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      1 /*
      2  * Copyright 2013 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "SkTypes.h"
      9 
     10 #if SK_SUPPORT_GPU
     11 
     12 #include "GrContext.h"
     13 #include "GrTexture.h"
     14 #include "GrTexturePriv.h"
     15 #include "SkCanvas.h"
     16 #include "SkGr.h"
     17 #include "SkSurface.h"
     18 #include "Test.h"
     19 
     20 // Tests that GrSurface::asTexture(), GrSurface::asRenderTarget(), and static upcasting of texture
     21 // and render targets to GrSurface all work as expected.
     22 DEF_GPUTEST_FOR_NULL_CONTEXT(GrTextureMipMapInvalidationTest, reporter, context) {
     23     GrSurfaceDesc desc;
     24     desc.fConfig = kSkia8888_GrPixelConfig;
     25     desc.fFlags = kRenderTarget_GrSurfaceFlag;
     26     desc.fWidth = 256;
     27     desc.fHeight = 256;
     28     desc.fSampleCnt = 0;
     29     GrSurface* texRT1 = context->textureProvider()->createTexture(
     30         desc, SkBudgeted::kNo, nullptr, 0);
     31     GrSurface* texRT2 = context->textureProvider()->createTexture(
     32         desc, SkBudgeted::kNo, nullptr, 0);
     33     REPORTER_ASSERT(reporter, nullptr != texRT1);
     34     REPORTER_ASSERT(reporter, nullptr != texRT2);
     35     GrTexture* tex = texRT1->asTexture();
     36     REPORTER_ASSERT(reporter, nullptr != tex);
     37     SkBitmap bitmap;
     38     GrWrapTextureInBitmap(tex, 256, 256, false, &bitmap);
     39 
     40     // No mipmaps initially
     41     REPORTER_ASSERT(reporter, false == tex->texturePriv().hasMipMaps());
     42 
     43     // Painting with downscale and medium filter quality should result in mipmap creation
     44     SkSurface* surface = SkSurface::NewRenderTargetDirect(texRT2->asRenderTarget());
     45     SkPaint paint;
     46     paint.setFilterQuality(kMedium_SkFilterQuality);
     47     surface->getCanvas()->scale(0.2f, 0.2f);
     48     surface->getCanvas()->drawBitmap(bitmap, 0, 0, &paint);
     49     context->flush();
     50 
     51     REPORTER_ASSERT(reporter, true == tex->texturePriv().hasMipMaps());
     52     REPORTER_ASSERT(reporter, false == tex->texturePriv().mipMapsAreDirty());
     53 
     54     // Invalidating the contents of the bitmap should invalidate the mipmap, but not de-allocate
     55     bitmap.notifyPixelsChanged();
     56     REPORTER_ASSERT(reporter, true == tex->texturePriv().hasMipMaps());
     57     REPORTER_ASSERT(reporter, true == tex->texturePriv().mipMapsAreDirty());
     58 
     59     surface->unref();
     60     texRT1->unref();
     61     texRT2->unref();
     62 }
     63 
     64 #endif
     65