Fix D3D9 varyings limits.

We were off by one varying, since D3D9 treats PSIZE specially. BUG=angle:769 Change-Id: Id5242d12c3ca42da3f3f528ff4a21445dba89701 Reviewed-on: https://chromium-review.googlesource.com/221062Reviewed-by: Brandon Jones <bajones@chromium.org> Tested-by: Jamie Madill <jmadill@chromium.org>

Fix D3D9 varyings limits.
aabecf8e · Jamie Madill · 5ac124b1 · aabecf8e
Commit aabecf8e authored Oct 02, 2014 by Jamie Madill
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renderer9_utils.cpp src/libGLESv2/renderer/d3d/d3d9/renderer9_utils.cpp +3 -2

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--- a/src/libGLESv2/renderer/d3d/d3d9/renderer9_utils.cpp
+++ b/src/libGLESv2/renderer/d3d/d3d9/renderer9_utils.cpp
@@ -391,8 +391,9 @@ void GenerateCaps(IDirect3D9 *d3d9, IDirect3DDevice9 *device, D3DDEVTYPE deviceT

    caps->maxVertexUniformBlocks = 0;

-    const size_t MAX_VERTEX_OUTPUT_VECTORS_SM3 = 10;
-    const size_t MAX_VERTEX_OUTPUT_VECTORS_SM2 = 8;
+    // SM3 only supports 11 output variables, with a special 12th register for PSIZE.
+    const size_t MAX_VERTEX_OUTPUT_VECTORS_SM3 = 9;
+    const size_t MAX_VERTEX_OUTPUT_VECTORS_SM2 = 7;
    caps->maxVertexOutputComponents = ((deviceCaps.VertexShaderVersion >= D3DVS_VERSION(3, 0)) ? MAX_VERTEX_OUTPUT_VECTORS_SM3
                                                                                               : MAX_VERTEX_OUTPUT_VECTORS_SM2) * 4;