Refugee from Dead Machine 4: MDB Monster

src/gpu/effects/GrConfigConversionEffect.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrConfigConversionEffect.h"
 #include "GrContext.h"
 #include "GrDrawContext.h"
@@ skipping 82 matching lines @@
 
     typedef GrGLFragmentProcessor INHERITED;
 
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 GrConfigConversionEffect::GrConfigConversionEffect(GrTexture* texture,
                                                    bool swapRedAndBlue,
                                                    PMConversion pmConversion,
-                                                   const SkMatrix& matrix)
-    : INHERITED(texture, matrix)
+                                                   const SkMatrix& matrix, GrRenderTarget* dst)
+    : INHERITED(texture, matrix, kLocal_GrCoordSet, dst)
     , fSwapRedAndBlue(swapRedAndBlue)
     , fPMConversion(pmConversion) {
     this->initClassID<GrConfigConversionEffect>();
     // We expect to get here with non-BGRA/RGBA only if we're doing not doing a premul/unpremul
     // conversion.
     SkASSERT((kRGBA_8888_GrPixelConfig == texture->config() ||
               kBGRA_8888_GrPixelConfig == texture->config()) ||
               kNone_PMConversion == pmConversion);
     // Why did we pollute our texture cache instead of using a GrSingleTextureEffect?
     SkASSERT(swapRedAndBlue || kNone_PMConversion != pmConversion);
@@ skipping 15 matching lines @@
 
 const GrFragmentProcessor* GrConfigConversionEffect::TestCreate(GrProcessorTestData* d) {
     PMConversion pmConv = static_cast<PMConversion>(d->fRandom->nextULessThan(kPMConversionCnt));
     bool swapRB;
     if (kNone_PMConversion == pmConv) {
         swapRB = true;
     } else {
         swapRB = d->fRandom->nextBool();
     }
     return new GrConfigConversionEffect(d->fTextures[GrProcessorUnitTest::kSkiaPMTextureIdx],
-                                        swapRB, pmConv, GrTest::TestMatrix(d->fRandom));
+                                        swapRB, pmConv, GrTest::TestMatrix(d->fRandom), NULL);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void GrConfigConversionEffect::onGetGLProcessorKey(const GrGLSLCaps& caps,
                                                    GrProcessorKeyBuilder* b) const {
     GrGLConfigConversionEffect::GenKey(*this, caps, b);
 }
 
 GrGLFragmentProcessor* GrConfigConversionEffect::onCreateGLInstance() const {
     return new GrGLConfigConversionEffect(*this);
 }
 
 
+#include "GrDrawTarget.h"
 
 void GrConfigConversionEffect::TestForPreservingPMConversions(GrContext* context,
                                                               PMConversion* pmToUPMRule,
                                                               PMConversion* upmToPMRule) {
     *pmToUPMRule = kNone_PMConversion;
     *upmToPMRule = kNone_PMConversion;
     SkAutoTMalloc<uint32_t> data(256 * 256 * 3);
     uint32_t* srcData = data.get();
     uint32_t* firstRead = data.get() + 256 * 256;
     uint32_t* secondRead = data.get() + 2 * 256 * 256;
@@ skipping 17 matching lines @@
     desc.fConfig = kRGBA_8888_GrPixelConfig;
 
     SkAutoTUnref<GrTexture> readTex(context->textureProvider()->createTexture(desc, true, nullptr, 0));
     if (!readTex.get()) {
         return;
     }
     SkAutoTUnref<GrTexture> tempTex(context->textureProvider()->createTexture(desc, true, nullptr, 0));
     if (!tempTex.get()) {
         return;
     }
+
     desc.fFlags = kNone_GrSurfaceFlags;
     SkAutoTUnref<GrTexture> dataTex(context->textureProvider()->createTexture(desc, true, data, 0));
     if (!dataTex.get()) {
         return;
     }
 
+    dataTex->setException(true);
+
     static const PMConversion kConversionRules[][2] = {
         {kDivByAlpha_RoundDown_PMConversion, kMulByAlpha_RoundUp_PMConversion},
         {kDivByAlpha_RoundUp_PMConversion, kMulByAlpha_RoundDown_PMConversion},
     };
 
     bool failed = true;
 
+    SkAutoTUnref<GrDrawContext> readDrawContext;
+    SkAutoTUnref<GrDrawContext> tempDrawContext;
+
     for (size_t i = 0; i < SK_ARRAY_COUNT(kConversionRules) && failed; ++i) {
         *pmToUPMRule = kConversionRules[i][0];
         *upmToPMRule = kConversionRules[i][1];
 
         static const SkRect kDstRect = SkRect::MakeWH(SkIntToScalar(256), SkIntToScalar(256));
         static const SkRect kSrcRect = SkRect::MakeWH(SK_Scalar1, SK_Scalar1);
         // We do a PM->UPM draw from dataTex to readTex and read the data. Then we do a UPM->PM draw
         // from readTex to tempTex followed by a PM->UPM draw to readTex and finally read the data.
         // We then verify that two reads produced the same values.
 
