kc3-lang/angle/src/compiler

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• Hash : e488d8b8
  Author :
  Date : 2020-02-26T16:11:29
  

  Vulkan: Implement Android pre-rotation
  
  As an Android GLES driver on top of Vulkan, ANGLE must pre-rotate
  rendering on behalf of the application.  This involves modifying the
  vertex shader to multiply gl_Position with a mat2 "rotation matrix".
  Not doing so means that SurfaceFlinger (SF) will perform a costly
  rotation blit before presenting every image.  Setting
  WindowSurfaceVk::mPreTransform to mCurrentTransform tells SF to not do
  the blit.
  
  When the surface is rotated 90 or 270 degrees, the width and height
  must be swapped for:
  
  - The swapchain images, and for any depth, stencil, and/or multisample
    attachments used with the swapchain image.
  
  - The viewport, scissor, and render area.
  
  Because the Metal back-end shares the TranslatorVulkan, it will define
  the same preRotation (mat2) DriverUniform that is used for Vulkan.
  
  Bug: angleproject:3502
  Change-Id: I968dbe8869ba0f50de18dd41f1195e847c06b545
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2038272
  Commit-Queue: Ian Elliott <ianelliott@google.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

• Files

• fuzz/
• generate_parser_tools.py
• preprocessor/
• translator/

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  Description	A conformant OpenGL ES implementation for Windows, Mac, Linux, iOS and Android. Homepage Github
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