| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrGpu_DEFINED |
| #define GrGpu_DEFINED |
| |
| #include "GrCaps.h" |
| #include "GrGpuCommandBuffer.h" |
| #include "GrProgramDesc.h" |
| #include "GrSwizzle.h" |
| #include "GrAllocator.h" |
| #include "GrTextureProducer.h" |
| #include "GrTypes.h" |
| #include "GrXferProcessor.h" |
| #include "SkPath.h" |
| #include "SkTArray.h" |
| #include <map> |
| |
| class GrBackendRenderTarget; |
| class GrBackendSemaphore; |
| class GrBuffer; |
| class GrContext; |
| struct GrContextOptions; |
| class GrGLContext; |
| class GrMesh; |
| class GrPath; |
| class GrPathRange; |
| class GrPathRenderer; |
| class GrPathRendererChain; |
| class GrPathRendering; |
| class GrPipeline; |
| class GrPrimitiveProcessor; |
| class GrRenderTarget; |
| class GrSemaphore; |
| class GrStencilAttachment; |
| class GrStencilSettings; |
| class GrSurface; |
| class GrTexture; |
| class SkJSONWriter; |
| |
| class GrGpu : public SkRefCnt { |
| public: |
| /** |
| * Create an instance of GrGpu that matches the specified backend. If the requested backend is |
| * not supported (at compile-time or run-time) this returns nullptr. The context will not be |
| * fully constructed and should not be used by GrGpu until after this function returns. |
| */ |
| static sk_sp<GrGpu> Make(GrBackend, GrBackendContext, const GrContextOptions&, GrContext*); |
| |
| //////////////////////////////////////////////////////////////////////////// |
| |
| GrGpu(GrContext* context); |
| ~GrGpu() override; |
| |
| GrContext* getContext() { return fContext; } |
| const GrContext* getContext() const { return fContext; } |
| |
| /** |
| * Gets the capabilities of the draw target. |
| */ |
| const GrCaps* caps() const { return fCaps.get(); } |
| sk_sp<const GrCaps> refCaps() const { return fCaps; } |
| |
| GrPathRendering* pathRendering() { return fPathRendering.get(); } |
| |
| enum class DisconnectType { |
| // No cleanup should be attempted, immediately cease making backend API calls |
| kAbandon, |
| // Free allocated resources (not known by GrResourceCache) before returning and |
| // ensure no backend backend 3D API calls will be made after disconnect() returns. |
| kCleanup, |
| }; |
| |
| // Called by GrContext when the underlying backend context is already or will be destroyed |
| // before GrContext. |
| virtual void disconnect(DisconnectType); |
| |
| /** |
| * The GrGpu object normally assumes that no outsider is setting state |
| * within the underlying 3D API's context/device/whatever. This call informs |
| * the GrGpu that the state was modified and it shouldn't make assumptions |
| * about the state. |
| */ |
| void markContextDirty(uint32_t state = kAll_GrBackendState) { fResetBits |= state; } |
| |
| /** |
| * Creates a texture object. If kRenderTarget_GrSurfaceFlag the texture can |
| * be used as a render target by calling GrTexture::asRenderTarget(). Not all |
| * pixel configs can be used as render targets. Support for configs as textures |
| * or render targets can be checked using GrCaps. |
| * |
| * @param desc describes the texture to be created. |
| * @param budgeted does this texture count against the resource cache budget? |
| * @param texels array of mipmap levels containing texel data to load. |
| * Each level begins with full-size palette data for paletted textures. |
| * It contains width*height texels. If there is only one |
| * element and it contains nullptr fPixels, texture data is |
| * uninitialized. |
| * @param mipLevelCount the number of levels in 'texels' |
| * @return The texture object if successful, otherwise nullptr. |
| */ |
| sk_sp<GrTexture> createTexture(const GrSurfaceDesc&, SkBudgeted, |
| const GrMipLevel texels[], int mipLevelCount); |
| |
| /** |
| * Simplified createTexture() interface for when there is no initial texel data to upload. |
| */ |
| sk_sp<GrTexture> createTexture(const GrSurfaceDesc& desc, SkBudgeted); |
| |
| /** |
| * Implements GrResourceProvider::wrapBackendTexture |
