X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Ftexture3d.cpp;h=ed5619cb4aed30f567cf7e3e063a7ad05f60fd27;hp=4cba3afccbfade39750ef6ec00cd890182142b58;hb=aa9873652630db493b5bd9faee4117e9c30ef226;hpb=3e17c84968553e58cb09d397cafaead82e51d478

diff --git a/source/texture3d.cpp b/source/texture3d.cpp
index 4cba3afc..ed5619cb 100644
--- a/source/texture3d.cpp
+++ b/source/texture3d.cpp
@@ -33,7 +33,7 @@ Texture3D::Texture3D():
 	static Require _req(EXT_texture3D);
 }
 
-void Texture3D::storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned dp)
+void Texture3D::storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned dp, unsigned lv)
 {
 	if(width>0)
 		throw invalid_operation("Texture3D::storage");
@@ -44,24 +44,30 @@ void Texture3D::storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned dp)
 	width = wd;
 	height = ht;
 	depth = dp;
+	levels = get_n_levels();
+	if(lv>0)
+		levels = min(levels, lv);
 }
 
 void Texture3D::allocate(unsigned level)
 {
+	if(width==0 || height==0 || depth==0)
+		throw invalid_operation("Texture3D::allocate");
+	if(level>=levels)
+		throw invalid_argument("Texture3D::allocate");
 	if(allocated&(1<<level))
 		return;
 
 	if(ARB_texture_storage)
 	{
-		unsigned n_levels = (is_mipmapped(min_filter) ? get_n_levels() : 1);
 		if(ARB_direct_state_access)
-			glTextureStorage3D(id, n_levels, ifmt, width, height, depth);
+			glTextureStorage3D(id, levels, ifmt, width, height, depth);
 		else
 		{
 			BindRestore _bind(this);
-			glTexStorage3D(target, n_levels, ifmt, width, height, depth);
+			glTexStorage3D(target, levels, ifmt, width, height, depth);
 		}
-		allocated |= (1<<n_levels)-1;
+		allocated |= (1<<levels)-1;
 	}
 	else
 	{
@@ -181,7 +187,10 @@ void Texture3D::image(const Graphics::Image &img, bool srgb)
 
 	PixelFormat fmt = pixelformat_from_graphics(img.get_format());
 	if(width==0)
-		storage(storage_pixelformat_from_graphics(img.get_format(), srgb), w, h, d);
+	{
+		unsigned l = (is_mipmapped(min_filter) ? mipmap_levels ? mipmap_levels : 0 : 1);
+		storage(storage_pixelformat_from_graphics(img.get_format(), srgb), w, h, d, l);
+	}
 	else if(w!=width || h!=height || d!=depth)
 		throw incompatible_data("Texture3D::load_image");