| /* |
| * Copyright 2021 Google LLC |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrMeshDrawTarget_DEFINED |
| #define GrMeshDrawTarget_DEFINED |
| |
| #include "src/gpu/GrDrawIndirectCommand.h" |
| #include "src/gpu/GrSimpleMesh.h" |
| |
| /* |
| * Abstract interface that supports creating vertices, indices, and meshes, as well as |
| * invoking GPU draw operations. |
| */ |
| class GrMeshDrawTarget { |
| public: |
| virtual ~GrMeshDrawTarget() {} |
| |
| /** Adds a draw of a mesh. 'primProcProxies' must have |
| * GrGeometryProcessor::numTextureSamplers() entries. Can be null if no samplers. |
| */ |
| virtual void recordDraw(const GrGeometryProcessor*, |
| const GrSimpleMesh[], |
| int meshCnt, |
| const GrSurfaceProxy* const primProcProxies[], |
| GrPrimitiveType) = 0; |
| |
| /** |
| * Helper for drawing GrSimpleMesh(es) with zero primProc textures. |
| */ |
| void recordDraw(const GrGeometryProcessor* gp, |
| const GrSimpleMesh meshes[], |
| int meshCnt, |
| GrPrimitiveType primitiveType) { |
| this->recordDraw(gp, meshes, meshCnt, nullptr, primitiveType); |
| } |
| |
| /** |
| * Makes space for vertex data. The returned pointer is the location where vertex data |
| * should be written. On return the buffer that will hold the data as well as an offset into |
| * the buffer (in 'vertexSize' units) where the data will be placed. |
| */ |
| virtual void* makeVertexSpace(size_t vertexSize, int vertexCount, sk_sp<const GrBuffer>*, |
| int* startVertex) = 0; |
| |
| /** |
| * Makes space for index data. The returned pointer is the location where index data |
| * should be written. On return the buffer that will hold the data as well as an offset into |
| * the buffer (in uint16_t units) where the data will be placed. |
| */ |
| virtual uint16_t* makeIndexSpace(int indexCount, sk_sp<const GrBuffer>*, int* startIndex) = 0; |
| |
| /** |
| * This is similar to makeVertexSpace. It allows the caller to use up to 'actualVertexCount' |
| * vertices in the returned pointer, which may exceed 'minVertexCount'. |
| * 'fallbackVertexCount' is the maximum number of vertices that should be allocated if a new |
| * buffer is allocated on behalf of this request. |
| */ |
| virtual void* makeVertexSpaceAtLeast(size_t vertexSize, int minVertexCount, |
| int fallbackVertexCount, sk_sp<const GrBuffer>*, |
| int* startVertex, int* actualVertexCount) = 0; |
| |
| /** |
| * This is similar to makeIndexSpace. It allows the caller to use up to 'actualIndexCount' |
| * indices in the returned pointer, which may exceed 'minIndexCount'. |
| * 'fallbackIndexCount' is the maximum number of indices that should be allocated if a new |
| * buffer is allocated on behalf of this request. |
| */ |
| virtual uint16_t* makeIndexSpaceAtLeast(int minIndexCount, int fallbackIndexCount, |
| sk_sp<const GrBuffer>*, int* startIndex, |
| int* actualIndexCount) = 0; |
| |
| /** |
| * Makes space for elements in a draw-indirect buffer. Upon success, the returned pointer is a |
| * CPU mapping where the data should be written. |
| */ |
| virtual GrDrawIndirectWriter makeDrawIndirectSpace(int drawCount, sk_sp<const GrBuffer>* buffer, |
| size_t* offsetInBytes) = 0; |
| |
| /** |
| * Makes space for elements in a draw-indexed-indirect buffer. Upon success, the returned |
| * pointer is a CPU mapping where the data should be written. |
| */ |
| virtual GrDrawIndexedIndirectWriter makeDrawIndexedIndirectSpace(int drawCount, |
| sk_sp<const GrBuffer>*, |
| size_t* offsetInBytes) = 0; |
| |
| /** Helpers for ops which over-allocate and then return excess data to the pool. */ |
| virtual void putBackIndices(int indices) = 0; |
| virtual void putBackVertices(int vertices, size_t vertexStride) = 0; |
| virtual void putBackIndirectDraws(int count) = 0; |
| virtual void putBackIndexedIndirectDraws(int count) = 0; |
| |
| GrSimpleMesh* allocMesh() { return this->allocator()->make<GrSimpleMesh>(); } |
| GrSimpleMesh* allocMeshes(int n) { return this->allocator()->makeArray<GrSimpleMesh>(n); } |
| const GrSurfaceProxy** allocPrimProcProxyPtrs(int n) { |
| return this->allocator()->makeArray<const GrSurfaceProxy*>(n); |
| } |
| |
| virtual GrRenderTargetProxy* rtProxy() const = 0; |
| virtual const GrSurfaceProxyView& writeView() const = 0; |
| |
| virtual const GrAppliedClip* appliedClip() const = 0; |
| virtual GrAppliedClip detachAppliedClip() = 0; |
| |
| virtual const GrDstProxyView& dstProxyView() const = 0; |
| virtual bool usesMSAASurface() const = 0; |
| |
| virtual GrXferBarrierFlags renderPassBarriers() const = 0; |
| |
| virtual GrLoadOp colorLoadOp() const = 0; |
| |
| virtual GrThreadSafeCache* threadSafeCache() const = 0; |
| virtual GrResourceProvider* resourceProvider() const = 0; |
| uint32_t contextUniqueID() const { return this->resourceProvider()->contextUniqueID(); } |
| |
| virtual GrStrikeCache* strikeCache() const = 0; |
| virtual GrAtlasManager* atlasManager() const = 0; |
| virtual GrSmallPathAtlasMgr* smallPathAtlasManager() const = 0; |
| |
| // This should be called during onPrepare of a GrOp. The caller should add any proxies to the |
| // array it will use that it did not access during a call to visitProxies. This is usually the |
| // case for atlases. |
| virtual SkTArray<GrSurfaceProxy*, true>* sampledProxyArray() = 0; |
| |
| virtual const GrCaps& caps() const = 0; |
| |
| virtual GrDeferredUploadTarget* deferredUploadTarget() = 0; |
| |
| virtual SkArenaAlloc* allocator() = 0; |
| }; |
| |
| #endif |