diff options
Diffstat (limited to 'gfx/gl/GLContext.cpp')
| -rw-r--r-- | gfx/gl/GLContext.cpp | 2677 |
1 files changed, 2677 insertions, 0 deletions
diff --git a/gfx/gl/GLContext.cpp b/gfx/gl/GLContext.cpp new file mode 100644 index 0000000000..f67aedd0b2 --- /dev/null +++ b/gfx/gl/GLContext.cpp @@ -0,0 +1,2677 @@ +/* -*- 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 +#if defined(XP_LINUX) && !defined(ANDROID) +// For MesaMemoryLeakWorkaround +# include <dlfcn.h> +# include <link.h> +#endif + +#include "GLBlitHelper.h" +#include "GLReadTexImageHelper.h" +#include "GLScreenBuffer.h" + +#include "gfxCrashReporterUtils.h" +#include "gfxEnv.h" +#include "gfxUtils.h" +#include "GLContextProvider.h" +#include "GLLibraryLoader.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 "mozilla/layers/BuildConstants.h" +#include "mozilla/layers/TextureForwarder.h" // for LayersIPCChannel + +#include "OGLShaderProgram.h" // for ShaderProgramType + +#include "mozilla/DebugOnly.h" +#include "mozilla/Maybe.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; + +// Zero-initialized after init(). +MOZ_THREAD_LOCAL(const GLContext*) 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_provoking_vertex", + "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_provoking_vertex", + "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_provoking_vertex", + "GL_EXT_read_format_bgra", + "GL_EXT_robustness", + "GL_EXT_sRGB", + "GL_EXT_sRGB_write_control", + "GL_EXT_shader_texture_lod", + "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_norm16", + "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_parallel_shader_compile", + "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_draw_buffers_indexed", + "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_BUILD + if (gfxEnv::MOZ_GL_DEBUG()) { + 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::MOZ_GL_DEBUG_VERBOSE()) { + 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& env = gfxEnv::MOZ_GL_DEBUG_ABORT_ON_ERROR(); + if (env.as_str == "0") { + abortOnError = false; + } + } + + if (abortOnError) { + debugFlags |= GLContext::DebugFlagAbortOnError; + } +#endif + + return debugFlags; +} + +GLContext::GLContext(const GLContextDesc& desc, GLContext* sharedContext, + bool useTLSIsCurrent) + : mDesc(desc), + mUseTLSIsCurrent(ShouldUseTLSIsCurrent(useTLSIsCurrent)), + mDebugFlags(ChooseDebugFlags(mDesc.flags)), + mSharedContext(sharedContext), + mOwningThreadId(Some(PlatformThread::CurrentId())), + mWorkAroundDriverBugs( + StaticPrefs::gfx_work_around_driver_bugs_AtStartup()) {} + +GLContext::~GLContext() { + NS_ASSERTION( + IsDestroyed(), + "GLContext implementation must call MarkDestroyed in destructor!"); +#ifdef MOZ_GL_DEBUG_BUILD + if (mSharedContext) { + GLContext* tip = mSharedContext; + while (tip->mSharedContext) tip = tip->mSharedContext; + tip->SharedContextDestroyed(this); + tip->ReportOutstandingNames(); + } else { + ReportOutstandingNames(); + } +#endif + // Ensure we clear sCurrentContext if we were the last context set and avoid + // the memory getting reused. + if (sCurrentContext.init() && sCurrentContext.get() == this) { + sCurrentContext.set(nullptr); + } +} + +/*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); + + // We need to call the fGetError symbol directly here because if there is an + // unflushed reset status, we don't want to mark the context as lost. That + // would prevent us from recovering. + auto err = mSymbols.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 auto* const versionRawStr = (const char*)fGetString(LOCAL_GL_VERSION); + if (!versionRawStr || !