bool
GLLibraryEGL::ReadbackEGLImage(EGLImage image, gfx::DataSourceSurface* out_surface)
{
StaticMutexAutoUnlock lock(sMutex);
if (!mReadbackGL) {
nsCString discardFailureId;
mReadbackGL = gl::GLContextProvider::CreateHeadless(gl::CreateContextFlags::NONE,
&discardFailureId);
}
ScopedTexture destTex(mReadbackGL);
const GLuint target = mReadbackGL->GetPreferredEGLImageTextureTarget();
ScopedBindTexture autoTex(mReadbackGL, destTex.Texture(), target);
mReadbackGL->fTexParameteri(target, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE);
mReadbackGL->fTexParameteri(target, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE);
mReadbackGL->fTexParameteri(target, LOCAL_GL_TEXTURE_MAG_FILTER, LOCAL_GL_NEAREST);
mReadbackGL->fTexParameteri(target, LOCAL_GL_TEXTURE_MIN_FILTER, LOCAL_GL_NEAREST);
mReadbackGL->fEGLImageTargetTexture2D(target, image);
ShaderConfigOGL config = ShaderConfigFromTargetAndFormat(target,
out_surface->GetFormat());
int shaderConfig = config.mFeatures;
mReadbackGL->ReadTexImageHelper()->ReadTexImage(out_surface, 0, target,
out_surface->GetSize(), shaderConfig);
return true;
}
virtual ShaderProgramOGL* GetProgram(GLenum aTarget, gfx::SurfaceFormat aFormat) override
{
ShaderConfigOGL config = ShaderConfigFromTargetAndFormat(aTarget, aFormat);
return mImpl->GetShaderProgramFor(config);
}
