kc3-lang/angle/src/libANGLE/renderer/vulkan/SamplerVk.cpp

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• Hash : f61272fb
  Author :
  Date : 2020-06-17T11:38:37
  

  Add support for VK_KHR_sampler_ycbcr_conversion
  
  This adds ability for applications to import Android Hardware Buffers
  (AHBs) as OpenGL images which in turn can be sampled from and/or
  written.
  
  This was specifically tested with the common use case of importing a
  buffer created by an media decoder and using that as a texture source to
  include that video content on the screen. Tested with:
  - Angry Birds 2 video player (for ads) requires YUV conversion.
  - Basic Media Decoder example:
      https://github.com/android/media-samples/tree/master/BasicMediaDecoder
  
  Bug: b/155487768
  Change-Id: I9255450f81aa4daa2aace7205d4f6c3f225abcca
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2175103
  Commit-Queue: Courtney Goeltzenleuchter <courtneygo@google.com>
  Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com>
  Reviewed-by: Tim Van Patten <timvp@google.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/vulkan/SamplerVk.cpp

• //
  // Copyright 2016 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.
  //
  // SamplerVk.cpp:
  //    Implements the class methods for SamplerVk.
  //
  
  #include "libANGLE/renderer/vulkan/SamplerVk.h"
  
  #include "common/debug.h"
  #include "libANGLE/Context.h"
  #include "libANGLE/renderer/vulkan/vk_utils.h"
  
  namespace rx
  {
  
  SamplerVk::SamplerVk(const gl::SamplerState &state) : SamplerImpl(state), mSerial{} {}
  
  SamplerVk::~SamplerVk() = default;
  
  void SamplerVk::onDestroy(const gl::Context *context)
  {
      mSampler.reset();
  }
  
  angle::Result SamplerVk::syncState(const gl::Context *context, const bool dirty)
  {
      ContextVk *contextVk = vk::GetImpl(context);
  
      RendererVk *renderer = contextVk->getRenderer();
      if (mSampler.valid())
      {
          if (!dirty)
          {
              return angle::Result::Continue;
          }
          mSampler.reset();
      }
  
      vk::SamplerDesc desc(mState, false, 0);
      ANGLE_TRY(renderer->getSamplerCache().getSampler(contextVk, desc, &mSampler));
  
      // Regenerate the serial on a sampler change.
      mSerial = contextVk->generateTextureSerial();
      return angle::Result::Continue;
  }
  
  }  // namespace rx
  

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