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Unified Diff: src/gpu/glsl/GrGLSLProgramDesc.cpp

Issue 2318523006: Merge GrGLSLProgramDesc into GrProgramDesc (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: update comments Created 4 years, 3 months ago
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Index: src/gpu/glsl/GrGLSLProgramDesc.cpp
diff --git a/src/gpu/glsl/GrGLSLProgramDesc.cpp b/src/gpu/glsl/GrGLSLProgramDesc.cpp
deleted file mode 100644
index c44759a5ef29613c7689d7987aa63d7b3b86d61d..0000000000000000000000000000000000000000
--- a/src/gpu/glsl/GrGLSLProgramDesc.cpp
+++ /dev/null
@@ -1,187 +0,0 @@
-/*
- * Copyright 2016 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-#include "GrGLSLProgramDesc.h"
-
-#include "GrProcessor.h"
-#include "GrPipeline.h"
-#include "GrRenderTargetPriv.h"
-#include "SkChecksum.h"
-#include "glsl/GrGLSLFragmentProcessor.h"
-#include "glsl/GrGLSLFragmentShaderBuilder.h"
-#include "glsl/GrGLSLCaps.h"
-
-static uint16_t sampler_key(GrSLType samplerType, GrPixelConfig config, GrShaderFlags visibility,
- const GrGLSLCaps& caps) {
- enum {
- kFirstSamplerType = kTexture2DSampler_GrSLType,
- kLastSamplerType = kTextureBufferSampler_GrSLType,
- kSamplerTypeKeyBits = 4
- };
- GR_STATIC_ASSERT(kLastSamplerType - kFirstSamplerType < (1 << kSamplerTypeKeyBits));
-
- SkASSERT((int)samplerType >= kFirstSamplerType && (int)samplerType <= kLastSamplerType);
- int samplerTypeKey = samplerType - kFirstSamplerType;
-
- return SkToU16(caps.configTextureSwizzle(config).asKey() |
- (samplerTypeKey << 8) |
- (caps.samplerPrecision(config, visibility) << (8 + kSamplerTypeKeyBits)));
-}
-
-static void add_sampler_keys(GrProcessorKeyBuilder* b, const GrProcessor& proc,
- const GrGLSLCaps& caps) {
- int numTextures = proc.numTextures();
- int numSamplers = numTextures + proc.numBuffers();
- // Need two bytes per key (swizzle, sampler type, and precision).
- int word32Count = (numSamplers + 1) / 2;
- if (0 == word32Count) {
- return;
- }
- uint16_t* k16 = SkTCast<uint16_t*>(b->add32n(word32Count));
- int i = 0;
- for (; i < numTextures; ++i) {
- const GrTextureAccess& access = proc.textureAccess(i);
- const GrTexture* tex = access.getTexture();
- k16[i] = sampler_key(tex->samplerType(), tex->config(), access.getVisibility(), caps);
- }
- for (; i < numSamplers; ++i) {
- const GrBufferAccess& access = proc.bufferAccess(i - numTextures);
- k16[i] = sampler_key(kTextureBufferSampler_GrSLType, access.texelConfig(),
- access.visibility(), caps);
- }
- // zero the last 16 bits if the number of samplers is odd.
- if (numSamplers & 0x1) {
- k16[numSamplers] = 0;
- }
-}
-
-/**
- * A function which emits a meta key into the key builder. This is required because shader code may
- * be dependent on properties of the effect that the effect itself doesn't use
- * in its key (e.g. the pixel format of textures used). So we create a meta-key for
- * every effect using this function. It is also responsible for inserting the effect's class ID
- * which must be different for every GrProcessor subclass. It can fail if an effect uses too many
- * transforms, etc, for the space allotted in the meta-key. NOTE, both FPs and GPs share this
- * function because it is hairy, though FPs do not have attribs, and GPs do not have transforms
- */
-static bool gen_meta_key(const GrProcessor& proc,
- const GrGLSLCaps& glslCaps,
- uint32_t transformKey,
- GrProcessorKeyBuilder* b) {
- size_t processorKeySize = b->size();
- uint32_t classID = proc.classID();
-
- // Currently we allow 16 bits for the class id and the overall processor key size.
- static const uint32_t kMetaKeyInvalidMask = ~((uint32_t)SK_MaxU16);
- if ((processorKeySize | classID) & kMetaKeyInvalidMask) {
- return false;
- }
-
- add_sampler_keys(b, proc, glslCaps);
-
- uint32_t* key = b->add32n(2);
- key[0] = (classID << 16) | SkToU32(processorKeySize);
- key[1] = transformKey;
- return true;
-}
-
-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 GrGLSLProgramDescBuilder::Build(GrProgramDesc* desc,
- const GrPrimitiveProcessor& primProc,
- const GrPipeline& pipeline,
- const GrGLSLCaps& glslCaps) {
- // 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.
-
- GrGLSLProgramDesc* glDesc = (GrGLSLProgramDesc*)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.getGLSLProcessorKey(glslCaps, &b);
- if (!gen_meta_key(primProc, glslCaps, 0, &b)) {
- glDesc->key().reset();
- return false;
- }
- GrProcessor::RequiredFeatures requiredFeatures = primProc.requiredFeatures();
-
- for (int i = 0; i < pipeline.numFragmentProcessors(); ++i) {
- const GrFragmentProcessor& fp = pipeline.getFragmentProcessor(i);
- if (!gen_frag_proc_and_meta_keys(primProc, fp, glslCaps, &b)) {
- glDesc->key().reset();
- return false;
- }
- requiredFeatures |= fp.requiredFeatures();
- }
-
- const GrXferProcessor& xp = pipeline.getXferProcessor();
- xp.getGLSLProcessorKey(glslCaps, &b);
- if (!gen_meta_key(xp, glslCaps, 0, &b)) {
- glDesc->key().reset();
- return false;
- }
- requiredFeatures |= xp.requiredFeatures();
-
- // --------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);
-
- GrRenderTarget* rt = pipeline.getRenderTarget();
-
- if (requiredFeatures & (GrProcessor::kFragmentPosition_RequiredFeature |
- GrProcessor::kSampleLocations_RequiredFeature)) {
- header->fSurfaceOriginKey = GrGLSLFragmentShaderBuilder::KeyForSurfaceOrigin(rt->origin());
- } else {
- header->fSurfaceOriginKey = 0;
- }
-
- if (requiredFeatures & GrProcessor::kSampleLocations_RequiredFeature) {
- SkASSERT(pipeline.isHWAntialiasState());
- header->fSamplePatternKey =
- rt->renderTargetPriv().getMultisampleSpecs(pipeline.getStencil()).fUniqueID;
- } else {
- header->fSamplePatternKey = 0;
- }
-
- header->fOutputSwizzle = glslCaps.configOutputSwizzle(rt->config()).asKey();
-
- if (pipeline.ignoresCoverage()) {
- header->fIgnoresCoverage = 1;
- } else {
- header->fIgnoresCoverage = 0;
- }
-
- header->fSnapVerticesToPixelCenters = pipeline.snapVerticesToPixelCenters();
- header->fColorEffectCnt = pipeline.numColorFragmentProcessors();
- header->fCoverageEffectCnt = pipeline.numCoverageFragmentProcessors();
- glDesc->finalize();
- return true;
-}
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