| */ |
| sk_sp<GrTexture> wrapBackendTexture(const GrBackendTexture&, GrWrapOwnership); |
| |
| /** |
| * Implements GrResourceProvider::wrapRenderableBackendTexture |
| */ |
| sk_sp<GrTexture> wrapRenderableBackendTexture(const GrBackendTexture&, |
| int sampleCnt, GrWrapOwnership); |
| |
| /** |
| * Implements GrResourceProvider::wrapBackendRenderTarget |
| */ |
| sk_sp<GrRenderTarget> wrapBackendRenderTarget(const GrBackendRenderTarget&); |
| |
| /** |
| * Implements GrResourceProvider::wrapBackendTextureAsRenderTarget |
| */ |
| sk_sp<GrRenderTarget> wrapBackendTextureAsRenderTarget(const GrBackendTexture&, |
| int sampleCnt); |
| |
| /** |
| * Creates a buffer in GPU memory. For a client-side buffer use GrBuffer::CreateCPUBacked. |
| * |
| * @param size size of buffer to create. |
| * @param intendedType hint to the graphics subsystem about what the buffer will be used for. |
| * @param accessPattern hint to the graphics subsystem about how the data will be accessed. |
| * @param data optional data with which to initialize the buffer. |
| * |
| * @return the buffer if successful, otherwise nullptr. |
| */ |
| GrBuffer* createBuffer(size_t size, GrBufferType intendedType, GrAccessPattern accessPattern, |
| const void* data = nullptr); |
| |
| /** |
| * Resolves MSAA. |
| */ |
| void resolveRenderTarget(GrRenderTarget*, GrSurfaceOrigin); |
| |
| /** Info struct returned by getReadPixelsInfo about performing intermediate draws before |
| reading pixels for performance or correctness. */ |
| struct ReadPixelTempDrawInfo { |
| /** If the GrGpu is requesting that the caller do a draw to an intermediate surface then |
| this is descriptor for the temp surface. The draw should always be a rect with |
| dst 0,0,w,h. */ |
| GrSurfaceDesc fTempSurfaceDesc; |
| /** Indicates whether there is a performance advantage to using an exact match texture |
| (in terms of width and height) for the intermediate texture instead of approximate. */ |
| SkBackingFit fTempSurfaceFit; |
| /** Swizzle to apply during the draw. This is used to compensate for either feature or |
| performance limitations in the underlying 3D API. */ |
| GrSwizzle fSwizzle; |
| /** The config that should be used to read from the temp surface after the draw. This may be |
| different than the original read config in order to compensate for swizzling. The |
| read data will effectively be in the original read config. */ |
| GrPixelConfig fReadConfig; |
| }; |
| |
| /** Describes why an intermediate draw must/should be performed before readPixels. */ |
| enum DrawPreference { |
| /** On input means that the caller would proceed without draw if the GrGpu doesn't request |
| one. |
| On output means that the GrGpu is not requesting a draw. */ |
| kNoDraw_DrawPreference, |
| /** Means that the client would prefer a draw for performance of the readback but |
| can satisfy a straight readPixels call on the inputs without an intermediate draw. |
| getReadPixelsInfo will never set the draw preference to this value but may leave |
| it set. */ |
| kCallerPrefersDraw_DrawPreference, |
| /** On output means that GrGpu would prefer a draw for performance of the readback but |
| can satisfy a straight readPixels call on the inputs without an intermediate draw. The |
| caller of getReadPixelsInfo should never specify this on intput. */ |
| kGpuPrefersDraw_DrawPreference, |
| /** On input means that the caller requires a draw to do a transformation and there is no |
| CPU fallback. |
| On output means that GrGpu can only satisfy the readPixels request if the intermediate |
| draw is performed. |
| */ |
| kRequireDraw_DrawPreference |
| }; |
| |
| /** |
| * Used to negotiate whether and how an intermediate draw should or must be performed before |
| * a readPixels call. If this returns false then GrGpu could not deduce an intermediate draw |
| * that would allow a successful readPixels call. The passed width, height, and rowBytes, |
| * must be non-zero and already reflect clipping to the src bounds. |
| */ |
| bool getReadPixelsInfo(GrSurface* srcSurface, GrSurfaceOrigin srcOrigin, |
| int readWidth, int readHeight, size_t rowBytes, |
| GrPixelConfig readConfig, DrawPreference*, ReadPixelTempDrawInfo*); |
| |
| /** Info struct returned by getWritePixelsInfo about performing an intermediate draw in order |
| to write pixels to a GrSurface for either performance or correctness reasons. */ |
| struct WritePixelTempDrawInfo { |
| /** If the GrGpu is requesting that the caller upload to an intermediate surface and draw |
| that to the dst then this is the descriptor for the intermediate surface. The caller |
| should upload the pixels such that the upper left pixel of the upload rect is at 0,0 in |
| the intermediate surface.*/ |
| GrSurfaceDesc fTempSurfaceDesc; |
| /** Swizzle to apply during the draw. This is used to compensate for either feature or |
| performance limitations in the underlying 3D API. */ |
| GrSwizzle fSwizzle; |
| /** The config that should be specified when uploading the *original* data to the temp |
| surface before the draw. This may be different than the original src data config in |
| order to compensate for swizzling that will occur when drawing. */ |
| GrPixelConfig fWriteConfig; |
| }; |
| |
| /** |
| * Used to negotiate whether and how an intermediate surface should be used to write pixels to |
| * a GrSurface. If this returns false then GrGpu could not deduce an intermediate draw |
| * that would allow a successful transfer of the src pixels to the dst. The passed width, |
| * height, and rowBytes, must be non-zero and already reflect clipping to the dst bounds. |
| */ |
| bool getWritePixelsInfo(GrSurface* dstSurface, GrSurfaceOrigin dstOrigin, int width, int height, |
| GrPixelConfig srcConfig, DrawPreference*, WritePixelTempDrawInfo*); |
| |
| /** |
| * Reads a rectangle of pixels from a render target. |
| * |
| * @param surface The surface to read from |
| * @param left left edge of the rectangle to read (inclusive) |
| * @param top top edge of the rectangle to read (inclusive) |
| * @param width width of rectangle to read in pixels. |
| * @param height height of rectangle to read in pixels. |
| * @param config the pixel config of the destination buffer |
| * @param buffer memory to read the rectangle into. |
| * @param rowBytes the number of bytes between consecutive rows. Zero |
| * means rows are tightly packed. |
| * @param invertY buffer should be populated bottom-to-top as opposed |
| * to top-to-bottom (skia's usual order) |
| * |
| * @return true if the read succeeded, false if not. The read can fail |
| * because of a unsupported pixel config or because no render |
| * target is currently set. |
| */ |
| bool readPixels(GrSurface* surface, GrSurfaceOrigin, |
| int left, int top, int width, int height, |
| GrPixelConfig config, void* buffer, size_t rowBytes); |
| |
| /** |
| * Updates the pixels in a rectangle of a surface. |
| * |
| * @param surface The surface to write to. |
| * @param left left edge of the rectangle to write (inclusive) |
| * @param top top edge of the rectangle to write (inclusive) |
| * @param width width of rectangle to write in pixels. |
| * @param height height of rectangle to write in pixels. |
| * @param config the pixel config of the source buffer |
| * @param texels array of mipmap levels containing texture data |
| * @param mipLevelCount number of levels in 'texels' |
| */ |
| bool writePixels(GrSurface* surface, GrSurfaceOrigin origin, |
| int left, int top, int width, int height, |
| GrPixelConfig config, |
| const GrMipLevel texels[], int mipLevelCount); |
| |
| /** |
| * This function is a shim which creates a SkTArray<GrMipLevel> of size 1. |
| * It then calls writePixels with that SkTArray. |
| * |
| * @param buffer memory to read pixels from. |
| * @param rowBytes number of bytes between consecutive rows. Zero |
| * means rows are tightly packed. |
| */ |
| bool writePixels(GrSurface* surface, GrSurfaceOrigin origin, |
