static bool gen_frag_proc_and_meta_keys(const GrPrimitiveProcessor& primProc,
const GrFragmentProcessor& fp,
const GrGLSLCaps& glslCaps,
GrProcessorKeyBuilder* b) {
for (int i = 0; i < fp.numChildProcessors(); ++i) {
if (!gen_frag_proc_and_meta_keys(primProc, fp.childProcessor(i), glslCaps, b)) {
return false;
}
}
fp.getGLSLProcessorKey(glslCaps, b);
return gen_meta_key(fp, glslCaps, primProc.getTransformKey(fp.coordTransforms(),
fp.numTransformsExclChildren()), b);
}
bool GrGLProgramDescBuilder::Build(GrProgramDesc* desc,
const GrPrimitiveProcessor& primProc,
const GrPipeline& pipeline,
const GrGLGpu* gpu,
const GrBatchTracker& batchTracker) {
// The descriptor is used as a cache key. Thus when a field of the
// descriptor will not affect program generation (because of the attribute
// bindings in use or other descriptor field settings) it should be set
// to a canonical value to avoid duplicate programs with different keys.
GrGLProgramDesc* glDesc = (GrGLProgramDesc*) desc;
GR_STATIC_ASSERT(0 == kProcessorKeysOffset % sizeof(uint32_t));
// Make room for everything up to the effect keys.
glDesc->key().reset();
glDesc->key().push_back_n(kProcessorKeysOffset);
GrProcessorKeyBuilder b(&glDesc->key());
primProc.getGLProcessorKey(batchTracker, gpu->glCaps(), &b);
if (!get_meta_key(primProc, gpu->glCaps(), 0, &b)) {
glDesc->key().reset();
return false;
}
for (int s = 0; s < pipeline.numFragmentStages(); ++s) {
const GrPendingFragmentStage& fps = pipeline.getFragmentStage(s);
const GrFragmentProcessor& fp = *fps.processor();
fp.getGLProcessorKey(gpu->glCaps(), &b);
if (!get_meta_key(fp, gpu->glCaps(), primProc.getTransformKey(fp.coordTransforms()), &b)) {
glDesc->key().reset();
return false;
}
}
const GrXferProcessor& xp = *pipeline.getXferProcessor();
xp.getGLProcessorKey(gpu->glCaps(), &b);
if (!get_meta_key(xp, gpu->glCaps(), 0, &b)) {
glDesc->key().reset();
return false;
}
// --------DO NOT MOVE HEADER ABOVE THIS LINE--------------------------------------------------
// Because header is a pointer into the dynamic array, we can't push any new data into the key
// below here.
KeyHeader* header = glDesc->atOffset<KeyHeader, kHeaderOffset>();
// make sure any padding in the header is zeroed.
memset(header, 0, kHeaderSize);
if (pipeline.readsFragPosition()) {
header->fFragPosKey =
GrGLFragmentShaderBuilder::KeyForFragmentPosition(pipeline.getRenderTarget(),
gpu->glCaps());
} else {
header->fFragPosKey = 0;
}
header->fColorEffectCnt = pipeline.numColorFragmentStages();
header->fCoverageEffectCnt = pipeline.numCoverageFragmentStages();
glDesc->finalize();
return true;
}
