commit 687152872868ca57915af8859d77b6b13fe229c0
author jbauman@chromium.org <jbauman@chromium.org@736b8ea6-26fd-11df-bfd4-992fa37f6226> Thu Jul 12 23:28:41 2012 +0000
committer jbauman@chromium.org <jbauman@chromium.org@736b8ea6-26fd-11df-bfd4-992fa37f6226> Thu Jul 12 23:28:41 2012 +0000
tree ef94a1ae4e4691c911d4e4f2fd6bed2dafb2ae28
parent 07ab841a88e2779dec5d5a347a8403c7d84f28e8

Scale up non-multiple-of-4 dxt textures

D3D doesn't support DXT textures that aren't a multiple of 4 in size, so multiply the sizes by 2 or 4 so they work. Then ensure sampler parameters are set up correctly so they don't sample the unuploaded miplevels.

BUG=https://code.google.com/p/angleproject/issues/detail?id=237
TEST=

Review URL: https://codereview.appspot.com/6287045

git-svn-id: https://angleproject.googlecode.com/svn/trunk@1222 736b8ea6-26fd-11df-bfd4-992fa37f6226

src/libGLESv2/utilities.cpp

diff --git a/src/libGLESv2/utilities.cpp b/src/libGLESv2/utilities.cpp
index 5cf005d..e6f8993 100644
--- a/src/libGLESv2/utilities.cpp
+++ b/src/libGLESv2/utilities.cpp
@@ -965,6 +965,21 @@
     return (surfaceFormat == D3DFMT_INTZ);
 }
 
+bool IsCompressedD3DFormat(D3DFORMAT surfaceFormat)
+{
+    switch(surfaceFormat)
+    {
+      case D3DFMT_DXT1:
+      case D3DFMT_DXT2:
+      case D3DFMT_DXT3:
+      case D3DFMT_DXT4:
+      case D3DFMT_DXT5:
+        return true;
+      default:
+        return false;
+    }
+}
+
 GLsizei GetSamplesFromMultisampleType(D3DMULTISAMPLE_TYPE type)
 {
     if (type == D3DMULTISAMPLE_NONMASKABLE)