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18fae65f38
gecko-dev/gfx/gl/GLContext.cpp
Nicholas Nethercote 18fae65f38 Bug 1563139 - Remove StaticPrefs.h. r=glandium 
This requires replacing inclusions of it with inclusions of more specific prefs
files.

The exception is that StaticPrefsAll.h, which is equivalent to StaticPrefs.h,
and is used in `Codegen.py` because doing something smarter is tricky and
suitable for a follow-up. As a result, any change to StaticPrefList.yaml will
still trigger recompilation of all the generated DOM bindings files, but that's
still a big improvement over trigger recompilation of every file that uses
static prefs.

Most of the changes in this commit are very boring. The only changes that are
not boring are modules/libpref/*, Codegen.py, and ServoBindings.toml.

Differential Revision: https://phabricator.services.mozilla.com/D39138

--HG--
extra : moz-landing-system : lando
2019-07-26 01:10:23 +00:00

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "GLContext.h"
#include <algorithm>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <regex>
#include <string>
#include <vector>
#ifdef MOZ_WIDGET_ANDROID
# include <sys/mman.h>
#endif
#include "GLBlitHelper.h"
#include "GLReadTexImageHelper.h"
#include "GLScreenBuffer.h"
#include "gfxCrashReporterUtils.h"
#include "gfxEnv.h"
#include "gfxUtils.h"
#include "GLContextProvider.h"
#include "GLTextureImage.h"
#include "nsPrintfCString.h"
#include "nsThreadUtils.h"
#include "prenv.h"
#include "prlink.h"
#include "ScopedGLHelpers.h"
#include "SharedSurfaceGL.h"
#include "GfxTexturesReporter.h"
#include "gfx2DGlue.h"
#include "mozilla/StaticPrefs_gfx.h"
#include "mozilla/StaticPrefs_gl.h"
#include "mozilla/IntegerPrintfMacros.h"
#include "mozilla/gfx/Logging.h"
#include "OGLShaderProgram.h" // for ShaderProgramType
#include "mozilla/DebugOnly.h"
#ifdef XP_MACOSX
# include <CoreServices/CoreServices.h>
#endif
#if defined(MOZ_WIDGET_COCOA)
# include "nsCocoaFeatures.h"
#endif
#ifdef MOZ_WIDGET_ANDROID
# include "mozilla/jni/Utils.h"
#endif
namespace mozilla {
namespace gl {
using namespace mozilla::gfx;
using namespace mozilla::layers;
MOZ_THREAD_LOCAL(uintptr_t) GLContext::sCurrentContext;
// If adding defines, don't forget to undefine symbols. See #undef block below.
// clang-format off
#define CORE_SYMBOL(x) { (PRFuncPtr*) &mSymbols.f##x, {{ "gl" #x }} }
#define CORE_EXT_SYMBOL2(x,y,z) { (PRFuncPtr*) &mSymbols.f##x, {{ "gl" #x, "gl" #x #y, "gl" #x #z }} }
#define EXT_SYMBOL2(x,y,z) { (PRFuncPtr*) &mSymbols.f##x, {{ "gl" #x #y, "gl" #x #z }} }
#define EXT_SYMBOL3(x,y,z,w) { (PRFuncPtr*) &mSymbols.f##x, {{ "gl" #x #y, "gl" #x #z, "gl" #x #w }} }
#define END_SYMBOLS { nullptr, {} }
// clang-format on
// should match the order of GLExtensions, and be null-terminated.
static const char* const sExtensionNames[] = {
"NO_EXTENSION",
"GL_AMD_compressed_ATC_texture",
"GL_ANGLE_depth_texture",
"GL_ANGLE_framebuffer_blit",
"GL_ANGLE_framebuffer_multisample",
"GL_ANGLE_instanced_arrays",
"GL_ANGLE_multiview",
"GL_ANGLE_texture_compression_dxt3",
"GL_ANGLE_texture_compression_dxt5",
"GL_ANGLE_timer_query",
"GL_APPLE_client_storage",
"GL_APPLE_fence",
"GL_APPLE_framebuffer_multisample",
"GL_APPLE_sync",
"GL_APPLE_texture_range",
"GL_APPLE_vertex_array_object",
"GL_ARB_ES2_compatibility",
"GL_ARB_ES3_compatibility",
"GL_ARB_color_buffer_float",
"GL_ARB_compatibility",
"GL_ARB_copy_buffer",
"GL_ARB_depth_texture",
"GL_ARB_draw_buffers",
"GL_ARB_draw_instanced",
"GL_ARB_framebuffer_object",
"GL_ARB_framebuffer_sRGB",
"GL_ARB_geometry_shader4",
"GL_ARB_half_float_pixel",
"GL_ARB_instanced_arrays",
"GL_ARB_internalformat_query",
"GL_ARB_invalidate_subdata",
"GL_ARB_map_buffer_range",
"GL_ARB_occlusion_query2",
"GL_ARB_pixel_buffer_object",
"GL_ARB_robust_buffer_access_behavior",
"GL_ARB_robustness",
"GL_ARB_sampler_objects",
"GL_ARB_seamless_cube_map",
"GL_ARB_shader_texture_lod",
"GL_ARB_sync",
"GL_ARB_texture_compression",
"GL_ARB_texture_compression_bptc",
"GL_ARB_texture_compression_rgtc",
"GL_ARB_texture_float",
"GL_ARB_texture_non_power_of_two",
"GL_ARB_texture_rectangle",
"GL_ARB_texture_rg",
"GL_ARB_texture_storage",
"GL_ARB_texture_swizzle",
"GL_ARB_timer_query",
"GL_ARB_transform_feedback2",
"GL_ARB_uniform_buffer_object",
"GL_ARB_vertex_array_object",
"GL_CHROMIUM_color_buffer_float_rgb",
"GL_CHROMIUM_color_buffer_float_rgba",
"GL_EXT_bgra",
"GL_EXT_blend_minmax",
"GL_EXT_color_buffer_float",
"GL_EXT_color_buffer_half_float",
"GL_EXT_copy_texture",
"GL_EXT_disjoint_timer_query",
"GL_EXT_draw_buffers",
"GL_EXT_draw_buffers2",
"GL_EXT_draw_instanced",
"GL_EXT_float_blend",
"GL_EXT_frag_depth",
"GL_EXT_framebuffer_blit",
"GL_EXT_framebuffer_multisample",
"GL_EXT_framebuffer_object",
"GL_EXT_framebuffer_sRGB",
"GL_EXT_gpu_shader4",
"GL_EXT_map_buffer_range",
"GL_EXT_multisampled_render_to_texture",
"GL_EXT_occlusion_query_boolean",
"GL_EXT_packed_depth_stencil",
"GL_EXT_read_format_bgra",
"GL_EXT_robustness",
"GL_EXT_sRGB",
"GL_EXT_sRGB_write_control",
"GL_EXT_shader_texture_lod",
"GL_EXT_texture3D",
"GL_EXT_texture_compression_bptc",
"GL_EXT_texture_compression_dxt1",
"GL_EXT_texture_compression_rgtc",
"GL_EXT_texture_compression_s3tc",
"GL_EXT_texture_compression_s3tc_srgb",
"GL_EXT_texture_filter_anisotropic",
"GL_EXT_texture_format_BGRA8888",
"GL_EXT_texture_sRGB",
"GL_EXT_texture_storage",
"GL_EXT_timer_query",
"GL_EXT_transform_feedback",
"GL_EXT_unpack_subimage",
"GL_IMG_read_format",
"GL_IMG_texture_compression_pvrtc",
"GL_IMG_texture_npot",
"GL_KHR_debug",
"GL_KHR_robust_buffer_access_behavior",
"GL_KHR_robustness",
"GL_KHR_texture_compression_astc_hdr",
"GL_KHR_texture_compression_astc_ldr",
"GL_NV_draw_instanced",
"GL_NV_fence",
"GL_NV_framebuffer_blit",
"GL_NV_geometry_program4",
"GL_NV_half_float",
"GL_NV_instanced_arrays",
"GL_NV_primitive_restart",
"GL_NV_texture_barrier",
"GL_NV_transform_feedback",
"GL_NV_transform_feedback2",
"GL_OES_EGL_image",
"GL_OES_EGL_image_external",
"GL_OES_EGL_sync",
"GL_OES_compressed_ETC1_RGB8_texture",
"GL_OES_depth24",
"GL_OES_depth32",
"GL_OES_depth_texture",
"GL_OES_element_index_uint",
"GL_OES_fbo_render_mipmap",
"GL_OES_framebuffer_object",
"GL_OES_packed_depth_stencil",
"GL_OES_rgb8_rgba8",
"GL_OES_standard_derivatives",
"GL_OES_stencil8",
"GL_OES_texture_3D",
"GL_OES_texture_float",
"GL_OES_texture_float_linear",
"GL_OES_texture_half_float",
"GL_OES_texture_half_float_linear",
"GL_OES_texture_npot",
"GL_OES_vertex_array_object",
"GL_OVR_multiview2"};
static bool ShouldUseTLSIsCurrent(bool useTLSIsCurrent) {
if (StaticPrefs::gl_use_tls_is_current() == 0) {
return useTLSIsCurrent;
}
return StaticPrefs::gl_use_tls_is_current() > 0;
}
static bool ParseVersion(const std::string& versionStr,
uint32_t* const out_major, uint32_t* const out_minor) {
static const std::regex kVersionRegex("([0-9]+)\\.([0-9]+)");
std::smatch match;
if (!std::regex_search(versionStr, match, kVersionRegex)) return false;
const auto& majorStr = match.str(1);
const auto& minorStr = match.str(2);
*out_major = atoi(majorStr.c_str());
*out_minor = atoi(minorStr.c_str());
return true;
}
/*static*/
uint8_t GLContext::ChooseDebugFlags(const CreateContextFlags createFlags) {
uint8_t debugFlags = 0;
#ifdef MOZ_GL_DEBUG
if (gfxEnv::GlDebug()) {
debugFlags |= GLContext::DebugFlagEnabled;
}
// Enables extra verbose output, informing of the start and finish of every GL
// call. Useful e.g. to record information to investigate graphics system
// crashes/lockups
if (gfxEnv::GlDebugVerbose()) {
debugFlags |= GLContext::DebugFlagTrace;
}
// Aborts on GL error. Can be useful to debug quicker code that is known not
// to generate any GL error in principle.
bool abortOnError = false;
if (createFlags & CreateContextFlags::NO_VALIDATION) {
abortOnError = true;
const auto fnStringsMatch = [](const char* a, const char* b) {
return strcmp(a, b) == 0;
};
const char* envAbortOnError = PR_GetEnv("MOZ_GL_DEBUG_ABORT_ON_ERROR");
if (envAbortOnError && fnStringsMatch(envAbortOnError, "0")) {
abortOnError = false;
}
}
if (abortOnError) {
debugFlags |= GLContext::DebugFlagAbortOnError;
}
#endif
return debugFlags;
}
GLContext::GLContext(CreateContextFlags flags, const SurfaceCaps& caps,
GLContext* sharedContext, bool isOffscreen,
bool useTLSIsCurrent)
: mUseTLSIsCurrent(ShouldUseTLSIsCurrent(useTLSIsCurrent)),
mIsOffscreen(isOffscreen),
mDebugFlags(ChooseDebugFlags(flags)),
mSharedContext(sharedContext),
mCaps(caps),
mWorkAroundDriverBugs(
StaticPrefs::gfx_work_around_driver_bugs_AtStartup()) {
mOwningThreadId = PlatformThread::CurrentId();
MOZ_ALWAYS_TRUE(sCurrentContext.init());
sCurrentContext.set(0);
}
GLContext::~GLContext() {
NS_ASSERTION(
IsDestroyed(),
"GLContext implementation must call MarkDestroyed in destructor!");
#ifdef MOZ_GL_DEBUG
if (mSharedContext) {
GLContext* tip = mSharedContext;
while (tip->mSharedContext) tip = tip->mSharedContext;
tip->SharedContextDestroyed(this);
tip->ReportOutstandingNames();
} else {
ReportOutstandingNames();
}
#endif
}
/*static*/
void GLContext::StaticDebugCallback(GLenum source, GLenum type, GLuint id,
GLenum severity, GLsizei length,
const GLchar* message,
const GLvoid* userParam) {
GLContext* gl = (GLContext*)userParam;
gl->DebugCallback(source, type, id, severity, length, message);
}
bool GLContext::Init() {
MOZ_RELEASE_ASSERT(!mSymbols.fBindFramebuffer,
"GFX: GLContext::Init should only be called once.");
ScopedGfxFeatureReporter reporter("GL Context");
if (!InitImpl()) {
// If initialization fails, zero the symbols to avoid hard-to-understand
// bugs.
