move program descriptor generation to flush

src/gpu/GrOptDrawState.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrOptDrawState.h"
 
 #include "GrDrawState.h"
 #include "GrDrawTargetCaps.h"
 #include "GrGpu.h"
 #include "GrProcOptInfo.h"
 
 GrOptDrawState::GrOptDrawState(const GrDrawState& drawState,
-                               GrGpu* gpu,
+                               const GrDrawTargetCaps& caps,
                                const ScissorState& scissorState,
                                const GrDeviceCoordTexture* dstCopy,
-                               GrGpu::DrawType drawType) {
-
+                               GrGpu::DrawType drawType)
+    : fFinalized(false) {
+    fDrawType = drawType;
     GrBlendCoeff optSrcCoeff;
     GrBlendCoeff optDstCoeff;
     GrDrawState::BlendOpt blendOpt = drawState.getBlendOpt(false, &optSrcCoeff, &optDstCoeff);
 
     // When path rendering the stencil settings are not always set on the draw state
     // so we must check the draw type. In cases where we will skip drawing we simply return a
     // null GrOptDrawState.
     if (GrDrawState::kSkipDraw_BlendOpt == blendOpt && GrGpu::kStencilPath_DrawType != drawType) {
         // Set the fields that don't default init and return. The lack of a render target will
         // indicate that this can be skipped.
@@ skipping 14 matching lines @@
     fStencilSettings = drawState.getStencil();
     fDrawFace = drawState.getDrawFace();
     fSrcBlend = optSrcCoeff;
     fDstBlend = optDstCoeff;
 
     // TODO move this out of optDrawState
     if (dstCopy) {
         fDstCopy = *dstCopy;
     }
 
-    GrProgramDesc::DescInfo descInfo;
-
     fFlags = 0;
     if (drawState.isHWAntialias()) {
         fFlags |= kHWAA_Flag;
     }
     if (drawState.isColorWriteDisabled()) {
         fFlags |= kDisableColorWrite_Flag;
     }
     if (drawState.isDither()) {
         fFlags |= kDither_Flag;
     }
 
-    descInfo.fHasVertexColor = drawState.hasGeometryProcessor() &&
-                               drawState.getGeometryProcessor()->hasVertexColor();
+    fDescInfo.fHasVertexColor = drawState.hasGeometryProcessor() &&
+                                drawState.getGeometryProcessor()->hasVertexColor();
 
-    descInfo.fHasVertexCoverage = drawState.hasGeometryProcessor() &&
-                                 drawState.getGeometryProcessor()->hasVertexCoverage();
+    fDescInfo.fHasVertexCoverage = drawState.hasGeometryProcessor() &&
+                                   drawState.getGeometryProcessor()->hasVertexCoverage();
 
     bool hasLocalCoords = drawState.hasGeometryProcessor() &&
                           drawState.getGeometryProcessor()->hasLocalCoords();
 
     const GrProcOptInfo& colorPOI = drawState.colorProcInfo();
     int firstColorStageIdx = colorPOI.firstEffectiveStageIndex();
-    descInfo.fInputColorIsUsed = colorPOI.inputColorIsUsed();
+    fDescInfo.fInputColorIsUsed = colorPOI.inputColorIsUsed();
     fColor = colorPOI.inputColorToEffectiveStage();
     if (colorPOI.removeVertexAttrib()) {
-        descInfo.fHasVertexColor = false;
+        fDescInfo.fHasVertexColor = false;
     }
 
     // TODO: Once we can handle single or four channel input into coverage stages then we can use
     // drawState's coverageProcInfo (like color above) to set this initial information.
     int firstCoverageStageIdx = 0;
-    descInfo.fInputCoverageIsUsed = true;
+    fDescInfo.fInputCoverageIsUsed = true;
     fCoverage = drawState.getCoverage();
 
