Refugee from Dead Machine 4: MDB Monster

gm/texdata.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 test only works with the GPU backend.
 
 #include "gm.h"
 
 #if SK_SUPPORT_GPU
 #include "GrContext.h"
 #include "GrDrawContext.h"
 #include "SkColorPriv.h"
 #include "effects/GrPorterDuffXferProcessor.h"
 #include "effects/GrSimpleTextureEffect.h"
 
 static const int S = 200;
 
 DEF_SIMPLE_GM_BG(texdata, canvas, 2 * S, 2 * S, SK_ColorBLACK) {
         GrRenderTarget* target = canvas->internal_private_accessTopLayerRenderTarget();
         GrContext* ctx = canvas->getGrContext();
+        if (!ctx) {
+            skiagm::GM::DrawGpuOnlyMessage(canvas);
+            return;        
+        }
         SkAutoTUnref<GrDrawContext> drawContext(ctx ? ctx->drawContext(target) : nullptr);
         if (drawContext && target) {
             SkAutoTArray<SkPMColor> gTextureData((2 * S) * (2 * S));
             static const int stride = 2 * S;
             static const SkPMColor gray  = SkPackARGB32(0x40, 0x40, 0x40, 0x40);
             static const SkPMColor white = SkPackARGB32(0xff, 0xff, 0xff, 0xff);
             static const SkPMColor red   = SkPackARGB32(0x80, 0x80, 0x00, 0x00);
             static const SkPMColor blue  = SkPackARGB32(0x80, 0x00, 0x00, 0x80);
             static const SkPMColor green = SkPackARGB32(0x80, 0x00, 0x80, 0x00);
             static const SkPMColor black = SkPackARGB32(0x00, 0x00, 0x00, 0x00);
@@ skipping 35 matching lines @@
                 desc.fWidth     = 2 * S;
                 desc.fHeight    = 2 * S;
                 GrTexture* texture = ctx->textureProvider()->createTexture(
                     desc, false, gTextureData.get(), 0);
 
                 if (!texture) {
                     return;
                 }
                 SkAutoTUnref<GrTexture> au(texture);
 
+                SkASSERT(texture->fromRawPixels2());
+
+                SkAutoTUnref<GrDrawContext> dc9;
+                if (i) {
+                    texture->setFromRawPixels(false);
+                    dc9.reset(ctx->drawContext(texture->asRenderTarget()));
+                    if (!dc9) {
+                        return;
+                    }
+                } else {
+                    texture->setException(true);
+                }
+
                 // setup new clip
                 GrClip clip(SkRect::MakeWH(2*S, 2*S));
 
                 GrPaint paint;
                 paint.setPorterDuffXPFactory(SkXfermode::kSrcOver_Mode);
 
                 SkMatrix vm;
                 if (i) {
                     vm.setRotate(90 * SK_Scalar1,
                                  S * SK_Scalar1,
                                  S * SK_Scalar1);
                 } else {
                     vm.reset();
                 }
                 SkMatrix tm;
                 tm = vm;
                 tm.postIDiv(2*S, 2*S);
-                paint.addColorTextureProcessor(texture, tm);
+                paint.addColorTextureProcessor(texture, tm, target);
 
                 drawContext->drawRect(clip, paint, vm, SkRect::MakeWH(2*S, 2*S));
 
+#if 0
+                // Here we've used dc9/texture as a src for a drawRect. This "closed"
+                // the DT. We need to reopen it here so we can use dc9/texture for
+                // the writePixels
+                if (dc9) {
+                    dc9 = ctx->drawContext(texture->asRenderTarget());
+                }
+#endif
+
                 // now update the lower right of the texture in first pass
                 // or upper right in second pass
                 offset = 0;
                 for (int y = 0; y < S; ++y) {
                     for (int x = 0; x < S; ++x) {
                         gTextureData[offset + y * stride + x] =
                             ((x + y) % 2) ? (i ? green : red) : blue;
                     }
                 }
-                texture->writePixels(S, (i ? 0 : S), S, S,
+                texture->writePixels(dc9, S, (i ? 0 : S), S, S,
                                      texture->config(), gTextureData.get(),
                                      4 * stride);
                 drawContext->drawRect(clip, paint, vm, SkRect::MakeWH(2*S, 2*S));
             }
-        } else {
-            skiagm::GM::DrawGpuOnlyMessage(canvas);
         }
 }
 #endif