*versionRawStr) { + // This can happen with Pernosco. + NS_WARNING("Empty GL version string"); + return false; + } + + const std::string versionStr = versionRawStr; + 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", + "Mali-T", + "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; + } + } + + { + const auto versionStr = (const char*)fGetString(LOCAL_GL_VERSION); + if (strstr(versionStr, "Mesa")) { + mIsMesa = true; + } + } + + const auto Once = []() { + static bool did = false; + if (did) return false; + did = true; + return true; + }; + + bool printRenderer = ShouldSpew(); + printRenderer |= (kIsDebug && Once()); + if (printRenderer) { + 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)]); + printf_stderr("mIsMesa: %i\n", int(mIsMesa)); + } + + //////////////// + + 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 (Renderer() == GLRenderer::AndroidEmulator) { + // Bug 1665300 + mSymbols.fGetGraphicsResetStatus = 0; + } + + 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); + } + + if (IsMesa()) { + // 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); + 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::transform_feedback2)) { + // 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::draw_buffers_indexed)) { + const SymLoadStruct coreSymbols[] = { + { (PRFuncPtr*) &mSymbols.fBlendEquationSeparatei, {{ "glBlendEquationSeparatei" }} }, + { (PRFuncPtr*) &mSymbols.fBlendFuncSeparatei, {{ "glBlendFuncSeparatei" }} }, + { (PRFuncPtr*) &mSymbols.fColorMaski, {{ "glColorMaski" }} }, + { (PRFuncPtr*) &mSymbols.fDisablei, {{ "glDisablei" }} }, + { (PRFuncPtr*) &mSymbols.fEnablei, {{ "glEnablei" }} }, + END_SYMBOLS + }; + const SymLoadStruct extSymbols[] = { + { (PRFuncPtr*) &mSymbols.fBlendEquationSeparatei, {{ "glBlendEquationSeparateiOES" }} }, + { (PRFuncPtr*) &mSymbols.fBlendFuncSeparatei, {{ "glBlendFuncSeparateiOES" }} }, + { (PRFuncPtr*) &mSymbols.fColorMaski, {{ "glColorMaskiOES" }} }, + { (PRFuncPtr*) &mSymbols.fDisablei, {{ "glDisableiOES" }} }, + { (PRFuncPtr*) &mSymbols.fEnablei, {{ "glEnableiOES" }} }, + END_SYMBOLS + }; + fnLoadFeatureByCore(coreSymbols, extSymbols, GLFeature::draw_buffers_indexed); + } + + 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.fTexImage3D, {{ "glTexImage3DOES" }} }, + { (PRFuncPtr*) &mSymbols.fTexSubImage3D, {{ "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); + } + + if (IsSupported(GLFeature::provoking_vertex)) { + const SymLoadStruct symbols[] = {{(PRFuncPtr*)&mSymbols.fProvokingVertex, + {{ + "glProvokingVertex", + "glProvokingVertexANGLE", + "glProvokingVertexEXT", + }}}, + END_SYMBOLS}; + fnLoadForFeature(symbols, GLFeature::provoking_vertex); + } + + // 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 = "SOURCE_API"_ns; + break; + case LOCAL_GL_DEBUG_SOURCE_WINDOW_SYSTEM: + sourceStr = "SOURCE_WINDOW_SYSTEM"_ns; + break; + case LOCAL_GL_DEBUG_SOURCE_SHADER_COMPILER: + sourceStr = "SOURCE_SHADER_COMPILER"_ns; + break; + case LOCAL_GL_DEBUG_SOURCE_THIRD_PARTY: + sourceStr = "SOURCE_THIRD_PARTY"_ns; + break; + case LOCAL_GL_DEBUG_SOURCE_APPLICATION: + sourceStr = "SOURCE_APPLICATION"_ns; + break; + case LOCAL_GL_DEBUG_SOURCE_OTHER: + sourceStr = "SOURCE_OTHER"_ns; + break; + default: + sourceStr = nsPrintfCString("<source 0x%04x>", source); + break; + } + + nsAutoCString typeStr; + switch (type) { + case LOCAL_GL_DEBUG_TYPE_ERROR: + typeStr = "TYPE_ERROR"_ns; + break; + case LOCAL_GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR: + typeStr = "TYPE_DEPRECATED_BEHAVIOR"_ns; + break; + case