| int left, int top, int width, int height, |
| GrPixelConfig config, const void* buffer, |
| size_t rowBytes); |
| |
| /** |
| * Updates the pixels in a rectangle of a texture using a buffer |
| * |
| * There are a couple of assumptions here. First, we only update the top miplevel. |
| * And second, that any y flip needed has already been done in the buffer. |
| * |
| * @param texture The texture to write to. |
| * @param left left edge of the rectangle to write (inclusive) |
| * @param top top edge of the rectangle to write (inclusive) |
| * @param width width of rectangle to write in pixels. |
| * @param height height of rectangle to write in pixels. |
| * @param config the pixel config of the source buffer |
| * @param transferBuffer GrBuffer to read pixels from (type must be "kXferCpuToGpu") |
| * @param offset offset from the start of the buffer |
| * @param rowBytes number of bytes between consecutive rows in the buffer. Zero |
| * means rows are tightly packed. |
| */ |
| bool transferPixels(GrTexture* texture, |
| int left, int top, int width, int height, |
| GrPixelConfig config, GrBuffer* transferBuffer, |
| size_t offset, size_t rowBytes); |
| |
| // After the client interacts directly with the 3D context state the GrGpu |
| // must resync its internal state and assumptions about 3D context state. |
| // Each time this occurs the GrGpu bumps a timestamp. |
| // state of the 3D context |
| // At 10 resets / frame and 60fps a 64bit timestamp will overflow in about |
| // a billion years. |
| typedef uint64_t ResetTimestamp; |
| |
| // This timestamp is always older than the current timestamp |
| static const ResetTimestamp kExpiredTimestamp = 0; |
| // Returns a timestamp based on the number of times the context was reset. |
| // This timestamp can be used to lazily detect when cached 3D context state |
| // is dirty. |
| ResetTimestamp getResetTimestamp() const { return fResetTimestamp; } |
| |
| // Called to perform a surface to surface copy. Fallbacks to issuing a draw from the src to dst |
| // take place at the GrOpList level and this function implement faster copy paths. The rect |
| // and point are pre-clipped. The src rect and implied dst rect are guaranteed to be within the |
| // src/dst bounds and non-empty. |
| bool copySurface(GrSurface* dst, GrSurfaceOrigin dstOrigin, |
| GrSurface* src, GrSurfaceOrigin srcOrigin, |
| const SkIRect& srcRect, |
| const SkIPoint& dstPoint); |
| |
| struct MultisampleSpecs { |
| MultisampleSpecs(uint8_t uniqueID, int effectiveSampleCnt, const SkPoint* locations) |
| : fUniqueID(uniqueID), |
| fEffectiveSampleCnt(effectiveSampleCnt), |
| fSampleLocations(locations) {} |
| |
| // Nonzero ID that uniquely identifies these multisample specs. |
| uint8_t fUniqueID; |
| // The actual number of samples the GPU will run. NOTE: this value can be greater than the |
| // the render target's sample count. |
| int fEffectiveSampleCnt; |
| // If sample locations are supported, points to the subpixel locations at which the GPU will |
| // sample. Pixel center is at (.5, .5), and (0, 0) indicates the top left corner. |
| const SkPoint* fSampleLocations; |
| }; |
| |
| // Finds a render target's multisample specs. The pipeline is only needed in case we need to |
| // flush the draw state prior to querying multisample info. The pipeline is not expected to |
| // affect the multisample information itself. |
| const MultisampleSpecs& queryMultisampleSpecs(const GrPipeline&); |
| |
| // Finds the multisample specs with a given unique id. |
| const MultisampleSpecs& getMultisampleSpecs(uint8_t uniqueID) { |
| SkASSERT(uniqueID > 0 && uniqueID < fMultisampleSpecs.count()); |
| return fMultisampleSpecs[uniqueID]; |
| } |
| |
| // Creates a GrGpuRTCommandBuffer which GrOpLists send draw commands to instead of directly |
| // to the Gpu object. |
| virtual GrGpuRTCommandBuffer* createCommandBuffer( |
| GrRenderTarget*, GrSurfaceOrigin, |
| const GrGpuRTCommandBuffer::LoadAndStoreInfo&, |
