X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fpixelstore.cpp;h=e1a7cc0ef9ea378bce5db24f7035500b00829a36;hp=011866e3e72410a44031a0b154367c621bebb44f;hb=133fe7352831197c9ec59f923c1126651d80edcb;hpb=126161d1d44ab9503bc747d24a07b7b9d15e527a

diff --git a/source/pixelstore.cpp b/source/pixelstore.cpp
index 011866e3..e1a7cc0e 100644
--- a/source/pixelstore.cpp
+++ b/source/pixelstore.cpp
@@ -1,4 +1,6 @@
 #include <algorithm>
+#include <msp/gl/extensions/ext_texture3d.h>
+#include <msp/gl/extensions/ext_unpack_subimage.h>
 #include "gl.h"
 #include "pixelformat.h"
 #include "pixelstore.h"
@@ -35,13 +37,15 @@ void PixelStore::update_parameter(int mask) const
 	if(mask&SIZE)
 	{
 		glPixelStorei(GL_UNPACK_ROW_LENGTH, row_length);
-		glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, image_height);
+		if(EXT_texture3D)
+			glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, image_height);
 	}
 	if(mask&ORIGIN)
 	{
 		glPixelStorei(GL_UNPACK_SKIP_PIXELS, skip_pixels);
 		glPixelStorei(GL_UNPACK_SKIP_ROWS, skip_rows);
-		glPixelStorei(GL_UNPACK_SKIP_IMAGES, skip_images);
+		if(EXT_texture3D)
+			glPixelStorei(GL_UNPACK_SKIP_IMAGES, skip_images);
 	}
 	if(mask&ALIGNMENT)
 		glPixelStorei(GL_UNPACK_ALIGNMENT, alignment);
@@ -49,6 +53,7 @@ void PixelStore::update_parameter(int mask) const
 
 void PixelStore::set_canvas_size(unsigned w, unsigned h)
 {
+	static Require _req(EXT_unpack_subimage);
 	row_length = w;
 	image_height = h;
 	update_parameter(SIZE);
@@ -56,6 +61,9 @@ void PixelStore::set_canvas_size(unsigned w, unsigned h)
 
 void PixelStore::set_origin(unsigned x, unsigned y, unsigned z)
 {
+	static Require _req(EXT_unpack_subimage);
+	if(z>0)
+		static Require _req3d(EXT_texture3D);
 	skip_pixels = x;
 	skip_rows = y;
 	skip_images = z;