commit 7700ff65c9e31a78b9256e4e201c7c0ba311a3c5
author Olli Etuaho <oetuaho@nvidia.com> Thu Jan 15 12:16:29 2015 +0200
committer Olli Etuaho <oetuaho@nvidia.com> Tue Jan 20 09:01:39 2015 +0000
tree 80ac1af399122c3c4d9b6dfc5fa0f5efc7b81acf
parent 958db2b6c5c0b583a8b6408d8450f15259a55b73

Add basic support for ESSL3 vec2 (un)pack functions

The functions are emulated on HLSL, and use the native functions on
OpenGL 4.2+ and GLES3.0. Emulation for OpenGL versions <= 4.1 is not yet
implemented.

BUG=angle:865

Change-Id: I6803a1767dacdb3dca12f13924651fd38fcacb75
Reviewed-on: https://chromium-review.googlesource.com/240961
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Olli Etuaho <oetuaho@nvidia.com>

src/compiler/translator/OutputHLSL.cpp

diff --git a/src/compiler/translator/OutputHLSL.cpp b/src/compiler/translator/OutputHLSL.cpp
index 40f8bd2..8ff8907 100644
--- a/src/compiler/translator/OutputHLSL.cpp
+++ b/src/compiler/translator/OutputHLSL.cpp
@@ -1635,6 +1635,30 @@
       case EOpFloatBitsToUint:  outputTriplet(visit, "asuint(", "", ")");    break;
       case EOpIntBitsToFloat:   outputTriplet(visit, "asfloat(", "", ")");   break;
       case EOpUintBitsToFloat:  outputTriplet(visit, "asfloat(", "", ")");   break;
+      case EOpPackSnorm2x16:
+        ASSERT(node->getUseEmulatedFunction());
+        writeEmulatedFunctionTriplet(visit, "packSnorm2x16(");
+        break;
+      case EOpPackUnorm2x16:
+        ASSERT(node->getUseEmulatedFunction());
+        writeEmulatedFunctionTriplet(visit, "packUnorm2x16(");
+        break;
+      case EOpPackHalf2x16:
+        ASSERT(node->getUseEmulatedFunction());
+        writeEmulatedFunctionTriplet(visit, "packHalf2x16(");
+        break;
+      case EOpUnpackSnorm2x16:
+        ASSERT(node->getUseEmulatedFunction());
+        writeEmulatedFunctionTriplet(visit, "unpackSnorm2x16(");
+        break;
+      case EOpUnpackUnorm2x16:
+        ASSERT(node->getUseEmulatedFunction());
+        writeEmulatedFunctionTriplet(visit, "unpackUnorm2x16(");
+        break;
+      case EOpUnpackHalf2x16:
+        ASSERT(node->getUseEmulatedFunction());
+        writeEmulatedFunctionTriplet(visit, "unpackHalf2x16(");
+        break;
       case EOpLength:           outputTriplet(visit, "length(", "", ")");    break;
       case EOpNormalize:        outputTriplet(visit, "normalize(", "", ")"); break;
       case EOpDFdx: