commit 3b1703f42cc94a1b28a5a6b5f9653084c0bc455b
author daniel@transgaming.com <daniel@transgaming.com@736b8ea6-26fd-11df-bfd4-992fa37f6226> Wed May 11 15:36:26 2011 +0000
committer daniel@transgaming.com <daniel@transgaming.com@736b8ea6-26fd-11df-bfd4-992fa37f6226> Wed May 11 15:36:26 2011 +0000
tree 7d315fdf3a2a55e836753df46901198fec72e9e0
parent 15795192be7ea5c234b49ba0d730bc36dcd812a2

Detect support for vertex shader texture lookups.

Issue=95
TRAC #16568
Signed-off-by: Daniel Koch
Author: Nicolas Capens

git-svn-id: https://angleproject.googlecode.com/svn/trunk@636 736b8ea6-26fd-11df-bfd4-992fa37f6226

src/libEGL/Display.cpp

diff --git a/src/libEGL/Display.cpp b/src/libEGL/Display.cpp
index 37761f1..570d3cf 100644
--- a/src/libEGL/Display.cpp
+++ b/src/libEGL/Display.cpp
@@ -1,5 +1,5 @@
 //
-// Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
+// Copyright (c) 2002-2011 The ANGLE Project Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
@@ -614,7 +614,7 @@
     }
 }
 
-bool Display::isInitialized()
+bool Display::isInitialized() const
 {
     return mD3d9 != NULL && mConfigSet.size() > 0;
 }
@@ -854,4 +854,23 @@
     return mExtensionString.c_str();
 }
 
+// Only Direct3D 10 ready devices support all the necessary vertex texture formats.
+// We test this using D3D9 by checking support for the R16F format.
+bool Display::getVertexTextureSupport() const
+{
+    return false;   // Disabled until full VTF support is implemented
+
+    if (!isInitialized() || mDeviceCaps.PixelShaderVersion < D3DPS_VERSION(3, 0))
+    {
+        return false;
+    }
+
+    D3DDISPLAYMODE currentDisplayMode;
+    mD3d9->GetAdapterDisplayMode(mAdapter, &currentDisplayMode);
+
+    HRESULT result = mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, D3DUSAGE_QUERY_VERTEXTEXTURE, D3DRTYPE_TEXTURE, D3DFMT_R16F);
+
+    return SUCCEEDED(result);
+}
+
 }