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//
//Copyright (C) 2002-2005 3Dlabs Inc. Ltd.
//Copyright (C) 2012-2013 LunarG, Inc.
//
//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_
namespace glslang {
//
// Basic type. Arrays, vectors, sampler details, etc., are orthogonal to this.
//
enum TBasicType {
EbtVoid,
EbtFloat,
EbtDouble,
EbtInt,
EbtUint,
EbtInt64,
EbtUint64,
EbtBool,
EbtAtomicUint,
EbtSampler,
EbtStruct,
EbtBlock,
EbtNumTypes
};
//
// Storage qualifiers. Should align with different kinds of storage or
// resource or GLSL storage qualifier. Expansion is deprecated.
//
// N.B.: You probably DON'T want to add anything here, but rather just add it
// to the built-in variables. See the comment above TBuiltInVariable.
//
// A new built-in variable will normally be an existing qualifier, like 'in', 'out', etc.
// DO NOT follow the design pattern of, say EvqInstanceId, etc.
//
enum TStorageQualifier {
EvqTemporary, // For temporaries (within a function), read/write
EvqGlobal, // For globals read/write
EvqConst, // User-defined constant values, will be semantically constant and constant folded
EvqVaryingIn, // pipeline input, read only, also supercategory for all built-ins not included in this enum (see TBuiltInVariable)
EvqVaryingOut, // pipeline output, read/write, also supercategory for all built-ins not included in this enum (see TBuiltInVariable)
EvqUniform, // read only, shared with app
EvqBuffer, // read/write, shared with app
EvqShared, // compute shader's read/write 'shared' qualifier
// parameters
EvqIn, // also, for 'in' in the grammar before we know if it's a pipeline input or an 'in' parameter
EvqOut, // also, for 'out' in the grammar before we know if it's a pipeline output or an 'out' parameter
EvqInOut,
EvqConstReadOnly, // input; also other read-only types having neither a constant value nor constant-value semantics
// built-ins read by vertex shader
EvqVertexId,
EvqInstanceId,
// built-ins written by vertex shader
EvqPosition,
EvqPointSize,
EvqClipVertex,
// built-ins read by fragment shader
EvqFace,
EvqFragCoord,
EvqPointCoord,
// built-ins written by fragment shader
EvqFragColor,
EvqFragDepth,
// end of list
EvqLast
};
//
// Subcategories of the TStorageQualifier, simply to give a direct mapping
// between built-in variable names and an numerical value (the enum).
//
// For backward compatibility, there is some redundancy between the
// TStorageQualifier and these. Existing members should both be maintained accurately.
// However, any new built-in variable (and any existing non-redundant one)
// must follow the pattern that the specific built-in is here, and only its
// general qualifier is in TStorageQualifier.
//
// Something like gl_Position, which is sometimes 'in' and sometimes 'out'
// shows up as two different built-in variables in a single stage, but
// only has a single enum in TBuiltInVariable, so both the
// TStorageQualifier and the TBuitinVariable are needed to distinguish
// between them.
//
enum TBuiltInVariable {
EbvNone,
EbvNumWorkGroups,
EbvWorkGroupSize,
EbvWorkGroupId,
EbvLocalInvocationId,
EbvGlobalInvocationId,
EbvLocalInvocationIndex,
EbvSubGroupSize,
EbvSubGroupInvocation,
EbvSubGroupEqMask,
EbvSubGroupGeMask,
EbvSubGroupGtMask,
EbvSubGroupLeMask,
EbvSubGroupLtMask,
EbvVertexId,
EbvInstanceId,
EbvVertexIndex,
EbvInstanceIndex,
EbvBaseVertex,
EbvBaseInstance,
EbvDrawId,
EbvPosition,
EbvPointSize,
EbvClipVertex,
EbvClipDistance,
EbvCullDistance,
EbvNormal,
EbvVertex,
EbvMultiTexCoord0,
EbvMultiTexCoord1,
EbvMultiTexCoord2,
EbvMultiTexCoord3,
EbvMultiTexCoord4,
EbvMultiTexCoord5,
EbvMultiTexCoord6,
EbvMultiTexCoord7,
EbvFrontColor,
EbvBackColor,
EbvFrontSecondaryColor,
EbvBackSecondaryColor,
EbvTexCoord,
EbvFogFragCoord,
EbvInvocationId,
EbvPrimitiveId,
EbvLayer,
EbvViewportIndex,
EbvPatchVertices,
EbvTessLevelOuter,
EbvTessLevelInner,
EbvBoundingBox,
EbvTessCoord,
EbvColor,
EbvSecondaryColor,
EbvFace,
EbvFragCoord,
EbvPointCoord,
EbvFragColor,
EbvFragData,
EbvFragDepth,
EbvSampleId,
EbvSamplePosition,
EbvSampleMask,
EbvHelperInvocation,
EbvLast
};
// These will show up in error messages
__inline const char* GetStorageQualifierString(TStorageQualifier q)
{
switch (q) {
case EvqTemporary: return "temp"; break;
case EvqGlobal: return "global"; break;
case EvqConst: return "const"; break;