-    this->adjustProgramForBlendOpt(drawState, blendOpt, &descInfo, &firstColorStageIdx,
+    this->adjustProgramForBlendOpt(drawState, blendOpt, &firstColorStageIdx,
                                    &firstCoverageStageIdx);
 
-    this->getStageStats(drawState, firstColorStageIdx, firstCoverageStageIdx, hasLocalCoords,
-                        &descInfo);
+    this->getStageStats(drawState, firstColorStageIdx, firstCoverageStageIdx, hasLocalCoords);
 
     // Copy GeometryProcesssor from DS or ODS
     SkASSERT(GrGpu::IsPathRenderingDrawType(drawType) ||
              GrGpu::kStencilPath_DrawType ||
              drawState.hasGeometryProcessor());
     fGeometryProcessor.reset(drawState.getGeometryProcessor());
 
     // Create XferProcessor from DS's XPFactory
     const GrXferProcessor* xpProcessor = drawState.getXPFactory()->createXferProcessor();
     fXferProcessor.reset(xpProcessor);
     xpProcessor->unref();
 
     // Copy Stages from DS to ODS
     for (int i = firstColorStageIdx; i < drawState.numColorStages(); ++i) {
         SkNEW_APPEND_TO_TARRAY(&fFragmentStages,
                                GrPendingFragmentStage,
                                (drawState.fColorStages[i], hasLocalCoords));
     }
     fNumColorStages = fFragmentStages.count();
     for (int i = firstCoverageStageIdx; i < drawState.numCoverageStages(); ++i) {
         SkNEW_APPEND_TO_TARRAY(&fFragmentStages,
                                GrPendingFragmentStage,
                                (drawState.fCoverageStages[i], hasLocalCoords));
     }
 
-    this->setOutputStateInfo(drawState, blendOpt, *gpu->caps(), &descInfo);
-
-    // now create a key
-    gpu->buildProgramDesc(*this, descInfo, drawType, &fDesc);
+    this->setOutputStateInfo(drawState, blendOpt, caps);
 };
 
 void GrOptDrawState::setOutputStateInfo(const GrDrawState& ds,
                                         GrDrawState::BlendOpt blendOpt,
-                                        const GrDrawTargetCaps& caps,
-                                        GrProgramDesc::DescInfo* descInfo) {
+                                        const GrDrawTargetCaps& caps) {
     // Set this default and then possibly change our mind if there is coverage.
-    descInfo->fPrimaryOutputType = GrProgramDesc::kModulate_PrimaryOutputType;
-    descInfo->fSecondaryOutputType = GrProgramDesc::kNone_SecondaryOutputType;
+    fDescInfo.fPrimaryOutputType = GrProgramDesc::kModulate_PrimaryOutputType;
+    fDescInfo.fSecondaryOutputType = GrProgramDesc::kNone_SecondaryOutputType;
 
