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

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  Commit

• Author : Geoff Lang
  Date : 2016-10-19 14:07:52
  Hash : 81c6b577
  Message : Implement GL_EXT_texture_sRGB_decode for GL. BUG=angleproject:1383 BUG=655247 Change-Id: I409b12e1ae418530576de5ec9ce26b7be5d91650 Reviewed-on: https://chromium-review.googlesource.com/400807 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Geoff Lang <geofflang@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 T>
  static inline void SyncSamplerStateMember(const rx::FunctionsGL *functions,
                                            GLuint sampler,
                                            const gl::SamplerState &newState,
                                            gl::SamplerState &curState,
                                            GLenum name,
                                            T(gl::SamplerState::*samplerMember))
  {
      if (curState.*samplerMember != newState.*samplerMember)
      {
          curState.*samplerMember = newState.*samplerMember;
          functions->samplerParameterf(sampler, name, static_cast<GLfloat>(curState.*samplerMember));
      }
  }
  }
  
  namespace rx
  {
  
  SamplerGL::SamplerGL(const FunctionsGL *functions, StateManagerGL *stateManager)
      : SamplerImpl(),
        mFunctions(functions),
        mStateManager(stateManager),
        mAppliedSamplerState(),
        mSamplerID(0)
  {
      mFunctions->genSamplers(1, &mSamplerID);
  }
  
  SamplerGL::~SamplerGL()
  {
      mStateManager->deleteSampler(mSamplerID);
      mSamplerID = 0;
  }
  
  void SamplerGL::syncState(const gl::SamplerState &samplerState) const
  {
      // clang-format off
      SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_MIN_FILTER, &gl::SamplerState::minFilter);
      SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_MAG_FILTER, &gl::SamplerState::magFilter);
      SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_WRAP_S, &gl::SamplerState::wrapS);
      SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_WRAP_T, &gl::SamplerState::wrapT);
      SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_WRAP_R, &gl::SamplerState::wrapR);
      SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_MAX_ANISOTROPY_EXT, &gl::SamplerState::maxAnisotropy);
      SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_MIN_LOD, &gl::SamplerState::minLod);
      SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_MAX_LOD, &gl::SamplerState::maxLod);
      SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_COMPARE_MODE, &gl::SamplerState::compareMode);
      SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_COMPARE_FUNC, &gl::SamplerState::compareFunc);
      SyncSamplerStateMember(mFunctions, mSamplerID, samplerState, mAppliedSamplerState, GL_TEXTURE_SRGB_DECODE_EXT, &gl::SamplerState::sRGBDecode);
      // clang-format on
  }
  
  GLuint SamplerGL::getSamplerID() const
  {
      return mSamplerID;
  }
  }