Small optimization to VertexDataManager.

src/libANGLE/Program.cpp

@@ -594,7 +594,7 @@ const int *Program::getSemanticIndexes() const
     return mProgram->getSemanticIndexes();
 }
 
-int Program::getSemanticIndex(int attributeIndex)
+int Program::getSemanticIndex(int attributeIndex) const
 {
     ASSERT(attributeIndex >= 0 && attributeIndex < MAX_VERTEX_ATTRIBS);
 

src/libANGLE/Program.h

@@ -189,7 +189,7 @@ class Program : angle::NonCopyable
     void getAttachedShaders(GLsizei maxCount, GLsizei *count, GLuint *shaders);
 
     GLuint getAttributeLocation(const std::string &name);
-    int getSemanticIndex(int attributeIndex);
+    int getSemanticIndex(int attributeIndex) const;
     const int *getSemanticIndexes() const;
 
     void getActiveAttribute(GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, GLchar *name);

src/libANGLE/renderer/d3d/VertexDataManager.cpp

@@ -130,6 +130,7 @@ gl::Error VertexDataManager::prepareVertexData(const gl::State &state, GLint sta
     // Compute active enabled and active disable attributes, for speed.
     // TODO(jmadill): don't recompute if there was no state change
     const gl::VertexArray *vertexArray = state.getVertexArray();
+    const int *semanticIndexes = state.getProgram()->getSemanticIndexes();
     const std::vector<gl::VertexAttribute> &vertexAttributes = vertexArray->getVertexAttributes();
 
     mActiveEnabledAttributes.clear();
@@ -137,7 +138,7 @@ gl::Error VertexDataManager::prepareVertexData(const gl::State &state, GLint sta
 
     for (size_t attribIndex = 0; attribIndex < vertexAttributes.size(); ++attribIndex)
     {
-        translated[attribIndex].active = (state.getProgram()->getSemanticIndex(attribIndex) != -1);
+        translated[attribIndex].active = (semanticIndexes[attribIndex] != -1);
         if (translated[attribIndex].active)
         {
             // Record the attribute now