     // Determine whether we should use dual source blending or shader code to keep coverage
     // separate from color.
     bool keepCoverageSeparate = !(GrDrawState::kCoverageAsAlpha_BlendOpt == blendOpt ||
                                   GrDrawState::kEmitCoverage_BlendOpt == blendOpt);
     if (keepCoverageSeparate && !ds.hasSolidCoverage()) {
         if (caps.dualSourceBlendingSupport()) {
             if (kZero_GrBlendCoeff == fDstBlend) {
                 // write the coverage value to second color
-                descInfo->fSecondaryOutputType = GrProgramDesc::kCoverage_SecondaryOutputType;
+                fDescInfo.fSecondaryOutputType = GrProgramDesc::kCoverage_SecondaryOutputType;
                 fDstBlend = (GrBlendCoeff)GrGpu::kIS2C_GrBlendCoeff;
             } else if (kSA_GrBlendCoeff == fDstBlend) {
                 // SA dst coeff becomes 1-(1-SA)*coverage when dst is partially covered.
-                descInfo->fSecondaryOutputType = GrProgramDesc::kCoverageISA_SecondaryOutputType;
+                fDescInfo.fSecondaryOutputType = GrProgramDesc::kCoverageISA_SecondaryOutputType;
                 fDstBlend = (GrBlendCoeff)GrGpu::kIS2C_GrBlendCoeff;
             } else if (kSC_GrBlendCoeff == fDstBlend) {
                 // SA dst coeff becomes 1-(1-SA)*coverage when dst is partially covered.
-                descInfo->fSecondaryOutputType = GrProgramDesc::kCoverageISC_SecondaryOutputType;
+                fDescInfo.fSecondaryOutputType = GrProgramDesc::kCoverageISC_SecondaryOutputType;
                 fDstBlend = (GrBlendCoeff)GrGpu::kIS2C_GrBlendCoeff;
             }
-        } else if (descInfo->fReadsDst &&
+        } else if (fDescInfo.fReadsDst &&
                    kOne_GrBlendCoeff == fSrcBlend &&
                    kZero_GrBlendCoeff == fDstBlend) {
-            descInfo->fPrimaryOutputType = GrProgramDesc::kCombineWithDst_PrimaryOutputType;
+            fDescInfo.fPrimaryOutputType = GrProgramDesc::kCombineWithDst_PrimaryOutputType;
         }
     }
 }
 
 void GrOptDrawState::adjustProgramForBlendOpt(const GrDrawState& ds,
                                               GrDrawState::BlendOpt blendOpt,
-                                              GrProgramDesc::DescInfo* descInfo,
                                               int* firstColorStageIdx,
                                               int* firstCoverageStageIdx) {
     switch (blendOpt) {
         case GrDrawState::kNone_BlendOpt:
         case GrDrawState::kSkipDraw_BlendOpt:
         case GrDrawState::kCoverageAsAlpha_BlendOpt:
             break;
         case GrDrawState::kEmitCoverage_BlendOpt:
             fColor = 0xffffffff;
-            descInfo->fInputColorIsUsed = true;
+            fDescInfo.fInputColorIsUsed = true;
             *firstColorStageIdx = ds.numColorStages();
-            descInfo->fHasVertexColor = false;
+            fDescInfo.fHasVertexColor = false;
             break;
         case GrDrawState::kEmitTransBlack_BlendOpt:
             fColor = 0;
             fCoverage = 0xff;
-            descInfo->fInputColorIsUsed = true;
-            descInfo->fInputCoverageIsUsed = true;
+            fDescInfo.fInputColorIsUsed = true;
+            fDescInfo.fInputCoverageIsUsed = true;
             *firstColorStageIdx = ds.numColorStages();
             *firstCoverageStageIdx = ds.numCoverageStages();
-            descInfo->fHasVertexColor = false;
-            descInfo->fHasVertexCoverage = false;
+            fDescInfo.fHasVertexColor = false;
+            fDescInfo.fHasVertexCoverage = false;
             break;
     }
 }
 
 static void get_stage_stats(const GrFragmentStage& stage, bool* readsDst, bool* readsFragPosition) {
     if (stage.getProcessor()->willReadDstColor()) {
         *readsDst = true;
     }
     if (stage.getProcessor()->willReadFragmentPosition()) {
         *readsFragPosition = true;
     }
 }
 
 void GrOptDrawState::getStageStats(const GrDrawState& ds, int firstColorStageIdx,
-                                   int firstCoverageStageIdx, bool hasLocalCoords,
-                                   GrProgramDesc::DescInfo* descInfo) {
+                                   int firstCoverageStageIdx, bool hasLocalCoords) {
     // We will need a local coord attrib if there is one currently set on the optState and we are
     // actually generating some effect code
-    descInfo->fRequiresLocalCoordAttrib = hasLocalCoords &&
+    fDescInfo.fRequiresLocalCoordAttrib = hasLocalCoords &&
         ds.numTotalStages() - firstColorStageIdx - firstCoverageStageIdx > 0;
 
