Hash :
9d737966
        
        Author :
  
        
        Date :
2019-08-14T12:25:12
        
      
Standardize copyright notices to project style
For all "ANGLE Project" copyrights, standardize to the format specified
by the style guide. Changes:
- "Copyright (c)" and "Copyright(c)" changed to just "Copyright".
- Removed the second half of date ranges ("Y1Y1-Y2Y2"->"Y1Y1").
- Fixed a small number of files that had no copyright date using the
  initial commit year from the version control history.
- Fixed one instance of copyright being "The ANGLE Project" rather than
  "The ANGLE Project Authors"
These changes are applied both to the copyright of source file, and
where applicable to copyright statements that are generated by
templates.
BUG=angleproject:3811
Change-Id: I973dd65e4ef9deeba232d5be74c768256a0eb2e5
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754397
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
      
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//
// Copyright 2016 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.
//
// TextureFunctionHLSL: Class for writing implementations of ESSL texture functions into HLSL
// output. Some of the implementations are straightforward and just call the HLSL equivalent of the
// ESSL texture function, others do more work to emulate ESSL texture sampling or size query
// behavior.
//
#ifndef COMPILER_TRANSLATOR_TEXTUREFUNCTIONHLSL_H_
#define COMPILER_TRANSLATOR_TEXTUREFUNCTIONHLSL_H_
#include <set>
#include "GLSLANG/ShaderLang.h"
#include "compiler/translator/BaseTypes.h"
#include "compiler/translator/Common.h"
#include "compiler/translator/InfoSink.h"
namespace sh
{
class TextureFunctionHLSL final : angle::NonCopyable
{
  public:
    struct TextureFunction
    {
        // See ESSL 3.00.6 section 8.8 for reference about what the different methods below do.
        enum Method
        {
            IMPLICIT,  // Mipmap LOD determined implicitly (standard lookup)
            BIAS,
            LOD,
            LOD0,
            LOD0BIAS,
            SIZE,  // textureSize()
            FETCH,
            GRAD,
            GATHER
        };
        ImmutableString name() const;
        bool operator<(const TextureFunction &rhs) const;
        const char *getReturnType() const;
        TBasicType sampler;
        int coords;
        bool proj;
        bool offset;
        Method method;
    };
    // Returns the name of the texture function implementation to call.
    // The name that's passed in is the name of the GLSL texture function that it should implement.
    ImmutableString useTextureFunction(const ImmutableString &name,
                                       TBasicType samplerType,
                                       int coords,
                                       size_t argumentCount,
                                       bool lod0,
                                       sh::GLenum shaderType);
    void textureFunctionHeader(TInfoSinkBase &out,
                               const ShShaderOutput outputType,
                               bool getDimensionsIgnoresBaseLevel);
  private:
    typedef std::set<TextureFunction> TextureFunctionSet;
    TextureFunctionSet mUsesTexture;
};
}  // namespace sh
#endif  // COMPILER_TRANSLATOR_TEXTUREFUNCTIONHLSL_H_