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Side by Side Diff: src/gpu/GrXferProcessor.cpp

Issue 901663007: Revert of Move DstCopy on gpu into the GrXferProcessor. (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Created 5 years, 10 months ago
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1 /*
2 * Copyright 2015 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 "GrXferProcessor.h"
9 #include "gl/GrGLCaps.h"
10
11 GrXferProcessor::GrXferProcessor() : fWillReadDstColor(false), fDstCopyTextureOf fset() {
12 }
13
14 GrXferProcessor::GrXferProcessor(const GrDeviceCoordTexture* dstCopy, bool willR eadDstColor)
15 : fWillReadDstColor(willReadDstColor)
16 , fDstCopyTextureOffset() {
17 if (dstCopy && dstCopy->texture()) {
18 fDstCopy.reset(dstCopy->texture());
19 fDstCopyTextureOffset = dstCopy->offset();
20 this->addTextureAccess(&fDstCopy);
21 }
22 }
23
24 void GrXferProcessor::getGLProcessorKey(const GrGLCaps& caps, GrProcessorKeyBuil der* b) const {
25 uint32_t key = this->willReadDstColor() ? 0x1 : 0x0;
26 if (this->getDstCopyTexture() &&
27 kTopLeft_GrSurfaceOrigin == this->getDstCopyTexture()->origin()) {
28 key |= 0x2;
29 }
30 b->add32(key);
31 this->onGetGLProcessorKey(caps, b);
32 }
33
34 ///////////////////////////////////////////////////////////////////////////////
35
36 GrXferProcessor* GrXPFactory::createXferProcessor(const GrProcOptInfo& colorPOI,
37 const GrProcOptInfo& coverageP OI,
38 const GrDeviceCoordTexture* ds tCopy,
39 const GrDrawTargetCaps& caps) const {
40 #ifdef SK_DEBUG
41 if (this->willReadDstColor()) {
42 if (!caps.dstReadInShaderSupport()) {
43 SkASSERT(dstCopy && dstCopy->texture());
44 } else {
45 SkASSERT(!dstCopy || !dstCopy->texture());
46 }
47 } else {
48 SkASSERT(!dstCopy || !dstCopy->texture());
49
50 }
51 #endif
52 return this->onCreateXferProcessor(colorPOI, coveragePOI, dstCopy);
53 }
54
55 bool GrXPFactory::willNeedDstCopy(const GrDrawTargetCaps& caps) const {
56 return (this->willReadDstColor() && !caps.dstReadInShaderSupport());
57 }
58
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