michael@0: 
michael@0: /*
michael@0:  * Copyright 2011 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: 
michael@0: #include "GrRenderTarget.h"
michael@0: 
michael@0: #include "GrContext.h"
michael@0: #include "GrGpu.h"
michael@0: #include "GrStencilBuffer.h"
michael@0: 
michael@0: bool GrRenderTarget::readPixels(int left, int top, int width, int height,
michael@0:                                 GrPixelConfig config,
michael@0:                                 void* buffer,
michael@0:                                 size_t rowBytes,
michael@0:                                 uint32_t pixelOpsFlags) {
michael@0:     // go through context so that all necessary flushing occurs
michael@0:     GrContext* context = this->getContext();
michael@0:     if (NULL == context) {
michael@0:         return false;
michael@0:     }
michael@0:     return context->readRenderTargetPixels(this,
michael@0:                                            left, top, width, height,
michael@0:                                            config, buffer, rowBytes,
michael@0:                                            pixelOpsFlags);
michael@0: }
michael@0: 
michael@0: void GrRenderTarget::writePixels(int left, int top, int width, int height,
michael@0:                                  GrPixelConfig config,
michael@0:                                  const void* buffer,
michael@0:                                  size_t rowBytes,
michael@0:                                  uint32_t pixelOpsFlags) {
michael@0:     // go through context so that all necessary flushing occurs
michael@0:     GrContext* context = this->getContext();
michael@0:     if (NULL == context) {
michael@0:         return;
michael@0:     }
michael@0:     context->writeRenderTargetPixels(this,
michael@0:                                      left, top, width, height,
michael@0:                                      config, buffer, rowBytes,
michael@0:                                      pixelOpsFlags);
michael@0: }
michael@0: 
michael@0: void GrRenderTarget::resolve() {
michael@0:     // go through context so that all necessary flushing occurs
michael@0:     GrContext* context = this->getContext();
michael@0:     if (NULL == context) {
michael@0:         return;
michael@0:     }
michael@0:     context->resolveRenderTarget(this);
michael@0: }
michael@0: 
michael@0: size_t GrRenderTarget::sizeInBytes() const {
michael@0:     size_t colorBits;
michael@0:     if (kUnknown_GrPixelConfig == fDesc.fConfig) {
michael@0:         colorBits = 32; // don't know, make a guess
michael@0:     } else {
michael@0:         colorBits = GrBytesPerPixel(fDesc.fConfig);
michael@0:     }
michael@0:     uint64_t size = fDesc.fWidth;
michael@0:     size *= fDesc.fHeight;
michael@0:     size *= colorBits;
michael@0:     size *= GrMax(1, fDesc.fSampleCnt);
michael@0:     return (size_t)(size / 8);
michael@0: }
michael@0: 
michael@0: void GrRenderTarget::flagAsNeedingResolve(const SkIRect* rect) {
michael@0:     if (kCanResolve_ResolveType == getResolveType()) {
michael@0:         if (NULL != rect) {
michael@0:             fResolveRect.join(*rect);
michael@0:             if (!fResolveRect.intersect(0, 0, this->width(), this->height())) {
michael@0:                 fResolveRect.setEmpty();
michael@0:             }
michael@0:         } else {
michael@0:             fResolveRect.setLTRB(0, 0, this->width(), this->height());
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: void GrRenderTarget::overrideResolveRect(const SkIRect rect) {
michael@0:     fResolveRect = rect;
michael@0:     if (fResolveRect.isEmpty()) {
michael@0:         fResolveRect.setLargestInverted();
michael@0:     } else {
michael@0:         if (!fResolveRect.intersect(0, 0, this->width(), this->height())) {
michael@0:             fResolveRect.setLargestInverted();
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: void GrRenderTarget::setStencilBuffer(GrStencilBuffer* stencilBuffer) {
michael@0:     SkRefCnt_SafeAssign(fStencilBuffer, stencilBuffer);
michael@0: }
michael@0: 
michael@0: void GrRenderTarget::onRelease() {
michael@0:     this->setStencilBuffer(NULL);
michael@0: 
michael@0:     INHERITED::onRelease();
michael@0: }
michael@0: 
michael@0: void GrRenderTarget::onAbandon() {
michael@0:     this->setStencilBuffer(NULL);
michael@0: 
michael@0:     INHERITED::onAbandon();
michael@0: }