X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Ftexture1d.cpp;h=ed7d8f6e2b877fd4f660d71dbdc72874ef3de34b;hb=9b430dbef4f58a862320ebfcef7d1f8bff28b0dc;hp=78c9ed0c54209a067c51516126b797289ddb82d4;hpb=49323eea600fb989d4181ccfd437ee12722ae733;p=libs%2Fgl.git

diff --git a/source/texture1d.cpp b/source/texture1d.cpp
index 78c9ed0c..ed7d8f6e 100644
--- a/source/texture1d.cpp
+++ b/source/texture1d.cpp
@@ -1,3 +1,4 @@
+#include <msp/gl/extensions/arb_texture_storage.h>
 #include <msp/gl/extensions/msp_texture1d.h>
 #include "bindable.h"
 #include "error.h"
@@ -37,8 +38,18 @@ void Texture1D::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);
+		glTexStorage1D(target, n_levels, ifmt, width);
+		allocated |= (1<<n_levels)-1;
+	}
+	else
+	{
+		PixelFormat base_fmt = get_base_pixelformat(ifmt);
+		image(level, base_fmt, get_alloc_type(base_fmt), 0);
+	}
 }
 
 void Texture1D::image(unsigned level, PixelFormat fmt, DataType type, const void *data)
@@ -48,6 +59,9 @@ void Texture1D::image(unsigned level, PixelFormat fmt, DataType type, const void
 
 	unsigned w = get_level_size(level);
 
+	if(ARB_texture_storage)
+		return sub_image(level, 0, w, fmt, type, data);
+
 	BindRestore _bind(this);
 	glTexImage1D(target, level, ifmt, w, 0, fmt, type, data);
 
@@ -55,8 +69,7 @@ void Texture1D::image(unsigned level, PixelFormat fmt, DataType type, const void
 	if(gen_mipmap && level==0)
 	{
 		auto_generate_mipmap();
-		for(; w; w>>=1, ++level) ;
-		allocated |= (1<<level)-1;
+		allocated |= (1<<get_n_levels())-1;
 	}
 }
 
@@ -65,10 +78,13 @@ void Texture1D::sub_image(unsigned level, int x, unsigned wd, PixelFormat fmt, D
 	if(width==0)
 		throw invalid_operation("Texture3D::image");
 
+	BindRestore _bind(this);
 	allocate(level);
 
-	BindRestore _bind(this);
 	glTexSubImage1D(target, level, x, wd, fmt, type, data);
+
+	if(gen_mipmap && level==0)
+		auto_generate_mipmap();
 }
 
 void Texture1D::image(const Graphics::Image &img, bool srgb)
@@ -86,7 +102,14 @@ void Texture1D::image(const Graphics::Image &img, bool srgb)
 	image(0, fmt, UNSIGNED_BYTE, img.get_data());
 }
 
-unsigned Texture1D::get_level_size(unsigned level)
+unsigned Texture1D::get_n_levels() const
+{
+	unsigned n = 0;
+	for(unsigned s=width; s; s>>=1, ++n) ;
+	return n;
+}
+
+unsigned Texture1D::get_level_size(unsigned level) const
 {
 	return width>>level;
 }