Adding 3D lut color filter

src/gpu/gl/GrGLCaps.cpp

Index: src/gpu/gl/GrGLCaps.cpp
diff --git a/src/gpu/gl/GrGLCaps.cpp b/src/gpu/gl/GrGLCaps.cpp
index dc4ef4c160459fbc655287446d50322bfd0c4e5a..ac40060cdc473b150ea761e82b112c94790b668c 100644
--- a/src/gpu/gl/GrGLCaps.cpp
+++ b/src/gpu/gl/GrGLCaps.cpp
@@ -599,6 +599,14 @@ void GrGLCaps::initConfigTexturableTable(const GrGLContextInfo& ctxInfo, const G
                          ctxInfo.hasExtension("GL_OES_texture_float"));
     }
     fConfigTextureSupport[kRGBA_float_GrPixelConfig] = hasFPTextures;
+    

[bsalomon, 2014/09/19 13:47:04]

Need tests for support on OpenGL, not just GLES.

[sugoi1, 2014/09/24 19:12:48]

Done.

+    // 3D textures. Texture wrap modes and mip-mapping is supported for power
+    // of two 3D textures. Mip-mapping and texture wrap modes other than
+    // CLAMP_TO_EDGE are not supported for non-power of two 3D textures.
+    // The OES_texture_npot extension, if supported, will enable mip-mapping
+    // and other wrap modes for non-power of two 3D textures.
+    f3DTexImageSupport =
+        ctxInfo.hasExtension("GL_OES_texture_3D"); // No need for npot for now
 }
 
 bool GrGLCaps::readPixelsSupported(const GrGLInterface* intf,