kc3-lang/angle/src/libANGLE/renderer/metal/ProvokingVertexHelper.h

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• Hash : 3a0da09d
  Author :
  Date : 2023-06-22T15:07:11
  

  Metal: Cache compute pipelines for provoking vertex emulation
  
  Remove ProvokingVertexComputePipelineCache and update
  ProvokingVertexHelper to use the PipelineCache.
  
  Bug: chromium:1329376
  Change-Id: Ifca89fbb572d850c806b24f124fb86c65eec4f11
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4637204
  Reviewed-by: Quyen Le <lehoangquyen@chromium.org>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Commit-Queue: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/renderer/metal/ProvokingVertexHelper.h

• //
  // Copyright 2021 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // ProvokingVertexHelper.h:
  //    Manages re-writing index buffers when provoking vertex support is needed.
  //    Handles points, lines, triangles, line strips, and triangle strips.
  //    Line loops, and triangle fans should be pre-processed.
  //
  #ifndef LIBANGLE_RENDERER_METAL_PROVOKINGVERTEXHELPER_H
  #define LIBANGLE_RENDERER_METAL_PROVOKINGVERTEXHELPER_H
  
  #include "libANGLE/Context.h"
  #include "libANGLE/renderer/ContextImpl.h"
  #include "libANGLE/renderer/metal/DisplayMtl.h"
  #include "libANGLE/renderer/metal/mtl_buffer_pool.h"
  #include "libANGLE/renderer/metal/mtl_command_buffer.h"
  #include "libANGLE/renderer/metal/mtl_context_device.h"
  #include "libANGLE/renderer/metal/mtl_state_cache.h"
  namespace rx
  {
  class ContextMtl;
  
  class ProvokingVertexHelper : angle::NonCopyable
  {
    public:
      ProvokingVertexHelper(ContextMtl *context);
      angle::Result preconditionIndexBuffer(ContextMtl *context,
                                            mtl::BufferRef indexBuffer,
                                            size_t indexCount,
                                            size_t indexOffset,
                                            bool primitiveRestartEnabled,
                                            gl::PrimitiveMode primitiveMode,
                                            gl::DrawElementsType elementsType,
                                            size_t &outIndexCount,
                                            size_t &outIndexOffset,
                                            gl::PrimitiveMode &outPrimitiveMode,
                                            mtl::BufferRef &outNewBuffer);
  
      angle::Result generateIndexBuffer(ContextMtl *context,
                                        size_t first,
                                        size_t indexCount,
                                        gl::PrimitiveMode primitiveMode,
                                        gl::DrawElementsType elementsType,
                                        size_t &outIndexCount,
                                        size_t &outIndexOffset,
                                        gl::PrimitiveMode &outPrimitiveMode,
                                        mtl::BufferRef &outNewBuffer);
  
      void releaseInFlightBuffers(ContextMtl *contextMtl);
      void ensureCommandBufferReady();
      void onDestroy(ContextMtl *context);
      mtl::ComputeCommandEncoder *getComputeCommandEncoder();
  
    private:
      angle::Result getComputePipleineState(
          ContextMtl *context,
          const mtl::ProvokingVertexComputePipelineDesc &desc,
          mtl::AutoObjCPtr<id<MTLComputePipelineState>> *outComputePipeline);
  
      angle::Result prepareCommandEncoderForDescriptor(ContextMtl *context,
                                                       mtl::ComputeCommandEncoder *encoder,
                                                       mtl::ProvokingVertexComputePipelineDesc desc);
  
      mtl::BufferPool mIndexBuffers;
  
      std::unordered_map<mtl::ProvokingVertexComputePipelineDesc, mtl::AutoObjCPtr<id<MTLFunction>>>
          mComputeFunctions;
  };
  }  // namespace rx
  #endif /* LIBANGLE_RENDERER_METAL_PROVOKINGVERTEXHELPER_H */
  

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