kc3-lang/angle/src/libANGLE/renderer/gl/SamplerGL.cpp

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• Author : Jamie Madill
  Date : 2018-09-12 11:03:05
  Hash : 097d3c0c
  Message : Make SamplerState a contained class. This will more easily allow us to use a cached completeness comparison value. The cached value only gets updated on certain setters. Bug: angleproject:2763 Change-Id: Ib80db8517560617087ae8360f7af69d6c2392b76 Reviewed-on: https://chromium-review.googlesource.com/1171507 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Frank Henigman <fjhenigman@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>

• src/libANGLE/renderer/gl/SamplerGL.cpp

• //
  // Copyright 2014 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.
  //
  
  // SamplerGL.cpp: Defines the rx::SamplerGL class, an implementation of SamplerImpl.
  
  #include "libANGLE/renderer/gl/SamplerGL.h"
  
  #include "libANGLE/renderer/gl/FunctionsGL.h"
  #include "libANGLE/renderer/gl/StateManagerGL.h"
  
  namespace
  {
  
  template <typename Getter, typename Setter>
  static inline void SyncSamplerStateMember(const rx::FunctionsGL *functions,
                                            GLuint sampler,
                                            const gl::SamplerState &newState,
                                            gl::SamplerState &curState,
                                            GLenum name,
                                            Getter getter,
                                            Setter setter)
  {
      if ((curState.*getter)() != (newState.*getter)())
      {
          (curState.*setter)((newState.*getter)());
          functions->samplerParameterf(sampler, name, static_cast<GLfloat>((curState.*getter)()));
      }
  }
  }
  
  namespace rx
  {
  
  SamplerGL::SamplerGL(const gl::SamplerState &state,
                       const FunctionsGL *functions,
                       StateManagerGL *stateManager)
      : SamplerImpl(state),
        mFunctions(functions),
        mStateManager(stateManager),
        mAppliedSamplerState(),
        mSamplerID(0)
  {
      mFunctions->genSamplers(1, &mSamplerID);
  }
  
  SamplerGL::~SamplerGL()
  {
      mStateManager->deleteSampler(mSamplerID);
      mSamplerID = 0;
  }
  
  void SamplerGL::syncState(const gl::Context *context)
  {
      // clang-format off
      SyncSamplerStateMember(mFunctions, mSamplerID, mState, mAppliedSamplerState, GL_TEXTURE_MIN_FILTER, &gl::SamplerState::getMinFilter, &gl::SamplerState::setMinFilter);
      SyncSamplerStateMember(mFunctions, mSamplerID, mState, mAppliedSamplerState, GL_TEXTURE_MAG_FILTER, &gl::SamplerState::getMagFilter, &gl::SamplerState::setMagFilter);
      SyncSamplerStateMember(mFunctions, mSamplerID, mState, mAppliedSamplerState, GL_TEXTURE_WRAP_S, &gl::SamplerState::getWrapS, &gl::SamplerState::setWrapS);
      SyncSamplerStateMember(mFunctions, mSamplerID, mState, mAppliedSamplerState, GL_TEXTURE_WRAP_T, &gl::SamplerState::getWrapT, &gl::SamplerState::setWrapT);
      SyncSamplerStateMember(mFunctions, mSamplerID, mState, mAppliedSamplerState, GL_TEXTURE_WRAP_R, &gl::SamplerState::getWrapR, &gl::SamplerState::setWrapR);
      SyncSamplerStateMember(mFunctions, mSamplerID, mState, mAppliedSamplerState, GL_TEXTURE_MAX_ANISOTROPY_EXT, &gl::SamplerState::getMaxAnisotropy, &gl::SamplerState::setMaxAnisotropy);
      SyncSamplerStateMember(mFunctions, mSamplerID, mState, mAppliedSamplerState, GL_TEXTURE_MIN_LOD, &gl::SamplerState::getMinLod, &gl::SamplerState::setMinLod);
      SyncSamplerStateMember(mFunctions, mSamplerID, mState, mAppliedSamplerState, GL_TEXTURE_MAX_LOD, &gl::SamplerState::getMaxLod, &gl::SamplerState::setMaxLod);
      SyncSamplerStateMember(mFunctions, mSamplerID, mState, mAppliedSamplerState, GL_TEXTURE_COMPARE_MODE, &gl::SamplerState::getCompareMode, &gl::SamplerState::setCompareMode);
      SyncSamplerStateMember(mFunctions, mSamplerID, mState, mAppliedSamplerState, GL_TEXTURE_COMPARE_FUNC, &gl::SamplerState::getCompareFunc, &gl::SamplerState::setCompareFunc);
      SyncSamplerStateMember(mFunctions, mSamplerID, mState, mAppliedSamplerState, GL_TEXTURE_SRGB_DECODE_EXT, &gl::SamplerState::getSRGBDecode, &gl::SamplerState::setSRGBDecode);
      // clang-format on
  }
  
  GLuint SamplerGL::getSamplerID() const
  {
      return mSamplerID;
  }
  }