X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fbackends%2Fopengl%2Ftexture2darray_backend.cpp;h=edca615d91a8440ca7cabfa3fca8b7db235a9a0e;hb=8a8cce8ef4ee28b3572a72958b8b407759f9f826;hp=610229ba4acf96f16cb7d4cf92761ab21c5c128f;hpb=160e9eea29bd10034733d59507fa1bcca36be401;p=libs%2Fgl.git

diff --git a/source/backends/opengl/texture2darray_backend.cpp b/source/backends/opengl/texture2darray_backend.cpp
index 610229ba..edca615d 100644
--- a/source/backends/opengl/texture2darray_backend.cpp
+++ b/source/backends/opengl/texture2darray_backend.cpp
@@ -10,5 +10,17 @@ OpenGLTexture2DArray::OpenGLTexture2DArray():
 	static Require _req(EXT_texture_array);
 }
 
+size_t OpenGLTexture2DArray::get_data_size() const
+{
+	if(!id)
+		return 0;
+
+	size_t level_size = width*height*get_pixel_size(format);
+	size_t total_size = level_size;
+	for(unsigned i=0; i<levels; ++i, level_size>>=2)
+		total_size += level_size*depth;
+	return total_size;
+}
+
 } // namespace GL
 } // namespace Msp