mSymbols = {};
NS_WARNING("GLContext::InitWithPrefix failed!");
return false;
}
reporter.SetSuccessful();
return true;
}
static bool LoadSymbolsWithDesc(const SymbolLoader& loader,
const SymLoadStruct* list, const char* desc) {
const auto warnOnFailure = bool(desc);
if (loader.LoadSymbols(list, warnOnFailure)) return true;
ClearSymbols(list);
if (desc) {
const nsPrintfCString err("Failed to load symbols for %s.", desc);
NS_ERROR(err.BeginReading());
}
return false;
}
bool GLContext::LoadExtSymbols(const SymbolLoader& loader,
const SymLoadStruct* list, GLExtensions ext) {
const char* extName = sExtensionNames[size_t(ext)];
if (!LoadSymbolsWithDesc(loader, list, extName)) {
MarkExtensionUnsupported(ext);
return false;
}
return true;
};
bool GLContext::LoadFeatureSymbols(const SymbolLoader& loader,
const SymLoadStruct* list,
GLFeature feature) {
const char* featureName = GetFeatureName(feature);
if (!LoadSymbolsWithDesc(loader, list, featureName)) {
MarkUnsupported(feature);
return false;
}
return true;
};
bool GLContext::InitImpl() {
if (!MakeCurrent(true)) return false;
const auto loader = GetSymbolLoader();
if (!loader) return false;
const auto fnLoadSymbols = [&](const SymLoadStruct* const list,
const char* const desc) {
return LoadSymbolsWithDesc(*loader, list, desc);
};
// clang-format off
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fActiveTexture, {{ "glActiveTexture", "glActiveTextureARB" }} },
{ (PRFuncPtr*) &mSymbols.fAttachShader, {{ "glAttachShader", "glAttachShaderARB" }} },
{ (PRFuncPtr*) &mSymbols.fBindAttribLocation, {{ "glBindAttribLocation", "glBindAttribLocationARB" }} },
{ (PRFuncPtr*) &mSymbols.fBindBuffer, {{ "glBindBuffer", "glBindBufferARB" }} },
{ (PRFuncPtr*) &mSymbols.fBindTexture, {{ "glBindTexture", "glBindTextureARB" }} },
{ (PRFuncPtr*) &mSymbols.fBlendColor, {{ "glBlendColor" }} },
{ (PRFuncPtr*) &mSymbols.fBlendEquation, {{ "glBlendEquation" }} },
{ (PRFuncPtr*) &mSymbols.fBlendEquationSeparate, {{ "glBlendEquationSeparate", "glBlendEquationSeparateEXT" }} },
{ (PRFuncPtr*) &mSymbols.fBlendFunc, {{ "glBlendFunc" }} },
{ (PRFuncPtr*) &mSymbols.fBlendFuncSeparate, {{ "glBlendFuncSeparate", "glBlendFuncSeparateEXT" }} },
{ (PRFuncPtr*) &mSymbols.fBufferData, {{ "glBufferData" }} },
{ (PRFuncPtr*) &mSymbols.fBufferSubData, {{ "glBufferSubData" }} },
{ (PRFuncPtr*) &mSymbols.fClear, {{ "glClear" }} },
{ (PRFuncPtr*) &mSymbols.fClearColor, {{ "glClearColor" }} },
{ (PRFuncPtr*) &mSymbols.fClearStencil, {{ "glClearStencil" }} },
{ (PRFuncPtr*) &mSymbols.fColorMask, {{ "glColorMask" }} },
{ (PRFuncPtr*) &mSymbols.fCompressedTexImage2D, {{ "glCompressedTexImage2D" }} },
{ (PRFuncPtr*) &mSymbols.fCompressedTexSubImage2D, {{ "glCompressedTexSubImage2D" }} },
{ (PRFuncPtr*) &mSymbols.fCullFace, {{ "glCullFace" }} },
{ (PRFuncPtr*) &mSymbols.fDetachShader, {{ "glDetachShader", "glDetachShaderARB" }} },
{ (PRFuncPtr*) &mSymbols.fDepthFunc, {{ "glDepthFunc" }} },
{ (PRFuncPtr*) &mSymbols.fDepthMask, {{ "glDepthMask" }} },
{ (PRFuncPtr*) &mSymbols.fDisable, {{ "glDisable" }} },
{ (PRFuncPtr*) &mSymbols.fDisableVertexAttribArray, {{ "glDisableVertexAttribArray", "glDisableVertexAttribArrayARB" }} },
{ (PRFuncPtr*) &mSymbols.fDrawArrays, {{ "glDrawArrays" }} },
{ (PRFuncPtr*) &mSymbols.fDrawElements, {{ "glDrawElements" }} },
{ (PRFuncPtr*) &mSymbols.fEnable, {{ "glEnable" }} },
{ (PRFuncPtr*) &mSymbols.fEnableVertexAttribArray, {{ "glEnableVertexAttribArray", "glEnableVertexAttribArrayARB" }} },
{ (PRFuncPtr*) &mSymbols.fFinish, {{ "glFinish" }} },
{ (PRFuncPtr*) &mSymbols.fFlush, {{ "glFlush" }} },
{ (PRFuncPtr*) &mSymbols.fFrontFace, {{ "glFrontFace" }} },
{ (PRFuncPtr*) &mSymbols.fGetActiveAttrib, {{ "glGetActiveAttrib", "glGetActiveAttribARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetActiveUniform, {{ "glGetActiveUniform", "glGetActiveUniformARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetAttachedShaders, {{ "glGetAttachedShaders", "glGetAttachedShadersARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetAttribLocation, {{ "glGetAttribLocation", "glGetAttribLocationARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetIntegerv, {{ "glGetIntegerv" }} },
{ (PRFuncPtr*) &mSymbols.fGetFloatv, {{ "glGetFloatv" }} },
{ (PRFuncPtr*) &mSymbols.fGetBooleanv, {{ "glGetBooleanv" }} },
{ (PRFuncPtr*) &mSymbols.fGetBufferParameteriv, {{ "glGetBufferParameteriv", "glGetBufferParameterivARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetError, {{ "glGetError" }} },
{ (PRFuncPtr*) &mSymbols.fGetProgramiv, {{ "glGetProgramiv", "glGetProgramivARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetProgramInfoLog, {{ "glGetProgramInfoLog", "glGetProgramInfoLogARB" }} },
{ (PRFuncPtr*) &mSymbols.fTexParameteri, {{ "glTexParameteri" }} },
{ (PRFuncPtr*) &mSymbols.fTexParameteriv, {{ "glTexParameteriv" }} },
{ (PRFuncPtr*) &mSymbols.fTexParameterf, {{ "glTexParameterf" }} },
{ (PRFuncPtr*) &mSymbols.fGetString, {{ "glGetString" }} },
{ (PRFuncPtr*) &mSymbols.fGetTexParameterfv, {{ "glGetTexParameterfv" }} },
{ (PRFuncPtr*) &mSymbols.fGetTexParameteriv, {{ "glGetTexParameteriv" }} },
{ (PRFuncPtr*) &mSymbols.fGetUniformfv, {{ "glGetUniformfv", "glGetUniformfvARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetUniformiv, {{ "glGetUniformiv", "glGetUniformivARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetUniformLocation, {{ "glGetUniformLocation", "glGetUniformLocationARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetVertexAttribfv, {{ "glGetVertexAttribfv", "glGetVertexAttribfvARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetVertexAttribiv, {{ "glGetVertexAttribiv", "glGetVertexAttribivARB" }} },
{ (PRFuncPtr*) &mSymbols.fGetVertexAttribPointerv, {{ "glGetVertexAttribPointerv" }} },
{ (PRFuncPtr*) &mSymbols.fHint, {{ "glHint" }} },
{ (PRFuncPtr*) &mSymbols.fIsBuffer, {{ "glIsBuffer", "glIsBufferARB" }} },
{ (PRFuncPtr*) &mSymbols.fIsEnabled, {{ "glIsEnabled" }} },
{ (PRFuncPtr*) &mSymbols.fIsProgram, {{ "glIsProgram", "glIsProgramARB" }} },
{ (PRFuncPtr*) &mSymbols.fIsShader, {{ "glIsShader", "glIsShaderARB" }} },
{ (PRFuncPtr*) &mSymbols.fIsTexture, {{ "glIsTexture", "glIsTextureARB" }} },
{ (PRFuncPtr*) &mSymbols.fLineWidth, {{ "glLineWidth" }} },
{ (PRFuncPtr*) &mSymbols.fLinkProgram, {{ "glLinkProgram", "glLinkProgramARB" }} },
{ (PRFuncPtr*) &mSymbols.fPixelStorei, {{ "glPixelStorei" }} },
{ (PRFuncPtr*) &mSymbols.fPolygonOffset, {{ "glPolygonOffset" }} },
{ (PRFuncPtr*) &mSymbols.fReadPixels, {{ "glReadPixels" }} },
{ (PRFuncPtr*) &mSymbols.fSampleCoverage, {{ "glSampleCoverage" }} },
{ (PRFuncPtr*) &mSymbols.fScissor, {{ "glScissor" }} },
{ (PRFuncPtr*) &mSymbols.fStencilFunc, {{ "glStencilFunc" }} },
{ (PRFuncPtr*) &mSymbols.fStencilFuncSeparate, {{ "glStencilFuncSeparate", "glStencilFuncSeparateEXT" }} },
{ (PRFuncPtr*) &mSymbols.fStencilMask, {{ "glStencilMask" }} },
{ (PRFuncPtr*) &mSymbols.fStencilMaskSeparate, {{ "glStencilMaskSeparate", "glStencilMaskSeparateEXT" }} },
{ (PRFuncPtr*) &mSymbols.fStencilOp, {{ "glStencilOp" }} },
{ (PRFuncPtr*) &mSymbols.fStencilOpSeparate, {{ "glStencilOpSeparate", "glStencilOpSeparateEXT" }} },
{ (PRFuncPtr*) &mSymbols.fTexImage2D, {{ "glTexImage2D" }} },
{ (PRFuncPtr*) &mSymbols.fTexSubImage2D, {{ "glTexSubImage2D" }} },
{ (PRFuncPtr*) &mSymbols.fUniform1f, {{ "glUniform1f" }} },
{ (PRFuncPtr*) &mSymbols.fUniform1fv, {{ "glUniform1fv" }} },
{ (PRFuncPtr*) &mSymbols.fUniform1i, {{ "glUniform1i" }} },
{ (PRFuncPtr*) &mSymbols.fUniform1iv, {{ "glUniform1iv" }} },
{ (PRFuncPtr*) &mSymbols.fUniform2f, {{ "glUniform2f" }} },
{ (PRFuncPtr*) &mSymbols.fUniform2fv, {{ "glUniform2fv" }} },
{ (PRFuncPtr*) &mSymbols.fUniform2i, {{ "glUniform2i" }} },
{ (PRFuncPtr*) &mSymbols.fUniform2iv, {{ "glUniform2iv" }} },
{ (PRFuncPtr*) &mSymbols.fUniform3f, {{ "glUniform3f" }} },
{ (PRFuncPtr*) &mSymbols.fUniform3fv, {{ "glUniform3fv" }} },
{ (PRFuncPtr*) &mSymbols.fUniform3i, {{ "glUniform3i" }} },
{ (PRFuncPtr*) &mSymbols.fUniform3iv, {{ "glUniform3iv" }} },
{ (PRFuncPtr*) &mSymbols.fUniform4f, {{ "glUniform4f" }} },
{ (PRFuncPtr*) &mSymbols.fUniform4fv, {{ "glUniform4fv" }} },
{ (PRFuncPtr*) &mSymbols.fUniform4i, {{ "glUniform4i" }} },
{ (PRFuncPtr*) &mSymbols.fUniform4iv, {{ "glUniform4iv" }} },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix2fv, {{ "glUniformMatrix2fv" }} },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix3fv, {{ "glUniformMatrix3fv" }} },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix4fv, {{ "glUniformMatrix4fv" }} },
{ (PRFuncPtr*) &mSymbols.fUseProgram, {{ "glUseProgram" }} },
{ (PRFuncPtr*) &mSymbols.fValidateProgram, {{ "glValidateProgram" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttribPointer, {{ "glVertexAttribPointer" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib1f, {{ "glVertexAttrib1f" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib2f, {{ "glVertexAttrib2f" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib3f, {{ "glVertexAttrib3f" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib4f, {{ "glVertexAttrib4f" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib1fv, {{ "glVertexAttrib1fv" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib2fv, {{ "glVertexAttrib2fv" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib3fv, {{ "glVertexAttrib3fv" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttrib4fv, {{ "glVertexAttrib4fv" }} },
{ (PRFuncPtr*) &mSymbols.fViewport, {{ "glViewport" }} },
{ (PRFuncPtr*) &mSymbols.fCompileShader, {{ "glCompileShader" }} },
{ (PRFuncPtr*) &mSymbols.fCopyTexImage2D, {{ "glCopyTexImage2D" }} },
{ (PRFuncPtr*) &mSymbols.fCopyTexSubImage2D, {{ "glCopyTexSubImage2D" }} },
{ (PRFuncPtr*) &mSymbols.fGetShaderiv, {{ "glGetShaderiv" }} },
{ (PRFuncPtr*) &mSymbols.fGetShaderInfoLog, {{ "glGetShaderInfoLog" }} },
{ (PRFuncPtr*) &mSymbols.fGetShaderSource, {{ "glGetShaderSource" }} },
{ (PRFuncPtr*) &mSymbols.fShaderSource, {{ "glShaderSource" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttribPointer, {{ "glVertexAttribPointer" }} },
{ (PRFuncPtr*) &mSymbols.fGenBuffers, {{ "glGenBuffers", "glGenBuffersARB" }} },
{ (PRFuncPtr*) &mSymbols.fGenTextures, {{ "glGenTextures" }} },
{ (PRFuncPtr*) &mSymbols.fCreateProgram, {{ "glCreateProgram", "glCreateProgramARB" }} },
{ (PRFuncPtr*) &mSymbols.fCreateShader, {{ "glCreateShader", "glCreateShaderARB" }} },
{ (PRFuncPtr*) &mSymbols.fDeleteBuffers, {{ "glDeleteBuffers", "glDeleteBuffersARB" }} },
{ (PRFuncPtr*) &mSymbols.fDeleteTextures, {{ "glDeleteTextures", "glDeleteTexturesARB" }} },
{ (PRFuncPtr*) &mSymbols.fDeleteProgram, {{ "glDeleteProgram", "glDeleteProgramARB" }} },
{ (PRFuncPtr*) &mSymbols.fDeleteShader, {{ "glDeleteShader", "glDeleteShaderARB" }} },
END_SYMBOLS
};
// clang-format on
if (!fnLoadSymbols(coreSymbols, "GL")) return false;
{
const SymLoadStruct symbols[] = {
{(PRFuncPtr*)&mSymbols.fGetGraphicsResetStatus,
{{"glGetGraphicsResetStatus", "glGetGraphicsResetStatusARB",
"glGetGraphicsResetStatusKHR", "glGetGraphicsResetStatusEXT"}}},
END_SYMBOLS};
(void)fnLoadSymbols(symbols, nullptr);
auto err = fGetError();
if (err == LOCAL_GL_CONTEXT_LOST) {
MOZ_ASSERT(mSymbols.fGetGraphicsResetStatus);
const auto status = fGetGraphicsResetStatus();
if (status) {
printf_stderr("Unflushed glGetGraphicsResetStatus: 0x%04x\n", status);
}
err = fGetError();
MOZ_ASSERT(!err);
}
if (err) {
MOZ_ASSERT(false);
return false;
}
}
////////////////
const std::string versionStr = (const char*)fGetString(LOCAL_GL_VERSION);
if (versionStr.find("OpenGL ES") == 0) {
mProfile = ContextProfile::OpenGLES;
}
uint32_t majorVer, minorVer;
if (!ParseVersion(versionStr, &majorVer, &minorVer)) {
MOZ_ASSERT(false, "Failed to parse GL_VERSION");
return false;
}
MOZ_ASSERT(majorVer < 10);
MOZ_ASSERT(minorVer < 10);
mVersion = majorVer * 100 + minorVer * 10;
if (mVersion < 200) return false;
////
const auto glslVersionStr =
(const char*)fGetString(LOCAL_GL_SHADING_LANGUAGE_VERSION);
if (!glslVersionStr) {
// This happens on the Android emulators. We'll just return 100
mShadingLanguageVersion = 100;
} else if (ParseVersion(glslVersionStr, &majorVer, &minorVer)) {
MOZ_ASSERT(majorVer < 10);
MOZ_ASSERT(minorVer < 100);
mShadingLanguageVersion = majorVer * 100 + minorVer;
} else {
MOZ_ASSERT(false, "Failed to parse GL_SHADING_LANGUAGE_VERSION");
return false;
}
if (ShouldSpew()) {
printf_stderr("GL version detected: %u\n", mVersion);
printf_stderr("GLSL version detected: %u\n", mShadingLanguageVersion);
printf_stderr("OpenGL vendor: %s\n", fGetString(LOCAL_GL_VENDOR));
printf_stderr("OpenGL renderer: %s\n", fGetString(LOCAL_GL_RENDERER));
}
////////////////
// Load OpenGL ES 2.0 symbols, or desktop if we aren't using ES 2.
if (mProfile == ContextProfile::OpenGLES) {
const SymLoadStruct symbols[] = {CORE_SYMBOL(GetShaderPrecisionFormat),
CORE_SYMBOL(ClearDepthf),
CORE_SYMBOL(DepthRangef), END_SYMBOLS};
if (!fnLoadSymbols(symbols, "OpenGL ES")) return false;
} else {
const SymLoadStruct symbols[] = {
CORE_SYMBOL(ClearDepth), CORE_SYMBOL(DepthRange),
CORE_SYMBOL(ReadBuffer), CORE_SYMBOL(MapBuffer),
CORE_SYMBOL(UnmapBuffer), CORE_SYMBOL(PointParameterf),
CORE_SYMBOL(DrawBuffer),
// The following functions are only used by Skia/GL in desktop mode.