case EvqConstReadOnly: return "const (read only)"; break;
case EvqVaryingIn: return "in"; break;
case EvqVaryingOut: return "out"; break;
case EvqUniform: return "uniform"; break;
case EvqBuffer: return "buffer"; break;
case EvqShared: return "shared"; break;
case EvqIn: return "in"; break;
case EvqOut: return "out"; break;
case EvqInOut: return "inout"; break;
case EvqVertexId: return "gl_VertexId"; break;
case EvqInstanceId: return "gl_InstanceId"; break;
case EvqPosition: return "gl_Position"; break;
case EvqPointSize: return "gl_PointSize"; break;
case EvqClipVertex: return "gl_ClipVertex"; break;
case EvqFace: return "gl_FrontFacing"; break;
case EvqFragCoord: return "gl_FragCoord"; break;
case EvqPointCoord: return "gl_PointCoord"; break;
case EvqFragColor: return "fragColor"; break;
case EvqFragDepth: return "gl_FragDepth"; break;
default: return "unknown qualifier";
}
}
__inline const char* GetBuiltInVariableString(TBuiltInVariable v)
{
switch (v) {
case EbvNone: return "";
case EbvNumWorkGroups: return "NumWorkGroups";
case EbvWorkGroupSize: return "WorkGroupSize";
case EbvWorkGroupId: return "WorkGroupID";
case EbvLocalInvocationId: return "LocalInvocationID";
case EbvGlobalInvocationId: return "GlobalInvocationID";
case EbvLocalInvocationIndex: return "LocalInvocationIndex";
case EbvSubGroupSize: return "SubGroupSize";
case EbvSubGroupInvocation: return "SubGroupInvocation";
case EbvSubGroupEqMask: return "SubGroupEqMask";
case EbvSubGroupGeMask: return "SubGroupGeMask";
case EbvSubGroupGtMask: return "SubGroupGtMask";
case EbvSubGroupLeMask: return "SubGroupLeMask";
case EbvSubGroupLtMask: return "SubGroupLtMask";
case EbvVertexId: return "VertexId";
case EbvInstanceId: return "InstanceId";
case EbvVertexIndex: return "VertexIndex";
case EbvInstanceIndex: return "InstanceIndex";
case EbvBaseVertex: return "BaseVertex";
case EbvBaseInstance: return "BaseInstance";
case EbvDrawId: return "DrawId";
case EbvPosition: return "Position";
case EbvPointSize: return "PointSize";
case EbvClipVertex: return "ClipVertex";
case EbvClipDistance: return "ClipDistance";
case EbvCullDistance: return "CullDistance";
case EbvNormal: return "Normal";
case EbvVertex: return "Vertex";
case EbvMultiTexCoord0: return "MultiTexCoord0";
case EbvMultiTexCoord1: return "MultiTexCoord1";
case EbvMultiTexCoord2: return "MultiTexCoord2";
case EbvMultiTexCoord3: return "MultiTexCoord3";
case EbvMultiTexCoord4: return "MultiTexCoord4";
case EbvMultiTexCoord5: return "MultiTexCoord5";
case EbvMultiTexCoord6: return "MultiTexCoord6";
case EbvMultiTexCoord7: return "MultiTexCoord7";
case EbvFrontColor: return "FrontColor";
case EbvBackColor: return "BackColor";
case EbvFrontSecondaryColor: return "FrontSecondaryColor";
case EbvBackSecondaryColor: return "BackSecondaryColor";
case EbvTexCoord: return "TexCoord";
case EbvFogFragCoord: return "FogFragCoord";
case EbvInvocationId: return "InvocationID";
case EbvPrimitiveId: return "PrimitiveID";
case EbvLayer: return "Layer";
case EbvViewportIndex: return "ViewportIndex";
case EbvPatchVertices: return "PatchVertices";
case EbvTessLevelOuter: return "TessLevelOuter";
case EbvTessLevelInner: return "TessLevelInner";
case EbvBoundingBox: return "BoundingBox";
case EbvTessCoord: return "TessCoord";
case EbvColor: return "Color";
case EbvSecondaryColor: return "SecondaryColor";
case EbvFace: return "Face";
case EbvFragCoord: return "FragCoord";
case EbvPointCoord: return "PointCoord";
case EbvFragColor: return "FragColor";
case EbvFragData: return "FragData";
case EbvFragDepth: return "FragDepth";
case EbvSampleId: return "SampleId";
case EbvSamplePosition: return "SamplePosition";
case EbvSampleMask: return "SampleMaskIn";
case EbvHelperInvocation: return "HelperInvocation";
default: return "unknown built-in variable";
}
}
// In this enum, order matters; users can assume higher precision is a bigger value
// and EpqNone is 0.
enum TPrecisionQualifier {
EpqNone = 0,
EpqLow,
EpqMedium,
EpqHigh
};
__inline const char* GetPrecisionQualifierString(TPrecisionQualifier p)
{
switch(p) {
case EpqNone: return ""; break;
case EpqLow: return "lowp"; break;
case EpqMedium: return "mediump"; break;
case EpqHigh: return "highp"; break;
default: return "unknown precision qualifier";
}
}
} // end namespace glslang
#endif // _BASICTYPES_INCLUDED_
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