| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrRenderTargetProxy_DEFINED |
| #define GrRenderTargetProxy_DEFINED |
| |
| #include "GrRenderTarget.h" |
| #include "GrSurfaceProxy.h" |
| #include "GrTypes.h" |
| |
| class GrTextureProvider; |
| |
| // This class delays the acquisition of RenderTargets until they are actually |
| // required |
| // Beware: the uniqueID of the RenderTargetProxy will usually be different than |
| // the uniqueID of the RenderTarget it represents! |
| class GrRenderTargetProxy : virtual public GrSurfaceProxy { |
| public: |
| /** |
| * The caller gets the creation ref. |
| */ |
| static sk_sp<GrRenderTargetProxy> Make(const GrCaps&, const GrSurfaceDesc&, |
| SkBackingFit, SkBudgeted); |
| static sk_sp<GrRenderTargetProxy> Make(sk_sp<GrRenderTarget>); |
| |
| GrRenderTargetProxy* asRenderTargetProxy() override { return this; } |
| const GrRenderTargetProxy* asRenderTargetProxy() const override { return this; } |
| |
| // Actually instantiate the backing rendertarget, if necessary. |
| GrRenderTarget* instantiate(GrTextureProvider* texProvider); |
| |
| bool isStencilBufferMultisampled() const { return fDesc.fSampleCnt > 0; } |
| |
| /** |
| * For our purposes, "Mixed Sampled" means the stencil buffer is multisampled but the color |
| * buffer is not. |
| */ |
| bool isMixedSampled() const { return fFlags & GrRenderTarget::Flags::kMixedSampled; } |
| |
| /** |
| * "Unified Sampled" means the stencil and color buffers are both multisampled. |
| */ |
| bool isUnifiedMultisampled() const { return fDesc.fSampleCnt > 0 && !this->isMixedSampled(); } |
| |
| /** |
| * Returns the number of samples/pixel in the stencil buffer (Zero if non-MSAA). |
| */ |
| int numStencilSamples() const { return fDesc.fSampleCnt; } |
| |
| /** |
| * Returns the number of samples/pixel in the color buffer (Zero if non-MSAA or mixed sampled). |
| */ |
| int numColorSamples() const { return this->isMixedSampled() ? 0 : fDesc.fSampleCnt; } |
| |
| GrRenderTarget::Flags testingOnly_getFlags() const; |
| |
| GrRenderTargetOpList* getLastRenderTargetOpList() { |
| return (GrRenderTargetOpList*) this->getLastOpList(); |
| } |
| |
| SkDEBUGCODE(void validate(GrContext*) const;) |
| |
| protected: |
| // Deferred version |
| GrRenderTargetProxy(const GrCaps&, const GrSurfaceDesc&, SkBackingFit, SkBudgeted); |
| |
| // Wrapped version |
| GrRenderTargetProxy(sk_sp<GrRenderTarget> rt); |
| |
| private: |
| size_t onGpuMemorySize() const override; |
| |
| // For wrapped render targets the actual GrRenderTarget is stored in the GrIORefProxy class. |
| // For deferred proxies that pointer is filled in when we need to instantiate the |
| // deferred resource. |
| |
| // These don't usually get computed until the render target is instantiated, but the render |
| // target proxy may need to answer queries about it before then. And since in the deferred case |
| // we know the newly created render target will be internal, we are able to precompute what the |
| // flags will ultimately end up being. In the wrapped case we just copy the wrapped |
| // rendertarget's info here. |
| GrRenderTarget::Flags fFlags; |
| |
| typedef GrSurfaceProxy INHERITED; |
| }; |
| |
| #endif |