Example #1
0
const GrGLInterface* GrGLAssembleGLESInterface(void* ctx, GrGLGetProc get) {
    GET_PROC_LOCAL(GetString);
    if (nullptr == GetString) {
        return nullptr;
    }

    const char* verStr = reinterpret_cast<const char*>(GetString(GR_GL_VERSION));
    GrGLVersion version = GrGLGetVersionFromString(verStr);

    if (version < GR_GL_VER(2,0)) {
        return nullptr;
    }

    GET_PROC_LOCAL(GetIntegerv);
    GET_PROC_LOCAL(GetStringi);
    GrEGLQueryStringProc queryString;
    GrEGLDisplay display;
    get_egl_query_and_display(&queryString, &display, ctx, get);
    GrGLExtensions extensions;
    if (!extensions.init(kGLES_GrGLStandard, GetString, GetStringi, GetIntegerv, queryString,
                         display)) {
        return nullptr;
    }

    GrGLInterface* interface = new GrGLInterface;
    GrGLInterface::Functions* functions = &interface->fFunctions;

    GET_PROC(ActiveTexture);
    GET_PROC(AttachShader);
    GET_PROC(BindAttribLocation);
    GET_PROC(BindBuffer);
    GET_PROC(BindTexture);
    GET_PROC_SUFFIX(BindVertexArray, OES);

    if (version >= GR_GL_VER(3,0) && extensions.has("GL_EXT_blend_func_extended")) {
        GET_PROC_SUFFIX(BindFragDataLocation, EXT);
        GET_PROC_SUFFIX(BindFragDataLocationIndexed, EXT);
    }

    if (extensions.has("GL_KHR_blend_equation_advanced")) {
        GET_PROC_SUFFIX(BlendBarrier, KHR);
    } else if (extensions.has("GL_NV_blend_equation_advanced")) {
        GET_PROC_SUFFIX(BlendBarrier, NV);
    }

    GET_PROC(BlendColor);
    GET_PROC(BlendEquation);
    GET_PROC(BlendFunc);
    GET_PROC(BufferData);
    GET_PROC(BufferSubData);
    GET_PROC(Clear);
    GET_PROC(ClearColor);
    GET_PROC(ClearStencil);
    GET_PROC(ColorMask);
    GET_PROC(CompileShader);
    GET_PROC(CompressedTexImage2D);
    GET_PROC(CompressedTexSubImage2D);
    GET_PROC(CopyTexSubImage2D);
    GET_PROC(CreateProgram);
    GET_PROC(CreateShader);
    GET_PROC(CullFace);
    GET_PROC(DeleteBuffers);
    GET_PROC(DeleteProgram);
    GET_PROC(DeleteShader);
    GET_PROC(DeleteTextures);
    GET_PROC_SUFFIX(DeleteVertexArrays, OES);
    GET_PROC(DepthMask);
    GET_PROC(Disable);
    GET_PROC(DisableVertexAttribArray);
    GET_PROC(DrawArrays);

    if (version >= GR_GL_VER(3,0)) {
        GET_PROC(DrawArraysInstanced);
        GET_PROC(DrawElementsInstanced);
    } else if (extensions.has("GL_EXT_draw_instanced")) {
        GET_PROC_SUFFIX(DrawArraysInstanced, EXT);
        GET_PROC_SUFFIX(DrawElementsInstanced, EXT);
    }

    if (version >= GR_GL_VER(3,1)) {
        GET_PROC(DrawArraysIndirect);
        GET_PROC(DrawElementsIndirect);
    }

