OptState owns program descriptor

src/gpu/gl/GrGLProgramDesc.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
+#include "GrGLProgramDesc.h"
 
-#include "gl/builders/GrGLFragmentShaderBuilder.h"
-#include "GrGLProgramDesc.h"
+#include "GrGLProcessor.h"
 #include "GrBackendProcessorFactory.h"
 #include "GrProcessor.h"
 #include "GrGpuGL.h"
 #include "GrOptDrawState.h"
-
 #include "SkChecksum.h"
+#include "gl/builders/GrGLFragmentShaderBuilder.h"
 
 /**
  * The key for an individual coord transform is made up of a matrix type and a bit that
  * indicates the source of the input coords.
  */
 enum {
     kMatrixTypeKeyBits   = 1,
     kMatrixTypeKeyMask   = (1 << kMatrixTypeKeyBits) - 1,
     kPositionCoords_Flag = (1 << kMatrixTypeKeyBits),
     kTransformKeyBits    = kMatrixTypeKeyBits + 1,
@@ skipping 146 matching lines @@
                             b, keySize);
     }
 };
 
 
 template <class ProcessorKeyBuilder>
 bool
 GrGLProgramDesc::BuildStagedProcessorKey(const typename ProcessorKeyBuilder::StagedProcessor& stage,
                                          const GrGLCaps& caps,
                                          bool requiresLocalCoordAttrib,
-                                         GrGLProgramDesc* desc,
+                                         GrProgramDesc* desc,
                                          int* offsetAndSizeIndex) {
     GrProcessorKeyBuilder b(&desc->fKey);
     uint16_t processorKeySize;
     uint32_t processorOffset = desc->fKey.count();
     if (processorOffset > SK_MaxU16 ||
             !ProcessorKeyBuilder::GetProcessorKey(stage, caps, requiresLocalCoordAttrib, &b,
                                                   &processorKeySize)){
         desc->fKey.reset();
         return false;
     }
 
     uint16_t* offsetAndSize =
             reinterpret_cast<uint16_t*>(desc->fKey.begin() + kEffectKeyOffsetsAndLengthOffset +
                                         *offsetAndSizeIndex * 2 * sizeof(uint16_t));
     offsetAndSize[0] = SkToU16(processorOffset);
     offsetAndSize[1] = processorKeySize;
     ++(*offsetAndSizeIndex);
     return true;
 }
 
 bool GrGLProgramDesc::Build(const GrOptDrawState& optState,
                             GrGpu::DrawType drawType,
                             GrGpuGL* gpu,
                             const GrDeviceCoordTexture* dstCopy,
-                            GrGLProgramDesc* desc) {
+                            GrProgramDesc* desc) {
     bool inputColorIsUsed = optState.inputColorIsUsed();
     bool inputCoverageIsUsed = optState.inputCoverageIsUsed();
 
     // 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.
 
     bool requiresLocalCoordAttrib = optState.requiresLocalCoordAttrib();
 
@@ skipping 23 matching lines @@
                                                                   requiresLocalCoordAttrib,
                                                                   desc,
                                                                   &offsetAndSizeIndex)) {
             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 = desc->header();
+    GLKeyHeader* header = desc->atOffset<GLKeyHeader, kHeaderOffset>();
 
     // make sure any padding in the header is zeroed.
     memset(header, 0, kHeaderSize);
 
     header->fHasGeometryProcessor = optState.hasGeometryProcessor();
 
     header->fEmitsPointSize = GrGpu::kDrawPoints_DrawType == drawType;
 
     if (gpu->caps()->pathRenderingSupport() &&
         GrGpu::IsPathRenderingDrawType(drawType) &&
         gpu->glPathRendering()->texturingMode() == GrGLPathRendering::FixedFunction_TexturingMode) {
         header->fUseFragShaderOnly = true;
         SkASSERT(!optState.hasGeometryProcessor());
     } else {
         header->fUseFragShaderOnly = false;
     }
 
     bool defaultToUniformInputs = GrGpu::IsPathRenderingDrawType(drawType) ||
                                   GR_GL_NO_CONSTANT_ATTRIBUTES;
 
     if (!inputColorIsUsed) {
-        header->fColorInput = kAllOnes_ColorInput;
+        header->fColorInput = GrProgramDesc::kAllOnes_ColorInput;
     } else if (defaultToUniformInputs && !optState.hasColorVertexAttribute()) {
-        header->fColorInput = kUniform_ColorInput;
+        header->fColorInput = GrProgramDesc::kUniform_ColorInput;
     } else {
-        header->fColorInput = kAttribute_ColorInput;
+        header->fColorInput = GrProgramDesc::kAttribute_ColorInput;
         SkASSERT(!header->fUseFragShaderOnly);
     }
 
