commit 84aa2dcf8a2de29f374177120f3b61bd6223c828
author Martin Radev <mradev@nvidia.com> Mon Sep 11 15:51:02 2017 +0300
committer Commit Bot <commit-bot@chromium.org> Tue Sep 19 23:18:38 2017 +0000
tree 58dbcffb26fd100dd99f292444359775a193636b
parent 72f58fa30559ff9f8444e1d6c3fd32e1112c6648

Add textureGather and textureGatherOffset

The patch adds new built-ins and extends the semantic parser to add
support for textureGather and textureGatherOffset.

BUG=angleproject:1442
TEST=angle_unittests
TEST=angle_deqp_gles31_tests.exe
     --deqp-case=dEQP-GLES31.functional.texture.gather*
     --deqp-egl-display-type=angle-gl

Change-Id: Iaf98c3420fbd61193072fdec8f5a61ac4c574101
Reviewed-on: https://chromium-review.googlesource.com/660124
Commit-Queue: Martin Radev <mradev@nvidia.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>

src/compiler/translator/Initialize.cpp

diff --git a/src/compiler/translator/Initialize.cpp b/src/compiler/translator/Initialize.cpp
index bf026be..769c93a 100644
--- a/src/compiler/translator/Initialize.cpp
+++ b/src/compiler/translator/Initialize.cpp
@@ -666,6 +666,39 @@
 
     symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, gvec4, "texelFetch", gsampler2DMS, int2, int1);
 
+    // Insert all variations of textureGather.
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, gvec4, "textureGather", gsampler2D, float2);
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, gvec4, "textureGather", gsampler2D, float2, int1);
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, gvec4, "textureGather", gsampler2DArray, float3);
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, gvec4, "textureGather", gsampler2DArray, float3,
+                              int1);
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, gvec4, "textureGather", gsamplerCube, float3);
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, gvec4, "textureGather", gsamplerCube, float3, int1);
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, float4, "textureGather", sampler2DShadow, float2);
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, float4, "textureGather", sampler2DShadow, float2,
+                              float1);
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, float4, "textureGather", sampler2DArrayShadow,
+                              float3);
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, float4, "textureGather", sampler2DArrayShadow,
+                              float3, float1);
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, float4, "textureGather", samplerCubeShadow, float3);
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, float4, "textureGather", samplerCubeShadow, float3,
+                              float1);
+
+    // Insert all variations of textureGatherOffset.
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, gvec4, "textureGatherOffset", gsampler2D, float2,
+                              int2);
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, gvec4, "textureGatherOffset", gsampler2D, float2,
+                              int2, int1);
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, gvec4, "textureGatherOffset", gsampler2DArray,
+                              float3, int2);
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, gvec4, "textureGatherOffset", gsampler2DArray,
+                              float3, int2, int1);
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, float4, "textureGatherOffset", sampler2DShadow,
+                              float2, float1, int2);
+    symbolTable.insertBuiltIn(ESSL3_1_BUILTINS, float4, "textureGatherOffset", sampler2DArrayShadow,
+                              float3, float1, int2);
+
     if (type == GL_COMPUTE_SHADER)
     {
         symbolTable.insertBuiltInFunctionNoParameters(ESSL3_1_BUILTINS, EOpBarrier, voidType,