Fix GrProgramsTest to not generate tests with too many TexCoord references

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
 
@@ skipping 140 matching lines @@
         GrPrintf("\nTest Program %d\n-------------\n", t);
         static const int stop = -1;
         if (t == stop) {
             int breakpointhere = 9;
         }
 #endif
 
         GrGLProgramDesc pdesc;
 
         int currAttribIndex = 1;  // we need to always leave room for position
+        int currTextureCoordSet = 0;
         int attribIndices[2];
         GrTexture* dummyTextures[] = {dummyTexture1.get(), dummyTexture2.get()};
 
         int numStages = random.nextULessThan(maxStages + 1);
         int numColorStages = random.nextULessThan(numStages + 1);
         int numCoverageStages = numStages - numColorStages;
 
         SkAutoSTMalloc<8, const GrEffectStage*> stages(numStages);
 
-        for (int s = 0; s < numStages; ++s) {
+        bool useFixedFunctionTexturing = this->shouldUseFixedFunctionTexturing();
+
+        for (int s = 0; s < numStages;) {
             SkAutoTUnref<const GrEffectRef> effect(GrEffectTestFactory::CreateStage(
                                                                             &random,
                                                                             this->getContext(),
                                                                             *this->caps(),
                                                                             dummyTextures));
             int numAttribs = (*effect)->numVertexAttribs();
 
             // If adding this effect would exceed the max attrib count then generate a
             // new random effect.
             if (currAttribIndex + numAttribs > GrDrawState::kMaxVertexAttribCnt) {
-                --s;
                 continue;
             }
+
+
+            // If adding this effect would exceed the max texture coord set count then generate a
+            // new random effect.
+            if (useFixedFunctionTexturing && !(*effect)->hasVertexCode()) {
+                int numTransforms = (*effect)->numTransforms();
+                if (currTextureCoordSet + numTransforms > this->glCaps().maxFixedFunctionTextureCoords()) {
+                    continue;
+                }
+                currTextureCoordSet += numTransforms;
+            }
+
+            useFixedFunctionTexturing = useFixedFunctionTexturing && !(*effect)->hasVertexCode();
+
             for (int i = 0; i < numAttribs; ++i) {
                 attribIndices[i] = currAttribIndex++;
             }
             GrEffectStage* stage = SkNEW_ARGS(GrEffectStage,
                                               (effect.get(), attribIndices[0], attribIndices[1]));
             stages[s] = stage;
+            ++s;
         }
         const GrTexture* dstTexture = random.nextBool() ? dummyTextures[0] : dummyTextures[1];
         pdesc.setRandom(&random,
                         this,
                         dummyTextures[0]->asRenderTarget(),
                         dstTexture,
                         stages.get(),
                         numColorStages,
                         numCoverageStages,
                         currAttribIndex);
@@ skipping 50 matching lines @@
     GrConfigConversionEffect::Create(NULL,
                                      false,
                                      GrConfigConversionEffect::kNone_PMConversion,
                                      SkMatrix::I());
     SkScalar matrix[20];
     SkColorMatrixFilter cmf(matrix);
     SkBitmapAlphaThresholdShader::Create(SkBitmap(), SkRegion(), 0x80);
 }
 
 #endif