diff options
Diffstat (limited to 'src/gpu/GrXferProcessor.cpp')
-rw-r--r-- | src/gpu/GrXferProcessor.cpp | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/gpu/GrXferProcessor.cpp b/src/gpu/GrXferProcessor.cpp new file mode 100644 index 0000000000..87d5fe65ac --- /dev/null +++ b/src/gpu/GrXferProcessor.cpp @@ -0,0 +1,55 @@ +/* + * Copyright 2015 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "GrXferProcessor.h" +#include "gl/GrGLCaps.h" + +GrXferProcessor::GrXferProcessor() : fWillReadDstColor(false), fDstCopyTextureOffset() { +} + +GrXferProcessor::GrXferProcessor(const GrDeviceCoordTexture* dstCopy, bool willReadDstColor) + : fWillReadDstColor(willReadDstColor) + , fDstCopyTextureOffset() { + if (dstCopy && dstCopy->texture()) { + fDstCopy.reset(dstCopy->texture()); + fDstCopyTextureOffset = dstCopy->offset(); + SkASSERT(kTopLeft_GrSurfaceOrigin == fDstCopy.getTexture()->origin()); + this->addTextureAccess(&fDstCopy); + } +} + +void GrXferProcessor::getGLProcessorKey(const GrGLCaps& caps, GrProcessorKeyBuilder* b) const { + uint32_t key = this->willReadDstColor() ? 0x1 : 0x0; + b->add32(key); + this->onGetGLProcessorKey(caps, b); +} + +/////////////////////////////////////////////////////////////////////////////// + +GrXferProcessor* GrXPFactory::createXferProcessor(const GrProcOptInfo& colorPOI, + const GrProcOptInfo& coveragePOI, + const GrDeviceCoordTexture* dstCopy, + const GrDrawTargetCaps& caps) const { +#ifdef SK_DEBUG + if (this->willReadDstColor()) { + if (!caps.dstReadInShaderSupport()) { + SkASSERT(dstCopy && dstCopy->texture()); + } else { + SkASSERT(!dstCopy || !dstCopy->texture()); + } + } else { + SkASSERT(!dstCopy || !dstCopy->texture()); + + } +#endif + return this->onCreateXferProcessor(colorPOI, coveragePOI, dstCopy); +} + +bool GrXPFactory::willNeedDstCopy(const GrDrawTargetCaps& caps) const { + return (this->willReadDstColor() && !caps.dstReadInShaderSupport()); +} + |