commit 4fd18b1b815ae9ecb39684448a6c0cdb02f3fc65
author Austin Kinross <aukinros@microsoft.com> Mon Dec 22 12:32:05 2014 -0800
committer Geoff Lang <geofflang@chromium.org> Mon Jan 05 18:10:26 2015 +0000
tree 8db4e86b73f447dc62b01f875eb9e0628bcee37f
parent 324bcc460a3caf8f62ae7cbf3c7635e85061cfcb

Emulate large and negative viewports on D3D11 Feature Level 9_3

Like D3D9, D3D11 Feature Level 9_3 doesn't support large or negative
viewports. We have to emulate these in the vertex shader.

BUG=angle:858

Change-Id: I2bd53e3921dc3590cc7193164d73596deafca9ea
Reviewed-on: https://chromium-review.googlesource.com/236040
Tested-by: Austin Kinross <aukinros@microsoft.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>

src/libANGLE/renderer/d3d/DynamicHLSL.cpp

diff --git a/src/libANGLE/renderer/d3d/DynamicHLSL.cpp b/src/libANGLE/renderer/d3d/DynamicHLSL.cpp
index 1225f58..215c71f 100644
--- a/src/libANGLE/renderer/d3d/DynamicHLSL.cpp
+++ b/src/libANGLE/renderer/d3d/DynamicHLSL.cpp
@@ -728,7 +728,8 @@
                   "{\n"
                   "    initAttributes(input);\n";
 
-    if (shaderModel >= 4)
+    // On D3D9 or D3D11 Feature Level 9, we need to emulate large viewports using dx_ViewAdjust.
+    if (shaderModel >= 4  && mRenderer->getShaderModelSuffix() == "")
     {
         vertexHLSL += "\n"
                       "    gl_main();\n"