commit 1a6834602b776b9bb6f4eaf1857822d8f7cc3eab
author Geoff Lang <geofflang@chromium.org> Tue Sep 29 15:09:59 2015 -0400
committer Geoff Lang <geofflang@chromium.org> Thu Oct 22 14:50:02 2015 +0000
tree b3b4f9509c8573e538003143738bbc6fd8147649
parent a9ca8e2025368aaf613915cc12e7e1bd1aa4befe

Implement TransformFeedbackGL.

Reland with supression for TransformFeedbackTest.MultiContext on Linux
AMD.

BUG=angleproject:889

Change-Id: I6f2a2e856dacf16308de222dd0936bedbb3b175c
Reviewed-on: https://chromium-review.googlesource.com/307871
Tryjob-Request: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>

src/libANGLE/renderer/gl/ProgramGL.cpp

diff --git a/src/libANGLE/renderer/gl/ProgramGL.cpp b/src/libANGLE/renderer/gl/ProgramGL.cpp
index b3e36b0..80d8c92 100644
--- a/src/libANGLE/renderer/gl/ProgramGL.cpp
+++ b/src/libANGLE/renderer/gl/ProgramGL.cpp
@@ -51,6 +51,29 @@
     // Reset the program state, delete the current program if one exists
     reset();
 
+    // Set the transform feedback state
+    std::vector<const GLchar *> transformFeedbackVaryings;
+    for (const auto &tfVarying : mData.getTransformFeedbackVaryingNames())
+    {
+        transformFeedbackVaryings.push_back(tfVarying.c_str());
+    }
+
+    if (transformFeedbackVaryings.empty())
+    {
+        if (mFunctions->transformFeedbackVaryings)
+        {
+            mFunctions->transformFeedbackVaryings(mProgramID, 0, nullptr,
+                                                  mData.getTransformFeedbackBufferMode());
+        }
+    }
+    else
+    {
+        ASSERT(mFunctions->transformFeedbackVaryings);
+        mFunctions->transformFeedbackVaryings(
+            mProgramID, static_cast<GLsizei>(transformFeedbackVaryings.size()),
+            &transformFeedbackVaryings[0], mData.getTransformFeedbackBufferMode());
+    }
+
     const gl::Shader *vertexShader   = mData.getAttachedVertexShader();
     const gl::Shader *fragmentShader = mData.getAttachedFragmentShader();