kc3-lang/angle/src/libANGLE/renderer/gl/egl/DmaBufImageSiblingEGL.cpp

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• Hash : 458389f2
  Author :
  Date : 2021-09-02T22:41:40
  

  Vulkan: Support Linux dma-bufs
  
  This change adds support for EGL_EXT_image_dma_buf_import and
  EGL_EXT_image_dma_buf_import_modifiers on top of Vulkan's
  VK_EXT_external_memory_dma_buf and VK_EXT_image_drm_format_modifier.
  
  Bug: angleproject:6248
  Change-Id: I581987f88e9ddcf351dc721f499f63912dca05f9
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3145610
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/libANGLE/renderer/gl/egl/DmaBufImageSiblingEGL.cpp

• //
  // Copyright 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.
  //
  
  // DmaBufImageSiblingEGL.cpp: Defines the DmaBufImageSiblingEGL to wrap EGL images
  // created from dma_buf objects
  
  #include "libANGLE/renderer/gl/egl/DmaBufImageSiblingEGL.h"
  
  #include "common/linux/dma_buf_utils.h"
  
  namespace rx
  {
  DmaBufImageSiblingEGL::DmaBufImageSiblingEGL(const egl::AttributeMap &attribs)
      : mAttribs(attribs), mFormat(GL_NONE), mYUV(false), mHasProtectedContent(false)
  {
      ASSERT(mAttribs.contains(EGL_WIDTH));
      mSize.width = mAttribs.getAsInt(EGL_WIDTH);
      ASSERT(mAttribs.contains(EGL_HEIGHT));
      mSize.height         = mAttribs.getAsInt(EGL_HEIGHT);
      mSize.depth          = 1;
      mHasProtectedContent = false;
  
      int fourCCFormat = mAttribs.getAsInt(EGL_LINUX_DRM_FOURCC_EXT);
      mFormat          = gl::Format(angle::DrmFourCCFormatToGLInternalFormat(fourCCFormat, &mYUV));
  }
  
  DmaBufImageSiblingEGL::~DmaBufImageSiblingEGL() {}
  
  egl::Error DmaBufImageSiblingEGL::initialize(const egl::Display *display)
  {
      return egl::NoError();
  }
  
  gl::Format DmaBufImageSiblingEGL::getFormat() const
  {
      return mFormat;
  }
  
  bool DmaBufImageSiblingEGL::isRenderable(const gl::Context *context) const
  {
      return true;
  }
  
  bool DmaBufImageSiblingEGL::isTexturable(const gl::Context *context) const
  {
      return true;
  }
  
  bool DmaBufImageSiblingEGL::isYUV() const
  {
      return mYUV;
  }
  
  bool DmaBufImageSiblingEGL::hasProtectedContent() const
  {
      return mHasProtectedContent;
  }
  
  gl::Extents DmaBufImageSiblingEGL::getSize() const
  {
      return mSize;
  }
  
  size_t DmaBufImageSiblingEGL::getSamples() const
  {
      return 0;
  }
  
  EGLClientBuffer DmaBufImageSiblingEGL::getBuffer() const
  {
      return nullptr;
  }
  
  void DmaBufImageSiblingEGL::getImageCreationAttributes(std::vector<EGLint> *outAttributes) const
  {
      EGLenum kForwardedAttribs[] = {EGL_WIDTH,
                                     EGL_HEIGHT,
                                     EGL_PROTECTED_CONTENT_EXT,
                                     EGL_LINUX_DRM_FOURCC_EXT,
                                     EGL_DMA_BUF_PLANE0_FD_EXT,
                                     EGL_DMA_BUF_PLANE0_OFFSET_EXT,
                                     EGL_DMA_BUF_PLANE0_PITCH_EXT,
                                     EGL_DMA_BUF_PLANE1_FD_EXT,
                                     EGL_DMA_BUF_PLANE1_OFFSET_EXT,
                                     EGL_DMA_BUF_PLANE1_PITCH_EXT,
                                     EGL_DMA_BUF_PLANE2_FD_EXT,
                                     EGL_DMA_BUF_PLANE2_OFFSET_EXT,
                                     EGL_DMA_BUF_PLANE2_PITCH_EXT,
                                     EGL_YUV_COLOR_SPACE_HINT_EXT,
                                     EGL_SAMPLE_RANGE_HINT_EXT,
                                     EGL_YUV_CHROMA_HORIZONTAL_SITING_HINT_EXT,
                                     EGL_YUV_CHROMA_VERTICAL_SITING_HINT_EXT,
  
                                     EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT,
                                     EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT,
                                     EGL_DMA_BUF_PLANE1_MODIFIER_LO_EXT,
                                     EGL_DMA_BUF_PLANE1_MODIFIER_HI_EXT,
                                     EGL_DMA_BUF_PLANE2_MODIFIER_LO_EXT,
                                     EGL_DMA_BUF_PLANE2_MODIFIER_HI_EXT,
                                     EGL_DMA_BUF_PLANE3_FD_EXT,
                                     EGL_DMA_BUF_PLANE3_OFFSET_EXT,
                                     EGL_DMA_BUF_PLANE3_PITCH_EXT,
                                     EGL_DMA_BUF_PLANE3_MODIFIER_LO_EXT,
                                     EGL_DMA_BUF_PLANE3_MODIFIER_HI_EXT};
  
      for (EGLenum forwardedAttrib : kForwardedAttribs)
      {
          if (mAttribs.contains(forwardedAttrib))
          {
              outAttributes->push_back(forwardedAttrib);
              outAttributes->push_back(mAttribs.getAsInt(forwardedAttrib));
          }
      }
  }
  
  }  // namespace rx
  

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