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godot/drivers/gles3/rasterizer_gles3.cpp

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/*************************************************************************/
/* rasterizer_gles3.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 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_gles3.h"
#include "storage/utilities.h"
#ifdef GLES3_ENABLED
#include "core/config/project_settings.h"
#include "core/os/os.h"
#include "storage/texture_storage.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
#ifndef GLAPIENTRY
#if defined(WINDOWS_ENABLED) && !defined(UWP_ENABLED)
#define GLAPIENTRY APIENTRY
#else
#define GLAPIENTRY
#endif
#endif
#if !defined(IOS_ENABLED) && !defined(WEB_ENABLED)
// We include EGL below to get debug callback on GLES2 platforms,
// but EGL is not available on iOS.
#define CAN_DEBUG
#endif
#if !defined(GLES_OVER_GL) && defined(CAN_DEBUG)
#include <GLES3/gl3.h>
#include <GLES3/gl3ext.h>
#include <GLES3/gl3platform.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#endif
#if defined(MINGW_ENABLED) || defined(_MSC_VER)
#define strcpy strcpy_s
#endif
void RasterizerGLES3::begin_frame(double frame_step) {
frame++;
delta = frame_step;
time_total += frame_step;
double time_roll_over = GLOBAL_GET("rendering/limits/time/time_rollover_secs");
time_total = Math::fmod(time_total, time_roll_over);
canvas->set_time(time_total);
scene->set_time(time_total, frame_step);
GLES3::Utilities *utils = GLES3::Utilities::get_singleton();
utils->info.render_final = utils->info.render;
utils->info.render.reset();
//scene->iteration();
}
void RasterizerGLES3::end_frame(bool p_swap_buffers) {
if (p_swap_buffers) {
DisplayServer::get_singleton()->swap_buffers();
} else {
glFinish();
}
}
#ifdef CAN_DEBUG
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_PRINT(output);
}
#endif
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);
void RasterizerGLES3::initialize() {
print_line("OpenGL Renderer: " + RS::get_singleton()->get_video_adapter_name());
}
void RasterizerGLES3::finalize() {
memdelete(scene);
memdelete(canvas);
memdelete(gi);
memdelete(fog);
memdelete(copy_effects);
memdelete(light_storage);
memdelete(particles_storage);
memdelete(mesh_storage);
memdelete(material_storage);
memdelete(texture_storage);
memdelete(utilities);
memdelete(config);
}
RasterizerGLES3::RasterizerGLES3() {
#ifdef GLAD_ENABLED
if (!gladLoadGL()) {
ERR_PRINT("Error initializing GLAD");
// FIXME this is an early return from a constructor. Any other code using this instance will crash or the finalizer will crash, because none of
// the members of this instance are initialized, so this just makes debugging harder. It should either crash here intentionally,
// or we need to actually test for this situation before constructing this.
return;
}
#endif
#ifdef GLAD_ENABLED
if (OS::get_singleton()->is_stdout_verbose()) {
if (GLAD_GL_ARB_debug_output) {
glEnable(_EXT_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
glDebugMessageCallbackARB(_gl_debug_print, nullptr);
glEnable(_EXT_DEBUG_OUTPUT);
} else {
print_line("OpenGL debugging not supported!");
}
}
#endif // GLAD_ENABLED
// For debugging
#ifdef CAN_DEBUG
#ifdef GLES_OVER_GL
if (OS::get_singleton()->is_stdout_verbose() && GLAD_GL_ARB_debug_output) {
glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_ERROR_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, nullptr, GL_TRUE);
glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, nullptr, GL_TRUE);
glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, nullptr, GL_TRUE);
glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_PORTABILITY_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, nullptr, GL_TRUE);
glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_PERFORMANCE_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, nullptr, GL_TRUE);
glDebugMessageControlARB(_EXT_DEBUG_SOURCE_API_ARB, _EXT_DEBUG_TYPE_OTHER_ARB, _EXT_DEBUG_SEVERITY_HIGH_ARB, 0, nullptr, GL_TRUE);
