| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrDiscardOp_DEFINED |
| #define GrDiscardOp_DEFINED |
| |
| #include "GrGpu.h" |
| #include "GrOp.h" |
| #include "GrOpFlushState.h" |
| #include "GrRenderTarget.h" |
| |
| class GrDiscardOp final : public GrOp { |
| public: |
| DEFINE_OP_CLASS_ID |
| |
| // MDB TODO: replace the renderTargetContext with just the renderTargetProxy. |
| // For now, we need the renderTargetContext for its accessRenderTarget powers. |
| static std::unique_ptr<GrOp> Make(GrRenderTargetContext* rtc) { |
| |
| // MDB TODO: remove this. In this hybrid state we need to be sure the RT is instantiable |
| // so it can carry the IO refs. In the future we will just get the proxy and |
| // it carry the IO refs. |
| if (!rtc->accessRenderTarget()) { |
| return nullptr; |
| } |
| |
| return std::unique_ptr<GrOp>(new GrDiscardOp(rtc)); |
| } |
| |
| const char* name() const override { return "Discard"; } |
| |
| SkString dumpInfo() const override { |
| SkString string; |
| string.printf("rtID: %d proxyID: %d ", fRenderTarget.get()->uniqueID().asUInt(), |
| fProxyUniqueID.asUInt()); |
| string.append(INHERITED::dumpInfo()); |
| return string; |
| } |
| |
| private: |
| GrDiscardOp(GrRenderTargetContext* rtc) |
| : INHERITED(ClassID()) |
| , fProxyUniqueID(rtc->asSurfaceProxy()->uniqueID()) { |
| this->setBounds(SkRect::MakeIWH(rtc->width(), rtc->height()), HasAABloat::kNo, |
| IsZeroArea::kNo); |
| |
| fRenderTarget.reset(rtc->accessRenderTarget()); |
| } |
| |
| bool onCombineIfPossible(GrOp* that, const GrCaps& caps) override { |
| return fRenderTarget.get() == that->cast<GrDiscardOp>()->fRenderTarget.get(); |
| } |
| |
| void onPrepare(GrOpFlushState*) override {} |
| |
| void onExecute(GrOpFlushState* state) override { |
| // MDB TODO: instantiate the renderTarget from the proxy in here |
| state->commandBuffer()->discard(fRenderTarget.get()); |
| } |
| |
| // MDB TODO: remove this. When the renderTargetProxy carries the refs this will be redundant. |
| GrSurfaceProxy::UniqueID fProxyUniqueID; |
| GrPendingIOResource<GrRenderTarget, kWrite_GrIOType> fRenderTarget; |
| |
| typedef GrOp INHERITED; |
| }; |
| |
| #endif |