1 /*
2 * Copyright 2012 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 "src/core/SkCompressedDataUtils.h"
9 #include "src/gpu/GrBackendUtils.h"
10 #include "src/gpu/GrRenderTarget.h"
11 #include "src/gpu/GrResourceProvider.h"
12 #include "src/gpu/GrSurface.h"
13 #include "src/gpu/GrTexture.h"
14
15 #include "src/core/SkMathPriv.h"
16 #include "src/gpu/SkGr.h"
17
ComputeSize(const GrBackendFormat & format,SkISize dimensions,int colorSamplesPerPixel,GrMipmapped mipMapped,bool binSize)18 size_t GrSurface::ComputeSize(const GrBackendFormat& format,
19 SkISize dimensions,
20 int colorSamplesPerPixel,
21 GrMipmapped mipMapped,
22 bool binSize) {
23 // For external formats we do not actually know the real size of the resource so we just return
24 // 0 here to indicate this.
25 if (format.textureType() == GrTextureType::kExternal) {
26 return 0;
27 }
28
29 size_t colorSize;
30
31 if (binSize) {
32 dimensions = GrResourceProvider::MakeApprox(dimensions);
33 }
34
35 SkImage::CompressionType compressionType = GrBackendFormatToCompressionType(format);
36 if (compressionType != SkImage::CompressionType::kNone) {
37 colorSize = SkCompressedFormatDataSize(compressionType, dimensions,
38 mipMapped == GrMipmapped::kYes);
39 } else {
40 colorSize = (size_t)dimensions.width() * dimensions.height() *
41 GrBackendFormatBytesPerPixel(format);
42 }
43 SkASSERT(colorSize > 0);
44
45 size_t finalSize = colorSamplesPerPixel * colorSize;
46
47 if (GrMipmapped::kYes == mipMapped) {
48 // We don't have to worry about the mipmaps being a different dimensions than
49 // we'd expect because we never change fDesc.fWidth/fHeight.
50 finalSize += colorSize/3;
51 }
52 return finalSize;
53 }
54
55 //////////////////////////////////////////////////////////////////////////////
56
onRelease()57 void GrSurface::onRelease() {
58 this->invokeReleaseProc();
59 this->INHERITED::onRelease();
60 }
61
onAbandon()62 void GrSurface::onAbandon() {
63 this->invokeReleaseProc();
64 this->INHERITED::onAbandon();
65 }
66