// Other parts of Gecko should avoid using these
CORE_SYMBOL(DrawBuffers), CORE_SYMBOL(ClientActiveTexture),
CORE_SYMBOL(DisableClientState), CORE_SYMBOL(EnableClientState),
CORE_SYMBOL(LoadIdentity), CORE_SYMBOL(LoadMatrixf),
CORE_SYMBOL(MatrixMode), CORE_SYMBOL(PolygonMode), CORE_SYMBOL(TexGeni),
CORE_SYMBOL(TexGenf), CORE_SYMBOL(TexGenfv), CORE_SYMBOL(VertexPointer),
END_SYMBOLS};
if (!fnLoadSymbols(symbols, "Desktop OpenGL")) return false;
}
////////////////
const char* glVendorString = (const char*)fGetString(LOCAL_GL_VENDOR);
const char* glRendererString = (const char*)fGetString(LOCAL_GL_RENDERER);
if (!glVendorString || !glRendererString) return false;
// The order of these strings must match up with the order of the enum
// defined in GLContext.h for vendor IDs.
const char* vendorMatchStrings[size_t(GLVendor::Other) + 1] = {
"Intel", "NVIDIA", "ATI", "Qualcomm", "Imagination",
"nouveau", "Vivante", "VMware, Inc.", "ARM", "Unknown"};
mVendor = GLVendor::Other;
for (size_t i = 0; i < size_t(GLVendor::Other); ++i) {
if (DoesStringMatch(glVendorString, vendorMatchStrings[i])) {
mVendor = GLVendor(i);
break;
}
}
// The order of these strings must match up with the order of the enum
// defined in GLContext.h for renderer IDs.
const char* rendererMatchStrings[size_t(GLRenderer::Other) + 1] = {
"Adreno 200",
"Adreno 205",
"Adreno (TM) 200",
"Adreno (TM) 205",
"Adreno (TM) 305",
"Adreno (TM) 320",
"Adreno (TM) 330",
"Adreno (TM) 420",
"Mali-400 MP",
"Mali-450 MP",
"PowerVR SGX 530",
"PowerVR SGX 540",
"PowerVR SGX 544MP",
"NVIDIA Tegra",
"Android Emulator",
"Gallium 0.4 on llvmpipe",
"Intel HD Graphics 3000 OpenGL Engine",
"Microsoft Basic Render Driver",
"Unknown"};
mRenderer = GLRenderer::Other;
for (size_t i = 0; i < size_t(GLRenderer::Other); ++i) {
if (DoesStringMatch(glRendererString, rendererMatchStrings[i])) {
mRenderer = GLRenderer(i);
break;
}
}
if (ShouldSpew()) {
printf_stderr("GL_VENDOR: %s\n", glVendorString);
printf_stderr("mVendor: %s\n", vendorMatchStrings[size_t(mVendor)]);
printf_stderr("GL_RENDERER: %s\n", glRendererString);
printf_stderr("mRenderer: %s\n", rendererMatchStrings[size_t(mRenderer)]);
}
////////////////
if (mVersion >= 300) { // Both GL3 and ES3.
const SymLoadStruct symbols[] = {
{(PRFuncPtr*)&mSymbols.fGetStringi, {{"glGetStringi"}}}, END_SYMBOLS};
if (!fnLoadSymbols(symbols, "GetStringi")) {
MOZ_RELEASE_ASSERT(false, "GFX: GetStringi is required!");
return false;
}
}
InitExtensions();
if (mProfile != ContextProfile::OpenGLES) {
if (mVersion >= 310 && !IsExtensionSupported(ARB_compatibility)) {
mProfile = ContextProfile::OpenGLCore;
} else {
mProfile = ContextProfile::OpenGLCompatibility;
}
}
MOZ_ASSERT(mProfile != ContextProfile::Unknown);
if (ShouldSpew()) {
const char* profileStr = "";
if (mProfile == ContextProfile::OpenGLES) {
profileStr = " es";
} else if (mProfile == ContextProfile::OpenGLCore) {
profileStr = " core";
}
printf_stderr("Detected profile: %u%s\n", mVersion, profileStr);
}
InitFeatures();
////
// Disable extensions with partial or incorrect support.
if (WorkAroundDriverBugs()) {
if (Renderer() == GLRenderer::AdrenoTM320) {
MarkUnsupported(GLFeature::standard_derivatives);
}
if (Vendor() == GLVendor::Vivante) {
// bug 958256
MarkUnsupported(GLFeature::standard_derivatives);
}
if (Renderer() == GLRenderer::MicrosoftBasicRenderDriver) {
// Bug 978966: on Microsoft's "Basic Render Driver" (software renderer)
// multisampling hardcodes blending with the default blendfunc, which
// breaks WebGL.
MarkUnsupported(GLFeature::framebuffer_multisample);
}
#ifdef XP_MACOSX
// The Mac Nvidia driver, for versions up to and including 10.8,
// don't seem to properly support this. See 814839
// this has been fixed in Mac OS X 10.9. See 907946
// and it also works in 10.8.3 and higher. See 1094338.
if (Vendor() == gl::GLVendor::NVIDIA &&
!nsCocoaFeatures::IsAtLeastVersion(10, 8, 3)) {
MarkUnsupported(GLFeature::depth_texture);
}
#endif
const auto versionStr = (const char*)fGetString(LOCAL_GL_VERSION);
if (strstr(versionStr, "Mesa")) {
// DrawElementsInstanced hangs the driver.
MarkUnsupported(GLFeature::robust_buffer_access_behavior);
}
}
if (IsExtensionSupported(GLContext::ARB_pixel_buffer_object)) {
MOZ_ASSERT(
(mSymbols.fMapBuffer && mSymbols.fUnmapBuffer),
"ARB_pixel_buffer_object supported without glMapBuffer/UnmapBuffer"
" being available!");
}
////////////////////////////////////////////////////////////////////////////
const auto fnLoadForFeature = [&](const SymLoadStruct* list,
GLFeature feature) {
return this->LoadFeatureSymbols(*loader, list, feature);
};
// Check for ARB_framebuffer_objects
if (IsSupported(GLFeature::framebuffer_object)) {
// https://www.opengl.org/registry/specs/ARB/framebuffer_object.txt
const SymLoadStruct symbols[] = {
CORE_SYMBOL(IsRenderbuffer),
CORE_SYMBOL(BindRenderbuffer),
CORE_SYMBOL(DeleteRenderbuffers),
CORE_SYMBOL(GenRenderbuffers),
CORE_SYMBOL(RenderbufferStorage),
CORE_SYMBOL(RenderbufferStorageMultisample),
CORE_SYMBOL(GetRenderbufferParameteriv),
CORE_SYMBOL(IsFramebuffer),
CORE_SYMBOL(BindFramebuffer),
CORE_SYMBOL(DeleteFramebuffers),
CORE_SYMBOL(GenFramebuffers),
CORE_SYMBOL(CheckFramebufferStatus),
CORE_SYMBOL(FramebufferTexture2D),
CORE_SYMBOL(FramebufferTextureLayer),
CORE_SYMBOL(FramebufferRenderbuffer),
CORE_SYMBOL(GetFramebufferAttachmentParameteriv),
CORE_SYMBOL(BlitFramebuffer),
CORE_SYMBOL(GenerateMipmap),
END_SYMBOLS};
fnLoadForFeature(symbols, GLFeature::framebuffer_object);
}
if (!IsSupported(GLFeature::framebuffer_object)) {
// Check for aux symbols based on extensions
if (IsSupported(GLFeature::framebuffer_object_EXT_OES)) {
const SymLoadStruct symbols[] = {
CORE_EXT_SYMBOL2(IsRenderbuffer, EXT, OES),
CORE_EXT_SYMBOL2(BindRenderbuffer, EXT, OES),
CORE_EXT_SYMBOL2(DeleteRenderbuffers, EXT, OES),
CORE_EXT_SYMBOL2(GenRenderbuffers, EXT, OES),
CORE_EXT_SYMBOL2(RenderbufferStorage, EXT, OES),
CORE_EXT_SYMBOL2(GetRenderbufferParameteriv, EXT, OES),
CORE_EXT_SYMBOL2(IsFramebuffer, EXT, OES),
CORE_EXT_SYMBOL2(BindFramebuffer, EXT, OES),
CORE_EXT_SYMBOL2(DeleteFramebuffers, EXT, OES),
CORE_EXT_SYMBOL2(GenFramebuffers, EXT, OES),
CORE_EXT_SYMBOL2(CheckFramebufferStatus, EXT, OES),
CORE_EXT_SYMBOL2(FramebufferTexture2D, EXT, OES),
CORE_EXT_SYMBOL2(FramebufferRenderbuffer, EXT, OES),
CORE_EXT_SYMBOL2(GetFramebufferAttachmentParameteriv, EXT, OES),
CORE_EXT_SYMBOL2(GenerateMipmap, EXT, OES),
END_SYMBOLS};
fnLoadForFeature(symbols, GLFeature::framebuffer_object_EXT_OES);
}
if (IsSupported(GLFeature::framebuffer_blit)) {
const SymLoadStruct symbols[] = {
EXT_SYMBOL3(BlitFramebuffer, ANGLE, EXT, NV), END_SYMBOLS};
fnLoadForFeature(symbols, GLFeature::framebuffer_blit);
}
if (IsSupported(GLFeature::framebuffer_multisample)) {
const SymLoadStruct symbols[] = {
EXT_SYMBOL3(RenderbufferStorageMultisample, ANGLE, APPLE, EXT),
END_SYMBOLS};
fnLoadForFeature(symbols, GLFeature::framebuffer_multisample);
}
if (IsExtensionSupported(GLContext::ARB_geometry_shader4) ||
IsExtensionSupported(GLContext::NV_geometry_program4)) {
const SymLoadStruct symbols[] = {
EXT_SYMBOL2(FramebufferTextureLayer, ARB, EXT), END_SYMBOLS};
if (!fnLoadSymbols(symbols,
"ARB_geometry_shader4/NV_geometry_program4")) {
MarkExtensionUnsupported(GLContext::ARB_geometry_shader4);
MarkExtensionUnsupported(GLContext::NV_geometry_program4);
}
}
}
if (!IsSupported(GLFeature::framebuffer_object) &&
!IsSupported(GLFeature::framebuffer_object_EXT_OES)) {
NS_ERROR("GLContext requires support for framebuffer objects.");
return false;
}
MOZ_RELEASE_ASSERT(mSymbols.fBindFramebuffer,
"GFX: mSymbols.fBindFramebuffer zero or not set.");
////////////////
const auto err = fGetError();
MOZ_RELEASE_ASSERT(!IsBadCallError(err));
if (err) return false;
LoadMoreSymbols(*loader);
////////////////////////////////////////////////////////////////////////////
raw_fGetIntegerv(LOCAL_GL_VIEWPORT, mViewportRect);
raw_fGetIntegerv(LOCAL_GL_SCISSOR_BOX, mScissorRect);
raw_fGetIntegerv(LOCAL_GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
raw_fGetIntegerv(LOCAL_GL_MAX_CUBE_MAP_TEXTURE_SIZE, &mMaxCubeMapTextureSize);
raw_fGetIntegerv(LOCAL_GL_MAX_RENDERBUFFER_SIZE, &mMaxRenderbufferSize);
raw_fGetIntegerv(LOCAL_GL_MAX_VIEWPORT_DIMS, mMaxViewportDims);
if (mWorkAroundDriverBugs) {
int maxTexSize = INT32_MAX;
int maxCubeSize = INT32_MAX;
#ifdef XP_MACOSX
if (!nsCocoaFeatures::IsAtLeastVersion(10, 12)) {
if (mVendor == GLVendor::Intel) {
// see bug 737182 for 2D textures, bug 684882 for cube map textures.
maxTexSize = 4096;
maxCubeSize = 512;
} else if (mVendor == GLVendor::NVIDIA) {
// See bug 879656. 8192 fails, 8191 works.
maxTexSize = 8191;
}
} else {
// https://bugzilla.mozilla.org/show_bug.cgi?id=1544446
// Mojave exposes 16k textures, but gives FRAMEBUFFER_UNSUPPORTED for any
// 16k*16k FB except rgba8 without depth/stencil.
// The max supported sizes changes based on involved formats.
// (RGBA32F more restrictive than RGBA16F)
maxTexSize = 8192;
}
#endif
#ifdef MOZ_X11
if (mVendor == GLVendor::Nouveau) {
// see bug 814716. Clamp MaxCubeMapTextureSize at 2K for Nouveau.
maxCubeSize = 2048;
} else if (mVendor == GLVendor::Intel) {
// Bug 1199923. Driver seems to report a larger max size than
// actually supported.
maxTexSize = mMaxTextureSize / 2;
}
// Bug 1367570. Explicitly set vertex attributes [1,3] to opaque
// black because Nvidia doesn't do it for us.
if (mVendor == GLVendor::NVIDIA) {
for (size_t i = 1; i <= 3; ++i) {
mSymbols.fVertexAttrib4f(i, 0, 0, 0, 1);
}
}
#endif
if (Renderer() == GLRenderer::AdrenoTM420) {
// see bug 1194923. Calling glFlush before glDeleteFramebuffers
// prevents occasional driver crash.
mNeedsFlushBeforeDeleteFB = true;
}
#ifdef MOZ_WIDGET_ANDROID
if ((Renderer() == GLRenderer::AdrenoTM305 ||
Renderer() == GLRenderer::AdrenoTM320 ||
Renderer() == GLRenderer::AdrenoTM330) &&
jni::GetAPIVersion() < 21) {
// Bug 1164027. Driver crashes when functions such as
// glTexImage2D fail due to virtual memory exhaustion.
mTextureAllocCrashesOnMapFailure = true;
}
#endif
#if MOZ_WIDGET_ANDROID
if (Renderer() == GLRenderer::SGX540 && jni::GetAPIVersion() <= 15) {
// Bug 1288446. Driver sometimes crashes when uploading data to a
// texture if the render target has changed since the texture was
// rendered from. Calling glCheckFramebufferStatus after
// glFramebufferTexture2D prevents the crash.
mNeedsCheckAfterAttachTextureToFb = true;
}
#endif
// -
const auto fnLimit = [&](int* const driver, const int limit) {
if (*driver > limit) {
*driver = limit;
mNeedsTextureSizeChecks = true;
}
};
fnLimit(&mMaxTextureSize, maxTexSize);
fnLimit(&mMaxRenderbufferSize, maxTexSize);
maxCubeSize = std::min(maxCubeSize, maxTexSize);
fnLimit(&mMaxCubeMapTextureSize, maxCubeSize);
}
if (IsSupported(GLFeature::framebuffer_multisample)) {
fGetIntegerv(LOCAL_GL_MAX_SAMPLES, (GLint*)&mMaxSamples);
}
mMaxTexOrRbSize = std::min(mMaxTextureSize, mMaxRenderbufferSize);
////////////////////////////////////////////////////////////////////////////
// We're ready for final setup.
fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0);
// TODO: Remove SurfaceCaps::any.
if (mCaps.any) {
mCaps.any = false;
mCaps.color = true;
mCaps.alpha = false;
}
MOZ_GL_ASSERT(this, IsCurrent());
if (ShouldSpew() && IsExtensionSupported(KHR_debug)) {
fEnable(LOCAL_GL_DEBUG_OUTPUT);
fDisable(LOCAL_GL_DEBUG_OUTPUT_SYNCHRONOUS);
fDebugMessageCallback(&StaticDebugCallback, (void*)this);
fDebugMessageControl(LOCAL_GL_DONT_CARE, LOCAL_GL_DONT_CARE,
LOCAL_GL_DONT_CARE, 0, nullptr, true);
}
return true;
}
void GLContext::LoadMoreSymbols(const SymbolLoader& loader) {
const auto fnLoadForExt = [&](const SymLoadStruct* list, GLExtensions ext) {
return this->LoadExtSymbols(loader, list, ext);
};
const auto fnLoadForFeature = [&](const SymLoadStruct* list,
GLFeature feature) {
return this->LoadFeatureSymbols(loader, list, feature);
};
const auto fnLoadFeatureByCore = [&](const SymLoadStruct* coreList,
const SymLoadStruct* extList,
GLFeature feature) {
const bool useCore = this->IsFeatureProvidedByCoreSymbols(feature);
const auto list = useCore ? coreList : extList;
return fnLoadForFeature(list, feature);
};
if (IsSupported(GLFeature::robustness)) {
const auto resetStrategy =
GetIntAs<GLuint>(LOCAL_GL_RESET_NOTIFICATION_STRATEGY);
if (resetStrategy != LOCAL_GL_LOSE_CONTEXT_ON_RESET) {
NS_WARNING(
"Robustness supported, strategy is not LOSE_CONTEXT_ON_RESET!");
if (ShouldSpew()) {
const bool isDisabled =
(resetStrategy == LOCAL_GL_NO_RESET_NOTIFICATION);
printf_stderr("Strategy: %s (0x%04x)",
(isDisabled ? "disabled" : "unrecognized"),
resetStrategy);
}
MarkUnsupported(GLFeature::robustness);
}
}
if (IsSupported(GLFeature::sync)) {
const SymLoadStruct symbols[] = {
CORE_SYMBOL(FenceSync), CORE_SYMBOL(IsSync),
CORE_SYMBOL(DeleteSync), CORE_SYMBOL(ClientWaitSync),
CORE_SYMBOL(WaitSync), CORE_SYMBOL(GetInteger64v),
CORE_SYMBOL(GetSynciv), END_SYMBOLS};
fnLoadForFeature(symbols, GLFeature::sync);
}
if (IsExtensionSupported(OES_EGL_image)) {
const SymLoadStruct symbols[] = {
{(PRFuncPtr*)&mSymbols.fEGLImageTargetTexture2D,
{{"glEGLImageTargetTexture2DOES"}}},
{(PRFuncPtr*)&mSymbols.fEGLImageTargetRenderbufferStorage,
{{"glEGLImageTargetRenderbufferStorageOES"}}},
END_SYMBOLS};
fnLoadForExt(symbols, OES_EGL_image);
}
if (IsExtensionSupported(APPLE_texture_range)) {
const SymLoadStruct symbols[] = {CORE_SYMBOL(TextureRangeAPPLE),
END_SYMBOLS};
fnLoadForExt(symbols, APPLE_texture_range);
}
if (IsExtensionSupported(APPLE_fence)) {
const SymLoadStruct symbols[] = {CORE_SYMBOL(FinishObjectAPPLE),
CORE_SYMBOL(TestObjectAPPLE), END_SYMBOLS};
fnLoadForExt(symbols, APPLE_fence);
}
// clang-format off
if (IsSupported(GLFeature::vertex_array_object)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fIsVertexArray, {{ "glIsVertexArray" }} },
{ (PRFuncPtr*) &mSymbols.fGenVertexArrays, {{ "glGenVertexArrays" }} },
{ (PRFuncPtr*) &mSymbols.fBindVertexArray, {{ "glBindVertexArray" }} },
{ (PRFuncPtr*) &mSymbols.fDeleteVertexArrays, {{ "glDeleteVertexArrays" }} },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fIsVertexArray, {{ "glIsVertexArrayARB", "glIsVertexArrayOES", "glIsVertexArrayAPPLE" }} },
{ (PRFuncPtr*) &mSymbols.fGenVertexArrays, {{ "glGenVertexArraysARB", "glGenVertexArraysOES", "glGenVertexArraysAPPLE" }} },
{ (PRFuncPtr*) &mSymbols.fBindVertexArray, {{ "glBindVertexArrayARB", "glBindVertexArrayOES", "glBindVertexArrayAPPLE" }} },
{ (PRFuncPtr*) &mSymbols.fDeleteVertexArrays, {{ "glDeleteVertexArraysARB", "glDeleteVertexArraysOES", "glDeleteVertexArraysAPPLE" }} },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::vertex_array_object);
}
if (IsSupported(GLFeature::draw_instanced)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fDrawArraysInstanced, {{ "glDrawArraysInstanced" }} },
{ (PRFuncPtr*) &mSymbols.fDrawElementsInstanced, {{ "glDrawElementsInstanced" }} },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fDrawArraysInstanced, {{ "glDrawArraysInstancedARB", "glDrawArraysInstancedEXT", "glDrawArraysInstancedNV", "glDrawArraysInstancedANGLE" }} },
{ (PRFuncPtr*) &mSymbols.fDrawElementsInstanced, {{ "glDrawElementsInstancedARB", "glDrawElementsInstancedEXT", "glDrawElementsInstancedNV", "glDrawElementsInstancedANGLE" }}
},
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::draw_instanced);
}
if (IsSupported(GLFeature::instanced_arrays)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fVertexAttribDivisor, {{ "glVertexAttribDivisor" }} },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fVertexAttribDivisor, {{ "glVertexAttribDivisorARB", "glVertexAttribDivisorNV", "glVertexAttribDivisorANGLE" }} },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::instanced_arrays);
}
if (IsSupported(GLFeature::texture_storage)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fTexStorage2D, {{ "glTexStorage2D" }} },
{ (PRFuncPtr*) &mSymbols.fTexStorage3D, {{ "glTexStorage3D" }} },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fTexStorage2D, {{ "glTexStorage2DEXT" }} },
{ (PRFuncPtr*) &mSymbols.fTexStorage3D, {{ "glTexStorage3DEXT" }} },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_storage);
}
if (IsSupported(GLFeature::sampler_objects)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fGenSamplers, {{ "glGenSamplers" }} },
{ (PRFuncPtr*) &mSymbols.fDeleteSamplers, {{ "glDeleteSamplers" }} },
{ (PRFuncPtr*) &mSymbols.fIsSampler, {{ "glIsSampler" }} },
{ (PRFuncPtr*) &mSymbols.fBindSampler, {{ "glBindSampler" }} },
{ (PRFuncPtr*) &mSymbols.fSamplerParameteri, {{ "glSamplerParameteri" }} },
{ (PRFuncPtr*) &mSymbols.fSamplerParameteriv, {{ "glSamplerParameteriv" }} },
{ (PRFuncPtr*) &mSymbols.fSamplerParameterf, {{ "glSamplerParameterf" }} },
{ (PRFuncPtr*) &mSymbols.fSamplerParameterfv, {{ "glSamplerParameterfv" }} },
{ (PRFuncPtr*) &mSymbols.fGetSamplerParameteriv, {{ "glGetSamplerParameteriv" }} },
{ (PRFuncPtr*) &mSymbols.fGetSamplerParameterfv, {{ "glGetSamplerParameterfv" }} },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::sampler_objects);
}
// ARB_transform_feedback2/NV_transform_feedback2 is a
// superset of EXT_transform_feedback/NV_transform_feedback
// and adds glPauseTransformFeedback &
// glResumeTransformFeedback, which are required for WebGL2.
if (IsSupported(GLFeature::transform_feedback2)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fBindBufferBase, {{ "glBindBufferBase" }} },
{ (PRFuncPtr*) &mSymbols.fBindBufferRange, {{ "glBindBufferRange" }} },
{ (PRFuncPtr*) &mSymbols.fGenTransformFeedbacks, {{ "glGenTransformFeedbacks" }} },
{ (PRFuncPtr*) &mSymbols.fBindTransformFeedback, {{ "glBindTransformFeedback" }} },
{ (PRFuncPtr*) &mSymbols.fDeleteTransformFeedbacks, {{ "glDeleteTransformFeedbacks" }} },
{ (PRFuncPtr*) &mSymbols.fIsTransformFeedback, {{ "glIsTransformFeedback" }} },
{ (PRFuncPtr*) &mSymbols.fBeginTransformFeedback, {{ "glBeginTransformFeedback" }} },
{ (PRFuncPtr*) &mSymbols.fEndTransformFeedback, {{ "glEndTransformFeedback" }} },
{ (PRFuncPtr*) &mSymbols.fTransformFeedbackVaryings, {{ "glTransformFeedbackVaryings" }} },
{ (PRFuncPtr*) &mSymbols.fGetTransformFeedbackVarying, {{ "glGetTransformFeedbackVarying" }} },
{ (PRFuncPtr*) &mSymbols.fPauseTransformFeedback, {{ "glPauseTransformFeedback" }} },
{ (PRFuncPtr*) &mSymbols.fResumeTransformFeedback, {{ "glResumeTransformFeedback" }} },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fBindBufferBase, {{ "glBindBufferBaseEXT", "glBindBufferBaseNV" }} },
{ (PRFuncPtr*) &mSymbols.fBindBufferRange, {{ "glBindBufferRangeEXT", "glBindBufferRangeNV" }} },
{ (PRFuncPtr*) &mSymbols.fGenTransformFeedbacks, {{ "glGenTransformFeedbacksNV" }} },
{ (PRFuncPtr*) &mSymbols.fBindTransformFeedback, {{ "glBindTransformFeedbackNV" }} },
{ (PRFuncPtr*) &mSymbols.fDeleteTransformFeedbacks, {{ "glDeleteTransformFeedbacksNV" }} },
{ (PRFuncPtr*) &mSymbols.fIsTransformFeedback, {{ "glIsTransformFeedbackNV" }} },
{ (PRFuncPtr*) &mSymbols.fBeginTransformFeedback, {{ "glBeginTransformFeedbackEXT", "glBeginTransformFeedbackNV" }} },
{ (PRFuncPtr*) &mSymbols.fEndTransformFeedback, {{ "glEndTransformFeedbackEXT", "glEndTransformFeedbackNV" }} },
{ (PRFuncPtr*) &mSymbols.fTransformFeedbackVaryings, {{ "glTransformFeedbackVaryingsEXT", "glTransformFeedbackVaryingsNV" }} },
{ (PRFuncPtr*) &mSymbols.fGetTransformFeedbackVarying, {{ "glGetTransformFeedbackVaryingEXT", "glGetTransformFeedbackVaryingNV" }} },
{ (PRFuncPtr*) &mSymbols.fPauseTransformFeedback, {{ "glPauseTransformFeedbackNV" }} },
{ (PRFuncPtr*) &mSymbols.fResumeTransformFeedback, {{ "glResumeTransformFeedbackNV" }} },
END_SYMBOLS
};
if (!fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_storage)) {
// Also mark bind_buffer_offset as unsupported.