| const GrGpuRTCommandBuffer::StencilLoadAndStoreInfo&) = 0; |
| |
| // Creates a GrGpuTextureCommandBuffer which GrOpLists send texture commands to instead of |
| // directly to the Gpu object. |
| virtual GrGpuTextureCommandBuffer* createCommandBuffer(GrTexture*, GrSurfaceOrigin) = 0; |
| |
| // Called by GrDrawingManager when flushing. |
| // Provides a hook for post-flush actions (e.g. Vulkan command buffer submits). This will also |
| // insert any numSemaphore semaphores on the gpu and set the backendSemaphores to match the |
| // inserted semaphores. |
| GrSemaphoresSubmitted finishFlush(int numSemaphores, GrBackendSemaphore backendSemaphores[]); |
| |
| virtual GrFence SK_WARN_UNUSED_RESULT insertFence() = 0; |
| virtual bool waitFence(GrFence, uint64_t timeout = 1000) = 0; |
| virtual void deleteFence(GrFence) const = 0; |
| |
| virtual sk_sp<GrSemaphore> SK_WARN_UNUSED_RESULT makeSemaphore(bool isOwned = true) = 0; |
| virtual sk_sp<GrSemaphore> wrapBackendSemaphore(const GrBackendSemaphore& semaphore, |
| GrResourceProvider::SemaphoreWrapType wrapType, |
| GrWrapOwnership ownership) = 0; |
| virtual void insertSemaphore(sk_sp<GrSemaphore> semaphore, bool flush = false) = 0; |
| virtual void waitSemaphore(sk_sp<GrSemaphore> semaphore) = 0; |
| |
| /** |
| * Put this texture in a safe and known state for use across multiple GrContexts. Depending on |
| * the backend, this may return a GrSemaphore. If so, other contexts should wait on that |
| * semaphore before using this texture. |
| */ |
| virtual sk_sp<GrSemaphore> prepareTextureForCrossContextUsage(GrTexture*) = 0; |
| |
| /////////////////////////////////////////////////////////////////////////// |
| // Debugging and Stats |
| |
| class Stats { |
| public: |
| #if GR_GPU_STATS |
| Stats() { this->reset(); } |
| |
| void reset() { |
| fRenderTargetBinds = 0; |
| fShaderCompilations = 0; |
| fTextureCreates = 0; |
| fTextureUploads = 0; |
| fTransfersToTexture = 0; |
| fStencilAttachmentCreates = 0; |
| fNumDraws = 0; |
| fNumFailedDraws = 0; |
| } |
| |
| int renderTargetBinds() const { return fRenderTargetBinds; } |
| void incRenderTargetBinds() { fRenderTargetBinds++; } |
| int shaderCompilations() const { return fShaderCompilations; } |
| void incShaderCompilations() { fShaderCompilations++; } |
| int textureCreates() const { return fTextureCreates; } |
| void incTextureCreates() { fTextureCreates++; } |
| int textureUploads() const { return fTextureUploads; } |
| void incTextureUploads() { fTextureUploads++; } |
| int transfersToTexture() const { return fTransfersToTexture; } |
| void incTransfersToTexture() { fTransfersToTexture++; } |
| void incStencilAttachmentCreates() { fStencilAttachmentCreates++; } |
| void incNumDraws() { fNumDraws++; } |
| void incNumFailedDraws() { ++fNumFailedDraws; } |
| void dump(SkString*); |
| void dumpKeyValuePairs(SkTArray<SkString>* keys, SkTArray<double>* values); |
| int numDraws() const { return fNumDraws; } |
| int numFailedDraws() const { return fNumFailedDraws; } |
| private: |
| int fRenderTargetBinds; |
| int fShaderCompilations; |
| int fTextureCreates; |
| int fTextureUploads; |
| int fTransfersToTexture; |
| int fStencilAttachmentCreates; |
| int fNumDraws; |
| int fNumFailedDraws; |
| #else |
| void dump(SkString*) {} |
| void dumpKeyValuePairs(SkTArray<SkString>*, SkTArray<double>*) {} |
| void incRenderTargetBinds() {} |
| void incShaderCompilations() {} |
| void incTextureCreates() {} |
| void incTextureUploads() {} |
| void incTransfersToTexture() {} |
| void incStencilAttachmentCreates() {} |
| void incNumDraws() {} |
| void incNumFailedDraws() {} |
| #endif |
| }; |
| |
| Stats* stats() { return &fStats; } |
| void dumpJSON(SkJSONWriter*) const; |
| |
| /** Creates a texture directly in the backend API without wrapping it in a GrTexture. This is |
| only to be used for testing (particularly for testing the methods that import an externally |
| created texture into Skia. Must be matched with a call to deleteTestingOnlyTexture(). */ |