    GET_PROC(DrawElements);
    GET_PROC(Enable);
    GET_PROC(EnableVertexAttribArray);
    GET_PROC(Finish);
    GET_PROC(Flush);
    GET_PROC(FrontFace);
    GET_PROC(GenBuffers);
    GET_PROC(GenerateMipmap);
    GET_PROC(GenTextures);
    GET_PROC_SUFFIX(GenVertexArrays, OES);
    GET_PROC(GetBufferParameteriv);
    GET_PROC(GetError);
    GET_PROC(GetIntegerv);
    GET_PROC(GetProgramInfoLog);
    GET_PROC(GetProgramiv);
    GET_PROC(GetShaderInfoLog);
    GET_PROC(GetShaderPrecisionFormat);
    GET_PROC(GetShaderiv);
    GET_PROC(GetString);
    GET_PROC(GetStringi);
    GET_PROC(GetUniformLocation);
    GET_PROC(IsTexture);
    GET_PROC(LineWidth);
    GET_PROC(LinkProgram);
    GET_PROC(PixelStorei);

    if (extensions.has("GL_EXT_raster_multisample")) {
        GET_PROC_SUFFIX(RasterSamples, EXT);
    }

    GET_PROC(ReadPixels);
    GET_PROC(Scissor);
    GET_PROC(ShaderSource);
    GET_PROC(StencilFunc);
    GET_PROC(StencilFuncSeparate);
    GET_PROC(StencilMask);
    GET_PROC(StencilMaskSeparate);
    GET_PROC(StencilOp);
    GET_PROC(StencilOpSeparate);
    GET_PROC(TexImage2D);
    GET_PROC(TexParameteri);
    GET_PROC(TexParameteriv);
    GET_PROC(TexSubImage2D);

    if (version >= GR_GL_VER(3,0)) {
        GET_PROC(TexStorage2D);
    } else {
        GET_PROC_SUFFIX(TexStorage2D, EXT);
    }

    if (extensions.has("GL_NV_texture_barrier")) {
        GET_PROC_SUFFIX(TextureBarrier, NV);
    }

    GET_PROC_SUFFIX(DiscardFramebuffer, EXT);
    GET_PROC(Uniform1f);
    GET_PROC(Uniform1i);
    GET_PROC(Uniform1fv);
    GET_PROC(Uniform1iv);
    GET_PROC(Uniform2f);
    GET_PROC(Uniform2i);
    GET_PROC(Uniform2fv);
    GET_PROC(Uniform2iv);
    GET_PROC(Uniform3f);
    GET_PROC(Uniform3i);
    GET_PROC(Uniform3fv);
    GET_PROC(Uniform3iv);
    GET_PROC(Uniform4f);
    GET_PROC(Uniform4i);
    GET_PROC(Uniform4fv);
    GET_PROC(Uniform4iv);
    GET_PROC(UniformMatrix2fv);
    GET_PROC(UniformMatrix3fv);
    GET_PROC(UniformMatrix4fv);
    GET_PROC(UseProgram);
    GET_PROC(VertexAttrib1f);
    GET_PROC(VertexAttrib2fv);
    GET_PROC(VertexAttrib3fv);
    GET_PROC(VertexAttrib4fv);

    if (version >= GR_GL_VER(3,0)) {
        GET_PROC(VertexAttribDivisor);
    } else if (extensions.has("GL_EXT_instanced_arrays")) {
        GET_PROC_SUFFIX(VertexAttribDivisor, EXT);
    }

    if (version >= GR_GL_VER(3,0)) {
        GET_PROC(VertexAttribIPointer);
    }

    GET_PROC(VertexAttribPointer);
    GET_PROC(Viewport);
    GET_PROC(BindFramebuffer);
    GET_PROC(BindRenderbuffer);
    GET_PROC(CheckFramebufferStatus);
    GET_PROC(DeleteFramebuffers);
    GET_PROC(DeleteRenderbuffers);
    GET_PROC(FramebufferRenderbuffer);
    GET_PROC(FramebufferTexture2D);

    if (extensions.has("GL_CHROMIUM_framebuffer_multisample")) {
        GET_PROC_SUFFIX(RenderbufferStorageMultisample, CHROMIUM);
        GET_PROC_SUFFIX(BlitFramebuffer, CHROMIUM);
    } else if (version >= GR_GL_VER(3,0)) {
        GET_PROC(RenderbufferStorageMultisample);
        GET_PROC(BlitFramebuffer);
    }

    if (extensions.has("GL_CHROMIUM_map_sub")) {
        GET_PROC_SUFFIX(MapBufferSubData, CHROMIUM);
        GET_PROC_SUFFIX(MapTexSubImage2D, CHROMIUM);
        GET_PROC_SUFFIX(UnmapBufferSubData, CHROMIUM);
        GET_PROC_SUFFIX(UnmapTexSubImage2D, CHROMIUM);
    }