MarkUnsupported(GLFeature::bind_buffer_offset);
}
}
if (IsSupported(GLFeature::bind_buffer_offset)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fBindBufferOffset, {{ "glBindBufferOffset" }} },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fBindBufferOffset,
{{ "glBindBufferOffsetEXT", "glBindBufferOffsetNV" }}
},
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::bind_buffer_offset);
}
if (IsSupported(GLFeature::query_counter)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fQueryCounter, {{ "glQueryCounter" }} },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fQueryCounter, {{ "glQueryCounterEXT", "glQueryCounterANGLE" }} },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::query_counter);
}
if (IsSupported(GLFeature::query_objects)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fBeginQuery, {{ "glBeginQuery" }} },
{ (PRFuncPtr*) &mSymbols.fGenQueries, {{ "glGenQueries" }} },
{ (PRFuncPtr*) &mSymbols.fDeleteQueries, {{ "glDeleteQueries" }} },
{ (PRFuncPtr*) &mSymbols.fEndQuery, {{ "glEndQuery" }} },
{ (PRFuncPtr*) &mSymbols.fGetQueryiv, {{ "glGetQueryiv" }} },
{ (PRFuncPtr*) &mSymbols.fGetQueryObjectuiv, {{ "glGetQueryObjectuiv" }} },
{ (PRFuncPtr*) &mSymbols.fIsQuery, {{ "glIsQuery" }} },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fBeginQuery, {{ "glBeginQueryEXT", "glBeginQueryANGLE" }} },
{ (PRFuncPtr*) &mSymbols.fGenQueries, {{ "glGenQueriesEXT", "glGenQueriesANGLE" }} },
{ (PRFuncPtr*) &mSymbols.fDeleteQueries, {{ "glDeleteQueriesEXT", "glDeleteQueriesANGLE" }} },
{ (PRFuncPtr*) &mSymbols.fEndQuery, {{ "glEndQueryEXT", "glEndQueryANGLE" }} },
{ (PRFuncPtr*) &mSymbols.fGetQueryiv, {{ "glGetQueryivEXT", "glGetQueryivANGLE" }} },
{ (PRFuncPtr*) &mSymbols.fGetQueryObjectuiv, {{ "glGetQueryObjectuivEXT", "glGetQueryObjectuivANGLE" }} },
{ (PRFuncPtr*) &mSymbols.fIsQuery, {{ "glIsQueryEXT", "glIsQueryANGLE" }} },
END_SYMBOLS
};
if (!fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::query_objects)) {
MarkUnsupported(GLFeature::get_query_object_i64v);
MarkUnsupported(GLFeature::get_query_object_iv);
MarkUnsupported(GLFeature::occlusion_query);
MarkUnsupported(GLFeature::occlusion_query_boolean);
MarkUnsupported(GLFeature::occlusion_query2);
}
}
if (IsSupported(GLFeature::get_query_object_i64v)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetQueryObjecti64v, {{ "glGetQueryObjecti64v" }} },
{ (PRFuncPtr*) &mSymbols.fGetQueryObjectui64v, {{ "glGetQueryObjectui64v" }} },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetQueryObjecti64v, {{ "glGetQueryObjecti64vEXT", "glGetQueryObjecti64vANGLE" }} },
{ (PRFuncPtr*) &mSymbols.fGetQueryObjectui64v, {{ "glGetQueryObjectui64vEXT", "glGetQueryObjectui64vANGLE" }} },
END_SYMBOLS
};
if (!fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::get_query_object_i64v)) {
MarkUnsupported(GLFeature::query_counter);
}
}
if (IsSupported(GLFeature::get_query_object_iv)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetQueryObjectiv, {{ "glGetQueryObjectiv" }} },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetQueryObjectiv, {{ "glGetQueryObjectivEXT", "glGetQueryObjectivANGLE" }} },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::get_query_object_iv);
}
if (IsSupported(GLFeature::clear_buffers)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fClearBufferfi, {{ "glClearBufferfi", }} },
{ (PRFuncPtr*) &mSymbols.fClearBufferfv, {{ "glClearBufferfv", }} },
{ (PRFuncPtr*) &mSymbols.fClearBufferiv, {{ "glClearBufferiv", }} },
{ (PRFuncPtr*) &mSymbols.fClearBufferuiv, {{ "glClearBufferuiv" }} },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::clear_buffers);
}
if (IsSupported(GLFeature::copy_buffer)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fCopyBufferSubData, {{ "glCopyBufferSubData" }} },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::copy_buffer);
}
if (IsSupported(GLFeature::draw_buffers)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fDrawBuffers, {{ "glDrawBuffers" }} },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fDrawBuffers, {{ "glDrawBuffersARB", "glDrawBuffersEXT" }} },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::draw_buffers);
}
if (IsSupported(GLFeature::get_integer_indexed)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetIntegeri_v, {{ "glGetIntegeri_v" }} },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] ={
{ (PRFuncPtr*) &mSymbols.fGetIntegeri_v, {{ "glGetIntegerIndexedvEXT" }} },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::get_integer_indexed);
}
if (IsSupported(GLFeature::get_integer64_indexed)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetInteger64i_v, {{ "glGetInteger64i_v" }} },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::get_integer64_indexed);
}
if (IsSupported(GLFeature::gpu_shader4)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetVertexAttribIiv, {{ "glGetVertexAttribIiv", "glGetVertexAttribIivEXT" }} },
{ (PRFuncPtr*) &mSymbols.fGetVertexAttribIuiv, {{ "glGetVertexAttribIuiv", "glGetVertexAttribIuivEXT" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttribI4i, {{ "glVertexAttribI4i", "glVertexAttribI4iEXT" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttribI4iv, {{ "glVertexAttribI4iv", "glVertexAttribI4ivEXT" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttribI4ui, {{ "glVertexAttribI4ui", "glVertexAttribI4uiEXT" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttribI4uiv, {{ "glVertexAttribI4uiv", "glVertexAttribI4uivEXT" }} },
{ (PRFuncPtr*) &mSymbols.fVertexAttribIPointer, {{ "glVertexAttribIPointer", "glVertexAttribIPointerEXT" }} },
{ (PRFuncPtr*) &mSymbols.fUniform1ui, {{ "glUniform1ui", "glUniform1uiEXT" }} },
{ (PRFuncPtr*) &mSymbols.fUniform2ui, {{ "glUniform2ui", "glUniform2uiEXT" }} },
{ (PRFuncPtr*) &mSymbols.fUniform3ui, {{ "glUniform3ui", "glUniform3uiEXT" }} },
{ (PRFuncPtr*) &mSymbols.fUniform4ui, {{ "glUniform4ui", "glUniform4uiEXT" }} },
{ (PRFuncPtr*) &mSymbols.fUniform1uiv, {{ "glUniform1uiv", "glUniform1uivEXT" }} },
{ (PRFuncPtr*) &mSymbols.fUniform2uiv, {{ "glUniform2uiv", "glUniform2uivEXT" }} },
{ (PRFuncPtr*) &mSymbols.fUniform3uiv, {{ "glUniform3uiv", "glUniform3uivEXT" }} },
{ (PRFuncPtr*) &mSymbols.fUniform4uiv, {{ "glUniform4uiv", "glUniform4uivEXT" }} },
{ (PRFuncPtr*) &mSymbols.fGetFragDataLocation, {{ "glGetFragDataLocation", "glGetFragDataLocationEXT" }} },
{ (PRFuncPtr*) &mSymbols.fGetUniformuiv, {{ "glGetUniformuiv", "glGetUniformuivEXT" }} },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::gpu_shader4);
}
if (IsSupported(GLFeature::map_buffer_range)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fMapBufferRange, {{ "glMapBufferRange" }} },
{ (PRFuncPtr*) &mSymbols.fFlushMappedBufferRange, {{ "glFlushMappedBufferRange" }} },
{ (PRFuncPtr*) &mSymbols.fUnmapBuffer, {{ "glUnmapBuffer" }} },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::map_buffer_range);
}
if (IsSupported(GLFeature::texture_3D)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fTexImage3D, {{ "glTexImage3D" }} },
{ (PRFuncPtr*) &mSymbols.fTexSubImage3D, {{ "glTexSubImage3D" }} },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fTexSubImage3D, {{ "glTexSubImage3DEXT", "glTexSubImage3DOES" }} },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_3D);
}
if (IsSupported(GLFeature::texture_3D_compressed)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fCompressedTexImage3D, {{ "glCompressedTexImage3D" }} },
{ (PRFuncPtr*) &mSymbols.fCompressedTexSubImage3D, {{ "glCompressedTexSubImage3D" }} },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fCompressedTexImage3D, {{ "glCompressedTexImage3DARB", "glCompressedTexImage3DOES" }} },
{ (PRFuncPtr*) &mSymbols.fCompressedTexSubImage3D, {{ "glCompressedTexSubImage3DARB", "glCompressedTexSubImage3DOES" }} },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_3D_compressed);
}
if (IsSupported(GLFeature::texture_3D_copy)) {
const SymLoadStruct coreSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fCopyTexSubImage3D, {{ "glCopyTexSubImage3D" }} },
END_SYMBOLS
};
const SymLoadStruct extSymbols[] = {
{ (PRFuncPtr*) &mSymbols.fCopyTexSubImage3D, {{ "glCopyTexSubImage3DEXT", "glCopyTexSubImage3DOES" }} },
END_SYMBOLS
};
fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::texture_3D_copy);
}
if (IsSupported(GLFeature::uniform_buffer_object)) {
// Note: Don't query for glGetActiveUniformName because it is not
// supported by GL ES 3.
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fGetUniformIndices, {{ "glGetUniformIndices" }} },
{ (PRFuncPtr*) &mSymbols.fGetActiveUniformsiv, {{ "glGetActiveUniformsiv" }} },
{ (PRFuncPtr*) &mSymbols.fGetUniformBlockIndex, {{ "glGetUniformBlockIndex" }} },
{ (PRFuncPtr*) &mSymbols.fGetActiveUniformBlockiv, {{ "glGetActiveUniformBlockiv" }} },
{ (PRFuncPtr*) &mSymbols.fGetActiveUniformBlockName, {{ "glGetActiveUniformBlockName" }} },
{ (PRFuncPtr*) &mSymbols.fUniformBlockBinding, {{ "glUniformBlockBinding" }} },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::uniform_buffer_object);
}
if (IsSupported(GLFeature::uniform_matrix_nonsquare)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fUniformMatrix2x3fv, {{ "glUniformMatrix2x3fv" }} },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix2x4fv, {{ "glUniformMatrix2x4fv" }} },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix3x2fv, {{ "glUniformMatrix3x2fv" }} },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix3x4fv, {{ "glUniformMatrix3x4fv" }} },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix4x2fv, {{ "glUniformMatrix4x2fv" }} },
{ (PRFuncPtr*) &mSymbols.fUniformMatrix4x3fv, {{ "glUniformMatrix4x3fv" }} },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::uniform_matrix_nonsquare);
}
if (IsSupported(GLFeature::internalformat_query)) {
const SymLoadStruct symbols[] = {
CORE_SYMBOL(GetInternalformativ),
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::internalformat_query);
}
if (IsSupported(GLFeature::invalidate_framebuffer)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fInvalidateFramebuffer, {{ "glInvalidateFramebuffer" }} },
{ (PRFuncPtr*) &mSymbols.fInvalidateSubFramebuffer, {{ "glInvalidateSubFramebuffer" }} },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::invalidate_framebuffer);
}
if (IsSupported(GLFeature::multiview)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fFramebufferTextureMultiview, {{
"glFramebufferTextureMultiviewOVR",
"glFramebufferTextureMultiviewLayeredANGLE"
}} },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::multiview);
}
if (IsSupported(GLFeature::prim_restart)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fPrimitiveRestartIndex, {{ "glPrimitiveRestartIndex", "glPrimitiveRestartIndexNV" }} },
END_SYMBOLS
};
fnLoadForFeature(symbols, GLFeature::prim_restart);
}
if (IsExtensionSupported(KHR_debug)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fDebugMessageControl, {{ "glDebugMessageControl", "glDebugMessageControlKHR", }} },
{ (PRFuncPtr*) &mSymbols.fDebugMessageInsert, {{ "glDebugMessageInsert", "glDebugMessageInsertKHR", }} },
{ (PRFuncPtr*) &mSymbols.fDebugMessageCallback, {{ "glDebugMessageCallback", "glDebugMessageCallbackKHR" }} },
{ (PRFuncPtr*) &mSymbols.fGetDebugMessageLog, {{ "glGetDebugMessageLog", "glGetDebugMessageLogKHR", }} },
{ (PRFuncPtr*) &mSymbols.fGetPointerv, {{ "glGetPointerv", "glGetPointervKHR", }} },
{ (PRFuncPtr*) &mSymbols.fPushDebugGroup, {{ "glPushDebugGroup", "glPushDebugGroupKHR", }} },
{ (PRFuncPtr*) &mSymbols.fPopDebugGroup, {{ "glPopDebugGroup", "glPopDebugGroupKHR", }} },
{ (PRFuncPtr*) &mSymbols.fObjectLabel, {{ "glObjectLabel", "glObjectLabelKHR", }} },
{ (PRFuncPtr*) &mSymbols.fGetObjectLabel, {{ "glGetObjectLabel", "glGetObjectLabelKHR", }} },
{ (PRFuncPtr*) &mSymbols.fObjectPtrLabel, {{ "glObjectPtrLabel", "glObjectPtrLabelKHR", }} },
{ (PRFuncPtr*) &mSymbols.fGetObjectPtrLabel, {{ "glGetObjectPtrLabel", "glGetObjectPtrLabelKHR", }} },
END_SYMBOLS
};
fnLoadForExt(symbols, KHR_debug);
}
if (IsExtensionSupported(NV_fence)) {
const SymLoadStruct symbols[] = {
{ (PRFuncPtr*) &mSymbols.fGenFences, {{ "glGenFencesNV" }} },
{ (PRFuncPtr*) &mSymbols.fDeleteFences, {{ "glDeleteFencesNV" }} },
{ (PRFuncPtr*) &mSymbols.fSetFence, {{ "glSetFenceNV" }} },
{ (PRFuncPtr*) &mSymbols.fTestFence, {{ "glTestFenceNV" }} },
{ (PRFuncPtr*) &mSymbols.fFinishFence, {{ "glFinishFenceNV" }} },
{ (PRFuncPtr*) &mSymbols.fIsFence, {{ "glIsFenceNV" }} },
{ (PRFuncPtr*) &mSymbols.fGetFenceiv, {{ "glGetFenceivNV" }} },
END_SYMBOLS
};
fnLoadForExt(symbols, NV_fence);
}
// clang-format on
if (IsExtensionSupported(NV_texture_barrier)) {
const SymLoadStruct symbols[] = {
{(PRFuncPtr*)&mSymbols.fTextureBarrier, {{"glTextureBarrierNV"}}},
END_SYMBOLS};
fnLoadForExt(symbols, NV_texture_barrier);
}
if (IsSupported(GLFeature::read_buffer)) {
const SymLoadStruct symbols[] = {CORE_SYMBOL(ReadBuffer), END_SYMBOLS};
fnLoadForFeature(symbols, GLFeature::read_buffer);
}
if (IsExtensionSupported(APPLE_framebuffer_multisample)) {
const SymLoadStruct symbols[] = {
CORE_SYMBOL(ResolveMultisampleFramebufferAPPLE), END_SYMBOLS};
fnLoadForExt(symbols, APPLE_framebuffer_multisample);
}
// Load developer symbols, don't fail if we can't find them.
const SymLoadStruct devSymbols[] = {CORE_SYMBOL(GetTexImage),
CORE_SYMBOL(GetTexLevelParameteriv),
END_SYMBOLS};
const bool warnOnFailures = ShouldSpew();
(void)loader.LoadSymbols(devSymbols, warnOnFailures);
}
#undef CORE_SYMBOL
#undef CORE_EXT_SYMBOL2
#undef EXT_SYMBOL2
#undef EXT_SYMBOL3
#undef END_SYMBOLS
void GLContext::DebugCallback(GLenum source, GLenum type, GLuint id,
GLenum severity, GLsizei length,
const GLchar* message) {
nsAutoCString sourceStr;
switch (source) {
case LOCAL_GL_DEBUG_SOURCE_API:
sourceStr = NS_LITERAL_CSTRING("SOURCE_API");
break;
case LOCAL_GL_DEBUG_SOURCE_WINDOW_SYSTEM:
sourceStr = NS_LITERAL_CSTRING("SOURCE_WINDOW_SYSTEM");
break;
case LOCAL_GL_DEBUG_SOURCE_SHADER_COMPILER:
sourceStr = NS_LITERAL_CSTRING("SOURCE_SHADER_COMPILER");
break;
case LOCAL_GL_DEBUG_SOURCE_THIRD_PARTY:
sourceStr = NS_LITERAL_CSTRING("SOURCE_THIRD_PARTY");
break;
case LOCAL_GL_DEBUG_SOURCE_APPLICATION:
sourceStr = NS_LITERAL_CSTRING("SOURCE_APPLICATION");
break;
case LOCAL_GL_DEBUG_SOURCE_OTHER:
sourceStr = NS_LITERAL_CSTRING("SOURCE_OTHER");
break;
default:
sourceStr = nsPrintfCString("<source 0x%04x>", source);
break;
}
nsAutoCString typeStr;
switch (type) {
case LOCAL_GL_DEBUG_TYPE_ERROR:
typeStr = NS_LITERAL_CSTRING("TYPE_ERROR");
break;
case LOCAL_GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR:
typeStr = NS_LITERAL_CSTRING("TYPE_DEPRECATED_BEHAVIOR");
break;
case LOCAL_GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR:
typeStr = NS_LITERAL_CSTRING("TYPE_UNDEFINED_BEHAVIOR");
break;
case LOCAL_GL_DEBUG_TYPE_PORTABILITY:
typeStr = NS_LITERAL_CSTRING("TYPE_PORTABILITY");
break;
case LOCAL_GL_DEBUG_TYPE_PERFORMANCE:
typeStr = NS_LITERAL_CSTRING("TYPE_PERFORMANCE");
break;
case LOCAL_GL_DEBUG_TYPE_OTHER:
typeStr = NS_LITERAL_CSTRING("TYPE_OTHER");
break;
case LOCAL_GL_DEBUG_TYPE_MARKER:
typeStr = NS_LITERAL_CSTRING("TYPE_MARKER");
break;
default:
typeStr = nsPrintfCString("<type 0x%04x>", type);
break;
}
nsAutoCString sevStr;
switch (severity) {
case LOCAL_GL_DEBUG_SEVERITY_HIGH:
sevStr = NS_LITERAL_CSTRING("SEVERITY_HIGH");
break;
case LOCAL_GL_DEBUG_SEVERITY_MEDIUM:
sevStr = NS_LITERAL_CSTRING("SEVERITY_MEDIUM");
break;
case LOCAL_GL_DEBUG_SEVERITY_LOW:
sevStr = NS_LITERAL_CSTRING("SEVERITY_LOW");
break;
case LOCAL_GL_DEBUG_SEVERITY_NOTIFICATION:
sevStr = NS_LITERAL_CSTRING("SEVERITY_NOTIFICATION");
break;
default:
sevStr = nsPrintfCString("<severity 0x%04x>", severity);
break;
}
printf_stderr("[KHR_debug: 0x%" PRIxPTR "] ID %u: %s, %s, %s:\n %s\n",
(uintptr_t)this, id, sourceStr.BeginReading(),
typeStr.BeginReading(), sevStr.BeginReading(), message);
}
void GLContext::InitExtensions() {
MOZ_GL_ASSERT(this, IsCurrent());
std::vector<nsCString> driverExtensionList;
[&]() {
if (mSymbols.fGetStringi) {
GLuint count = 0;
if (GetPotentialInteger(LOCAL_GL_NUM_EXTENSIONS, (GLint*)&count)) {
for (GLuint i = 0; i < count; i++) {
// This is UTF-8.
const char* rawExt = (const char*)fGetStringi(LOCAL_GL_EXTENSIONS, i);
// We CANNOT use nsDependentCString here, because the spec doesn't
// guarantee that the pointers returned are different, only that their
// contents are. On Flame, each of these index string queries returns
// the same address.
driverExtensionList.push_back(nsCString(rawExt));
}
return;
}
}
const char* rawExts = (const char*)fGetString(LOCAL_GL_EXTENSIONS);
if (rawExts) {
nsDependentCString exts(rawExts);
SplitByChar(exts, ' ', &driverExtensionList);
}
}();
const auto err = fGetError();
MOZ_ALWAYS_TRUE(!IsBadCallError(err));
const bool shouldDumpExts = ShouldDumpExts();
if (shouldDumpExts) {
printf_stderr("%i GL driver extensions: (*: recognized)\n",
(uint32_t)driverExtensionList.size());
}
MarkBitfieldByStrings(driverExtensionList, shouldDumpExts, sExtensionNames,
&mAvailableExtensions);
if (WorkAroundDriverBugs()) {
if (Vendor() == GLVendor::Qualcomm) {
// Some Adreno drivers do not report GL_OES_EGL_sync, but they really do
// support it.
