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

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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.mm

• //
  // 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.mm:
  //    Defines the class interface for SamplerMtl, implementing SamplerImpl.
  //
  
  #include "libANGLE/renderer/metal/SamplerMtl.h"
  
  #include "common/debug.h"
  #include "libANGLE/Context.h"
  #include "libANGLE/renderer/metal/ContextMtl.h"
  #include "libANGLE/renderer/metal/DisplayMtl.h"
  #include "libANGLE/renderer/metal/mtl_state_cache.h"
  
  namespace rx
  {
  
  SamplerMtl::SamplerMtl(const gl::SamplerState &state) : SamplerImpl(state) {}
  
  SamplerMtl::~SamplerMtl() = default;
  
  void SamplerMtl::onDestroy(const gl::Context *context)
  {
      mSamplerState = nil;
  }
  
  const mtl::AutoObjCPtr<id<MTLSamplerState>> &SamplerMtl::getSampler(ContextMtl *contextMtl)
  {
      if (!mSamplerState)
      {
          DisplayMtl *displayMtl = contextMtl->getDisplay();
  
          mtl::SamplerDesc samplerDesc(mState);
  
          mSamplerState =
              displayMtl->getStateCache().getSamplerState(displayMtl->getMetalDevice(), samplerDesc);
      }
  
      return mSamplerState;
  }
  
  angle::Result SamplerMtl::syncState(const gl::Context *context, const bool dirty)
  {
      if (dirty)
      {
          // Recreate sampler
          mSamplerState = nil;
  
          if (mCompareMode != mState.getCompareMode() || mCompareFunc != mState.getCompareFunc())
          {
              ContextMtl *contextMtl = mtl::GetImpl(context);
  
              mCompareMode = mState.getCompareMode();
              mCompareFunc = mState.getCompareFunc();
  
              // Tell context to rebind textures so that ProgramMtl has a chance to verify
              // depth texture compare mode.
              contextMtl->invalidateCurrentTextures();
          }
      }
      return angle::Result::Continue;
  }
  
  }  // namespace rx
  

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