Make program unit test run clean and add it to tests program

Review URL: http://codereview.appspot.com/4898049/


git-svn-id: http://skia.googlecode.com/svn/trunk@2121 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/src/GrGLProgram.cpp b/gpu/src/GrGLProgram.cpp
index fe42855..4699851 100644
--- a/gpu/src/GrGLProgram.cpp
+++ b/gpu/src/GrGLProgram.cpp
@@ -1091,7 +1091,7 @@
         segments->fVSCode.appendf("\t%s -= vec2(%g, %g) * %s;\n",
                                   varyingName.c_str(), scale, scale,
                                   imageIncrementName.c_str());
-}
+    }
 
     /// Fragment Shader Stuff
     GrStringBuilder fsCoordName;
@@ -1265,17 +1265,32 @@
         segments->fFSCode.appendf("\t%s += %s(%s, %s + vec2(+%s.x,+%s.y))%s;\n", accumVar.c_str(), texFunc.c_str(), samplerName.c_str(), sampleCoords.c_str(), texelSizeName.c_str(), texelSizeName.c_str(), smear);
         segments->fFSCode.appendf("\t%s = .25 * %s%s;\n", fsOutColor, accumVar.c_str(), modulate.c_str());
     } else if (ProgramDesc::StageDesc::kConvolution_FetchMode == desc.fFetchMode) {
-        segments->fFSCode.append("\tvec4 sum = vec4(0, 0, 0, 0);\n");
-        segments->fFSCode.appendf("\tvec2 coord = %s;\n", sampleCoords.c_str());
-        segments->fFSCode.appendf("\tfor (int i = 0; i < %d; i++) {\n", desc.fKernelWidth);
-        segments->fFSCode.appendf("\t\tsum += %s(%s, coord)%s * %s[i];\n",
-                                  texFunc.c_str(), samplerName.c_str(),
-                                  smear, kernelName.c_str());
-        segments->fFSCode.appendf("\t\tcoord += %s;\n",
+        GrStringBuilder sumVar("sum");
+        sumVar.appendS32(stageNum);
+        GrStringBuilder coordVar("coord");
+        coordVar.appendS32(stageNum);
+
+        segments->fFSCode.appendf("\tvec4 %s = vec4(0, 0, 0, 0);\n",
+                                  sumVar.c_str());
+        segments->fFSCode.appendf("\tvec2 %s = %s;\n", 
+                                  coordVar.c_str(),
+                                  sampleCoords.c_str());
+        segments->fFSCode.appendf("\tfor (int i = 0; i < %d; i++) {\n",
+                                  desc.fKernelWidth);
+        segments->fFSCode.appendf("\t\t%s += %s(%s, %s)%s * %s[i];\n",
+                                  sumVar.c_str(), texFunc.c_str(),
+                                  samplerName.c_str(), coordVar.c_str(), smear,
+                                  kernelName.c_str());
+        segments->fFSCode.appendf("\t\t%s += %s;\n",
+                                  coordVar.c_str(),
                                   imageIncrementName.c_str());
         segments->fFSCode.appendf("\t}\n");
-        segments->fFSCode.appendf("\t%s = sum%s;\n", fsOutColor, modulate.c_str());
+        segments->fFSCode.appendf("\t%s = %s%s;\n", fsOutColor,
+                                  sumVar.c_str(), modulate.c_str());
     } else {
-        segments->fFSCode.appendf("\t%s = %s(%s, %s)%s%s;\n", fsOutColor, texFunc.c_str(), samplerName.c_str(), sampleCoords.c_str(), smear, modulate.c_str());
+        segments->fFSCode.appendf("\t%s = %s(%s, %s)%s%s;\n",
+                                  fsOutColor, texFunc.c_str(), 
+                                  samplerName.c_str(), sampleCoords.c_str(),
+                                  smear, modulate.c_str());
     }
 }
diff --git a/gpu/src/GrGpuGLShaders.cpp b/gpu/src/GrGpuGLShaders.cpp
index adac9b0..5afd77e 100644
--- a/gpu/src/GrGpuGLShaders.cpp
+++ b/gpu/src/GrGpuGLShaders.cpp
@@ -143,7 +143,7 @@
     }
 };
 
-void GrGpuGLShaders::ProgramUnitTest() {
+bool GrGpuGLShaders::programUnitTest() {
 
     static const int STAGE_OPTS[] = {
         0,
@@ -185,8 +185,13 @@
         idx = (int)(random.nextF() * (kNumStages+1));
         pdesc.fFirstCoverageStage = idx;
 
-        pdesc.fEdgeAANumEdges = (random.nextF() * (getMaxEdges() + 1));
-        pdesc.fEdgeAAConcave = random.nextF() > .5f;
+        bool edgeAA = random.nextF() > .5f;
+        if (edgeAA) {
+            pdesc.fEdgeAANumEdges = random.nextF() * this->getMaxEdges() + 1;
+            pdesc.fEdgeAAConcave = random.nextF() > .5f;
+        } else {
+            pdesc.fEdgeAANumEdges = 0;
+        }
 
         if (fDualSourceBlendingSupport) {
             pdesc.fDualSrcOutput =
@@ -217,10 +222,17 @@
             stage.fModulation = random_val(&random, StageDesc::kModulationCnt);
             stage.fCoordMapping =  random_val(&random, StageDesc::kCoordMappingCnt);
             stage.fFetchMode = random_val(&random, StageDesc::kFetchModeCnt);
+            // convolution shaders don't work with persp tex matrix
+            if (stage.fFetchMode == StageDesc::kConvolution_FetchMode) {
+                stage.fOptFlags |= StageDesc::kNoPerspective_OptFlagBit;
+            }
             stage.setEnabled(VertexUsesStage(s, pdesc.fVertexLayout));
+            stage.fKernelWidth = 4 * random.nextF() + 2;
         }
         CachedData cachedData;
-        program.genProgram(&cachedData);
+        if (!program.genProgram(&cachedData)) {
+            return false;
+        }
         DeleteProgram(&cachedData);
         bool again = false;
         if (again) {
@@ -228,6 +240,7 @@
             DeleteProgram(&cachedData);
         }
     }
+    return true;
 }
 
 GrGpuGLShaders::GrGpuGLShaders() {
@@ -247,7 +260,7 @@
     fProgramCache = new ProgramCache();
 
 #if 0
-    ProgramUnitTest();
+    this->programUnitTest();
 #endif
 }
 
diff --git a/gpu/src/GrGpuGLShaders.h b/gpu/src/GrGpuGLShaders.h
index eb3ee37..be6f64e 100644
--- a/gpu/src/GrGpuGLShaders.h
+++ b/gpu/src/GrGpuGLShaders.h
@@ -26,6 +26,8 @@
 
     virtual void abandonResources();
 
+    bool programUnitTest();
+
 protected:
     // overrides from GrGpu
     virtual bool flushGraphicsState(GrPrimitiveType type);
@@ -74,8 +76,6 @@
 
     static void DeleteProgram(CachedData* programData);
 
-    void ProgramUnitTest();
-
     void buildProgram(GrPrimitiveType type);
 
     ProgramCache*               fProgramCache;