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/Initialize.cpp

diff --git a/src/compiler/translator/Initialize.cpp b/src/compiler/translator/Initialize.cpp
index 36c2f4a..e4cced4 100644
--- a/src/compiler/translator/Initialize.cpp
+++ b/src/compiler/translator/Initialize.cpp
@@ -252,6 +252,13 @@
     symbolTable.insertBuiltIn(ESSL3_BUILTINS, float3, "uintBitsToFloat", uint3);
     symbolTable.insertBuiltIn(ESSL3_BUILTINS, float4, "uintBitsToFloat", uint4);
 
+    symbolTable.insertBuiltIn(ESSL3_BUILTINS, uint1, "packSnorm2x16", float2);
+    symbolTable.insertBuiltIn(ESSL3_BUILTINS, uint1, "packUnorm2x16", float2);
+    symbolTable.insertBuiltIn(ESSL3_BUILTINS, uint1, "packHalf2x16", float2);
+    symbolTable.insertBuiltIn(ESSL3_BUILTINS, float2, "unpackSnorm2x16", uint1);
+    symbolTable.insertBuiltIn(ESSL3_BUILTINS, float2, "unpackUnorm2x16", uint1);
+    symbolTable.insertBuiltIn(ESSL3_BUILTINS, float2, "unpackHalf2x16", uint1);
+
     //
     // Geometric Functions.
     //
@@ -801,6 +808,14 @@
     symbolTable.relateToOperator(ESSL3_BUILTINS, "intBitsToFloat",  EOpIntBitsToFloat);
     symbolTable.relateToOperator(ESSL3_BUILTINS, "uintBitsToFloat", EOpUintBitsToFloat);
 
+    symbolTable.relateToOperator(ESSL3_BUILTINS, "packSnorm2x16", EOpPackSnorm2x16);
+    symbolTable.relateToOperator(ESSL3_BUILTINS, "packUnorm2x16", EOpPackUnorm2x16);
+    symbolTable.relateToOperator(ESSL3_BUILTINS, "packHalf2x16",  EOpPackHalf2x16);
+
+    symbolTable.relateToOperator(ESSL3_BUILTINS, "unpackSnorm2x16", EOpUnpackSnorm2x16);
+    symbolTable.relateToOperator(ESSL3_BUILTINS, "unpackUnorm2x16", EOpUnpackUnorm2x16);
+    symbolTable.relateToOperator(ESSL3_BUILTINS, "unpackHalf2x16",  EOpUnpackHalf2x16);
+
     symbolTable.relateToOperator(COMMON_BUILTINS, "length",       EOpLength);
     symbolTable.relateToOperator(COMMON_BUILTINS, "distance",     EOpDistance);
     symbolTable.relateToOperator(COMMON_BUILTINS, "dot",          EOpDot);