Fix GLPrograms test.

tests/GLProgramsTest.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 // This is a GPU-backend specific test. It relies on static intializers to work
 
 #include "SkTypes.h"
 
 #if SK_SUPPORT_GPU && SK_ALLOW_STATIC_GLOBAL_INITIALIZERS
 
 #include "gl/GrGpuGL.h"
 #include "GrBackendEffectFactory.h"
 #include "GrContextFactory.h"
 #include "GrDrawEffect.h"
 #include "effects/GrConfigConversionEffect.h"
 
 #include "SkRandom.h"
 #include "Test.h"
 
 void GrGLProgramDesc::setRandom(SkMWCRandom* random,
                                 const GrGpuGL* gpu,
+                                const GrTexture* dstTexture,
                                 const GrEffectStage stages[GrDrawState::kNumStages]) {
     fAttribBindings = 0;
     fEmitsPointSize = random->nextBool();
     fColorInput = random->nextULessThan(kColorInputCnt);
     fCoverageInput = random->nextULessThan(kColorInputCnt);
 
     fColorFilterXfermode = random->nextULessThan(SkXfermode::kCoeffModesCnt);
 
     fFirstCoverageStage = random->nextULessThan(GrDrawState::kNumStages);
 
     fAttribBindings |= random->nextBool() ? GrDrawState::kCoverage_AttribBindingsBit : 0;
 
 #if GR_GL_EXPERIMENTAL_GS
     fExperimentalGS = gpu->caps()->geometryShaderSupport() && random->nextBool();
 #endif
 
     fDiscardIfZeroCoverage = random->nextBool();
 
     if (gpu->caps()->dualSourceBlendingSupport()) {
         fDualSrcOutput = random->nextULessThan(kDualSrcOutputCnt);
     } else {
         fDualSrcOutput = kNone_DualSrcOutput;
     }
 
     // use separate tex coords?
     if (random->nextBool()) {
         fAttribBindings |= GrDrawState::kLocalCoords_AttribBindingsBit;
     }
 
+    bool dstRead = false;
     for (int s = 0; s < GrDrawState::kNumStages; ++s) {
         if (NULL != stages[s].getEffect()) {
             const GrBackendEffectFactory& factory = (*stages[s].getEffect())->getFactory();
             bool explicitLocalCoords = (fAttribBindings &
                                         GrDrawState::kLocalCoords_AttribBindingsBit);
             GrDrawEffect drawEffect(stages[s], explicitLocalCoords);
             fEffectKeys[s] = factory.glEffectKey(drawEffect, gpu->glCaps());
+            if ((*stages[s].getEffect())->willReadDst()) {
+                dstRead = true;
+            }
         }
     }
 
+    if (dstRead) {
+        this->fDstRead = GrGLShaderBuilder::KeyForDstRead(dstTexture, gpu->glCaps());
+    }
+
     int attributeIndex = 0;
     fPositionAttributeIndex = attributeIndex;
     ++attributeIndex;
     if (fColorInput || (fAttribBindings & GrDrawState::kColor_AttribBindingsBit)) {
         fColorAttributeIndex = attributeIndex;
         ++attributeIndex;
     }
     if (fCoverageInput || (fAttribBindings & GrDrawState::kCoverage_AttribBindingsBit)) {
         fCoverageAttributeIndex = attributeIndex;
         ++attributeIndex;
@@ skipping 29 matching lines @@
         if (t == stop) {
             int breakpointhere = 9;
         }
 #endif
 
         GrGLProgramDesc pdesc;
         GrEffectStage stages[GrDrawState::kNumStages];
 
         int currAttribIndex = GrDrawState::kAttribIndexCount;
         int attribIndices[2];
+        GrTexture* dummyTextures[] = {dummyTexture1.get(), dummyTexture2.get()};
         for (int s = 0; s < maxStages; ++s) {
             // enable the stage?
             if (random.nextBool()) {
-                GrTexture* dummyTextures[] = {dummyTexture1.get(), dummyTexture2.get()};
                 SkAutoTUnref<const GrEffectRef> effect(GrEffectTestFactory::CreateStage(
                                                                                 &random,
                                                                                 this->getContext(),
                                                                                 *this->caps(),
                                                                                 dummyTextures));
                 int numAttribs = (*effect)->numVertexAttribs();
 
                 // If adding this effect would cause to exceed the max attrib count then generate a
                 // new random effect. The explanation for why this check is correct is a bit
                 // convoluted and this code will be removed soon.
                 if (currAttribIndex + numAttribs > GrDrawState::kCoverageOverrideAttribIndexValue) {
                     --s;
                     continue;
                 }
                 for (int i = 0; i < numAttribs; ++i) {
                     attribIndices[i] = currAttribIndex++;
                 }
                 stages[s].setEffect(effect.get(), attribIndices[0], attribIndices[1]);
             }
         }
-        pdesc.setRandom(&random, this, stages);
+        const GrTexture* dstTexture = random.nextBool() ? dummyTextures[0] : dummyTextures[1];
+        pdesc.setRandom(&random, this, dstTexture, stages);
 
         const GrEffectStage* stagePtrs[GrDrawState::kNumStages];
         for (int s = 0; s < GrDrawState::kNumStages; ++s) {
             stagePtrs[s] = &stages[s];
         }
         SkAutoTUnref<GrGLProgram> program(GrGLProgram::Create(this->glContext(),
                                                               pdesc,
                                                               stagePtrs));
         if (NULL == program.get()) {
             return false;
@@ skipping 38 matching lines @@
     SkMagnifierImageFilter mag(SkRect::MakeWH(SK_Scalar1, SK_Scalar1), SK_Scalar1);
     GrConfigConversionEffect::Create(NULL,
                                      false,
                                      GrConfigConversionEffect::kNone_PMConversion,
                                      SkMatrix::I());
     SkScalar matrix[20];
     SkColorMatrixFilter cmf(matrix);
 }
 
 #endif