| GrBackendTexture createTestingOnlyBackendTexture(void* pixels, int w, int h, SkColorType, |
| bool isRenderTarget, GrMipMapped); |
| |
| /** Older version based on GrPixelConfig. Currently the preferred one above devolves to this. */ |
| virtual GrBackendTexture createTestingOnlyBackendTexture( |
| void* pixels, int w, int h, |
| GrPixelConfig config, |
| bool isRenderTarget, |
| GrMipMapped mipMapped) = 0; |
| /** Check a handle represents an actual texture in the backend API that has not been freed. */ |
| virtual bool isTestingOnlyBackendTexture(const GrBackendTexture&) const = 0; |
| /** If ownership of the backend texture has been transferred pass true for abandonTexture. This |
| will do any necessary cleanup of the handle without freeing the texture in the backend |
| API. */ |
| virtual void deleteTestingOnlyBackendTexture(GrBackendTexture*, |
| bool abandonTexture = false) = 0; |
| |
| // width and height may be larger than rt (if underlying API allows it). |
| // Returns nullptr if compatible sb could not be created, otherwise the caller owns the ref on |
| // the GrStencilAttachment. |
| virtual GrStencilAttachment* createStencilAttachmentForRenderTarget(const GrRenderTarget*, |
| int width, |
| int height) = 0; |
| // clears target's entire stencil buffer to 0 |
| virtual void clearStencil(GrRenderTarget* target, int clearValue) = 0; |
| |
| // Determines whether a texture will need to be rescaled in order to be used with the |
| // GrSamplerState. This variation is called when the caller will create a new texture using the |
| // resource provider from a non-texture src (cpu-backed image, ...). |
| bool isACopyNeededForTextureParams(int width, int height, const GrSamplerState&, |
| GrTextureProducer::CopyParams*, |
| SkScalar scaleAdjust[2]) const; |
| |
| // Like the above but this variation should be called when the caller is not creating the |
| // original texture but rather was handed the original texture. It adds additional checks |
| // relevant to original textures that were created external to Skia via |
| // GrResourceProvider::wrap methods. |
| bool isACopyNeededForTextureParams(GrTextureProxy* proxy, const GrSamplerState& params, |
| GrTextureProducer::CopyParams* copyParams, |
| SkScalar scaleAdjust[2]) const { |
| if (this->isACopyNeededForTextureParams(proxy->width(), proxy->height(), params, |
| copyParams, scaleAdjust)) { |
| return true; |
| } |
| return this->onIsACopyNeededForTextureParams(proxy, params, copyParams, scaleAdjust); |
| } |
| |
| // This is only to be used in GL-specific tests. |
| virtual const GrGLContext* glContextForTesting() const { return nullptr; } |
| |
| // This is only to be used by testing code |
| virtual void resetShaderCacheForTesting() const {} |
| |
| void handleDirtyContext() { |
| if (fResetBits) { |
| this->resetContext(); |
| } |
| } |
| |
| protected: |
| static void ElevateDrawPreference(GrGpu::DrawPreference* preference, |
| GrGpu::DrawPreference elevation) { |
| GR_STATIC_ASSERT(GrGpu::kCallerPrefersDraw_DrawPreference > GrGpu::kNoDraw_DrawPreference); |
| GR_STATIC_ASSERT(GrGpu::kGpuPrefersDraw_DrawPreference > |
| GrGpu::kCallerPrefersDraw_DrawPreference); |
| GR_STATIC_ASSERT(GrGpu::kRequireDraw_DrawPreference > |
| GrGpu::kGpuPrefersDraw_DrawPreference); |
| *preference = SkTMax(*preference, elevation); |
| } |
| |
| // Handles cases where a surface will be updated without a call to flushRenderTarget |
| void didWriteToSurface(GrSurface* surface, const SkIRect* bounds, uint32_t mipLevels = 1) const; |
| |
| Stats fStats; |
| std::unique_ptr<GrPathRendering> fPathRendering; |
| // Subclass must initialize this in its constructor. |
| sk_sp<const GrCaps> fCaps; |
| |
| typedef SkTArray<SkPoint, true> SamplePattern; |
| |
| private: |
| // called when the 3D context state is unknown. Subclass should emit any |
| // assumed 3D context state and dirty any state cache. |
| virtual void onResetContext(uint32_t resetBits) = 0; |
