Vulkan: support GL_FIXED vertex data.

Override fixed to float, generate code, enable tests.

BUG=angleproject:2405

Change-Id: Ic3e9a31eaf22372023b94081b0f4a83770dcabbe
Reviewed-on: https://chromium-review.googlesource.com/1144455
Commit-Queue: Frank Henigman <fjhenigman@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
diff --git a/src/libANGLE/renderer/vulkan/VertexArrayVk.cpp b/src/libANGLE/renderer/vulkan/VertexArrayVk.cpp
index 4b18414..0c4eda2 100644
--- a/src/libANGLE/renderer/vulkan/VertexArrayVk.cpp
+++ b/src/libANGLE/renderer/vulkan/VertexArrayVk.cpp
@@ -325,12 +325,12 @@
     // Invalidate the input description for pipelines.
     mDirtyPackedInputs.set(attribIndex);
 
-    RendererVk *renderer = contextVk->getRenderer();
+    RendererVk *renderer   = contextVk->getRenderer();
     bool releaseConversion = true;
 
     if (attrib.enabled)
     {
-        gl::Buffer *bufferGL = binding.getBuffer().get();
+        gl::Buffer *bufferGL                    = binding.getBuffer().get();
         mCurrentArrayBufferFormats[attribIndex] = &renderer->getFormat(GetVertexFormatID(attrib));
 
         if (bufferGL)