commit abf6dadd4983531c5cb8e28c0e3efbda3d283f0e
author Olli Etuaho <oetuaho@nvidia.com> Wed Jan 14 14:45:16 2015 +0200
committer Jamie Madill <jmadill@chromium.org> Fri Jan 16 15:41:40 2015 +0000
tree f8480a870e424fcca72c30eb33d6f7475065d011
parent d68157fc4b0dddf56f7d11a230a96e898cdb4750

Implement matrix inverse built-in

Inverse is emulated in HLSL by calculating the cofactor matrix and
dividing that with the determinant. This results in the transpose of the
inverse as is required. Better performing options might exist especially
for 4x4 matrices, but this is enough for a working implementation.

BUG=angle:859

Change-Id: I5185797cc1ed86865f5f4342707abdc2977a186b
Reviewed-on: https://chromium-review.googlesource.com/240331
Tested-by: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

src/compiler/translator/OutputGLSLBase.cpp

diff --git a/src/compiler/translator/OutputGLSLBase.cpp b/src/compiler/translator/OutputGLSLBase.cpp
index 5553960..23dcef3 100644
--- a/src/compiler/translator/OutputGLSLBase.cpp
+++ b/src/compiler/translator/OutputGLSLBase.cpp
@@ -522,6 +522,9 @@
       case EOpDeterminant:
         preString = "determinant(";
         break;
+      case EOpInverse:
+        preString = "inverse(";
+        break;
 
       case EOpAny:
         preString = "any(";