1 /*
2 * Copyright 2016 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 "GrBitmapTextureMaker.h"
9
10 #include "GrContext.h"
11 #include "GrGpuResourcePriv.h"
12 #include "GrResourceProvider.h"
13 #include "SkBitmap.h"
14 #include "SkGr.h"
15 #include "SkPixelRef.h"
16
bmp_is_alpha_only(const SkBitmap & bm)17 static bool bmp_is_alpha_only(const SkBitmap& bm) { return kAlpha_8_SkColorType == bm.colorType(); }
18
GrBitmapTextureMaker(GrContext * context,const SkBitmap & bitmap)19 GrBitmapTextureMaker::GrBitmapTextureMaker(GrContext* context, const SkBitmap& bitmap)
20 : INHERITED(context, bitmap.width(), bitmap.height(), bmp_is_alpha_only(bitmap))
21 , fBitmap(bitmap) {
22 if (!bitmap.isVolatile()) {
23 SkIPoint origin = bitmap.pixelRefOrigin();
24 SkIRect subset = SkIRect::MakeXYWH(origin.fX, origin.fY, bitmap.width(),
25 bitmap.height());
26 GrMakeKeyFromImageID(&fOriginalKey, bitmap.pixelRef()->getGenerationID(), subset);
27 }
28 }
29
refOriginalTextureProxy(bool willBeMipped,SkColorSpace * dstColorSpace,AllowedTexGenType onlyIfFast)30 sk_sp<GrTextureProxy> GrBitmapTextureMaker::refOriginalTextureProxy(bool willBeMipped,
31 SkColorSpace* dstColorSpace,
32 AllowedTexGenType onlyIfFast) {
33 if (AllowedTexGenType::kCheap == onlyIfFast) {
34 return nullptr;
35 }
36
37 sk_sp<GrTextureProxy> proxy;
38
39 if (fOriginalKey.isValid()) {
40 proxy = this->context()->resourceProvider()->findProxyByUniqueKey(fOriginalKey);
41 if (proxy) {
42 return proxy;
43 }
44 }
45 if (willBeMipped) {
46 proxy = GrGenerateMipMapsAndUploadToTextureProxy(this->context(), fBitmap, dstColorSpace);
47 }
48 if (!proxy) {
49 proxy = GrUploadBitmapToTextureProxy(this->context()->resourceProvider(), fBitmap,
50 dstColorSpace);
51 }
52 if (proxy && fOriginalKey.isValid()) {
53 this->context()->resourceProvider()->assignUniqueKeyToProxy(fOriginalKey, proxy.get());
54 // MDB TODO (caching): this has to play nice with the GrSurfaceProxy's caching
55 GrInstallBitmapUniqueKeyInvalidator(fOriginalKey, fBitmap.pixelRef());
56 }
57 return proxy;
58 }
59
makeCopyKey(const CopyParams & copyParams,GrUniqueKey * copyKey,SkColorSpace * dstColorSpace)60 void GrBitmapTextureMaker::makeCopyKey(const CopyParams& copyParams, GrUniqueKey* copyKey,
61 SkColorSpace* dstColorSpace) {
62 // Destination color space is irrelevant - we always upload the bitmap's contents as-is
63 if (fOriginalKey.isValid()) {
64 MakeCopyKeyFromOrigKey(fOriginalKey, copyParams, copyKey);
65 }
66 }
67
didCacheCopy(const GrUniqueKey & copyKey)68 void GrBitmapTextureMaker::didCacheCopy(const GrUniqueKey& copyKey) {
69 GrInstallBitmapUniqueKeyInvalidator(copyKey, fBitmap.pixelRef());
70 }
71
alphaType() const72 SkAlphaType GrBitmapTextureMaker::alphaType() const {
73 return fBitmap.alphaType();
74 }
75
getColorSpace(SkColorSpace * dstColorSpace)76 sk_sp<SkColorSpace> GrBitmapTextureMaker::getColorSpace(SkColorSpace* dstColorSpace) {
77 // Color space doesn't depend on destination color space - it's just whatever is in the bitmap
78 return fBitmap.refColorSpace();
79 }
80