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kc3-lang/angle/src/compiler/translator/tree_util/ReplaceClipCullDistanceVariable.h

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  • Author : Mohan Maiya
    Date : 2021-01-14 08:13:47
    Hash : 9f09435b
    Message : Vulkan: Rename ReplaceClipDistanceVariable files With the addition of EXT_clip_cull_distance extension the files are renamed like so - ReplaceClipDistanceVariable.h -> ReplaceClipCullDistanceVariable.h ReplaceClipDistanceVariable.cpp -> ReplaceClipCullDistanceVariable.cpp Bug: angleproject:5458 Change-Id: I277b2d4b6eea6f2014e10acb251284a159292dbc Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2617572 Commit-Queue: Mohan Maiya <m.maiya@samsung.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>

  • src/compiler/translator/tree_util/ReplaceClipCullDistanceVariable.h 
  • //
// Copyright 2020 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.
//
// ReplaceClipCullDistanceVariable.h: Find any references to gl_ClipDistance or gl_CullDistance and
// replace it with ANGLEClipDistance or ANGLECullDistance.
//

#ifndef COMPILER_TRANSLATOR_TREEUTIL_REPLACECLIPCULLDISTANCEVARIABLE_H_
#define COMPILER_TRANSLATOR_TREEUTIL_REPLACECLIPCULLDISTANCEVARIABLE_H_

#include "GLSLANG/ShaderLang.h"
#include "common/angleutils.h"

namespace sh
{

struct InterfaceBlock;
class TCompiler;
class TIntermBlock;
class TSymbolTable;
class TIntermTyped;

// Replace every gl_ClipDistance assignment with assignment to "ANGLEClipDistance",
// then at the end of shader re-assign the values of this global variable to gl_ClipDistance.
// This to solve some complex usages such as user passing gl_ClipDistance as output reference
// to a function.
// Furthermore, at the end shader, some disabled gl_ClipDistance[i] can be skipped from the
// assignment.
ANGLE_NO_DISCARD bool ReplaceClipDistanceAssignments(TCompiler *compiler,
                                                     TIntermBlock *root,
                                                     TSymbolTable *symbolTable,
                                                     const GLenum shaderType,
                                                     const TIntermTyped *clipDistanceEnableFlags);

ANGLE_NO_DISCARD bool ReplaceCullDistanceAssignments(TCompiler *compiler,
                                                     TIntermBlock *root,
                                                     TSymbolTable *symbolTable,
                                                     const GLenum shaderType);
}  // namespace sh

#endif