commit 07ab841a88e2779dec5d5a347a8403c7d84f28e8
author daniel@transgaming.com <daniel@transgaming.com@736b8ea6-26fd-11df-bfd4-992fa37f6226> Thu Jul 12 15:17:09 2012 +0000
committer daniel@transgaming.com <daniel@transgaming.com@736b8ea6-26fd-11df-bfd4-992fa37f6226> Thu Jul 12 15:17:09 2012 +0000
tree f4122deee49d449e4f4afb6d7144f841cd0d0789
parent 95a758f3aaecea686132ea2a602e1612057c32ab

Implement Anisotropic Texture filtering support

Bug=297
Authored-by: Conor Dickinson, Cloud Party, Inc.
Signed-off-by: Daniel Koch

git-svn-id: https://angleproject.googlecode.com/svn/trunk@1219 736b8ea6-26fd-11df-bfd4-992fa37f6226

src/libEGL/Display.cpp

diff --git a/src/libEGL/Display.cpp b/src/libEGL/Display.cpp
index e1e4e16..3ef90a2 100644
--- a/src/libEGL/Display.cpp
+++ b/src/libEGL/Display.cpp
@@ -1089,6 +1089,16 @@
     return SUCCEEDED(mD3d9->CheckDeviceFormat(mAdapter, mDeviceType, currentDisplayMode.Format, 0, D3DRTYPE_TEXTURE, D3DFMT_A8L8));
 }
 
+float Display::getTextureFilterAnisotropySupport() const
+{
+    // Must support a minimum of 2:1 anisotropy for max anisotropy to be considered supported, per the spec
+    if ((mDeviceCaps.RasterCaps & D3DPRASTERCAPS_ANISOTROPY) && (mDeviceCaps.MaxAnisotropy >= 2))
+    {
+        return mDeviceCaps.MaxAnisotropy;
+    }
+    return 1.0f;
+}
+
 D3DPOOL Display::getBufferPool(DWORD usage) const
 {
     if (mD3d9Ex != NULL)