    if (extensions.has("GL_EXT_multisampled_render_to_texture")) {
        GET_PROC_SUFFIX(FramebufferTexture2DMultisample, EXT);
        functions->fRenderbufferStorageMultisampleES2EXT = (GrGLRenderbufferStorageMultisampleProc) get(ctx, "glRenderbufferStorageMultisampleEXT");
    } else if (extensions.has("GL_IMG_multisampled_render_to_texture")) {
        GET_PROC_SUFFIX(FramebufferTexture2DMultisample, IMG);
        functions->fRenderbufferStorageMultisampleES2EXT = (GrGLRenderbufferStorageMultisampleProc) get(ctx, "glRenderbufferStorageMultisampleIMG");
    } else if (extensions.has("GL_APPLE_framebuffer_multisample")) {
        functions->fRenderbufferStorageMultisampleES2APPLE = (GrGLRenderbufferStorageMultisampleProc) get(ctx, "glRenderbufferStorageMultisampleAPPLE");
        GET_PROC_SUFFIX(ResolveMultisampleFramebuffer, APPLE);
    }

    GET_PROC(GenFramebuffers);
    GET_PROC(GenRenderbuffers);
    GET_PROC(GetFramebufferAttachmentParameteriv);
    GET_PROC(GetRenderbufferParameteriv);
    GET_PROC(RenderbufferStorage);

    GET_PROC_SUFFIX(MapBuffer, OES);
    GET_PROC_SUFFIX(UnmapBuffer, OES);

    if (version >= GR_GL_VER(3,0)) {
        GET_PROC(MapBufferRange);
        GET_PROC(FlushMappedBufferRange);
    } else if (extensions.has("GL_EXT_map_buffer_range")) {
        GET_PROC_SUFFIX(MapBufferRange, EXT);
        GET_PROC_SUFFIX(FlushMappedBufferRange, EXT);
    }

    if (extensions.has("GL_EXT_debug_marker")) {
        GET_PROC(InsertEventMarker);
        GET_PROC(PushGroupMarker);
        GET_PROC(PopGroupMarker);
        // The below check is here because a device has been found that has the extension string but
        // returns nullptr from the eglGetProcAddress for the functions
        if (nullptr == functions->fInsertEventMarker ||
            nullptr == functions->fPushGroupMarker ||
            nullptr == functions->fPopGroupMarker) {
            extensions.remove("GL_EXT_debug_marker");
        }
    }

    GET_PROC(InvalidateFramebuffer);
    GET_PROC(InvalidateSubFramebuffer);
    GET_PROC(InvalidateBufferData);
    GET_PROC(InvalidateBufferSubData);
    GET_PROC(InvalidateTexImage);
    GET_PROC(InvalidateTexSubImage);

    if (version >= GR_GL_VER(3,1)) {
        GET_PROC(GetProgramResourceLocation);
    }

    if (extensions.has("GL_NV_path_rendering")) {
        GET_PROC_SUFFIX(MatrixLoadf, EXT);
        GET_PROC_SUFFIX(MatrixLoadIdentity, EXT);
        GET_PROC_SUFFIX(PathCommands, NV);
        GET_PROC_SUFFIX(PathParameteri, NV);
        GET_PROC_SUFFIX(PathParameterf, NV);
        GET_PROC_SUFFIX(GenPaths, NV);
        GET_PROC_SUFFIX(DeletePaths, NV);
        GET_PROC_SUFFIX(IsPath, NV);
        GET_PROC_SUFFIX(PathStencilFunc, NV);
        GET_PROC_SUFFIX(StencilFillPath, NV);
        GET_PROC_SUFFIX(StencilStrokePath, NV);
        GET_PROC_SUFFIX(StencilFillPathInstanced, NV);
        GET_PROC_SUFFIX(StencilStrokePathInstanced, NV);
        GET_PROC_SUFFIX(CoverFillPath, NV);
        GET_PROC_SUFFIX(CoverStrokePath, NV);
        GET_PROC_SUFFIX(CoverFillPathInstanced, NV);
        GET_PROC_SUFFIX(CoverStrokePathInstanced, NV);
        GET_PROC_SUFFIX(StencilThenCoverFillPath, NV);
        GET_PROC_SUFFIX(StencilThenCoverStrokePath, NV);
        GET_PROC_SUFFIX(StencilThenCoverFillPathInstanced, NV);
        GET_PROC_SUFFIX(StencilThenCoverStrokePathInstanced, NV);
        GET_PROC_SUFFIX(ProgramPathFragmentInputGen, NV);
    }

