X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;ds=sidebyside;f=source%2Ftexture3d.cpp;h=d04a17e1fbb38bf81c507f9798406f75ca3b2942;hb=cb836adcf11f690188df9b7bc59f3fe87b67aaa7;hp=12fc856b8415d4e9cc18ac95c2a9c548a79cf79f;hpb=e01371d38e290b4c526146fd5d1388bba8201233;p=libs%2Fgl.git

diff --git a/source/texture3d.cpp b/source/texture3d.cpp
index 12fc856b..d04a17e1 100644
--- a/source/texture3d.cpp
+++ b/source/texture3d.cpp
@@ -1,4 +1,5 @@
 #include <cmath>
+#include <msp/gl/extensions/arb_texture_storage.h>
 #include <msp/gl/extensions/ext_texture3d.h>
 #include <msp/graphics/image.h>
 #include "bindable.h"
@@ -53,8 +54,18 @@ void Texture3D::allocate(unsigned level)
 	if(allocated&(1<<level))
 		return;
 
-	PixelFormat base_fmt = get_base_pixelformat(ifmt);
-	image(level, base_fmt, get_alloc_type(base_fmt), 0);
+	if(ARB_texture_storage)
+	{
+		BindRestore _bind(this);
+		unsigned n_levels = (is_mipmapped(min_filter) ? get_n_levels() : 1);
+		glTexStorage3D(target, n_levels, ifmt, width, height, depth);
+		allocated |= (1<<n_levels)-1;
+	}
+	else
+	{
+		PixelFormat base_fmt = get_base_pixelformat(ifmt);
+		image(level, base_fmt, get_alloc_type(base_fmt), 0);
+	}
 }
 
 void Texture3D::image(unsigned level, PixelFormat fmt, DataType type, const void *data)
@@ -68,7 +79,10 @@ void Texture3D::image(unsigned level, PixelFormat fmt, DataType type, const void
 	get_level_size(level, w, h, d);
 
 	BindRestore _bind(this);
-	glTexImage3D(target, level, ifmt, width, height, depth, 0, fmt, type, data);
+	if(ARB_texture_storage)
+		sub_image(level, 0, 0, 0, w, h, d, fmt, type, data);
+	else
+		glTexImage3D(target, level, ifmt, width, height, depth, 0, fmt, type, data);
 
 	allocated |= 1<<level;
 	if(gen_mipmap && level==0)