kc3-lang/angle/src/image_util

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  Commit

• Hash : 716c5d00
  Author :
  Date : 2023-11-13T10:23:10
  

  Vulkan: Add RGB8-to-RGBA8 ubyte loading function
  
    Currently, to update RGB8 on desktop, ANGLE uses memcpy for each
  pixel, which is suboptimal. This CL adds a loading function to improve
  the copy time for RGB textures where RGBA is needed on the hardware.
  
  * Added a specialization to LoadToNative3To4() for unsigned bytes
    using 0xFF as the fourth component.
    * It is optimized for unsigned bytes when converting an RGB format
      to its corresponding RGBA format, e.g., RGB8 to RGBA8.
    * It uses uint32_t operations to speed up the process.
  
  * Added unit tests for the specialized LoadToNative3To4.
    * LoadToNative_unittest.cpp
  
  * Added perf test for RGB8 image allocation and loading.
    * RGBImageAllocationBenchmark in RGBImageAllocation.cpp.
  
    * RGBImageAllocationBenchmark shows some improvement in cpu_time
      and wall_time on a Linux and a Windows device. (Results below using
      aligned source pointer and texture size of 2048):
      * On Windows: +~85% cpu_time, +~71% wall_time
      * On Linux:   +~26% cpu_time, +~27% wall_time
  
  Bug: b/308177124
  Change-Id: I421d83f75fdc513b0111dffb0a5d5e74682dd6fb
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4995489
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Charlie Lao <cclao@google.com>
  Commit-Queue: Amirali Abdolrashidi <abdolrashidi@google.com>
  

• Files

• AstcDecompressor.cpp
• AstcDecompressor.h
• AstcDecompressorNoOp.cpp
• AstcDecompressorTestUtils.h
• AstcDecompressor_unittest.cpp
• LoadToNative_unittest.cpp
• copyimage.cpp
• copyimage.h
• copyimage.inc
• generatemip.h
• generatemip.inc
• imageformats.cpp
• imageformats.h
• loadimage.cpp
• loadimage.h
• loadimage.inc
• loadimage_astc.cpp
• loadimage_etc.cpp
• loadimage_paletted.cpp
• storeimage.h
• storeimage_paletted.cpp

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• Git HTTP	https://git.kmx.io/kc3-lang/angle.git
  Git SSH	git@git.kmx.io:kc3-lang/angle.git
  Public access ?	public
  Description	A conformant OpenGL ES implementation for Windows, Mac, Linux, iOS and Android. Homepage Github
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