commit 802abe0150b38df3c65205af60180acd63a66e51
author Martin Radev <mradev@nvidia.com> Thu Aug 04 17:48:32 2016 +0300
committer Commit Bot <commit-bot@chromium.org> Tue Aug 09 16:04:13 2016 +0000
tree 11c4332ba27c3bbba11218b54e850815425fa00e
parent 17b10a9aaf277c3121d36372d58adf314ab7e521

Add compute shader compilation support in the glsl compiler

Support is added for compute shader compilation. There is a small
extension to the parser so that 'local_size_x = ', 'local_size_y = '
and 'local_size_z = ' are supported as layout qualifiers.

A few shader compilation tests are added and one which checks the AST
whether the layout qualifiers are properly parsed.

BUG=angleproject:1442

TEST=angle_unittests
TEST=angle_end2end_tests

Change-Id: I67283797d1cf13fa4ac47faa2a6e66d93a2db867
Reviewed-on: https://chromium-review.googlesource.com/362300
Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

src/compiler/translator/Compiler.cpp

diff --git a/src/compiler/translator/Compiler.cpp b/src/compiler/translator/Compiler.cpp
index f586c7f..1469a33 100644
--- a/src/compiler/translator/Compiler.cpp
+++ b/src/compiler/translator/Compiler.cpp
@@ -150,8 +150,10 @@
       clampingStrategy(SH_CLAMP_WITH_CLAMP_INTRINSIC),
       builtInFunctionEmulator(),
       mSourcePath(NULL),
+      mComputeShaderLocalSizeDeclared(false),
       mTemporaryIndex(0)
 {
+    mComputeShaderLocalSize.fill(1);
 }
 
 TCompiler::~TCompiler()
@@ -250,6 +252,9 @@
         mPragma = parseContext.pragma();
         symbolTable.setGlobalInvariant(mPragma.stdgl.invariantAll);
 
+        mComputeShaderLocalSizeDeclared = parseContext.isComputeShaderLocalSizeDeclared();
+        mComputeShaderLocalSize         = parseContext.getComputeShaderLocalSize();
+
         root = parseContext.getTreeRoot();
         root = intermediate.postProcess(root);
 
@@ -450,6 +455,10 @@
         symbolTable.setDefaultPrecision(integer, EbpHigh);
         symbolTable.setDefaultPrecision(floatingPoint, EbpHigh);
         break;
+      case GL_COMPUTE_SHADER:
+          symbolTable.setDefaultPrecision(integer, EbpHigh);
+          symbolTable.setDefaultPrecision(floatingPoint, EbpHigh);
+          break;
       default:
         assert(false && "Language not supported");
     }