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.
DEF_GPUTEST_FOR_NULL_CONTEXT(GrTextureMipMapInvalidationTest,reporter,context)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