kc3-lang/angle/src/libANGLE/renderer/metal/renderermtl_utils.h

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• Hash : b23bf47c
  Author :
  Date : 2023-01-25T18:50:40
  

  Reland "Metal: rewrite default uniforms and uniform blocks"
  
  Instead of rewriting uniforms in shaders to match std140 layout,
  re-pack incoming uniform blocks' std140 packed variables to match
  Metal's layout.
  
  This change intorduces a new BlockLayoutEncoder for Metal types
  The block encoder handles packing typically larger GL types (bools)
  into smaller types, and adding support for more compressed matrix types.
  
  Since we no longer need to do shader-time packing and unpacking of data
  from std140 padded structs, complicated shader transformations have been
  removed. This patch greatly reduces register pressure, especially when
  working with shaders with arrays of previously expanded types. (Vec3's)
  
  Reland: Fix an issue where the default uniform block's final size was not
  aligned to the default uniform block's alignment requirements, causing
  crashes with the debug layer enabled.
  
  Bug: angleproject:7137
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3733524
  Commit-Queue: Kyle Piddington <kpiddington@apple.com>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Kenneth Russell <kbr@chromium.org>
  Change-Id: I89d3b817675486fde73b91b0be0f4c25986d4ba5
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4209867
  

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• src/libANGLE/renderer/metal/renderermtl_utils.h

• //
  // Copyright 2023 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.
  //
  // renderermtl_utils:
  //   Helper methods pertaining to the Metal backend.
  //
  
  #ifndef LIBANGLE_RENDERER_METAL_RENDERERMTL_UTILS_H_
  #define LIBANGLE_RENDERER_METAL_RENDERERMTL_UTILS_H_
  
  #include <cstdint>
  
  #include <limits>
  #include <map>
  
  #include "GLSLANG/ShaderLang.h"
  #include "common/angleutils.h"
  #include "common/utilities.h"
  #include "libANGLE/angletypes.h"
  
  namespace rx
  {
  namespace mtl
  {
  
  template <int cols, int rows>
  struct SetFloatUniformMatrixMetal
  {
      static void Run(unsigned int arrayElementOffset,
                      unsigned int elementCount,
                      GLsizei countIn,
                      GLboolean transpose,
                      const GLfloat *value,
                      uint8_t *targetData);
  };
  
  // Helper method to de-tranpose a matrix uniform for an API query, Metal Version
  void GetMatrixUniformMetal(GLenum type, GLfloat *dataOut, const GLfloat *source, bool transpose);
  
  template <typename NonFloatT>
  void GetMatrixUniformMetal(GLenum type,
                             NonFloatT *dataOut,
                             const NonFloatT *source,
                             bool transpose);
  }  // namespace mtl
  }  // namespace rx
  #endif
  

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