X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fbackends%2Fopengl%2Ftexture2dmultisample_backend.cpp;h=e6ee7614b028b88c1c56ea1e11a78e3ead733598;hb=f73e671dcb36c097647cddbf5b1eaaad2ffc9299;hp=c4a4e42380d227666790386c6b9e1697617a80f2;hpb=160e9eea29bd10034733d59507fa1bcca36be401;p=libs%2Fgl.git

diff --git a/source/backends/opengl/texture2dmultisample_backend.cpp b/source/backends/opengl/texture2dmultisample_backend.cpp
index c4a4e423..e6ee7614 100644
--- a/source/backends/opengl/texture2dmultisample_backend.cpp
+++ b/source/backends/opengl/texture2dmultisample_backend.cpp
@@ -19,6 +19,9 @@ void OpenGLTexture2DMultisample::allocate()
 	unsigned height = static_cast<const Texture2DMultisample *>(this)->height;
 	unsigned samples = static_cast<const Texture2DMultisample *>(this)->samples;
 
+	if(!id)
+		create();
+
 	GLenum gl_fmt = get_gl_pixelformat(storage_fmt);
 	if(ARB_texture_storage_multisample)
 	{
@@ -38,5 +41,13 @@ void OpenGLTexture2DMultisample::allocate()
 	apply_swizzle();
 }
 
+size_t OpenGLTexture2DMultisample::get_data_size() const
+{
+	unsigned width = static_cast<const Texture2DMultisample *>(this)->width;
+	unsigned height = static_cast<const Texture2DMultisample *>(this)->height;
+	unsigned samples = static_cast<const Texture2DMultisample *>(this)->samples;
+	return width*height*get_pixel_size(format)*samples;
+}
+
 } // namespace GL
 } // namespace Msp