    if (extensions.has("GL_CHROMIUM_path_rendering")) {
        GET_PROC_SUFFIX(MatrixLoadf, CHROMIUM);
        GET_PROC_SUFFIX(MatrixLoadIdentity, CHROMIUM);
        GET_PROC_SUFFIX(PathCommands, CHROMIUM);
        GET_PROC_SUFFIX(PathParameteri, CHROMIUM);
        GET_PROC_SUFFIX(PathParameterf, CHROMIUM);
        GET_PROC_SUFFIX(GenPaths, CHROMIUM);
        GET_PROC_SUFFIX(DeletePaths, CHROMIUM);
        GET_PROC_SUFFIX(IsPath, CHROMIUM);
        GET_PROC_SUFFIX(PathStencilFunc, CHROMIUM);
        GET_PROC_SUFFIX(StencilFillPath, CHROMIUM);
        GET_PROC_SUFFIX(StencilStrokePath, CHROMIUM);
        GET_PROC_SUFFIX(StencilFillPathInstanced, CHROMIUM);
        GET_PROC_SUFFIX(StencilStrokePathInstanced, CHROMIUM);
        GET_PROC_SUFFIX(CoverFillPath, CHROMIUM);
        GET_PROC_SUFFIX(CoverStrokePath, CHROMIUM);
        GET_PROC_SUFFIX(CoverFillPathInstanced, CHROMIUM);
        GET_PROC_SUFFIX(CoverStrokePathInstanced, CHROMIUM);
        GET_PROC_SUFFIX(StencilThenCoverFillPath, CHROMIUM);
        GET_PROC_SUFFIX(StencilThenCoverStrokePath, CHROMIUM);
        GET_PROC_SUFFIX(StencilThenCoverFillPathInstanced, CHROMIUM);
        GET_PROC_SUFFIX(StencilThenCoverStrokePathInstanced, CHROMIUM);
        GET_PROC_SUFFIX(ProgramPathFragmentInputGen, CHROMIUM);
        // GL_CHROMIUM_path_rendering additions:
        GET_PROC_SUFFIX(BindFragmentInputLocation, CHROMIUM);
    }

    if (extensions.has("GL_NV_framebuffer_mixed_samples")) {
        GET_PROC_SUFFIX(CoverageModulation, NV);
    }
    if (extensions.has("GL_CHROMIUM_framebuffer_mixed_samples")) {
        GET_PROC_SUFFIX(CoverageModulation, CHROMIUM);
    }

    if (extensions.has("GL_EXT_multi_draw_indirect")) {
        GET_PROC_SUFFIX(MultiDrawArraysIndirect, EXT);
        GET_PROC_SUFFIX(MultiDrawElementsIndirect, EXT);
    }

    if (extensions.has("GL_NV_bindless_texture")) {
        GET_PROC_SUFFIX(GetTextureHandle, NV);
        GET_PROC_SUFFIX(GetTextureSamplerHandle, NV);
        GET_PROC_SUFFIX(MakeTextureHandleResident, NV);
        GET_PROC_SUFFIX(MakeTextureHandleNonResident, NV);
        GET_PROC_SUFFIX(GetImageHandle, NV);
        GET_PROC_SUFFIX(MakeImageHandleResident, NV);
        GET_PROC_SUFFIX(MakeImageHandleNonResident, NV);
        GET_PROC_SUFFIX(IsTextureHandleResident, NV);
        GET_PROC_SUFFIX(IsImageHandleResident, NV);
        GET_PROC_SUFFIX(UniformHandleui64, NV);
        GET_PROC_SUFFIX(UniformHandleui64v, NV);
        GET_PROC_SUFFIX(ProgramUniformHandleui64, NV);
        GET_PROC_SUFFIX(ProgramUniformHandleui64v, NV);
    }

