Fix GrProgramsTest to not generate tests with too many TexCoord references

src/gpu/gl/GrGpuGL.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.
  */
 
 
 #include "GrGpuGL.h"
 #include "GrGLStencilBuffer.h"
@@ skipping 2090 matching lines @@
     GL_CALL(LoadMatrixf(glMatrix));
 }
 
 void GrGpuGL::enableTexGen(int unitIdx,
                            TexGenComponents components,
                            const GrGLfloat* coefficients) {
 
     SkASSERT(this->glCaps().fixedFunctionSupport());
     SkASSERT(this->caps()->pathRenderingSupport());
     SkASSERT(components >= kS_TexGenComponents && components <= kSTR_TexGenComponents);
+    SkASSERT(this->glCaps().maxFixedFunctionTextureCoords() >= unitIdx);
 
     if (GR_GL_OBJECT_LINEAR == fHWTexGenSettings[unitIdx].fMode &&
         components == fHWTexGenSettings[unitIdx].fNumComponents &&
         !memcmp(coefficients, fHWTexGenSettings[unitIdx].fCoefficients,
                 3 * components * sizeof(GrGLfloat))) {
         return;
     }
 
     this->setTextureUnit(unitIdx);
 
@@ skipping 52 matching lines @@
         coefficients[7] = SkScalarToFloat(matrix[SkMatrix::kMPersp1]);
         coefficients[8] = SkScalarToFloat(matrix[SkMatrix::kMPersp2]);
     }
 
     enableTexGen(unitIdx, components, coefficients);
 }
 
 void GrGpuGL::disableUnusedTexGen(int numUsedTexCoordSets) {
 
     SkASSERT(this->glCaps().fixedFunctionSupport());
+    SkASSERT(this->glCaps().maxFixedFunctionTextureCoords() >= numUsedTexCoordSets);
 
     for (int i = numUsedTexCoordSets; i < fHWActiveTexGenSets; i++) {
         if (0 == fHWTexGenSettings[i].fNumComponents) {
             continue;
         }
 
         this->setTextureUnit(i);
         for (int j = 0; j < fHWTexGenSettings[i].fNumComponents; j++) {
             GL_CALL(Disable(GR_GL_TEXTURE_GEN_S + j));
         }
@@ skipping 482 matching lines @@
             this->setVertexArrayID(gpu, 0);
         }
         int attrCount = gpu->glCaps().maxVertexAttributes();
         if (fDefaultVertexArrayAttribState.count() != attrCount) {
             fDefaultVertexArrayAttribState.resize(attrCount);
         }
         attribState = &fDefaultVertexArrayAttribState;
     }
     return attribState;
 }