kc3-lang/angle/src/common/linux/dma_buf_utils.cpp

• Show log

  Commit

• Hash : d917f771
  Author :
  Date : 2025-09-01T18:44:34
  

  Vulkan: Simplify/Fix DmaBufImageSiblingVkLinux import probing
  
  Remove the multi-format probing logic in DmaBufImageSiblingVkLinux.
  Use the renderer’s base VkFormat and a single check with
  VkImageFormatListCreateInfo, instead of looping over mVkFormats with
  mutable/non-mutable combinations. This cuts down redundant queries
  and streamlines initImpl.
  
  Also, this CL fixes some issues occur when mapping DRM format into
  Vulkan backend formats.
  - Default to SampleOnly but prefer Renderable if the modifier properties
  exposes both sampling and rendering, since usage at import time is
  unknown.
  - Fix emulated-format handling issue by using getIntendedFormatID() and
  getActualImageFormatID() instead of deriving both IDs from VkFormat with
  GetFormatIDFromVkFormat() directly.
  
  Bug: angleproject:442313595
  Bug: angleproject:426475684
  Change-Id: Ia38d8e7901da10948a2c15eb284b055359dd4a2d
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6904888
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: mohan maiya <m.maiya@samsung.com>
  

Download

• src/common/linux/dma_buf_utils.cpp

• //
  // Copyright 2021 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.
  //
  
  // dma_buf_utils.cpp: Utilities to interact with Linux dma bufs.
  
  #include "dma_buf_utils.h"
  
  #include "common/debug.h"
  
  #include <sys/stat.h>
  #include <sys/time.h>
  #include <sys/types.h>
  #include <unistd.h>
  
  #include <array>
  
  namespace angle
  {
  GLenum DrmFourCCFormatToGLInternalFormat(int fourccFormat, bool *isYUV)
  {
      *isYUV = false;
  
      switch (fourccFormat)
      {
          case DRM_FORMAT_R8:
              return GL_R8;
          case DRM_FORMAT_R16:
              return GL_R16_EXT;
          case DRM_FORMAT_GR88:
              return GL_RG8_EXT;
          case DRM_FORMAT_ABGR8888:
              return GL_RGBA8;
          case DRM_FORMAT_XBGR8888:
              return GL_RGBX8_ANGLE;
          case DRM_FORMAT_ARGB8888:
              return GL_BGRA8_EXT;
          case DRM_FORMAT_XRGB8888:
              return GL_BGRX8_ANGLEX;
          case DRM_FORMAT_ABGR2101010:
          case DRM_FORMAT_ARGB2101010:
              return GL_RGB10_A2_EXT;
          case DRM_FORMAT_ABGR16161616F:
              return GL_RGBA16F_EXT;
          case DRM_FORMAT_RGB565:
              return GL_RGB565;
          case DRM_FORMAT_NV12:
          case DRM_FORMAT_YVU420:
          case DRM_FORMAT_P010:
              *isYUV = true;
              return GL_RGB8;
          default:
              UNREACHABLE();
              WARN() << "Unknown dma_buf format " << fourccFormat
                     << " used to initialize an EGL image.";
              return GL_RGB8;
      }
  }
  
  uint32_t GLInternalFormatToDrmFourCCFormat(GLenum internalFormat)
  {
      switch (internalFormat)
      {
          case GL_R8:
              return DRM_FORMAT_R8;
          case GL_RGB8:
              return DRM_FORMAT_GR88;
          case GL_RGB565:
              return DRM_FORMAT_RGB565;
          case GL_RGBA8:
              return DRM_FORMAT_ABGR8888;
          case GL_BGRA8_EXT:
              return DRM_FORMAT_ARGB8888;
          case GL_BGRX8_ANGLEX:
              return DRM_FORMAT_XRGB8888;
          case GL_RGBX8_ANGLE:
              return DRM_FORMAT_XBGR8888;
          case GL_RGB10_A2:
              return DRM_FORMAT_ABGR2101010;
          default:
              WARN() << "Unknown internalFormat: " << internalFormat << ". Treating as 0";
              return 0;
      }
  }
  