-    descInfo->fReadsDst = false;
-    descInfo->fReadsFragPosition = false;
+    fDescInfo.fReadsDst = false;
+    fDescInfo.fReadsFragPosition = false;
 
     for (int s = firstColorStageIdx; s < ds.numColorStages(); ++s) {
         const GrFragmentStage& stage = ds.getColorStage(s);
-        get_stage_stats(stage, &descInfo->fReadsDst, &descInfo->fReadsFragPosition);
+        get_stage_stats(stage, &fDescInfo.fReadsDst, &fDescInfo.fReadsFragPosition);
     }
     for (int s = firstCoverageStageIdx; s < ds.numCoverageStages(); ++s) {
         const GrFragmentStage& stage = ds.getCoverageStage(s);
-        get_stage_stats(stage, &descInfo->fReadsDst, &descInfo->fReadsFragPosition);
+        get_stage_stats(stage, &fDescInfo.fReadsDst, &fDescInfo.fReadsFragPosition);
     }
     if (ds.hasGeometryProcessor()) {
         const GrGeometryProcessor& gp = *ds.getGeometryProcessor();
-        descInfo->fReadsFragPosition = descInfo->fReadsFragPosition || gp.willReadFragmentPosition();
+        fDescInfo.fReadsFragPosition = fDescInfo.fReadsFragPosition || gp.willReadFragmentPosition();
     }
 }
 
+void GrOptDrawState::finalize(GrGpu* gpu) {
+    gpu->buildProgramDesc(*this, fDescInfo, fDrawType, &fDesc);
+    fFinalized = true;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 
 bool GrOptDrawState::operator== (const GrOptDrawState& that) const {
-    if (this->fDesc != that.fDesc) {
+    if (fDescInfo != that.fDescInfo) {
         return false;
     }
-    bool hasVertexColors = this->fDesc.header().fColorInput == GrProgramDesc::kAttribute_ColorInput;
-    if (!hasVertexColors && this->fColor != that.fColor) {
+
+    if (!fDescInfo.fHasVertexColor && this->fColor != that.fColor) {
         return false;
     }
 
     if (this->getRenderTarget() != that.getRenderTarget() ||
+        this->fFragmentStages.count() != that.fFragmentStages.count() ||
+        this->fNumColorStages != that.fNumColorStages ||
         this->fScissorState != that.fScissorState ||
         !this->fViewMatrix.cheapEqualTo(that.fViewMatrix) ||
         this->fSrcBlend != that.fSrcBlend ||
         this->fDstBlend != that.fDstBlend ||
+        this->fDrawType != that.fDrawType ||
         this->fBlendConstant != that.fBlendConstant ||
         this->fFlags != that.fFlags ||
         this->fStencilSettings != that.fStencilSettings ||
         this->fDrawFace != that.fDrawFace ||
         this->fDstCopy.texture() != that.fDstCopy.texture()) {
         return false;
     }
 
-    bool hasVertexCoverage =
-            this->fDesc.header().fCoverageInput == GrProgramDesc::kAttribute_ColorInput;
-    if (!hasVertexCoverage && this->fCoverage != that.fCoverage) {
+    if (!fDescInfo.fHasVertexCoverage && this->fCoverage != that.fCoverage) {
         return false;
     }
 
     if (this->hasGeometryProcessor()) {
         if (!that.hasGeometryProcessor()) {
             return false;
         } else if (!this->getGeometryProcessor()->isEqual(*that.getGeometryProcessor())) {
             return false;
         }
     } else if (that.hasGeometryProcessor()) {
         return false;
     }
 
     // The program desc comparison should have already assured that the stage counts match.
     SkASSERT(this->numFragmentStages() == that.numFragmentStages());
     for (int i = 0; i < this->numFragmentStages(); i++) {
 
         if (this->getFragmentStage(i) != that.getFragmentStage(i)) {
             return false;
         }
     }
     return true;
 }