// glDebugMessageInsertARB(
// GL_DEBUG_SOURCE_API_ARB,
// GL_DEBUG_TYPE_OTHER_ARB, 1,
// GL_DEBUG_SEVERITY_HIGH_ARB, 5, "hello");
}
#else
if (OS::get_singleton()->is_stdout_verbose()) {
DebugMessageCallbackARB callback = (DebugMessageCallbackARB)eglGetProcAddress("glDebugMessageCallback");
if (!callback) {
callback = (DebugMessageCallbackARB)eglGetProcAddress("glDebugMessageCallbackKHR");
}
if (callback) {
print_line("godot: ENABLING GL DEBUG");
glEnable(_EXT_DEBUG_OUTPUT_SYNCHRONOUS_ARB);
callback(_gl_debug_print, NULL);
glEnable(_EXT_DEBUG_OUTPUT);
}
}
#endif // GLES_OVER_GL
#endif // CAN_DEBUG
// OpenGL needs to be initialized before initializing the Rasterizers
config = memnew(GLES3::Config);
utilities = memnew(GLES3::Utilities);
texture_storage = memnew(GLES3::TextureStorage);
material_storage = memnew(GLES3::MaterialStorage);
mesh_storage = memnew(GLES3::MeshStorage);
particles_storage = memnew(GLES3::ParticlesStorage);
light_storage = memnew(GLES3::LightStorage);
copy_effects = memnew(GLES3::CopyEffects);
gi = memnew(GLES3::GI);
fog = memnew(GLES3::Fog);
canvas = memnew(RasterizerCanvasGLES3());
scene = memnew(RasterizerSceneGLES3());
}
RasterizerGLES3::~RasterizerGLES3() {
}
void RasterizerGLES3::prepare_for_blitting_render_targets() {
}
void RasterizerGLES3::_blit_render_target_to_screen(RID p_render_target, DisplayServer::WindowID p_screen, const Rect2 &p_screen_rect) {
GLES3::RenderTarget *rt = GLES3::TextureStorage::get_singleton()->get_render_target(p_render_target);
ERR_FAIL_COND(!rt);
glBindFramebuffer(GL_READ_FRAMEBUFFER, rt->fbo);
glReadBuffer(GL_COLOR_ATTACHMENT0);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, GLES3::TextureStorage::system_fbo);
// Flip content upside down to correct for coordinates.
glBlitFramebuffer(0, 0, rt->size.x, rt->size.y, 0, p_screen_rect.size.y, p_screen_rect.size.x, 0, GL_COLOR_BUFFER_BIT, GL_NEAREST);
}
// is this p_screen useless in a multi window environment?
void RasterizerGLES3::blit_render_targets_to_screen(DisplayServer::WindowID p_screen, const BlitToScreen *p_render_targets, int p_amount) {
for (int i = 0; i < p_amount; i++) {
const BlitToScreen &blit = p_render_targets[i];
RID rid_rt = blit.render_target;
Rect2 dst_rect = blit.dst_rect;
_blit_render_target_to_screen(rid_rt, p_screen, dst_rect);
}
}
void RasterizerGLES3::set_boot_image(const Ref<Image> &p_image, const Color &p_color, bool p_scale, bool p_use_filter) {
if (p_image.is_null() || p_image->is_empty()) {
return;
}
Size2i win_size = DisplayServer::get_singleton()->screen_get_size();
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glViewport(0, 0, win_size.width, win_size.height);
glDisable(GL_BLEND);
glDepthMask(GL_FALSE);
if (false) {
// if (OS::get_singleton()->get_window_per_pixel_transparency_enabled()) {
glClearColor(0.0, 0.0, 0.0, 0.0);
} else {
glClearColor(p_color.r, p_color.g, p_color.b, 1.0);
}
glClear(GL_COLOR_BUFFER_BIT);
RID texture = texture_storage->texture_allocate();
texture_storage->texture_2d_initialize(texture, p_image);
Rect2 imgrect(0, 0, p_image->get_width(), p_image->get_height());
Rect2 screenrect;
if (p_scale) {
if (win_size.width > win_size.height) {
//scale horizontally
screenrect.size.y = win_size.height;
screenrect.size.x = imgrect.size.x * win_size.height / imgrect.size.y;
screenrect.position.x = (win_size.width - screenrect.size.x) / 2;
} else {
//scale vertically
screenrect.size.x = win_size.width;
screenrect.size.y = imgrect.size.y * win_size.width / imgrect.size.x;
screenrect.position.y = (win_size.height - screenrect.size.y) / 2;
}
} else {
screenrect = imgrect;
screenrect.position += ((Size2(win_size.width, win_size.height) - screenrect.size) / 2.0).floor();
}
GLES3::Texture *t = texture_storage->get_texture(texture);
glActiveTexture(GL_TEXTURE0 + config->max_texture_image_units - 1);
glBindTexture(GL_TEXTURE_2D, t->tex_id);
glBindTexture(GL_TEXTURE_2D, 0);
texture_storage->texture_free(texture);
end_frame(true);
}
#endif // GLES3_ENABLED
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