MarkExtensionSupported(OES_EGL_sync);
}
if (Vendor() == GLVendor::ATI) {
// ATI drivers say this extension exists, but we can't
// actually find the EGLImageTargetRenderbufferStorageOES
// extension function pointer in the drivers.
MarkExtensionUnsupported(OES_EGL_image);
}
if (Vendor() == GLVendor::Imagination && Renderer() == GLRenderer::SGX540) {
// Bug 980048
MarkExtensionUnsupported(OES_EGL_sync);
}
#ifdef MOZ_WIDGET_ANDROID
if (Vendor() == GLVendor::Imagination &&
Renderer() == GLRenderer::SGX544MP && jni::GetAPIVersion() < 21) {
// Bug 1026404
MarkExtensionUnsupported(OES_EGL_image);
MarkExtensionUnsupported(OES_EGL_image_external);
}
#endif
if (Vendor() == GLVendor::ARM && (Renderer() == GLRenderer::Mali400MP ||
Renderer() == GLRenderer::Mali450MP)) {
// Bug 1264505
MarkExtensionUnsupported(OES_EGL_image_external);
}
if (Renderer() == GLRenderer::AndroidEmulator) {
// the Android emulator, which we use to run B2G reftests on,
// doesn't expose the OES_rgb8_rgba8 extension, but it seems to
// support it (tautologically, as it only runs on desktop GL).
MarkExtensionSupported(OES_rgb8_rgba8);
}
if (Vendor() == GLVendor::VMware &&
Renderer() == GLRenderer::GalliumLlvmpipe) {
// The llvmpipe driver that is used on linux try servers appears to have
// buggy support for s3tc/dxt1 compressed textures.
// See Bug 975824.
MarkExtensionUnsupported(EXT_texture_compression_s3tc);
MarkExtensionUnsupported(EXT_texture_compression_dxt1);
MarkExtensionUnsupported(ANGLE_texture_compression_dxt3);
MarkExtensionUnsupported(ANGLE_texture_compression_dxt5);
}
#ifdef XP_MACOSX
// Bug 1009642: On OSX Mavericks (10.9), the driver for Intel HD
// 3000 appears to be buggy WRT updating sub-images of S3TC
// textures with glCompressedTexSubImage2D. Works on Intel HD 4000
// and Intel HD 5000/Iris that I tested.
// Bug 1124996: Appears to be the same on OSX Yosemite (10.10)
if (Renderer() == GLRenderer::IntelHD3000) {
MarkExtensionUnsupported(EXT_texture_compression_s3tc);
}
// OSX supports EXT_texture_sRGB in Legacy contexts, but not in Core
// contexts. Though EXT_texture_sRGB was included into GL2.1, it *excludes*
// the interactions with s3tc. Strictly speaking, you must advertize support
// for EXT_texture_sRGB in order to allow for srgb+s3tc on desktop GL. The
// omission of EXT_texture_sRGB in OSX Core contexts appears to be a bug.
MarkExtensionSupported(EXT_texture_sRGB);
#endif
}
if (shouldDumpExts) {
printf_stderr("\nActivated extensions:\n");
for (size_t i = 0; i < mAvailableExtensions.size(); i++) {
if (!mAvailableExtensions[i]) continue;
const char* ext = sExtensionNames[i];
printf_stderr("[%i] %s\n", (uint32_t)i, ext);
}
}
}
void GLContext::PlatformStartup() {
RegisterStrongMemoryReporter(new GfxTexturesReporter());
}
// Common code for checking for both GL extensions and GLX extensions.
bool GLContext::ListHasExtension(const GLubyte* extensions,
const char* extension) {
// fix bug 612572 - we were crashing as we were calling this function with
// extensions==null
if (extensions == nullptr || extension == nullptr) return false;
const GLubyte* start;
GLubyte* where;
GLubyte* terminator;
/* Extension names should not have spaces. */
where = (GLubyte*)strchr(extension, ' ');
if (where || *extension == '\0') return false;
/*
* It takes a bit of care to be fool-proof about parsing the
* OpenGL extensions string. Don't be fooled by sub-strings,
* etc.
*/
start = extensions;
for (;;) {
where = (GLubyte*)strstr((const char*)start, extension);
if (!where) {
break;
}
terminator = where + strlen(extension);
if (where == start || *(where - 1) == ' ') {
if (*terminator == ' ' || *terminator == '\0') {
return true;
}
}
start = terminator;
}
return false;
}
GLFormats GLContext::ChooseGLFormats(const SurfaceCaps& caps) const {
GLFormats formats;
// If we're on ES2 hardware and we have an explicit request for 16 bits of
// color or less OR we don't support full 8-bit color, return a 4444 or 565
// format.
bool bpp16 = caps.bpp16;
if (IsGLES()) {
if (!IsExtensionSupported(OES_rgb8_rgba8)) bpp16 = true;
} else {
// RGB565 is uncommon on desktop, requiring ARB_ES2_compatibility.
// Since it's also vanishingly useless there, let's not support it.
bpp16 = false;
}
if (bpp16) {
MOZ_ASSERT(IsGLES());
if (caps.alpha) {
formats.color_texInternalFormat = LOCAL_GL_RGBA;
formats.color_texFormat = LOCAL_GL_RGBA;
formats.color_texType = LOCAL_GL_UNSIGNED_SHORT_4_4_4_4;
formats.color_rbFormat = LOCAL_GL_RGBA4;
} else {
formats.color_texInternalFormat = LOCAL_GL_RGB;
formats.color_texFormat = LOCAL_GL_RGB;
formats.color_texType = LOCAL_GL_UNSIGNED_SHORT_5_6_5;
formats.color_rbFormat = LOCAL_GL_RGB565;
}
} else {
formats.color_texType = LOCAL_GL_UNSIGNED_BYTE;
if (caps.alpha) {
formats.color_texInternalFormat =
IsGLES() ? LOCAL_GL_RGBA : LOCAL_GL_RGBA8;
formats.color_texFormat = LOCAL_GL_RGBA;
formats.color_rbFormat = LOCAL_GL_RGBA8;
} else {
formats.color_texInternalFormat = IsGLES() ? LOCAL_GL_RGB : LOCAL_GL_RGB8;
formats.color_texFormat = LOCAL_GL_RGB;
formats.color_rbFormat = LOCAL_GL_RGB8;
}
}
// Be clear that these are 0 if unavailable.
formats.depthStencil = 0;
if (IsSupported(GLFeature::packed_depth_stencil)) {
formats.depthStencil = LOCAL_GL_DEPTH24_STENCIL8;
}
formats.depth = 0;
if (IsGLES()) {
if (IsExtensionSupported(OES_depth24)) {
formats.depth = LOCAL_GL_DEPTH_COMPONENT24;
} else {
formats.depth = LOCAL_GL_DEPTH_COMPONENT16;
}
} else {
formats.depth = LOCAL_GL_DEPTH_COMPONENT24;
}
formats.stencil = LOCAL_GL_STENCIL_INDEX8;
return formats;
}
bool GLContext::IsFramebufferComplete(GLuint fb, GLenum* pStatus) {
MOZ_ASSERT(fb);
ScopedBindFramebuffer autoFB(this, fb);
MOZ_GL_ASSERT(this, fIsFramebuffer(fb));
GLenum status = fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
if (pStatus) *pStatus = status;
return status == LOCAL_GL_FRAMEBUFFER_COMPLETE;
}
void GLContext::AttachBuffersToFB(GLuint colorTex, GLuint colorRB,
GLuint depthRB, GLuint stencilRB, GLuint fb,
GLenum target) {
MOZ_ASSERT(fb);
MOZ_ASSERT(!(colorTex && colorRB));
ScopedBindFramebuffer autoFB(this, fb);
MOZ_GL_ASSERT(this, fIsFramebuffer(fb)); // It only counts after being bound.
if (colorTex) {
MOZ_GL_ASSERT(this, fIsTexture(colorTex));
MOZ_ASSERT(target == LOCAL_GL_TEXTURE_2D ||
target == LOCAL_GL_TEXTURE_RECTANGLE_ARB);
fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
target, colorTex, 0);
} else if (colorRB) {
// On the Android 4.3 emulator, IsRenderbuffer may return false incorrectly.
MOZ_GL_ASSERT(this, fIsRenderbuffer(colorRB) ||
Renderer() == GLRenderer::AndroidEmulator);
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
LOCAL_GL_RENDERBUFFER, colorRB);
}
if (depthRB) {
MOZ_GL_ASSERT(this, fIsRenderbuffer(depthRB) ||
Renderer() == GLRenderer::AndroidEmulator);
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_DEPTH_ATTACHMENT,
LOCAL_GL_RENDERBUFFER, depthRB);
}
if (stencilRB) {
MOZ_GL_ASSERT(this, fIsRenderbuffer(stencilRB) ||
Renderer() == GLRenderer::AndroidEmulator);
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_STENCIL_ATTACHMENT,
LOCAL_GL_RENDERBUFFER, stencilRB);
}
}
bool GLContext::AssembleOffscreenFBs(const GLuint colorMSRB,
const GLuint depthRB,
const GLuint stencilRB,
const GLuint texture, GLuint* drawFB_out,
GLuint* readFB_out) {
if (!colorMSRB && !texture) {
MOZ_ASSERT(!depthRB && !stencilRB);
if (drawFB_out) *drawFB_out = 0;
if (readFB_out) *readFB_out = 0;
return true;
}
ScopedBindFramebuffer autoFB(this);
GLuint drawFB = 0;
GLuint readFB = 0;
if (texture) {
readFB = 0;
fGenFramebuffers(1, &readFB);
BindFB(readFB);
fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
LOCAL_GL_TEXTURE_2D, texture, 0);
}
if (colorMSRB) {
drawFB = 0;
fGenFramebuffers(1, &drawFB);
BindFB(drawFB);
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
LOCAL_GL_RENDERBUFFER, colorMSRB);
} else {
drawFB = readFB;
}
MOZ_ASSERT(GetFB() == drawFB);
if (depthRB) {
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_DEPTH_ATTACHMENT,
LOCAL_GL_RENDERBUFFER, depthRB);
}
if (stencilRB) {
fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_STENCIL_ATTACHMENT,
LOCAL_GL_RENDERBUFFER, stencilRB);
}
// We should be all resized. Check for framebuffer completeness.
GLenum status;
bool isComplete = true;
if (!IsFramebufferComplete(drawFB, &status)) {
NS_WARNING("DrawFBO: Incomplete");
#ifdef MOZ_GL_DEBUG
if (ShouldSpew()) {
printf_stderr("Framebuffer status: %X\n", status);
}
#endif
isComplete = false;
}
if (!IsFramebufferComplete(readFB, &status)) {
NS_WARNING("ReadFBO: Incomplete");
#ifdef MOZ_GL_DEBUG
if (ShouldSpew()) {
printf_stderr("Framebuffer status: %X\n", status);
}
#endif
isComplete = false;
}
if (drawFB_out) {
*drawFB_out = drawFB;
} else if (drawFB) {
MOZ_CRASH("drawFB created when not requested!");
}
if (readFB_out) {
*readFB_out = readFB;
} else if (readFB) {
MOZ_CRASH("readFB created when not requested!");
}
return isComplete;
}
void GLContext::MarkDestroyed() {
if (IsDestroyed()) return;
OnMarkDestroyed();
// Null these before they're naturally nulled after dtor, as we want GLContext
// to still be alive in *their* dtors.
mScreen = nullptr;
mBlitHelper = nullptr;
mReadTexImageHelper = nullptr;
mContextLost = true;
mSymbols = {};
}
// -
#ifdef MOZ_GL_DEBUG
/* static */
void GLContext::AssertNotPassingStackBufferToTheGL(const void* ptr) {
int somethingOnTheStack;
const void* someStackPtr = &somethingOnTheStack;
const int page_bits = 12;
intptr_t page = reinterpret_cast<uintptr_t>(ptr) >> page_bits;
intptr_t someStackPage =
reinterpret_cast<uintptr_t>(someStackPtr) >> page_bits;
uintptr_t pageDistance = std::abs(page - someStackPage);
// Explanation for the "distance <= 1" check here as opposed to just
// an equality check.
//
// Here we assume that pages immediately adjacent to the someStackAddress
// page, are also stack pages. That allows to catch the case where the calling
// frame put a buffer on the stack, and we just crossed the page boundary.
// That is likely to happen, precisely, when using stack arrays. I hit that
// specifically with CompositorOGL::Initialize.
