Add link validation infrastructure for multiple compilation units per stage. Includes a new, straightforward, C++ interface to the front end.

git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@22927 e7fa87d3-cd2b-0410-9028-fcbf551c1848

Test/baseResults/cppComplexExpr.vert.out

@@ -1,4 +1,4 @@
-WARNING: 0:1: '#version' : statement missing: use #version on first line of shader 
+WARNING: #version: statement missing; use #version on first line of shader
 0:? Sequence
 0:4  Sequence
 0:4    move second child to first child (highp float)

Test/baseResults/errors.frag.out

@@ -1,4 +1,4 @@
-WARNING: 0:1: '#version' : statement missing: use #version on first line of shader 
+WARNING: #version: statement missing; use #version on first line of shader
 ERROR: 0:1: 'main' : function cannot take any parameter(s) 
 ERROR: 0:1: 'int' :  main function cannot return a value
 ERROR: 2 compilation errors.  No code generated.

Test/baseResults/mains1.frag.out

@@ -0,0 +1,33 @@
+mains1.frag
+
+0:3Function Definition: main( (void)
+0:3  Function Parameters: 
+
+mains2.frag
+
+0:3Function Definition: main( (void)
+0:3  Function Parameters: 
+
+noMain1.geom
+ERROR: #version: geometry shaders require non-es profile and version 150 or above
+ERROR: 1 compilation errors.  No code generated.
+
+
+0:3Function Definition: foo( (void)
+0:3  Function Parameters: 
+
+noMain2.geom
+
+0:3Function Definition: bar( (void)
+0:3  Function Parameters: 
+
+
+Linked geometry stage:
+
+ERROR: Missing entry point: Each stage requires one "void main()" entry point
+
+Linked fragment stage:
+
+ERROR: Too many entry points: Each stage can have at most one "void main()" entry point.
+
+

Test/baseResults/noMain.vert.out

@@ -0,0 +1,26 @@
+noMain.vert
+
+0:3Function Definition: foo( (void)
+0:3  Function Parameters: 
+
+mains.frag
+ERROR: 0:7: 'main' : function already has a body 
+ERROR: 1 compilation errors.  No code generated.
+
+
+ERROR: node is still EOpNull!
+0:3  Function Definition: main( (void)
+0:3    Function Parameters: 
+0:7  Function Definition: main( (void)
+0:7    Function Parameters: 
+
+
+Linked vertex stage:
+
+ERROR: Missing entry point: Each stage requires one "void main()" entry point
+
+Linked fragment stage:
+
+ERROR: Too many entry points: Each stage can have at most one "void main()" entry point.
+
+

Test/baseResults/pointCoord.frag.out

@@ -1,4 +1,4 @@
-WARNING: 0:1: '#version' : statement missing: use #version on first line of shader 
+WARNING: #version: statement missing; use #version on first line of shader
 0:? Sequence
 0:5  Function Definition: main( (void)
 0:5    Function Parameters: 

Test/baseResults/versionsClean.frag.out

@@ -1,4 +1,4 @@
-ERROR: 0:1: '#version' : statement must appear first in ESSL shader; before comments or newlines 
+ERROR: #version: statement must appear first in es-profile shader; before comments or newlines
 ERROR: 1 compilation errors.  No code generated.
 
 ERROR: node is still EOpNull!

Test/baseResults/versionsErrors.frag.out

@@ -1,5 +1,4 @@
 ERROR: #version: versions before 150 do not allow a profile token
-ERROR: 0:1: '#version' : incorrect 
 ERROR: 0:38: 'attribute' : not supported in this stage: fragment
 ERROR: 0:40: 'sampler2DRect' : Reserved word. 
 ERROR: 0:40: 'rectangle texture' : not supported for this version or the enabled extensions