3c0a50f038
This reflects Dawn and Metal functionality. Implement a FramebufferOnly flag on GrSurface and GrBackendRenderTarget. Forward the state from GrBackendRenderTarget to GrSurface. Check the GrSurface flag in GrGpu::readPixels() and GrGpu::writePixels() and early-return. Change-Id: I27d3c9c912b366791bfd0e1db49638d8925742f3 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/262802 Reviewed-by: Greg Daniel <egdaniel@google.com> Reviewed-by: Mike Reed <reed@google.com> Commit-Queue: Stephen White <senorblanco@chromium.org>
160 lines
5.1 KiB
C++
160 lines
5.1 KiB
C++
/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef GrSurface_DEFINED
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#define GrSurface_DEFINED
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#include "include/core/SkImageInfo.h"
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#include "include/core/SkRect.h"
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#include "include/gpu/GrBackendSurface.h"
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#include "include/gpu/GrGpuResource.h"
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#include "include/gpu/GrTypes.h"
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class GrRenderTarget;
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class GrSurfacePriv;
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class GrTexture;
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class GrSurface : public GrGpuResource {
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public:
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/**
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* Retrieves the dimensions of the surface.
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*/
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SkISize dimensions() const { return fDimensions; }
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/**
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* Retrieves the width of the surface.
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*/
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int width() const { return fDimensions.width(); }
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/**
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* Retrieves the height of the surface.
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*/
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int height() const { return fDimensions.height(); }
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/**
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* Helper that gets the width and height of the surface as a bounding rectangle.
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*/
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SkRect getBoundsRect() const { return SkRect::Make(this->dimensions()); }
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virtual GrBackendFormat backendFormat() const = 0;
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SK_API void setRelease(sk_sp<GrRefCntedCallback> releaseHelper) {
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this->onSetRelease(releaseHelper);
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fReleaseHelper = std::move(releaseHelper);
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}
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// These match the definitions in SkImage, from whence they came.
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// TODO: Remove Chrome's need to call this on a GrTexture
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typedef void* ReleaseCtx;
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typedef void (*ReleaseProc)(ReleaseCtx);
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SK_API void setRelease(ReleaseProc proc, ReleaseCtx ctx) {
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sk_sp<GrRefCntedCallback> helper(new GrRefCntedCallback(proc, ctx));
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this->setRelease(std::move(helper));
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}
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/**
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* @return the texture associated with the surface, may be null.
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*/
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virtual GrTexture* asTexture() { return nullptr; }
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virtual const GrTexture* asTexture() const { return nullptr; }
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/**
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* @return the render target underlying this surface, may be null.
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*/
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virtual GrRenderTarget* asRenderTarget() { return nullptr; }
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virtual const GrRenderTarget* asRenderTarget() const { return nullptr; }
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/** Access methods that are only to be used within Skia code. */
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inline GrSurfacePriv surfacePriv();
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inline const GrSurfacePriv surfacePriv() const;
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static size_t ComputeSize(const GrCaps&, const GrBackendFormat&, SkISize dimensions,
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int colorSamplesPerPixel, GrMipMapped, bool binSize = false);
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/**
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* The pixel values of this surface cannot be modified (e.g. doesn't support write pixels or
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* MIP map level regen).
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*/
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bool readOnly() const { return fSurfaceFlags & GrInternalSurfaceFlags::kReadOnly; }
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bool framebufferOnly() const {
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return fSurfaceFlags & GrInternalSurfaceFlags::kFramebufferOnly;
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}
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// Returns true if we are working with protected content.
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bool isProtected() const { return fIsProtected == GrProtected::kYes; }
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void setFramebufferOnly() {
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SkASSERT(this->asRenderTarget());
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fSurfaceFlags |= GrInternalSurfaceFlags::kFramebufferOnly;
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}
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protected:
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void setGLRTFBOIDIs0() {
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SkASSERT(!this->requiresManualMSAAResolve());
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SkASSERT(!this->asTexture());
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SkASSERT(this->asRenderTarget());
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fSurfaceFlags |= GrInternalSurfaceFlags::kGLRTFBOIDIs0;
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}
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bool glRTFBOIDis0() const {
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return fSurfaceFlags & GrInternalSurfaceFlags::kGLRTFBOIDIs0;
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}
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void setRequiresManualMSAAResolve() {
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SkASSERT(!this->glRTFBOIDis0());
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SkASSERT(this->asRenderTarget());
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fSurfaceFlags |= GrInternalSurfaceFlags::kRequiresManualMSAAResolve;
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}
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bool requiresManualMSAAResolve() const {
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return fSurfaceFlags & GrInternalSurfaceFlags::kRequiresManualMSAAResolve;
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}
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void setReadOnly() {
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SkASSERT(!this->asRenderTarget());
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fSurfaceFlags |= GrInternalSurfaceFlags::kReadOnly;
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}
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// Provides access to methods that should be public within Skia code.
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friend class GrSurfacePriv;
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GrSurface(GrGpu* gpu, const SkISize& dimensions, GrProtected isProtected)
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: INHERITED(gpu)
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, fDimensions(dimensions)
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, fSurfaceFlags(GrInternalSurfaceFlags::kNone)
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, fIsProtected(isProtected) {}
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~GrSurface() override {
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// check that invokeReleaseProc has been called (if needed)
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SkASSERT(!fReleaseHelper);
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}
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void onRelease() override;
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void onAbandon() override;
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private:
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const char* getResourceType() const override { return "Surface"; }
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// Unmanaged backends (e.g. Vulkan) may want to specially handle the release proc in order to
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// ensure it isn't called until GPU work related to the resource is completed.
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virtual void onSetRelease(sk_sp<GrRefCntedCallback>) {}
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void invokeReleaseProc() {
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// Depending on the ref count of fReleaseHelper this may or may not actually trigger the
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// ReleaseProc to be called.
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fReleaseHelper.reset();
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}
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SkISize fDimensions;
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GrInternalSurfaceFlags fSurfaceFlags;
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GrProtected fIsProtected;
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sk_sp<GrRefCntedCallback> fReleaseHelper;
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typedef GrGpuResource INHERITED;
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};
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#endif
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