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

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• Hash : 9ff58e26
  Author :
  Date : 2020-09-27T15:27:12
  

  Metal: Implement sampler object & shadow compare mode
  
  Note: GL_TEXTURE_COMPARE_MODE=GL_NONE is not supported on shadow sampler
  for now.
  
  Bug: angleproject:2634
  Change-Id: I470bad6322e78ef1408e4334e1e778821df7cbf1
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2433332
  Commit-Queue: Le Hoang Quyen <le.hoang.q@gmail.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
  

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

• //
  // Copyright 2020 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.
  //
  // SamplerMtl.h:
  //    Defines the class interface for SamplerMtl, implementing SamplerImpl.
  //
  
  #ifndef LIBANGLE_RENDERER_METAL_SAMPLERMTL_H_
  #define LIBANGLE_RENDERER_METAL_SAMPLERMTL_H_
  
  #include "libANGLE/renderer/SamplerImpl.h"
  #include "libANGLE/renderer/metal/mtl_common.h"
  
  namespace rx
  {
  
  class ContextMtl;
  
  class SamplerMtl : public SamplerImpl
  {
    public:
      SamplerMtl(const gl::SamplerState &state);
      ~SamplerMtl() override;
  
      void onDestroy(const gl::Context *context) override;
      angle::Result syncState(const gl::Context *context, const bool dirty) override;
      const mtl::AutoObjCPtr<id<MTLSamplerState>> &getSampler(ContextMtl *contextMtl);
  
    private:
      mtl::AutoObjCPtr<id<MTLSamplerState>> mSamplerState;
  
      // Cache compare mode & func to detect their changes and let ProgramMtl verify that
      // GL_TEXTURE_COMPARE_MODE is not GL_NONE on a shadow sampler.
      // TODO(http://anglebug.com/5231): Once the validation code is implemented on front-end, it
      // is possible to remove these caching.
      GLenum mCompareMode = 0;
      GLenum mCompareFunc = 0;
  };
  
  }  // namespace rx
  
  #endif
  

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