//
// In theory we could be unlucky and wrongly assert here. If that happens,
// it will only affect debug builds, and looking at stacks we'll be able to
// see that this assert is wrong and revert to the conservative and safe
// approach of only asserting when address and someStackAddress are
// on the same page.
bool isStackAddress = pageDistance <= 1;
MOZ_ASSERT(!isStackAddress,
"Please don't pass stack arrays to the GL. "
"Consider using HeapCopyOfStackArray. "
"See bug 1005658.");
}
void GLContext::CreatedProgram(GLContext* aOrigin, GLuint aName) {
mTrackedPrograms.AppendElement(NamedResource(aOrigin, aName));
}
void GLContext::CreatedShader(GLContext* aOrigin, GLuint aName) {
mTrackedShaders.AppendElement(NamedResource(aOrigin, aName));
}
void GLContext::CreatedBuffers(GLContext* aOrigin, GLsizei aCount,
GLuint* aNames) {
for (GLsizei i = 0; i < aCount; ++i) {
mTrackedBuffers.AppendElement(NamedResource(aOrigin, aNames[i]));
}
}
void GLContext::CreatedQueries(GLContext* aOrigin, GLsizei aCount,
GLuint* aNames) {
for (GLsizei i = 0; i < aCount; ++i) {
mTrackedQueries.AppendElement(NamedResource(aOrigin, aNames[i]));
}
}
void GLContext::CreatedTextures(GLContext* aOrigin, GLsizei aCount,
GLuint* aNames) {
for (GLsizei i = 0; i < aCount; ++i) {
mTrackedTextures.AppendElement(NamedResource(aOrigin, aNames[i]));
}
}
void GLContext::CreatedFramebuffers(GLContext* aOrigin, GLsizei aCount,
GLuint* aNames) {
for (GLsizei i = 0; i < aCount; ++i) {
mTrackedFramebuffers.AppendElement(NamedResource(aOrigin, aNames[i]));
}
}
void GLContext::CreatedRenderbuffers(GLContext* aOrigin, GLsizei aCount,
GLuint* aNames) {
for (GLsizei i = 0; i < aCount; ++i) {
mTrackedRenderbuffers.AppendElement(NamedResource(aOrigin, aNames[i]));
}
}
static void RemoveNamesFromArray(GLContext* aOrigin, GLsizei aCount,
const GLuint* aNames,
nsTArray<GLContext::NamedResource>& aArray) {
for (GLsizei j = 0; j < aCount; ++j) {
GLuint name = aNames[j];
// name 0 can be ignored
if (name == 0) continue;
for (uint32_t i = 0; i < aArray.Length(); ++i) {
if (aArray[i].name == name) {
aArray.RemoveElementAt(i);
break;
}
}
}
}
void GLContext::DeletedProgram(GLContext* aOrigin, GLuint aName) {
RemoveNamesFromArray(aOrigin, 1, &aName, mTrackedPrograms);
}
void GLContext::DeletedShader(GLContext* aOrigin, GLuint aName) {
RemoveNamesFromArray(aOrigin, 1, &aName, mTrackedShaders);
}
void GLContext::DeletedBuffers(GLContext* aOrigin, GLsizei aCount,
const GLuint* aNames) {
RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedBuffers);
}
void GLContext::DeletedQueries(GLContext* aOrigin, GLsizei aCount,
const GLuint* aNames) {
RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedQueries);
}
void GLContext::DeletedTextures(GLContext* aOrigin, GLsizei aCount,
const GLuint* aNames) {
RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedTextures);
}
void GLContext::DeletedFramebuffers(GLContext* aOrigin, GLsizei aCount,
const GLuint* aNames) {
RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedFramebuffers);
}
void GLContext::DeletedRenderbuffers(GLContext* aOrigin, GLsizei aCount,
const GLuint* aNames) {
RemoveNamesFromArray(aOrigin, aCount, aNames, mTrackedRenderbuffers);
}
static void MarkContextDestroyedInArray(
GLContext* aContext, nsTArray<GLContext::NamedResource>& aArray) {
for (uint32_t i = 0; i < aArray.Length(); ++i) {
if (aArray[i].origin == aContext) aArray[i].originDeleted = true;
}
}
void GLContext::SharedContextDestroyed(GLContext* aChild) {
MarkContextDestroyedInArray(aChild, mTrackedPrograms);
MarkContextDestroyedInArray(aChild, mTrackedShaders);
MarkContextDestroyedInArray(aChild, mTrackedTextures);
MarkContextDestroyedInArray(aChild, mTrackedFramebuffers);
MarkContextDestroyedInArray(aChild, mTrackedRenderbuffers);
MarkContextDestroyedInArray(aChild, mTrackedBuffers);
MarkContextDestroyedInArray(aChild, mTrackedQueries);
}
static void ReportArrayContents(
const char* title, const nsTArray<GLContext::NamedResource>& aArray) {
if (aArray.Length() == 0) return;
printf_stderr("%s:\n", title);
nsTArray<GLContext::NamedResource> copy(aArray);
copy.Sort();
GLContext* lastContext = nullptr;
for (uint32_t i = 0; i < copy.Length(); ++i) {
if (lastContext != copy[i].origin) {
if (lastContext) printf_stderr("\n");
printf_stderr(" [%p - %s] ", copy[i].origin,
copy[i].originDeleted ? "deleted" : "live");
lastContext = copy[i].origin;
}
printf_stderr("%d ", copy[i].name);
}
printf_stderr("\n");
}
void GLContext::ReportOutstandingNames() {
if (!ShouldSpew()) return;
printf_stderr("== GLContext %p Outstanding ==\n", this);
ReportArrayContents("Outstanding Textures", mTrackedTextures);
ReportArrayContents("Outstanding Buffers", mTrackedBuffers);
ReportArrayContents("Outstanding Queries", mTrackedQueries);
ReportArrayContents("Outstanding Programs", mTrackedPrograms);
ReportArrayContents("Outstanding Shaders", mTrackedShaders);
ReportArrayContents("Outstanding Framebuffers", mTrackedFramebuffers);
ReportArrayContents("Outstanding Renderbuffers", mTrackedRenderbuffers);
}
#endif /* DEBUG */
void GLContext::GuaranteeResolve() {
if (mScreen) {
mScreen->AssureBlitted();
}
fFinish();
}
const gfx::IntSize& GLContext::OffscreenSize() const {
MOZ_ASSERT(IsOffscreen());
return mScreen->Size();
}
bool GLContext::CreateScreenBufferImpl(const IntSize& size,
const SurfaceCaps& caps) {
UniquePtr<GLScreenBuffer> newScreen =
GLScreenBuffer::Create(this, size, caps);
if (!newScreen) return false;
if (!newScreen->Resize(size)) {
return false;
}
// This will rebind to 0 (Screen) if needed when
// it falls out of scope.
ScopedBindFramebuffer autoFB(this);
mScreen = std::move(newScreen);
return true;
}
bool GLContext::ResizeScreenBuffer(const IntSize& size) {
if (!IsOffscreenSizeAllowed(size)) return false;
return mScreen->Resize(size);
}
void GLContext::ForceDirtyScreen() {
ScopedBindFramebuffer autoFB(0);
BeforeGLDrawCall();
// no-op; just pretend we did something
AfterGLDrawCall();
}
void GLContext::CleanDirtyScreen() {
ScopedBindFramebuffer autoFB(0);
BeforeGLReadCall();
// no-op; we just want to make sure the Read FBO is updated if it needs to be
AfterGLReadCall();
}
bool GLContext::IsOffscreenSizeAllowed(const IntSize& aSize) const {
int32_t biggerDimension = std::max(aSize.width, aSize.height);
int32_t maxAllowed = std::min(mMaxRenderbufferSize, mMaxTextureSize);
return biggerDimension <= maxAllowed;
}
bool GLContext::IsOwningThreadCurrent() {
return PlatformThread::CurrentId() == mOwningThreadId;
}
GLBlitHelper* GLContext::BlitHelper() {
if (!mBlitHelper) {
mBlitHelper.reset(new GLBlitHelper(this));
}
return mBlitHelper.get();
}
GLReadTexImageHelper* GLContext::ReadTexImageHelper() {
if (!mReadTexImageHelper) {
mReadTexImageHelper = MakeUnique<GLReadTexImageHelper>(this);
}
return mReadTexImageHelper.get();
}
void GLContext::FlushIfHeavyGLCallsSinceLastFlush() {
if (!mHeavyGLCallsSinceLastFlush) {
return;
}
if (MakeCurrent()) {
fFlush();
}
}
/*static*/
bool GLContext::ShouldDumpExts() { return gfxEnv::GlDumpExtensions(); }
bool DoesStringMatch(const char* aString, const char* aWantedString) {
if (!aString || !aWantedString) return false;
const char* occurrence = strstr(aString, aWantedString);
// aWanted not found
if (!occurrence) return false;
// aWantedString preceded by alpha character
if (occurrence != aString && isalpha(*(occurrence - 1))) return false;
// aWantedVendor followed by alpha character
const char* afterOccurrence = occurrence + strlen(aWantedString);
if (isalpha(*afterOccurrence)) return false;
return true;
}
/*static*/
bool GLContext::ShouldSpew() { return gfxEnv::GlSpew(); }
void SplitByChar(const nsACString& str, const char delim,
std::vector<nsCString>* const out) {
uint32_t start = 0;
while (true) {
int32_t end = str.FindChar(' ', start);
if (end == -1) break;
uint32_t len = (uint32_t)end - start;
nsDependentCSubstring substr(str, start, len);
out->push_back(nsCString(substr));
start = end + 1;
}
nsDependentCSubstring substr(str, start);
out->push_back(nsCString(substr));
}
bool GLContext::Readback(SharedSurface* src, gfx::DataSourceSurface* dest) {
MOZ_ASSERT(src && dest);
MOZ_ASSERT(dest->GetSize() == src->mSize);
if (!MakeCurrent()) {
return false;
}
SharedSurface* prev = GetLockedSurface();
const bool needsSwap = src != prev;
if (needsSwap) {
if (prev) prev->UnlockProd();
src->LockProd();
}
GLuint tempFB = 0;
GLuint tempTex = 0;
{
ScopedBindFramebuffer autoFB(this);
// We're consuming from the producer side, so which do we use?
// Really, we just want a read-only lock, so ConsumerAcquire is the best
// match.
src->ProducerReadAcquire();
if (src->mAttachType == AttachmentType::Screen) {
fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0);
} else {
fGenFramebuffers(1, &tempFB);
fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, tempFB);
switch (src->mAttachType) {
case AttachmentType::GLTexture:
fFramebufferTexture2D(
LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
src->ProdTextureTarget(), src->ProdTexture(), 0);
break;
case AttachmentType::GLRenderbuffer:
fFramebufferRenderbuffer(
LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
LOCAL_GL_RENDERBUFFER, src->ProdRenderbuffer());
break;
default:
MOZ_CRASH("GFX: bad `src->mAttachType`.");
}
DebugOnly<GLenum> status = fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
MOZ_GL_ASSERT(this, status == LOCAL_GL_FRAMEBUFFER_COMPLETE);
}
if (src->NeedsIndirectReads()) {
fGenTextures(1, &tempTex);
{
ScopedBindTexture autoTex(this, tempTex);
GLenum format = src->mHasAlpha ? LOCAL_GL_RGBA : LOCAL_GL_RGB;
auto width = src->mSize.width;
auto height = src->mSize.height;
fCopyTexImage2D(LOCAL_GL_TEXTURE_2D, 0, format, 0, 0, width, height, 0);
}
fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
LOCAL_GL_TEXTURE_2D, tempTex, 0);
}
ReadPixelsIntoDataSurface(this, dest);
src->ProducerReadRelease();
}
if (tempFB) fDeleteFramebuffers(1, &tempFB);
if (tempTex) {
fDeleteTextures(1, &tempTex);
}
if (needsSwap) {
src->UnlockProd();
if (prev) prev->LockProd();
}
return true;
}
// Do whatever tear-down is necessary after drawing to our offscreen FBO,
// if it's bound.
void GLContext::AfterGLDrawCall() {
if (mScreen) {
mScreen->AfterDrawCall();
}
mHeavyGLCallsSinceLastFlush = true;
}
// Do whatever setup is necessary to read from our offscreen FBO, if it's
// bound.
void GLContext::BeforeGLReadCall() {
if (mScreen) mScreen->BeforeReadCall();
}
void GLContext::fBindFramebuffer(GLenum target, GLuint framebuffer) {
if (!mScreen) {
raw_fBindFramebuffer(target, framebuffer);
return;
}
switch (target) {
case LOCAL_GL_DRAW_FRAMEBUFFER_EXT:
mScreen->BindDrawFB(framebuffer);
return;
case LOCAL_GL_READ_FRAMEBUFFER_EXT:
mScreen->BindReadFB(framebuffer);
return;
case LOCAL_GL_FRAMEBUFFER:
mScreen->BindFB(framebuffer);
return;
default:
// Nothing we care about, likely an error.
break;
}
raw_fBindFramebuffer(target, framebuffer);
}
void GLContext::fCopyTexImage2D(GLenum target, GLint level,
GLenum internalformat, GLint x, GLint y,
GLsizei width, GLsizei height, GLint border) {
if (!IsTextureSizeSafeToPassToDriver(target, width, height)) {
// pass wrong values to cause the GL to generate GL_INVALID_VALUE.
// See bug 737182 and the comment in IsTextureSizeSafeToPassToDriver.
level = -1;
width = -1;
height = -1;
border = -1;
}
BeforeGLReadCall();
bool didCopyTexImage2D = false;
if (mScreen) {
didCopyTexImage2D = mScreen->CopyTexImage2D(target, level, internalformat,
x, y, width, height, border);
}
if (!didCopyTexImage2D) {
raw_fCopyTexImage2D(target, level, internalformat, x, y, width, height,
border);
}
AfterGLReadCall();
}
void GLContext::fGetIntegerv(GLenum pname, GLint* params) {
switch (pname) {
// LOCAL_GL_FRAMEBUFFER_BINDING is equal to
// LOCAL_GL_DRAW_FRAMEBUFFER_BINDING_EXT,
// so we don't need two cases.
case LOCAL_GL_DRAW_FRAMEBUFFER_BINDING_EXT:
if (mScreen) {
*params = mScreen->GetDrawFB();
} else {
raw_fGetIntegerv(pname, params);
}
break;
case LOCAL_GL_READ_FRAMEBUFFER_BINDING_EXT:
if (mScreen) {
*params = mScreen->GetReadFB();
} else {
raw_fGetIntegerv(pname, params);
}
break;
case LOCAL_GL_MAX_TEXTURE_SIZE:
MOZ_ASSERT(mMaxTextureSize > 0);
*params = mMaxTextureSize;
break;
case LOCAL_GL_MAX_CUBE_MAP_TEXTURE_SIZE:
MOZ_ASSERT(mMaxCubeMapTextureSize > 0);
*params = mMaxCubeMapTextureSize;
break;
case LOCAL_GL_MAX_RENDERBUFFER_SIZE:
MOZ_ASSERT(mMaxRenderbufferSize > 0);
*params = mMaxRenderbufferSize;
break;
case LOCAL_GL_VIEWPORT:
for (size_t i = 0; i < 4; i++) {
params[i] = mViewportRect[i];
}
break;
case LOCAL_GL_SCISSOR_BOX:
for (size_t i = 0; i < 4; i++) {
params[i] = mScissorRect[i];
}
break;
default:
raw_fGetIntegerv(pname, params);
break;
}
}
void GLContext::fReadPixels(GLint x, GLint y, GLsizei width, GLsizei height,
GLenum format, GLenum type, GLvoid* pixels) {
BeforeGLReadCall();
bool didReadPixels = false;
if (mScreen) {
didReadPixels =
mScreen->ReadPixels(x, y, width, height, format, type, pixels);
}
if (!didReadPixels) {
raw_fReadPixels(x, y, width, height, format, type, pixels);
}
AfterGLReadCall();
// Check if GL is giving back 1.0 alpha for
// RGBA reads to RGBA images from no-alpha buffers.
#ifdef XP_MACOSX
if (WorkAroundDriverBugs() && Vendor() == gl::GLVendor::NVIDIA &&
format == LOCAL_GL_RGBA && type == LOCAL_GL_UNSIGNED_BYTE &&
!IsCoreProfile() && width && height) {
GLint alphaBits = 0;
fGetIntegerv(LOCAL_GL_ALPHA_BITS, &alphaBits);
if (!alphaBits) {
const uint32_t alphaMask = 0xff000000;
uint32_t* itr = (uint32_t*)pixels;
uint32_t testPixel = *itr;
if ((testPixel & alphaMask) != alphaMask) {
// We need to set the alpha channel to 1.0 manually.
uint32_t* itrEnd =
itr + width * height; // Stride is guaranteed to be width*4.
for (; itr != itrEnd; itr++) {
*itr |= alphaMask;
}
}
}
}
#endif
}
void GLContext::fDeleteFramebuffers(GLsizei n, const GLuint* names) {
if (mScreen) {
// Notify mScreen which framebuffers we're deleting.
// Otherwise, we will get framebuffer binding mispredictions.
for (int i = 0; i < n; i++) {
mScreen->DeletingFB(names[i]);
}
}
// Avoid crash by flushing before glDeleteFramebuffers. See bug 1194923.
if (mNeedsFlushBeforeDeleteFB) {
fFlush();
}
if (n == 1 && *names == 0) {
// Deleting framebuffer 0 causes hangs on the DROID. See bug 623228.
} else {
raw_fDeleteFramebuffers(n, names);
}
TRACKING_CONTEXT(DeletedFramebuffers(this, n, names));
}
#ifdef MOZ_WIDGET_ANDROID
/**
* Conservatively estimate whether there is enough available
* contiguous virtual address space to map a newly allocated texture.
*/
static bool WillTextureMapSucceed(GLsizei width, GLsizei height, GLenum format,
GLenum type) {
bool willSucceed = false;
// Some drivers leave large gaps between textures, so require
// there to be double the actual size of the texture available.
size_t size = width * height * GetBytesPerTexel(format, type) * 2;
void* p = mmap(nullptr, size, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (p != MAP_FAILED) {
willSucceed = true;
munmap(p, size);
}
return willSucceed;
}
#endif // MOZ_WIDGET_ANDROID
void GLContext::fTexImage2D(GLenum target, GLint level, GLint internalformat,
GLsizei width, GLsizei height, GLint border,
GLenum format, GLenum type, const GLvoid* pixels) {
if (!IsTextureSizeSafeToPassToDriver(target, width, height)) {
// pass wrong values to cause the GL to generate GL_INVALID_VALUE.
// See bug 737182 and the comment in IsTextureSizeSafeToPassToDriver.
level = -1;
width = -1;
height = -1;
border = -1;
}
#if MOZ_WIDGET_ANDROID
if (mTextureAllocCrashesOnMapFailure) {
// We have no way of knowing whether this texture already has
// storage allocated for it, and therefore whether this check
// is necessary. We must therefore assume it does not and
// always perform the check.
if (!WillTextureMapSucceed(width, height, internalformat, type)) {
return;
}
}
#endif
raw_fTexImage2D(target, level, internalformat, width, height, border, format,
type, pixels);
}
GLuint GLContext::GetDrawFB() {
if (mScreen) return mScreen->GetDrawFB();
GLuint ret = 0;
GetUIntegerv(LOCAL_GL_DRAW_FRAMEBUFFER_BINDING_EXT, &ret);
return ret;
}
GLuint GLContext::GetReadFB() {
if (mScreen) return mScreen->GetReadFB();
GLenum bindEnum = IsSupported(GLFeature::split_framebuffer)
? LOCAL_GL_READ_FRAMEBUFFER_BINDING_EXT
: LOCAL_GL_FRAMEBUFFER_BINDING;
GLuint ret = 0;
GetUIntegerv(bindEnum, &ret);
return ret;
}
GLuint GLContext::GetFB() {
if (mScreen) {
// This has a very important extra assert that checks that we're
// not accidentally ignoring a situation where the draw and read
// FBs differ.
return mScreen->GetFB();
}
GLuint ret = 0;
GetUIntegerv(LOCAL_GL_FRAMEBUFFER_BINDING, &ret);
return ret;
}
bool GLContext::InitOffscreen(const gfx::IntSize& size,
const SurfaceCaps& caps) {
if (!CreateScreenBuffer(size, caps)) return false;
if (!MakeCurrent()) {
return false;
}
fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, 0);
fScissor(0, 0, size.width, size.height);
fViewport(0, 0, size.width, size.height);
mCaps = mScreen->mCaps;
MOZ_ASSERT(!mCaps.any);
return true;
}
bool GLContext::IsDrawingToDefaultFramebuffer() {
return Screen()->IsDrawFramebufferDefault();
}
GLuint CreateTexture(GLContext* aGL, GLenum aInternalFormat, GLenum aFormat,
GLenum aType, const gfx::IntSize& aSize, bool linear) {
GLuint tex = 0;
aGL->fGenTextures(1, &tex);
ScopedBindTexture autoTex(aGL, tex);
aGL->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER,
linear ? LOCAL_GL_LINEAR : LOCAL_GL_NEAREST);
aGL->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER,
linear ? LOCAL_GL_LINEAR : LOCAL_GL_NEAREST);
aGL->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_S,
LOCAL_GL_CLAMP_TO_EDGE);
aGL->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T,
LOCAL_GL_CLAMP_TO_EDGE);
aGL->fTexImage2D(LOCAL_GL_TEXTURE_2D, 0, aInternalFormat, aSize.width,
aSize.height, 0, aFormat, aType, nullptr);
return tex;
}
GLuint CreateTextureForOffscreen(GLContext* aGL, const GLFormats& aFormats,
const gfx::IntSize& aSize) {
MOZ_ASSERT(aFormats.color_texInternalFormat);
MOZ_ASSERT(aFormats.color_texFormat);
MOZ_ASSERT(aFormats.color_texType);
GLenum internalFormat = aFormats.color_texInternalFormat;
GLenum unpackFormat = aFormats.color_texFormat;
GLenum unpackType = aFormats.color_texType;
if (aGL->IsANGLE()) {
MOZ_ASSERT(internalFormat == LOCAL_GL_RGBA);
MOZ_ASSERT(unpackFormat == LOCAL_GL_RGBA);
MOZ_ASSERT(unpackType == LOCAL_GL_UNSIGNED_BYTE);
internalFormat = LOCAL_GL_BGRA_EXT;
unpackFormat = LOCAL_GL_BGRA_EXT;
}
return CreateTexture(aGL, internalFormat, unpackFormat, unpackType, aSize);
}
uint32_t GetBytesPerTexel(GLenum format, GLenum type) {
// If there is no defined format or type, we're not taking up any memory
if (!format || !type) {
return 0;
}
if (format == LOCAL_GL_DEPTH_COMPONENT) {
if (type == LOCAL_GL_UNSIGNED_SHORT)
return 2;
else if (type == LOCAL_GL_UNSIGNED_INT)
return 4;
} else if (format == LOCAL_GL_DEPTH_STENCIL) {
if (type == LOCAL_GL_UNSIGNED_INT_24_8_EXT) return 4;
}
if (type == LOCAL_GL_UNSIGNED_BYTE || type == LOCAL_GL_FLOAT ||
type == LOCAL_GL_UNSIGNED_INT_8_8_8_8_REV) {
uint32_t multiplier = type == LOCAL_GL_UNSIGNED_BYTE ? 1 : 4;
switch (format) {
case LOCAL_GL_ALPHA:
case LOCAL_GL_LUMINANCE:
return 1 * multiplier;
case LOCAL_GL_LUMINANCE_ALPHA:
return 2 * multiplier;
case LOCAL_GL_RGB:
return 3 * multiplier;
case LOCAL_GL_RGBA:
case LOCAL_GL_BGRA_EXT:
return 4 * multiplier;
default:
break;
}
} else if (type == LOCAL_GL_UNSIGNED_SHORT_4_4_4_4 ||
type == LOCAL_GL_UNSIGNED_SHORT_5_5_5_1 ||
type == LOCAL_GL_UNSIGNED_SHORT_5_6_5 ||
type == LOCAL_GL_UNSIGNED_SHORT) {
return 2;
}
gfxCriticalError() << "Unknown texture type " << type << " or format "
<< format;
return 0;
}
bool GLContext::MakeCurrent(bool aForce) const {
if (MOZ_UNLIKELY(IsContextLost())) return false;
if (MOZ_LIKELY(!aForce)) {
bool isCurrent;
if (mUseTLSIsCurrent) {
isCurrent = (sCurrentContext.get() == reinterpret_cast<uintptr_t>(this));
} else {
isCurrent = IsCurrentImpl();
}
if (MOZ_LIKELY(isCurrent)) {
MOZ_ASSERT(IsCurrentImpl() ||
!MakeCurrentImpl()); // Might have lost context.
return true;
}
}
if (!MakeCurrentImpl()) return false;
sCurrentContext.set(reinterpret_cast<uintptr_t>(this));
return true;
}
void GLContext::ResetSyncCallCount(const char* resetReason) const {
if (ShouldSpew()) {
printf_stderr("On %s, mSyncGLCallCount = %" PRIu64 "\n", resetReason,
mSyncGLCallCount);
}
mSyncGLCallCount = 0;
}
// -
bool CheckContextLost(const GLContext* const gl) {
return gl->CheckContextLost();
}
// -
GLenum GLContext::GetError() const {
if (mContextLost) return LOCAL_GL_CONTEXT_LOST;
if (mImplicitMakeCurrent) {
(void)MakeCurrent();
}
const auto fnGetError = [&]() {
const auto ret = mSymbols.fGetError();
if (ret == LOCAL_GL_CONTEXT_LOST) {
OnContextLostError();
mTopError = ret; // Promote to top!
}
return ret;
};
auto ret = fnGetError();
{
auto flushedErr = ret;
uint32_t i = 1;
while (flushedErr && !mContextLost) {
if (i == 100) {
gfxCriticalError() << "Flushing glGetError still "
<< gfx::hexa(flushedErr) << " after " << i
<< " calls.";
break;
}
flushedErr = fnGetError();
i += 1;
}
}
if (mTopError) {
ret = mTopError;
mTopError = 0;
}
if (mDebugFlags & DebugFlagTrace) {
const auto errStr = GLErrorToString(ret);
printf_stderr("[gl:%p] GetError() -> %s\n", this, errStr.c_str());
}
return ret;
}
GLenum GLContext::fGetGraphicsResetStatus() const {
OnSyncCall();
GLenum ret = 0;
if (mSymbols.fGetGraphicsResetStatus) {
if (mImplicitMakeCurrent) {
(void)MakeCurrent();
}
ret = mSymbols.fGetGraphicsResetStatus();
} else {
if (!MakeCurrent(true)) {
ret = LOCAL_GL_UNKNOWN_CONTEXT_RESET_ARB;
}
}
if (mDebugFlags & DebugFlagTrace) {
printf_stderr("[gl:%p] GetGraphicsResetStatus() -> 0x%04x\n", this, ret);
}
return ret;
}
void GLContext::OnContextLostError() const {
if (mDebugFlags & DebugFlagTrace) {
printf_stderr("[gl:%p] CONTEXT_LOST\n", this);
}
mContextLost = true;
}
// --
/*static*/ std::string GLContext::GLErrorToString(const GLenum err) {
switch (err) {
case LOCAL_GL_NO_ERROR:
return "GL_NO_ERROR";
case LOCAL_GL_INVALID_ENUM:
return "GL_INVALID_ENUM";
case LOCAL_GL_INVALID_VALUE:
return "GL_INVALID_VALUE";
case LOCAL_GL_INVALID_OPERATION:
return "GL_INVALID_OPERATION";
case LOCAL_GL_STACK_OVERFLOW:
return "GL_STACK_OVERFLOW";
case LOCAL_GL_STACK_UNDERFLOW:
return "GL_STACK_UNDERFLOW";
case LOCAL_GL_OUT_OF_MEMORY:
return "GL_OUT_OF_MEMORY";
case LOCAL_GL_TABLE_TOO_LARGE:
return "GL_TABLE_TOO_LARGE";
case LOCAL_GL_INVALID_FRAMEBUFFER_OPERATION:
return "GL_INVALID_FRAMEBUFFER_OPERATION";
case LOCAL_GL_CONTEXT_LOST:
return "GL_CONTEXT_LOST";
}
const nsPrintfCString hex("<enum 0x%04x>", err);
return hex.BeginReading();
}
// --
void GLContext::BeforeGLCall_Debug(const char* const funcName) const {
MOZ_ASSERT(mDebugFlags);
if (mDebugFlags & DebugFlagTrace) {
printf_stderr("[gl:%p] > %s\n", this, funcName);
}
MOZ_ASSERT(!mDebugErrorScope);
mDebugErrorScope.reset(new LocalErrorScope(*this));
}
void GLContext::AfterGLCall_Debug(const char* const funcName) const {
MOZ_ASSERT(mDebugFlags);
// calling fFinish() immediately after every GL call makes sure that if this
// GL command crashes, the stack trace will actually point to it. Otherwise,
// OpenGL being an asynchronous API, stack traces tend to be meaningless
mSymbols.fFinish();
const auto err = mDebugErrorScope->GetError();
mDebugErrorScope = nullptr;
if (!mTopError) {
mTopError = err;
}
if (mDebugFlags & DebugFlagTrace) {
printf_stderr("[gl:%p] < %s [%s]\n", this, funcName,
GLErrorToString(err).c_str());
}
if (err && !mLocalErrorScopeStack.size()) {
const auto errStr = GLErrorToString(err);
const auto text = nsPrintfCString("%s: Generated unexpected %s error",
funcName, errStr.c_str());
printf_stderr("[gl:%p] %s.\n", this, text.BeginReading());
const bool abortOnError = mDebugFlags & DebugFlagAbortOnError;
if (abortOnError && err != LOCAL_GL_CONTEXT_LOST) {
gfxCriticalErrorOnce() << text.BeginReading();
MOZ_CRASH(
"Aborting... (Run with MOZ_GL_DEBUG_ABORT_ON_ERROR=0 to disable)");
}
}
}
/*static*/
void GLContext::OnImplicitMakeCurrentFailure(const char* const funcName) {
gfxCriticalError() << "Ignoring call to " << funcName << " with failed"
<< " mImplicitMakeCurrent.";
}
// -
// These are defined out of line so that we don't need to include
// ISurfaceAllocator.h in SurfaceTypes.h.
SurfaceCaps::SurfaceCaps() = default;
SurfaceCaps::SurfaceCaps(const SurfaceCaps& other) = default;
SurfaceCaps& SurfaceCaps::operator=(const SurfaceCaps& other) = default;
SurfaceCaps::~SurfaceCaps() = default;
} /* namespace gl */
} /* namespace mozilla */
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