    if (extensions.has("GL_KHR_debug")) {
        GET_PROC_SUFFIX(DebugMessageControl, KHR);
        GET_PROC_SUFFIX(DebugMessageInsert, KHR);
        GET_PROC_SUFFIX(DebugMessageCallback, KHR);
        GET_PROC_SUFFIX(GetDebugMessageLog, KHR);
        GET_PROC_SUFFIX(PushDebugGroup, KHR);
        GET_PROC_SUFFIX(PopDebugGroup, KHR);
        GET_PROC_SUFFIX(ObjectLabel, KHR);
        // In general we have a policy against removing extension strings when the driver does
        // not provide function pointers for an advertised extension. However, because there is a
        // known device that advertises GL_KHR_debug but fails to provide the functions and this is
        // a debugging- only extension we've made an exception. This also can happen when using
        // APITRACE.
        if (!interface->fFunctions.fDebugMessageControl) {
            extensions.remove("GL_KHR_debug");
        }
    }

    if (extensions.has("GL_CHROMIUM_bind_uniform_location")) {
        GET_PROC_SUFFIX(BindUniformLocation, CHROMIUM);
    }

    if (extensions.has("EGL_KHR_image") || extensions.has("EGL_KHR_image_base")) {
        GET_EGL_PROC_SUFFIX(CreateImage, KHR);
        GET_EGL_PROC_SUFFIX(DestroyImage, KHR);
    }

    interface->fStandard = kGLES_GrGLStandard;
    interface->fExtensions.swap(&extensions);

    return interface;
}
Example #2
0
const GrGLInterface* GrGLAssembleGLESInterface(void* ctx, GrGLGetProc get) {
    GET_PROC_LOCAL(GetString);
    if (NULL == GetString) {
        return NULL;
    }

    const char* verStr = reinterpret_cast<const char*>(GetString(GR_GL_VERSION));
    GrGLVersion version = GrGLGetVersionFromString(verStr);

    if (version < GR_GL_VER(2,0)) {
        return NULL;
    }

    GET_PROC_LOCAL(GetIntegerv);
    GET_PROC_LOCAL(GetStringi);
    GrGLExtensions extensions;
    if (!extensions.init(kGLES_GrGLStandard, GetString, GetStringi, GetIntegerv)) {
        return NULL;
    }

    GrGLInterface* interface = SkNEW(GrGLInterface);
    GrGLInterface::Functions* functions = &interface->fFunctions;