     bool covIsSolidWhite = !optState.hasCoverageVertexAttribute() &&
                            0xffffffff == optState.getCoverageColor();
 
     if (covIsSolidWhite || !inputCoverageIsUsed) {
-        header->fCoverageInput = kAllOnes_ColorInput;
+        header->fCoverageInput = GrProgramDesc::kAllOnes_ColorInput;
     } else if (defaultToUniformInputs && !optState.hasCoverageVertexAttribute()) {
-        header->fCoverageInput = kUniform_ColorInput;
+        header->fCoverageInput = GrProgramDesc::kUniform_ColorInput;
     } else {
-        header->fCoverageInput = kAttribute_ColorInput;
+        header->fCoverageInput = GrProgramDesc::kAttribute_ColorInput;
         SkASSERT(!header->fUseFragShaderOnly);
     }
 
     if (optState.readsDst()) {
         SkASSERT(dstCopy || gpu->caps()->dstReadInShaderSupport());
         const GrTexture* dstCopyTexture = NULL;
         if (dstCopy) {
             dstCopyTexture = dstCopy->texture();
         }
         header->fDstReadKey = GrGLFragmentShaderBuilder::KeyForDstRead(dstCopyTexture,
@@ skipping 12 matching lines @@
     }
 
     // Record attribute indices
     header->fPositionAttributeIndex = optState.positionAttributeIndex();
     header->fLocalCoordAttributeIndex = optState.localCoordAttributeIndex();
 
     // For constant color and coverage we need an attribute with an index beyond those already set
     int availableAttributeIndex = optState.getVertexAttribCount();
     if (optState.hasColorVertexAttribute()) {
         header->fColorAttributeIndex = optState.colorVertexAttributeIndex();
-    } else if (GrGLProgramDesc::kAttribute_ColorInput == header->fColorInput) {
+    } else if (GrProgramDesc::kAttribute_ColorInput == header->fColorInput) {
         SkASSERT(availableAttributeIndex < GrDrawState::kMaxVertexAttribCnt);
         header->fColorAttributeIndex = availableAttributeIndex;
         availableAttributeIndex++;
     } else {
         header->fColorAttributeIndex = -1;
     }
 
     if (optState.hasCoverageVertexAttribute()) {
         header->fCoverageAttributeIndex = optState.coverageVertexAttributeIndex();
-    } else if (GrGLProgramDesc::kAttribute_ColorInput == header->fCoverageInput) {
+    } else if (GrProgramDesc::kAttribute_ColorInput == header->fCoverageInput) {
         SkASSERT(availableAttributeIndex < GrDrawState::kMaxVertexAttribCnt);
         header->fCoverageAttributeIndex = availableAttributeIndex;
     } else {
         header->fCoverageAttributeIndex = -1;
     }
 
     header->fPrimaryOutputType = optState.getPrimaryOutputType();
     header->fSecondaryOutputType = optState.getSecondaryOutputType();
 
     header->fColorEffectCnt = optState.numColorStages();
     header->fCoverageEffectCnt = optState.numCoverageStages();
-    desc->finalize();
+    GrGLProgramDesc::Finalize(desc);
     return true;
 }
 
-void GrGLProgramDesc::finalize() {
-    int keyLength = fKey.count();
+void GrGLProgramDesc::Finalize(GrProgramDesc* desc) {

[bsalomon, 2014/10/23 18:10:30]

Should this be moved to GrProgramDesc (even if it is just a helper called by
this file)? Seems like it is backend api-neutral

+    int keyLength = desc->fKey.count();
     SkASSERT(0 == (keyLength % 4));
-    *this->atOffset<uint32_t, kLengthOffset>() = SkToU32(keyLength);
+    *(desc->atOffset<uint32_t, GrProgramDesc::kLengthOffset>()) = SkToU32(keyLength);
 
-    uint32_t* checksum = this->atOffset<uint32_t, kChecksumOffset>();
+    uint32_t* checksum = desc->atOffset<uint32_t, GrProgramDesc::kChecksumOffset>();
     *checksum = 0;
-    *checksum = SkChecksum::Compute(reinterpret_cast<uint32_t*>(fKey.begin()), keyLength);
+    *checksum = SkChecksum::Compute(reinterpret_cast<uint32_t*>(desc->fKey.begin()), keyLength);
 }
 
-GrGLProgramDesc& GrGLProgramDesc::operator= (const GrGLProgramDesc& other) {
-    size_t keyLength = other.keyLength();
-    fKey.reset(keyLength);
-    memcpy(fKey.begin(), other.fKey.begin(), keyLength);
-    return *this;
-}