X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fbackends%2Fopengl%2Ftexture1d_backend.cpp;h=b8424872b37c3ee960801bfda52eddd4f4185611;hb=e2a707feb62c5df69884cca34d099dd2f7b7e4e2;hp=a270468b141883437f46d51de02a54888f69ee6f;hpb=2b930a353df652ade5baacae21d5d8a01f37c09d;p=libs%2Fgl.git

diff --git a/source/backends/opengl/texture1d_backend.cpp b/source/backends/opengl/texture1d_backend.cpp
index a270468b..b8424872 100644
--- a/source/backends/opengl/texture1d_backend.cpp
+++ b/source/backends/opengl/texture1d_backend.cpp
@@ -64,8 +64,17 @@ void OpenGLTexture1D::sub_image(unsigned level, int x, unsigned wd, const void *
 
 size_t OpenGLTexture1D::get_data_size() const
 {
+	if(!id)
+		return 0;
+
 	unsigned width = static_cast<const Texture1D *>(this)->width;
-	return id ? width*get_pixel_size(storage_fmt) : 0;
+	unsigned levels = static_cast<const Texture1D *>(this)->levels;
+
+	size_t level_size = width*get_pixel_size(storage_fmt);
+	size_t total_size = level_size;
+	for(unsigned i=0; i<levels; ++i, level_size>>=2)
+		total_size += level_size;
+	return total_size;
 }
 
 } // namespace GL