_ARB 0x9144 +#define _EXT_DEBUG_LOGGED_MESSAGES_ARB 0x9145 +#define _EXT_DEBUG_SEVERITY_HIGH_ARB 0x9146 +#define _EXT_DEBUG_SEVERITY_MEDIUM_ARB 0x9147 +#define _EXT_DEBUG_SEVERITY_LOW_ARB 0x9148 +#define _EXT_DEBUG_OUTPUT 0x92E0 + +#if (defined WINDOWS_ENABLED) && !(defined UWP_ENABLED) +#define GLAPIENTRY APIENTRY +#else +#define GLAPIENTRY +#endif + +static void GLAPIENTRY _gl_debug_print(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, const GLvoid *userParam) { + + if (type == _EXT_DEBUG_TYPE_OTHER_ARB) + return; + + if (type == _EXT_DEBUG_TYPE_PERFORMANCE_ARB) + return; //these are ultimately annoying, so removing for now + + char debSource[256], debType[256], debSev[256]; + if (source == _EXT_DEBUG_SOURCE_API_ARB) + strcpy(debSource, "OpenGL"); + else if (source == _EXT_DEBUG_SOURCE_WINDOW_SYSTEM_ARB) + strcpy(debSource, "Windows"); + else if (source == _EXT_DEBUG_SOURCE_SHADER_COMPILER_ARB) + strcpy(debSource, "Shader Compiler"); + else if (source == _EXT_DEBUG_SOURCE_THIRD_PARTY_ARB) + strcpy(debSource, "Third Party"); + else if (source == _EXT_DEBUG_SOURCE_APPLICATION_ARB) + strcpy(debSource, "Application"); + else if (source == _EXT_DEBUG_SOURCE_OTHER_ARB) + strcpy(debSource, "Other"); + + if (type == _EXT_DEBUG_TYPE_ERROR_ARB) + strcpy(debType, "Error"); + else if (type == _EXT_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB) + strcpy(debType, "Deprecated behavior"); + else if (type == _EXT_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB) + strcpy(debType, "Undefined behavior"); + else if (type == _EXT_DEBUG_TYPE_PORTABILITY_ARB) + strcpy(debType, "Portability"); + else if (type == _EXT_DEBUG_TYPE_PERFORMANCE_ARB) + strcpy(debType, "Performance"); + else if (type == _EXT_DEBUG_TYPE_OTHER_ARB) + strcpy(debType, "Other"); + + if (severity == _EXT_DEBUG_SEVERITY_HIGH_ARB) + strcpy(debSev, "High"); + else if (severity == _EXT_DEBUG_SEVERITY_MEDIUM_ARB) + strcpy(debSev, "Medium"); + else if (severity == _EXT_DEBUG_SEVERITY_LOW_ARB) + strcpy(debSev, "Low"); + + String output = String() + "GL ERROR: Source: " + debSource + "\tType: " + debType + "\tID: " + itos(id) + "\tSeverity: " + debSev + "\tMessage: " + message; + + ERR_PRINTS(output); +} + +typedef void (*DEBUGPROCARB)(GLenum source, + GLenum type, + GLuint id, + GLenum severity, + GLsizei length, + const char *message, + const void *userParam); + +typedef void (*DebugMessageCallbackARB)(DEBUGPROCARB callback, const void *userParam); + +RasterizerStorage *RasterizerGLES2::get_storage() { + + return storage; +} + +RasterizerCanvas *RasterizerGLES2::get_canvas() { + + return canvas; +} + +RasterizerScene *RasterizerGLES2::get_scene() { + + return scene; +} + +void RasterizerGLES2::initialize() { + + if (OS::get_singleton()->is_stdout_verbose()) { + print_line("Using GLES2 video driver"); + } + +#ifdef GLAD_ENABLED + if (!gladLoadGL()) { + ERR_PRINT("Error initializing GLAD"); + } + +// GLVersion seems to be used for both GL and GL ES, so we need different version checks for them +#ifdef OPENGL_ENABLED // OpenGL 2.1 Profile required + if (GLVersion.major < 2) { +#else // OpenGL ES 3.0 + if (GLVersion.major < 2) { +#endif + ERR_PRINT("Your system's graphic drivers seem not to support OpenGL 2.1 / OpenGL ES 2.0, sorry :(\n" + "Try a drivers update, buy a new GPU or try software rendering on Linux; Godot will now crash with a segmentation fault."); + OS::get_singleton()->alert("Your system's graphic drivers seem not to support OpenGL 2.1 / OpenGL ES 2.0, sorry :(\n" + "Godot Engine will self-destruct as soon as you acknowledge this error message.", + "Fatal error: Insufficient OpenGL / GLES driver support"); + } + +#ifdef GLES_OVER_GL + //Test GL_ARB_framebuffer_object extension + if (!GLAD_GL_ARB_framebuffer_object) { + //Try older GL_EXT_framebuffer_object extension + if (GLAD_GL_EXT_framebuffer_object) { + glIsRenderbuffer = glIsRenderbufferEXT; + glBindRenderbuffer = glBindRenderbufferEXT; + glDeleteRenderbuffers = glDeleteRenderbuffersEXT; + glGenRenderbuffers = glGenRenderbuffersEXT; + glRenderbufferStorage = glRenderbufferStorageEXT; + glGetRenderbufferParameteriv = glGetRenderbufferParameterivEXT; + glIsFramebuffer = glIsFramebufferEXT; + glBindFramebuffer = glBindFramebufferEXT; + glDeleteFramebuffers = glDeleteFramebuffersEXT; + glGenFramebuffers = glGenFramebuffersEXT; + glCheckFramebufferStatus = glCheckFramebufferStatusEXT; + glFramebufferTexture1D = glFramebufferTexture1DEXT; + glFramebufferTexture2D = glFramebufferTexture2DEXT; + glFramebufferTexture3D = glFramebufferTexture3DEXT; + glFramebufferRenderbuffer = glFramebufferRenderbufferEXT; + glGetFramebufferAttachmentParameteriv = glGetFramebufferAttachmentParameterivEXT; + glGenerateMipmap = glGenerateMipmapEXT; + } else { + ERR_PRINT("Your system's graphic drivers seem not to support GL_ARB(EXT)_framebuffer_object OpenGL extension, sorry :(\n" + "Try a drivers update, buy a new GPU or try software rendering on Linux; Godot will now crash with a segmentation fault."); + OS::get_singleton()->alert("Your system's graphic drivers seem not to support GL_ARB(EXT)_framebuffer_object OpenGL extension, sorry :(\n" + "Godot Engine will self-destruct as soon as you acknowledge this error message.", + "Fatal error: Insufficient OpenGL / GLES driver support"); + } + } +#endif + if (true || OS::get_singleton()->is_stdout_verbose()) { + if (GLAD_GL_ARB_debug_output) { + glEnable(_EXT_DEBUG_OUTPUT_SYNCHRONOUS_ARB); + glDebugMessageCallbackARB(_gl_debug_print, NULL); + glEnable(_EXT_DEBUG_OUTPUT); + } else { + print_line("OpenGL debugging not supported!"); + } + } + +#endif // GLAD_ENABLED + + // For debugging +#ifdef GLES_OVER_GL + if (GLAD_GL_ARB_debug_output) { + glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_ERROR_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE); + glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE); + glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE); + glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_PORTABILITY_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE); + glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_PERFORMANCE_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE); + glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_OTHER_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, NULL, GL_TRUE); + /* glDebugMessageInsertARB( + GL_DEBUG_SOURCE_API_ARB, + GL_DEBUG_TYPE_OTHER_ARB, 1, + GL_DEBUG_SEVERITY_HIGH_ARB, 5, "hello"); + */ + } +#endif + + const GLubyte *renderer = glGetString(GL_RENDERER); + print_line("OpenGL ES 2.0 Renderer: " + String((const char *)renderer)); + storage->initialize(); + canvas->initialize(); + scene->initialize(); +} + +void RasterizerGLES2::begin_frame() { + uint64_t tick = OS::get_singleton()->get_ticks_usec(); + + double delta = double(tick - prev_ticks) / 1000000.0; + delta *= Engine::get_singleton()->get_time_scale(); + + time_total += delta; + + if (delta == 0) { + //to avoid hiccups + delta = 0.001; + } + + prev_ticks = tick; + + // double time_roll_over = GLOBAL_GET("rendering/limits/time/time_rollover_secs"); + // if (time_total > time_roll_over) + // time_total = 0; //roll over every day (should be customz + + storage->frame.time[0] = time_total; + storage->frame.time[1] = Math::fmod(time_total, 3600); + storage->frame.time[2] = Math::fmod(time_total, 900); + storage->frame.time[3] = Math::fmod(time_total, 60); + storage->frame.count++; + storage->frame.delta = delta; + + storage->frame.prev_tick = tick; + + storage->update_dirty_resources(); + + storage->info.render_final = storage->info.render; + storage->info.render.reset(); + + scene->iteration(); +} + +void RasterizerGLES2::set_current_render_target(RID p_render_target) { + + if (!p_render_target.is_valid() && storage->frame.current_rt && storage->frame.clear_request) { + // pending clear request. Do that first. + glBindFramebuffer(GL_FRAMEBUFFER, storage->frame.current_rt->fbo); + glClearColor(storage->frame.clear_request_color.r, + storage->frame.clear_request_color.g, + storage->frame.clear_request_color.b, + storage->frame.clear_request_color.a); + glClear(GL_COLOR_BUFFER_BIT); + } + + if (p_render_target.is_valid()) { + RasterizerStorageGLES2::RenderTarget *rt = storage->render_target_owner.getornull(p_render_target); + storage->frame.current_rt = rt; + ERR_FAIL_COND(!rt); + storage->frame.clear_request = false; + + glViewport(0, 0, rt->width, rt->height); + } else { + storage->frame.current_rt = NULL; + storage->frame.clear_request = false; + glViewport(0, 0, OS::get_singleton()->get_window_size().width, OS::get_singleton()->get_window_size().height); + glBindFramebuffer(GL_FRAMEBUFFER, RasterizerStorageGLES2::system_fbo); + } +} + +void RasterizerGLES2::restore_render_target() { + ERR_FAIL_COND(storage->frame.current_rt == NULL); + RasterizerStorageGLES2::RenderTarget *rt = storage->frame.current_rt; + glBindFramebuffer(GL_FRAMEBUFFER, rt->fbo); + glViewport(0, 0, rt->width, rt->height); +} + +void RasterizerGLES2::clear_render_target(const Color &p_color) { + ERR_FAIL_COND(!storage->frame.current_rt); + + storage->frame.clear_request = true; + storage->frame.clear_request_color = p_color; +} + +void RasterizerGLES2::set_boot_image(const Ref<Image> &p_image, const Color &p_color, bool p_scale) { + + if (p_image.is_null() || p_image->empty()) + return; + + int window_w = OS::get_singleton()->get_video_mode(0).width; + int window_h = OS::get_singleton()->get_video_mode(0).height; + + glBindFramebuffer(GL_FRAMEBUFFER, 0); + glViewport(0, 0, window_w, window_h); + glDisable(GL_BLEND); + glDepthMask(GL_FALSE); + glClearColor(p_color.r, p_color.g, p_color.b, p_color.a); + glClear(GL_COLOR_BUFFER_BIT); + + canvas->canvas_begin(); + + RID texture = storage->texture_create(); + storage->texture_allocate(texture, p_image->get_width(), p_image->get_height(), p_image->get_format(), VS::TEXTURE_FLAG_FILTER); + storage->texture_set_data(texture, p_image); + + Rect2 imgrect(0, 0, p_image->get_width(), p_image->get_height()); + Rect2 screenrect; + + screenrect = imgrect; + screenrect.position += ((Size2(window_w, window_h) - screenrect.size) / 2.0).floor(); + + RasterizerStorageGLES2::Texture *t = storage->texture_owner.get(texture); + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, t->tex_id); + canvas->draw_generic_textured_rect(screenrect, Rect2(0, 0, 1, 1)); + glBindTexture(GL_TEXTURE_2D, 0); + canvas->canvas_end(); + + storage->free(texture); + + OS::get_singleton()->swap_buffers(); +} + +void RasterizerGLES2::blit_render_target_to_screen(RID p_render_target, const Rect2 &p_screen_rect, int p_screen) { + + ERR_FAIL_COND(storage->frame.current_rt); + + RasterizerStorageGLES2::RenderTarget *rt = storage->render_target_owner.getornull(p_render_target); + ERR_FAIL_COND(!rt); + + canvas->state.canvas_shader.set_conditional(CanvasShaderGLES2::USE_TEXTURE_RECT, true); + canvas->state.canvas_shader.set_conditional(CanvasShaderGLES2::USE_UV_ATTRIBUTE, false); + + canvas->state.canvas_shader.bind(); + + canvas->canvas_begin(); + canvas->state.canvas_shader.set_uniform(CanvasShaderGLES2::BLIT_PASS, true); + glDisable(GL_BLEND); + glBindFramebuffer(GL_FRAMEBUFFER, RasterizerStorageGLES2::system_fbo); + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, rt->color); + + // TODO normals + + canvas->draw_generic_textured_rect(p_screen_rect, Rect2(0, 0, 1, -1)); + + canvas->state.canvas_shader.set_uniform(CanvasShaderGLES2::BLIT_PASS, false); + + glBindTexture(GL_TEXTURE_2D, 0); + canvas->canvas_end(); +} + +void RasterizerGLES2::end_frame(bool p_swap_buffers) { + if (p_swap_buffers) + OS::get_singleton()->swap_buffers(); + else + glFinish(); +} + +void RasterizerGLES2::finalize() { +} + +Rasterizer *RasterizerGLES2::_create_current() { + + return memnew(RasterizerGLES2); +} + +void RasterizerGLES2::make_current() { + _create_func = _create_current; +} + +void RasterizerGLES2::register_config() { +} + +RasterizerGLES2::RasterizerGLES2() { + + storage = memnew(RasterizerStorageGLES2); + canvas = memnew(RasterizerCanvasGLES2); + scene = memnew(RasterizerSceneGLES2); + canvas->storage = storage; + canvas->scene_render = scene; + storage->canvas = canvas; + scene->storage = storage; + storage->scene = scene; + + prev_ticks = 0; + time_total = 0; +} + +RasterizerGLES2::~RasterizerGLES2() { + + memdelete(storage); + memdelete(canvas); +} |