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127 lines
3.7 KiB
127 lines
3.7 KiB
/*
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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 "GrTypes.h"
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#include "GrBackendSurface.h"
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#include "GrGpuResource.h"
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#include "SkImageInfo.h"
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#include "SkRect.h"
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class GrRenderTarget;
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class GrSurfacePriv;
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class GrTexture;
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class SK_API GrSurface : public GrGpuResource {
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public:
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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 fWidth; }
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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 fHeight; }
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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::MakeIWH(this->width(), this->height()); }
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/**
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* Retrieves the pixel config specified when the surface was created.
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* For render targets this can be kUnknown_GrPixelConfig
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* if client asked us to render to a target that has a pixel
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* config that isn't equivalent with one of our configs.
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*/
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GrPixelConfig config() const { return fConfig; }
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virtual GrBackendFormat backendFormat() const = 0;
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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 WorstCaseSize(const GrSurfaceDesc& desc, bool useNextPow2 = false);
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static size_t ComputeSize(GrPixelConfig config, int width, int height, int colorSamplesPerPixel,
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GrMipMapped, bool useNextPow2 = 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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protected:
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void setHasMixedSamples() {
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SkASSERT(this->asRenderTarget());
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fSurfaceFlags |= GrInternalSurfaceFlags::kMixedSampled;
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}
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bool hasMixedSamples() const { return fSurfaceFlags & GrInternalSurfaceFlags::kMixedSampled; }
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void setGLRTFBOIDIs0() {
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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 setReadOnly() {
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SkASSERT(!this->asRenderTarget());
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fSurfaceFlags |= GrInternalSurfaceFlags::kReadOnly;
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}
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// Methods made available via GrSurfacePriv
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bool hasPendingRead() const;
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bool hasPendingWrite() const;
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bool hasPendingIO() const;
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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 GrSurfaceDesc& desc)
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: INHERITED(gpu)
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, fConfig(desc.fConfig)
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, fWidth(desc.fWidth)
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, fHeight(desc.fHeight)
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, fSurfaceFlags(GrInternalSurfaceFlags::kNone) {
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}
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~GrSurface() override {}
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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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GrPixelConfig fConfig;
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int fWidth;
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int fHeight;
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GrInternalSurfaceFlags fSurfaceFlags;
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typedef GrGpuResource INHERITED;
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};
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#endif
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