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Create a base GLSL front-end from the 3Dlabs glslang front-end from 20-Sep-2005.

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git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@19944 e7fa87d3-cd2b-0410-9028-fcbf551c1848
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John Kessenich 2012-12-12 21:15:54 +00:00
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glslang/Include/BaseTypes.h Normal file
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//
//Copyright (C) 2002-2005 3Dlabs Inc. Ltd.
//All rights reserved.
//
//Redistribution and use in source and binary forms, with or without
//modification, are permitted provided that the following conditions
//are met:
//
// Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
//
// Neither the name of 3Dlabs Inc. Ltd. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
//"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
//LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
//FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
//COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
//INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
//BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
//LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
//CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
//LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
//ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
//POSSIBILITY OF SUCH DAMAGE.
//
#ifndef _BASICTYPES_INCLUDED_
#define _BASICTYPES_INCLUDED_
//
// Basic type. Arrays, vectors, etc., are orthogonal to this.
//
enum TBasicType {
EbtVoid,
EbtFloat,
EbtInt,
EbtBool,
EbtGuardSamplerBegin, // non type: see implementation of IsSampler()
EbtSampler1D,
EbtSampler2D,
EbtSampler3D,
EbtSamplerCube,
EbtSampler1DShadow,
EbtSampler2DShadow,
EbtSamplerRect, // ARB_texture_rectangle
EbtSamplerRectShadow, // ARB_texture_rectangle
EbtGuardSamplerEnd, // non type: see implementation of IsSampler()
EbtStruct,
EbtAddress, // should be deprecated??
};
__inline bool IsSampler(TBasicType type)
{
return type > EbtGuardSamplerBegin && type < EbtGuardSamplerEnd;
}
//
// Qualifiers and built-ins. These are mainly used to see what can be read
// or written, and by the machine dependent translator to know which registers
// to allocate variables in. Since built-ins tend to go to different registers
// than varying or uniform, it makes sense they are peers, not sub-classes.
//
enum TQualifier {
EvqTemporary, // For temporaries (within a function), read/write
EvqGlobal, // For globals read/write
EvqConst, // User defined constants and non-output parameters in functions
EvqAttribute, // Readonly
EvqVaryingIn, // readonly, fragment shaders only
EvqVaryingOut, // vertex shaders only read/write
EvqUniform, // Readonly, vertex and fragment
// pack/unpack input and output
EvqInput,
EvqOutput,
// parameters
EvqIn,
EvqOut,
EvqInOut,
EvqConstReadOnly,
// built-ins written by vertex shader
EvqPosition,
EvqPointSize,
EvqClipVertex,
// built-ins read by fragment shader
EvqFace,
EvqFragCoord,
// built-ins written by fragment shader
EvqFragColor,
EvqFragDepth,
// end of list
EvqLast,
};
//
// This is just for debug print out, carried along with the definitions above.
//
__inline const char* getQualifierString(TQualifier q)
{
switch (q) {
case EvqTemporary: return "Temporary"; break;
case EvqGlobal: return "Global"; break;
case EvqConst: return "const"; break;
case EvqConstReadOnly: return "const"; break;
case EvqAttribute: return "attribute"; break;
case EvqVaryingIn: return "varying"; break;
case EvqVaryingOut: return "varying"; break;
case EvqUniform: return "uniform"; break;
case EvqIn: return "in"; break;
case EvqOut: return "out"; break;
case EvqInOut: return "inout"; break;
case EvqInput: return "input"; break;
case EvqOutput: return "output"; break;
case EvqPosition: return "Position"; break;
case EvqPointSize: return "PointSize"; break;
case EvqClipVertex: return "ClipVertex"; break;
case EvqFace: return "Face"; break;
case EvqFragCoord: return "FragCoord"; break;
case EvqFragColor: return "FragColor"; break;
case EvqFragDepth: return "FragDepth"; break;
default: return "unknown qualifier";
}
}
#endif // _BASICTYPES_INCLUDED_