commit 0d218da495198e61334391c4a257fed54405386c
author Xinghua Cao <xinghua.cao@intel.com> Mon Dec 17 11:53:52 2018 +0800
committer Commit Bot <commit-bot@chromium.org> Tue Dec 18 04:00:12 2018 +0000
tree 17f7ce4eee607421fc2be68d46f86a0bb9864e2f
parent 2db5082b21df2906a9ac016d805a38d093539eda

Specify texture LOD in compute shader on D3D backend

D3D does not define LOD in compute shader, so Sample()
is not supported, try to use SampleLevel().

Bug: angleproject:2756
TEST=angle_end2end_tests.ComputeShaderTest
     .TextureFunction/ES3_1_D3D11
     dEQP.GLES31/functional_image_load_store_2d_store*

Change-Id: I63e707d2b56e807cfe766cc21bc6b0819982ce80
Reviewed-on: https://chromium-review.googlesource.com/c/1379672
Commit-Queue: Xinghua Cao <xinghua.cao@intel.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

src/compiler/translator/TextureFunctionHLSL.cpp

diff --git a/src/compiler/translator/TextureFunctionHLSL.cpp b/src/compiler/translator/TextureFunctionHLSL.cpp
index e3bd122..28208bc 100644
--- a/src/compiler/translator/TextureFunctionHLSL.cpp
+++ b/src/compiler/translator/TextureFunctionHLSL.cpp
@@ -1396,7 +1396,7 @@
 
         bool bias = (argumentCount > mandatoryArgumentCount);  // Bias argument is optional
 
-        if (lod0 || shaderType == GL_VERTEX_SHADER)
+        if (lod0 || shaderType == GL_VERTEX_SHADER || shaderType == GL_COMPUTE_SHADER)
         {
             if (bias)
             {