    GET_PROC(ActiveTexture);
    GET_PROC(AttachShader);
    GET_PROC(BindAttribLocation);
    GET_PROC(BindBuffer);
    GET_PROC(BindTexture);
    GET_PROC_SUFFIX(BindVertexArray, OES);
    GET_PROC(BlendColor);
    GET_PROC(BlendFunc);
    GET_PROC(BufferData);
    GET_PROC(BufferSubData);
    GET_PROC(Clear);
    GET_PROC(ClearColor);
    GET_PROC(ClearStencil);
    GET_PROC(ColorMask);
    GET_PROC(CompileShader);
    GET_PROC(CompressedTexImage2D);
    GET_PROC(CompressedTexSubImage2D);
    GET_PROC(CopyTexSubImage2D);
    GET_PROC(CreateProgram);
    GET_PROC(CreateShader);
    GET_PROC(CullFace);
    GET_PROC(DeleteBuffers);
    GET_PROC(DeleteProgram);
    GET_PROC(DeleteShader);
    GET_PROC(DeleteTextures);
    GET_PROC_SUFFIX(DeleteVertexArrays, OES);
    GET_PROC(DepthMask);
    GET_PROC(Disable);
    GET_PROC(DisableVertexAttribArray);
    GET_PROC(DrawArrays);
    GET_PROC(DrawElements);
    GET_PROC(Enable);
    GET_PROC(EnableVertexAttribArray);
    GET_PROC(Finish);
    GET_PROC(Flush);
    GET_PROC(FrontFace);
    GET_PROC(GenBuffers);
    GET_PROC(GenerateMipmap);
    GET_PROC(GenTextures);
    GET_PROC_SUFFIX(GenVertexArrays, OES);
    GET_PROC(GetBufferParameteriv);
    GET_PROC(GetError);
    GET_PROC(GetIntegerv);
    GET_PROC(GetProgramInfoLog);
    GET_PROC(GetProgramiv);
    GET_PROC(GetShaderInfoLog);
    GET_PROC(GetShaderiv);
    GET_PROC(GetString);
    GET_PROC(GetStringi);
    GET_PROC(GetUniformLocation);
    GET_PROC(LineWidth);
    GET_PROC(LinkProgram);
    GET_PROC(PixelStorei);
    GET_PROC(ReadPixels);
    GET_PROC(Scissor);
    GET_PROC(ShaderSource);
    GET_PROC(StencilFunc);
    GET_PROC(StencilFuncSeparate);
    GET_PROC(StencilMask);
    GET_PROC(StencilMaskSeparate);
    GET_PROC(StencilOp);
    GET_PROC(StencilOpSeparate);
    GET_PROC(TexImage2D);
    GET_PROC(TexParameteri);
    GET_PROC(TexParameteriv);
    GET_PROC(TexSubImage2D);

    if (version >= GR_GL_VER(3,0)) {
        GET_PROC(TexStorage2D);
    } else {
        GET_PROC_SUFFIX(TexStorage2D, EXT);
    }

    GET_PROC_SUFFIX(DiscardFramebuffer, EXT);
    GET_PROC(Uniform1f);
    GET_PROC(Uniform1i);
    GET_PROC(Uniform1fv);
    GET_PROC(Uniform1iv);
    GET_PROC(Uniform2f);
    GET_PROC(Uniform2i);
    GET_PROC(Uniform2fv);
    GET_PROC(Uniform2iv);
    GET_PROC(Uniform3f);
    GET_PROC(Uniform3i);
    GET_PROC(Uniform3fv);
    GET_PROC(Uniform3iv);
    GET_PROC(Uniform4f);
    GET_PROC(Uniform4i);
    GET_PROC(Uniform4fv);
    GET_PROC(Uniform4iv);
    GET_PROC(UniformMatrix2fv);
    GET_PROC(UniformMatrix3fv);
    GET_PROC(UniformMatrix4fv);
    GET_PROC(UseProgram);
    GET_PROC(VertexAttrib1f);
    GET_PROC(VertexAttrib2fv);
    GET_PROC(VertexAttrib3fv);
    GET_PROC(VertexAttrib4fv);
    GET_PROC(VertexAttribPointer);
    GET_PROC(Viewport);
    GET_PROC(BindFramebuffer);
    GET_PROC(BindRenderbuffer);
    GET_PROC(CheckFramebufferStatus);
    GET_PROC(DeleteFramebuffers);
    GET_PROC(DeleteRenderbuffers);
    GET_PROC(FramebufferRenderbuffer);
    GET_PROC(FramebufferTexture2D);

    if (version >= GR_GL_VER(3,0)) {
        GET_PROC(RenderbufferStorageMultisample);
        GET_PROC(BlitFramebuffer);
    }

    if (extensions.has("GL_EXT_multisampled_render_to_texture")) {
        GET_PROC_SUFFIX(FramebufferTexture2DMultisample, EXT);
        functions->fRenderbufferStorageMultisampleES2EXT = (GrGLRenderbufferStorageMultisampleProc) get(ctx, "glRenderbufferStorageMultisampleEXT");
    } else if (extensions.has("GL_IMG_multisampled_render_to_texture")) {
        GET_PROC_SUFFIX(FramebufferTexture2DMultisample, IMG);
        functions->fRenderbufferStorageMultisampleES2EXT = (GrGLRenderbufferStorageMultisampleProc) get(ctx, "glRenderbufferStorageMultisampleIMG");
    } else if (extensions.has("GL_APPLE_framebuffer_multisample")) {
        functions->fRenderbufferStorageMultisampleES2APPLE = (GrGLRenderbufferStorageMultisampleProc) get(ctx, "glRenderbufferStorageMultisampleAPPLE");
        GET_PROC_SUFFIX(ResolveMultisampleFramebuffer, APPLE);
    }

    GET_PROC(GenFramebuffers);
    GET_PROC(GenRenderbuffers);
    GET_PROC(GetFramebufferAttachmentParameteriv);
    GET_PROC(GetRenderbufferParameteriv);
    GET_PROC(RenderbufferStorage);

    GET_PROC_SUFFIX(MapBuffer, OES);
    GET_PROC_SUFFIX(UnmapBuffer, OES);

    if (version >= GR_GL_VER(3,0)) {
        GET_PROC(MapBufferRange);
        GET_PROC(FlushMappedBufferRange);
    } else if (extensions.has("GL_EXT_map_buffer_range")) {
        GET_PROC_SUFFIX(MapBufferRange, EXT);
        GET_PROC_SUFFIX(FlushMappedBufferRange, EXT);
    }

    if (extensions.has("GL_EXT_debug_marker")) {
        GET_PROC(InsertEventMarker);
        GET_PROC(PushGroupMarker);
        GET_PROC(PopGroupMarker);
        // The below check is here because a device has been found that has the extension string but
        // returns NULL from the eglGetProcAddress for the functions
        if (NULL == functions->fInsertEventMarker ||
            NULL == functions->fPushGroupMarker ||
            NULL == functions->fPopGroupMarker) {
            extensions.remove("GL_EXT_debug_marker");
        }
    }

    GET_PROC(InvalidateFramebuffer);
    GET_PROC(InvalidateSubFramebuffer);
    GET_PROC(InvalidateBufferData);
    GET_PROC(InvalidateBufferSubData);
    GET_PROC(InvalidateTexImage);
    GET_PROC(InvalidateTexSubImage);

    if (version >= GR_GL_VER(3,1)) {
        GET_PROC(GetProgramResourceLocation);
    }

    if (extensions.has("GL_NV_path_rendering")) {
        GET_PROC_SUFFIX(MatrixLoadf, EXT);
        GET_PROC_SUFFIX(MatrixLoadIdentity, EXT);
        GET_PROC_SUFFIX(PathCommands, NV);
        GET_PROC_SUFFIX(PathCoords, NV);
        GET_PROC_SUFFIX(PathParameteri, NV);
        GET_PROC_SUFFIX(PathParameterf, NV);
        GET_PROC_SUFFIX(GenPaths, NV);
        GET_PROC_SUFFIX(DeletePaths, NV);
        GET_PROC_SUFFIX(IsPath, NV);
        GET_PROC_SUFFIX(PathStencilFunc, NV);
        GET_PROC_SUFFIX(StencilFillPath, NV);
        GET_PROC_SUFFIX(StencilStrokePath, NV);
        GET_PROC_SUFFIX(StencilFillPathInstanced, NV);
        GET_PROC_SUFFIX(StencilStrokePathInstanced, NV);
        GET_PROC_SUFFIX(CoverFillPath, NV);
        GET_PROC_SUFFIX(CoverStrokePath, NV);
        GET_PROC_SUFFIX(CoverFillPathInstanced, NV);
        GET_PROC_SUFFIX(CoverStrokePathInstanced, NV);
        GET_PROC_SUFFIX(StencilThenCoverFillPath, NV);
        GET_PROC_SUFFIX(StencilThenCoverStrokePath, NV);
        GET_PROC_SUFFIX(StencilThenCoverFillPathInstanced, NV);
        GET_PROC_SUFFIX(StencilThenCoverStrokePathInstanced, NV);
        GET_PROC_SUFFIX(ProgramPathFragmentInputGen, NV);
        GET_PROC_SUFFIX(PathMemoryGlyphIndexArray, NV);
    }

    interface->fStandard = kGLES_GrGLStandard;
    interface->fExtensions.swap(&extensions);

    return interface;
}