commit 877ddfc51400030afd2804a23b132ed87a2f8d2f
author Alexis Hetu <sugoi@google.com> Tue Jul 25 17:48:00 2017 -0400
committer Alexis Hétu <sugoi@google.com> Thu Jul 27 12:03:16 2017 +0000
tree cf3e4988b27f89e895788dd07b2bdc9e4c1e0683
parent 0f70a7fa78b484008ac440352979e8bd62e4f0cd

gl_VertexID implementation

This cl implements support for gl_VertexID.

Passes the functional.shaders.builtin_variable.vertex_id test.

Change-Id: I5550e3ecba30e29f1e38ace608d730833a1e9598
Reviewed-on: https://swiftshader-review.googlesource.com/10958
Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

src/Shader/Shader.cpp

diff --git a/src/Shader/Shader.cpp b/src/Shader/Shader.cpp
index c861069..ff1482e 100644
--- a/src/Shader/Shader.cpp
+++ b/src/Shader/Shader.cpp
@@ -1059,9 +1059,14 @@
 		case PARAMETER_LOOP:			return "aL";
 	//	case PARAMETER_TEMPFLOAT16:		return "";
 		case PARAMETER_MISCTYPE:
-			if(index == 0)				return "vPos";
-			else if(index == 1)			return "vFace";
-			else						ASSERT(false);
+			switch(index)
+			{
+			case VPosIndex:				return "vPos";
+			case VFaceIndex:			return "vFace";
+			case InstanceIDIndex:		return "iID";
+			case VertexIDIndex:			return "vID";
+			default: ASSERT(false);
+			}
 		case PARAMETER_LABEL:			return "l";
 		case PARAMETER_PREDICATE:		return "p0";
 		case PARAMETER_FLOAT4LITERAL:	return "";