LOCAL_GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR: + typeStr = "TYPE_UNDEFINED_BEHAVIOR"_ns; + break; + case LOCAL_GL_DEBUG_TYPE_PORTABILITY: + typeStr = "TYPE_PORTABILITY"_ns; + break; + case LOCAL_GL_DEBUG_TYPE_PERFORMANCE: + typeStr = "TYPE_PERFORMANCE"_ns; + break; + case LOCAL_GL_DEBUG_TYPE_OTHER: + typeStr = "TYPE_OTHER"_ns; + break; + case LOCAL_GL_DEBUG_TYPE_MARKER: + typeStr = "TYPE_MARKER"_ns; + break; + default: + typeStr = nsPrintfCString("<type 0x%04x>", type); + break; + } + + nsAutoCString sevStr; + switch (severity) { + case LOCAL_GL_DEBUG_SEVERITY_HIGH: + sevStr = "SEVERITY_HIGH"_ns; + break; + case LOCAL_GL_DEBUG_SEVERITY_MEDIUM: + sevStr = "SEVERITY_MEDIUM"_ns; + break; + case LOCAL_GL_DEBUG_SEVERITY_LOW: + sevStr = "SEVERITY_LOW"_ns; + break; + case LOCAL_GL_DEBUG_SEVERITY_NOTIFICATION: + sevStr = "SEVERITY_NOTIFICATION"_ns; + 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; +} + +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(GetIntAs<GLuint>(LOCAL_GL_FRAMEBUFFER_BINDING) == 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_BUILD + if (ShouldSpew()) { + printf_stderr("Framebuffer status: %X\n", status); + } +#endif + isComplete = false; + } + + if (!IsFramebufferComplete(readFB, &status)) { + NS_WARNING("ReadFBO: Incomplete"); +#ifdef MOZ_GL_DEBUG_BUILD + 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. + mBlitHelper = nullptr; + mReadTexImageHelper = nullptr; + + mContextLost = true; + mSymbols = {}; +} + +// - + +#ifdef MOZ_GL_DEBUG_BUILD +/* 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.Clone()); + 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 // ifdef MOZ_GL_DEBUG_BUILD + +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::IsValidOwningThread() const { + if (!mOwningThreadId) return true; // Free for all! + 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::MOZ_GL_DUMP_EXTS(); } + +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::MOZ_GL_SPEW(); } + +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)); +} + +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(); + raw_fCopyTexImage2D(target, level, internalformat, x, y, width, height, + border); + AfterGLReadCall(); +} + +void GLContext::fGetIntegerv(const GLenum pname, GLint* const params) const { + const auto AssertBinding = [&](const char* const name, const GLenum binding, + const GLuint expected) { + if (MOZ_LIKELY(!mDebugFlags)) return; + GLuint actual = 0; + raw_fGetIntegerv(binding, (GLint*)&actual); + if (actual != expected) { + gfxCriticalError() << "Misprediction: " << name << " expected " + << expected << ", was " << actual; + } + }; + + switch (pname) { + case LOCAL_GL_MAX_TEXTURE_SIZE: + MOZ_ASSERT(mMaxTextureSize > 0); + *params = mMaxTextureSize; + return; + + case LOCAL_GL_MAX_CUBE_MAP_TEXTURE_SIZE: + MOZ_ASSERT(mMaxCubeMapTextureSize > 0); + *params = mMaxCubeMapTextureSize; + return; + + case LOCAL_GL_MAX_RENDERBUFFER_SIZE: + MOZ_ASSERT(mMaxRenderbufferSize > 0); + *params = mMaxRenderbufferSize; + return; + + case LOCAL_GL_VIEWPORT: + for (size_t i = 0; i < 4; i++) { + params[i] = mViewportRect[i]; + } + return; + + case LOCAL_GL_SCISSOR_BOX: + for (size_t i = 0; i < 4; i++) { + params[i] = mScissorRect[i]; + } + return; + + case LOCAL_GL_DRAW_FRAMEBUFFER_BINDING: + if (mElideDuplicateBindFramebuffers) { + static_assert(LOCAL_GL_DRAW_FRAMEBUFFER_BINDING == + LOCAL_GL_FRAMEBUFFER_BINDING); + AssertBinding("GL_DRAW_FRAMEBUFFER_BINDING", + LOCAL_GL_DRAW_FRAMEBUFFER_BINDING, mCachedDrawFb); + *params = static_cast<GLint>(mCachedDrawFb); + return; + } + break; + + case