| |
| // Called before certain draws in order to guarantee coherent results from dst reads. |
| virtual void xferBarrier(GrRenderTarget*, GrXferBarrierType) = 0; |
| |
| // overridden by backend-specific derived class to create objects. |
| // Texture size and sample size will have already been validated in base class before |
| // onCreateTexture is called. |
| virtual sk_sp<GrTexture> onCreateTexture(const GrSurfaceDesc&, SkBudgeted, |
| const GrMipLevel texels[], |
| int mipLevelCount) = 0; |
| |
| virtual sk_sp<GrTexture> onWrapBackendTexture(const GrBackendTexture&, GrWrapOwnership) = 0; |
| virtual sk_sp<GrTexture> onWrapRenderableBackendTexture(const GrBackendTexture&, |
| int sampleCnt, |
| GrWrapOwnership) = 0; |
| virtual sk_sp<GrRenderTarget> onWrapBackendRenderTarget(const GrBackendRenderTarget&) = 0; |
| virtual sk_sp<GrRenderTarget> onWrapBackendTextureAsRenderTarget(const GrBackendTexture&, |
| int sampleCnt) = 0; |
| virtual GrBuffer* onCreateBuffer(size_t size, GrBufferType intendedType, GrAccessPattern, |
| const void* data) = 0; |
| |
| virtual bool onIsACopyNeededForTextureParams(GrTextureProxy* proxy, const GrSamplerState&, |
| GrTextureProducer::CopyParams*, |
| SkScalar scaleAdjust[2]) const { |
| return false; |
| } |
| |
| virtual bool onGetReadPixelsInfo(GrSurface* srcSurface, GrSurfaceOrigin srcOrigin, |
| int readWidth, int readHeight, |
| size_t rowBytes, GrPixelConfig readConfig, DrawPreference*, |
| ReadPixelTempDrawInfo*) = 0; |
| virtual bool onGetWritePixelsInfo(GrSurface* dstSurface, GrSurfaceOrigin dstOrigin, |
| int width, int height, |
| GrPixelConfig srcConfig, DrawPreference*, |
| WritePixelTempDrawInfo*) = 0; |
| |
| // overridden by backend-specific derived class to perform the surface read |
| virtual bool onReadPixels(GrSurface*, GrSurfaceOrigin, |
| int left, int top, |
| int width, int height, |
| GrPixelConfig, |
| void* buffer, |
| size_t rowBytes) = 0; |
| |
| // overridden by backend-specific derived class to perform the surface write |
| virtual bool onWritePixels(GrSurface*, GrSurfaceOrigin, |
| int left, int top, int width, int height, |
| GrPixelConfig config, |
| const GrMipLevel texels[], int mipLevelCount) = 0; |
| |
| // overridden by backend-specific derived class to perform the texture transfer |
| virtual bool onTransferPixels(GrTexture*, |
| int left, int top, int width, int height, |
| GrPixelConfig config, GrBuffer* transferBuffer, |
| size_t offset, size_t rowBytes) = 0; |
| |
| // overridden by backend-specific derived class to perform the resolve |
| virtual void onResolveRenderTarget(GrRenderTarget* target, GrSurfaceOrigin) = 0; |
| |
| // overridden by backend specific derived class to perform the copy surface |
| virtual bool onCopySurface(GrSurface* dst, GrSurfaceOrigin dstOrigin, |
| GrSurface* src, GrSurfaceOrigin srcOrigin, |
| const SkIRect& srcRect, const SkIPoint& dstPoint) = 0; |
| |
| // overridden by backend specific derived class to perform the multisample queries |
| virtual void onQueryMultisampleSpecs(GrRenderTarget*, GrSurfaceOrigin rtOrigin, |
| const GrStencilSettings&, |
| int* effectiveSampleCnt, SamplePattern*) = 0; |
| |
| virtual void onFinishFlush(bool insertedSemaphores) = 0; |
| |
| virtual void onDumpJSON(SkJSONWriter*) const {} |
| |
| void resetContext() { |
| this->onResetContext(fResetBits); |
| fResetBits = 0; |
| ++fResetTimestamp; |
| } |
| |
| struct SamplePatternComparator { |
| bool operator()(const SamplePattern&, const SamplePattern&) const; |
| }; |
| |
| typedef std::map<SamplePattern, uint8_t, SamplePatternComparator> MultisampleSpecsIdMap; |
| |
| ResetTimestamp fResetTimestamp; |
| uint32_t fResetBits; |
| MultisampleSpecsIdMap fMultisampleSpecsIdMap; |
| SkSTArray<1, MultisampleSpecs, true> fMultisampleSpecs; |
| // The context owns us, not vice-versa, so this ptr is not ref'ed by Gpu. |
| GrContext* fContext; |
| |
| friend class GrPathRendering; |
| typedef SkRefCnt INHERITED; |
| }; |
| |
| #endif |