  #if defined(ANGLE_ENABLE_VULKAN)
  std::vector<int> VkFormatToDrmFourCCFormat(VkFormat format)
  {
      switch (format)
      {
          case VK_FORMAT_R8_UNORM:
          case VK_FORMAT_R8_SRGB:
              return {DRM_FORMAT_R8};
          case VK_FORMAT_R16_UNORM:
              return {DRM_FORMAT_R16};
          case VK_FORMAT_R8G8_UNORM:
          case VK_FORMAT_R8G8_SRGB:
              return {DRM_FORMAT_GR88};
          case VK_FORMAT_R8G8B8_UNORM:
          case VK_FORMAT_R8G8B8_SRGB:
              return {DRM_FORMAT_BGR888};
          case VK_FORMAT_B8G8R8_UNORM:
          case VK_FORMAT_B8G8R8_SRGB:
              return {DRM_FORMAT_RGB888};
          case VK_FORMAT_R8G8B8A8_UNORM:
          case VK_FORMAT_R8G8B8A8_SRGB:
              return {DRM_FORMAT_ABGR8888, DRM_FORMAT_XBGR8888};
          case VK_FORMAT_B8G8R8A8_UNORM:
          case VK_FORMAT_B8G8R8A8_SRGB:
              return {DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB8888};
          case VK_FORMAT_A2B10G10R10_UNORM_PACK32:
              return {DRM_FORMAT_ARGB2101010};
          case VK_FORMAT_A2R10G10B10_UNORM_PACK32:
              return {DRM_FORMAT_ABGR2101010};
          case VK_FORMAT_B5G6R5_UNORM_PACK16:
              return {DRM_FORMAT_RGB565};
          default:
              return {};
      }
  }
  
  // Maps a DRM FourCC formats to a view-compatible set of VkFormats.
  // Returns only the base format's linear/sRGB pair when both exist.
  // Callers expect these formats to be mutually compatible and pass the list
  // to VkImageFormatListCreateInfo for image creation.
  std::vector<VkFormat> DrmFourCCFormatToVkFormats(int fourccFormat)
  {
      switch (fourccFormat)
      {
          case DRM_FORMAT_R8:
              return {VK_FORMAT_R8_UNORM, VK_FORMAT_R8_SRGB};
          case DRM_FORMAT_R16:
              return {VK_FORMAT_R16_UNORM};
          case DRM_FORMAT_GR88:
              return {VK_FORMAT_R8G8_UNORM, VK_FORMAT_R8G8_SRGB};
          case DRM_FORMAT_BGR888:
              return {VK_FORMAT_R8G8B8_UNORM, VK_FORMAT_R8G8B8_SRGB};
          case DRM_FORMAT_RGB888:
              return {VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_B8G8R8_SRGB};
          case DRM_FORMAT_ABGR8888:
          case DRM_FORMAT_XBGR8888:
              return {VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_R8G8B8A8_SRGB};
          case DRM_FORMAT_ARGB8888:
          case DRM_FORMAT_XRGB8888:
              return {VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_B8G8R8A8_SRGB};
          case DRM_FORMAT_ABGR2101010:
              return {VK_FORMAT_A2R10G10B10_UNORM_PACK32};
          case DRM_FORMAT_ARGB2101010:
              return {VK_FORMAT_A2B10G10R10_UNORM_PACK32};
          case DRM_FORMAT_RGB565:
              return {VK_FORMAT_B5G6R5_UNORM_PACK16};
          case DRM_FORMAT_NV12:
              return {VK_FORMAT_G8_B8R8_2PLANE_420_UNORM};
          default:
              WARN() << "Unknown dma_buf format " << fourccFormat
                     << " used to initialize an EGL image.";
              return {};
      }
  }
  
  #endif  // ANGLE_ENABLE_VULKAN
  
  }  // namespace angle
  

Download