LOCAL_GL_READ_FRAMEBUFFER_BINDING: + if (mElideDuplicateBindFramebuffers) { + if (IsSupported(GLFeature::framebuffer_blit)) { + AssertBinding("GL_READ_FRAMEBUFFER_BINDING", + LOCAL_GL_READ_FRAMEBUFFER_BINDING, mCachedReadFb); + } + *params = static_cast<GLint>(mCachedReadFb); + return; + } + break; + + default: + break; + } + raw_fGetIntegerv(pname, params); +} + +void GLContext::fReadPixels(GLint x, GLint y, GLsizei width, GLsizei height, + GLenum format, GLenum type, GLvoid* pixels) { + BeforeGLReadCall(); + 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) { + // 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); +} + +UniquePtr<Texture> CreateTexture(GLContext& gl, const gfx::IntSize& size) { + const GLenum target = LOCAL_GL_TEXTURE_2D; + const GLenum format = LOCAL_GL_RGBA; + + auto tex = MakeUnique<Texture>(gl); + ScopedBindTexture autoTex(&gl, tex->name, target); + + gl.fTexParameteri(target, LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_LINEAR); + gl.fTexParameteri(target, LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_LINEAR); + gl.fTexParameteri(target, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE); + gl.fTexParameteri(target, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE); + + gl.fTexImage2D(target, 0, format, size.width, size.height, 0, format, + LOCAL_GL_UNSIGNED_BYTE, nullptr); + + return tex; +} + +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: + case LOCAL_GL_R8: + return 1 * multiplier; + case LOCAL_GL_LUMINANCE_ALPHA: + case LOCAL_GL_R16: + 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 && sCurrentContext.init()) { + isCurrent = (sCurrentContext.get() == this); + } else { + isCurrent = IsCurrentImpl(); + } + if (MOZ_LIKELY(isCurrent)) { + MOZ_ASSERT(IsCurrentImpl() || + !MakeCurrentImpl()); // Might have lost context. + return true; + } + } + if (!IsValidOwningThread()) { + gfxCriticalError() << "MakeCurrent called on a thread other than the" + << " creating thread!"; + if (gfxEnv::MOZ_GL_RELEASE_ASSERT_CONTEXT_OWNERSHIP()) { + MOZ_CRASH("MOZ_GL_RELEASE_ASSERT_CONTEXT_OWNERSHIP"); + } + } + if (!MakeCurrentImpl()) return false; + + if (sCurrentContext.init()) { + sCurrentContext.set(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."; +} + +bool GLContext::CreateOffscreenDefaultFb(const gfx::IntSize& size) { + mOffscreenDefaultFb = MozFramebuffer::Create(this, size, 0, true); + return bool(mOffscreenDefaultFb); +} + +// Some of Mesa's drivers allocate heap memory when loaded and don't +// free it when unloaded; this causes Leak Sanitizer to detect leaks and +// fail to unwind the stack, so suppressions don't work. This +// workaround leaks a reference to the driver library so that it's never +// unloaded. Because the leak isn't significant for real usage, only +// ASan runs in CI, this is applied only to the software renderer. +// +// See bug 1702394 for more details. +void MesaMemoryLeakWorkaround() { +#if defined(XP_LINUX) && !defined(ANDROID) + Maybe<nsAutoCString> foundPath; + + dl_iterate_phdr( + [](dl_phdr_info* info, size_t size, void* data) { + auto& foundPath = *reinterpret_cast<Maybe<nsAutoCString>*>(data); + nsDependentCString thisPath(info->dlpi_name); + if (StringEndsWith(thisPath, "/swrast_dri.so"_ns)) { + foundPath.emplace(thisPath); + return 1; + } + return 0; + }, + &foundPath); + + if (foundPath) { + // Deliberately leak to prevent unload + Unused << dlopen(foundPath->get(), RTLD_LAZY); + } +#endif // XP_LINUX but not ANDROID +} + +} /* namespace gl */ +} /* namespace mozilla */ |