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Tessellation partial implementation (not ready for use yet), including:

Browse source 
- the built-in constants
 - built-in variable declarations, some dependent on gl_MaxPatchVertices
 - layout qualifier for vertices (shared with geometry shader max_vertices)
 - layout qualifiers for vertex spacing, vertex order, point mode, and primitive type
 - link semantics for layout qualifiers

Still TBD:
 - patch qualifier and arrayed input handling
 - sizing of gl_out[]
 - additional semantic checking
 - supporting the extension on version 150

git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@24468 e7fa87d3-cd2b-0410-9028-fcbf551c1848
This commit is contained in:
John Kessenich 2013-12-11 18:57:40 +00:00
parent 2fcc9ff1d2
commit 623833fabc
28 changed files with 831 additions and 342 deletions
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34
glslang/MachineIndependent/linkValidate.cpp
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@ -80,15 +80,30 @@ void TIntermediate::merge(TInfoSink& infoSink, TIntermediate& unit)
inputPrimitive = unit.inputPrimitive;
else if (inputPrimitive != unit.inputPrimitive)
error(infoSink, "Contradictory input layout primitives");
if (outputPrimitive == ElgNone)
outputPrimitive = unit.outputPrimitive;
else if (outputPrimitive != unit.outputPrimitive)
error(infoSink, "Contradictory output layout primitives");
if (maxVertices == 0)
maxVertices = unit.maxVertices;
else if (maxVertices != unit.maxVertices)
if (vertices == 0)
vertices = unit.vertices;
else if (vertices != unit.vertices)
error(infoSink, "Contradictory layout max_vertices values");
if (vertexSpacing == ElgNone)
vertexSpacing = unit.vertexSpacing;
else if (vertexSpacing != unit.vertexSpacing)
error(infoSink, "Contradictory input vertex spacing");
if (vertexOrder == EvoNone)
vertexOrder = unit.vertexOrder;
else if (vertexOrder != unit.vertexOrder)
error(infoSink, "Contradictory triangle ordering");
if (unit.pointMode)
pointMode = true;
if (unit.treeRoot == 0)
return;
@ -259,7 +274,9 @@ void TIntermediate::mergeErrorCheck(TInfoSink& infoSink, const TIntermSymbol& sy
// Do final link-time error checking of a complete (merged) intermediate representation.
// (Much error checking was done during merging).
//
void TIntermediate::errorCheck(TInfoSink& infoSink)
// Also, lock in defaults of things not set.
//
void TIntermediate::finalCheck(TInfoSink& infoSink)
{
if (numMains < 1)
error(infoSink, "Missing entry point: Each stage requires one \"void main()\" entry point");
@ -281,14 +298,21 @@ void TIntermediate::errorCheck(TInfoSink& infoSink)
switch (language) {
case EShLangVertex:
case EShLangTessControl:
break;
case EShLangTessEvaluation:
if (inputPrimitive == ElgNone)
error(infoSink, "At least one tessellation shader must specify an input layout primitive");
if (vertexSpacing == EvsNone)
vertexSpacing = EvsEqual;
if (vertexOrder == EvoNone)
vertexOrder = EvoCcw;
break;
case EShLangGeometry:
if (inputPrimitive == ElgNone)
error(infoSink, "At least one geometry shader must specify an input layout primitive");
if (outputPrimitive == ElgNone)
error(infoSink, "At least one geometry shader must specify an output layout primitive");
if (maxVertices == 0)
if (vertices == 0)
error(infoSink, "At least one geometry shader must specify a layout(max_vertices = value)");
break;
case EShLangFragment: