kc3-lang/angle/src/compiler/translator/tree_ops/spirv/ClampGLLayer.h

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• Hash : 47c66901
  Author :
  Date : 2024-10-21T12:47:22
  

  Vulkan: Set gl_Layer to 0 if the framebuffer is not layered
  
  Bug: angleproject:372390039
  Change-Id: I29067c9488e06f6dd2e90f207fecb843267fb77c
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5949263
  Reviewed-by: Charlie Lao <cclao@google.com>
  Reviewed-by: Yuxin Hu <yuxinhu@google.com>
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/compiler/translator/tree_ops/spirv/ClampGLLayer.h

• //
  // Copyright 2024 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.
  //
  // ClampGLLayer: Set gl_Layer to 0 if framebuffer is not layered.  The GL spec says:
  //
  // > A layer number written by a geometry shader has no effect if the framebuffer is not layered.
  //
  // While the Vulkan spec says:
  //
  // > If the Layer value is less than 0 or greater than or equal to the number of layers in the
  // > framebuffer, then primitives may still be rasterized, fragment shaders may be executed, and the
  // > framebuffer values for all layers are undefined.
  //
  // ANGLE sets gl_Layer to 0 if the framebuffer is not layered in this transformation.
  //
  
  #ifndef COMPILER_TRANSLATOR_TREEOPS_SPIRV_CLAMPGLLAYER_H_
  #define COMPILER_TRANSLATOR_TREEOPS_SPIRV_CLAMPGLLAYER_H_
  
  #include "common/angleutils.h"
  #include "compiler/translator/Compiler.h"
  
  namespace sh
  {
  class TCompiler;
  class TIntermBlock;
  class TSymbolTable;
  class DriverUniform;
  
  [[nodiscard]] bool ClampGLLayer(TCompiler *compiler,
                                  TIntermBlock *root,
                                  TSymbolTable *symbolTable,
                                  const DriverUniform *driverUniforms);
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TREEOPS_SPIRV_CLAMPGLLAYER_H_
  

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