Mostly eliminates usage of getD3DFormat in Texture.

TRAC #21906

Signed-off-by: Daniel Koch

Author:    Shannon Woods

git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1367 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/renderer/Image.cpp b/src/libGLESv2/renderer/Image.cpp
index a0ebd32..0e78248 100644
--- a/src/libGLESv2/renderer/Image.cpp
+++ b/src/libGLESv2/renderer/Image.cpp
@@ -30,6 +30,7 @@
 
     mD3DPool = D3DPOOL_SYSTEMMEM;
     mD3DFormat = D3DFMT_UNKNOWN;
+    mActualFormat = GL_NONE;
 }
 
 Image::~Image()
@@ -80,6 +81,7 @@
         mInternalFormat = internalformat;
         // compute the d3d format that will be used
         mD3DFormat = Texture::ConvertTextureInternalFormat(internalformat);
+        mActualFormat = dx2es::GetEquivalentFormat(mD3DFormat);
 
         if (mSurface)
         {
@@ -165,6 +167,11 @@
     return Texture::IsTextureFormatRenderable(getD3DFormat());
 }
 
+GLenum Image::getActualFormat() const
+{
+    return mActualFormat;
+}
+
 D3DFORMAT Image::getD3DFormat() const
 {
     // this should only happen if the image hasn't been redefined first