         GrPaint paint1;
         GrPaint paint2;
         GrPaint paint3;
         SkAutoTUnref<GrFragmentProcessor> pmToUPM1(new GrConfigConversionEffect(
-                dataTex, false, *pmToUPMRule, SkMatrix::I()));
+                dataTex, false, *pmToUPMRule, SkMatrix::I(), readTex->asRenderTarget()));
         SkAutoTUnref<GrFragmentProcessor> upmToPM(new GrConfigConversionEffect(
-                readTex, false, *upmToPMRule, SkMatrix::I()));
+                readTex, false, *upmToPMRule, SkMatrix::I(), tempTex->asRenderTarget()));
         SkAutoTUnref<GrFragmentProcessor> pmToUPM2(new GrConfigConversionEffect(
-                tempTex, false, *pmToUPMRule, SkMatrix::I()));
+                tempTex, false, *pmToUPMRule, SkMatrix::I(), readTex->asRenderTarget()));
 
         paint1.addColorFragmentProcessor(pmToUPM1);
 
-
-        SkAutoTUnref<GrDrawContext> readDrawContext(
-                                    context->drawContext(readTex->asRenderTarget()));
+        readDrawContext.reset(context->drawContext(readTex->asRenderTarget()));
         if (!readDrawContext) {
-            failed = true;
-            break;
+            return;
         }
 
         readDrawContext->fillRectToRect(GrClip::WideOpen(),
                                         paint1,
                                         SkMatrix::I(),
                                         kDstRect,
                                         kSrcRect);
 
         readTex->readPixels(0, 0, 256, 256, kRGBA_8888_GrPixelConfig, firstRead);
 
         paint2.addColorFragmentProcessor(upmToPM);
 
-        SkAutoTUnref<GrDrawContext> tempDrawContext(
-                                    context->drawContext(tempTex->asRenderTarget()));
+        tempDrawContext.reset(context->drawContext(tempTex->asRenderTarget()));
         if (!tempDrawContext) {
-            failed = true;
-            break;
+            return;
         }
+
         tempDrawContext->fillRectToRect(GrClip::WideOpen(),
                                         paint2,
                                         SkMatrix::I(),
                                         kDstRect,
                                         kSrcRect);
 
         paint3.addColorFragmentProcessor(pmToUPM2);
 
+        SkASSERT(readDrawContext);
+
         readDrawContext.reset(context->drawContext(readTex->asRenderTarget()));
         if (!readDrawContext) {
-            failed = true;
-            break;
+            return;
         }
 
         readDrawContext->fillRectToRect(GrClip::WideOpen(),
                                         paint3,
                                         SkMatrix::I(),
                                         kDstRect,
                                         kSrcRect);
 
         readTex->readPixels(0, 0, 256, 256, kRGBA_8888_GrPixelConfig, secondRead);
 
         failed = false;
         for (int y = 0; y < 256 && !failed; ++y) {
             for (int x = 0; x <= y; ++x) {
                 if (firstRead[256 * y + x] != secondRead[256 * y + x]) {
                     failed = true;
                     break;
                 }
             }
         }
     }
     if (failed) {
         *pmToUPMRule = kNone_PMConversion;
         *upmToPMRule = kNone_PMConversion;
     }
 }
 
 const GrFragmentProcessor* GrConfigConversionEffect::Create(GrTexture* texture,
                                                             bool swapRedAndBlue,
                                                             PMConversion pmConversion,
-                                                            const SkMatrix& matrix) {
+                                                            const SkMatrix& matrix, GrRenderTarget* dst) {
     if (!swapRedAndBlue && kNone_PMConversion == pmConversion) {
         // If we returned a GrConfigConversionEffect that was equivalent to a GrSimpleTextureEffect
         // then we may pollute our texture cache with redundant shaders. So in the case that no
         // conversions were requested we instead return a GrSimpleTextureEffect.
-        return GrSimpleTextureEffect::Create(texture, matrix);
+        return GrSimpleTextureEffect::Create(texture, matrix, kLocal_GrCoordSet, dst);
     } else {
         if (kRGBA_8888_GrPixelConfig != texture->config() &&
             kBGRA_8888_GrPixelConfig != texture->config() &&
             kNone_PMConversion != pmConversion) {
             // The PM conversions assume colors are 0..255
             return nullptr;
         }
-        return new GrConfigConversionEffect(texture, swapRedAndBlue, pmConversion, matrix);
+        return new GrConfigConversionEffect(texture, swapRedAndBlue, pmConversion, matrix, dst);
     }
 }