X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Ftexturecube.cpp;h=54a008ca50930054ee6c99507c27c032f4ff4e6c;hb=cb836adcf11f690188df9b7bc59f3fe87b67aaa7;hp=889d051b905e490dc9006f993a24fc476871d5c5;hpb=49323eea600fb989d4181ccfd437ee12722ae733;p=libs%2Fgl.git

diff --git a/source/texturecube.cpp b/source/texturecube.cpp
index 889d051b..54a008ca 100644
--- a/source/texturecube.cpp
+++ b/source/texturecube.cpp
@@ -1,5 +1,6 @@
 #include <msp/datafile/collection.h>
 #include <msp/gl/extensions/arb_texture_cube_map.h>
+#include <msp/gl/extensions/arb_texture_storage.h>
 #include <msp/io/memory.h>
 #include <msp/strings/format.h>
 #include "bindable.h"
@@ -51,10 +52,20 @@ void TextureCube::allocate(unsigned level)
 	if(allocated&(1<<level))
 		return;
 
-	PixelFormat base_fmt = get_base_pixelformat(ifmt);
-	DataType type = get_alloc_type(base_fmt);
-	for(unsigned i=0; i<6; ++i)
-		image(enumerate_faces(i), level, base_fmt, type, 0);
+	if(ARB_texture_storage)
+	{
+		BindRestore _bind(this);
+		unsigned n_levels = (is_mipmapped(min_filter) ? get_n_levels() : 1);
+		glTexStorage2D(target, n_levels, ifmt, size, size);
+		allocated |= (1<<n_levels)-1;
+	}
+	else
+	{
+		PixelFormat base_fmt = get_base_pixelformat(ifmt);
+		DataType type = get_alloc_type(base_fmt);
+		for(unsigned i=0; i<6; ++i)
+			image(enumerate_faces(i), level, base_fmt, type, 0);
+	}
 }
 
 void TextureCube::image(TextureCubeFace face, unsigned level, PixelFormat fmt, DataType type, const void *data)
@@ -67,7 +78,10 @@ void TextureCube::image(TextureCubeFace face, unsigned level, PixelFormat fmt, D
 		throw out_of_range("TextureCube::image");
 
 	BindRestore _bind(this);
-	glTexImage2D(face, level, ifmt, s, s, 0, fmt, type, data);
+	if(ARB_texture_storage)
+		sub_image(face, level, 0, 0, s, s, fmt, type, data);
+	else
+		glTexImage2D(face, level, ifmt, s, s, 0, fmt, type, data);
 
 	// XXX Allocation should be tracked per-face, but we'll run out of bits
 	allocated |= 1<<level;
@@ -75,11 +89,21 @@ void TextureCube::image(TextureCubeFace face, unsigned level, PixelFormat fmt, D
 	{
 		// TODO Only do this once all faces are created
 		auto_generate_mipmap();
-		for(; s; s>>=1, ++level) ;
-		allocated |= (1<<level)-1;
+		allocated |= (1<<get_n_levels())-1;
 	}
 }
 
+void TextureCube::sub_image(TextureCubeFace face, unsigned level, int x, int y, unsigned wd, unsigned ht, PixelFormat fmt, DataType type, const void *data)
+{
+	if(size==0)
+		throw invalid_operation("TextureCube::sub_image");
+
+	allocate(level);
+
+	BindRestore _bind(this);
+	glTexSubImage2D(face, level, x, y, wd, ht, fmt, type, data);
+}
+
 void TextureCube::image(TextureCubeFace face, const Graphics::Image &img, bool srgb)
 {
 	unsigned w = img.get_width();
@@ -125,7 +149,14 @@ void TextureCube::image(const Graphics::Image &img, bool srgb)
 		image(enumerate_faces(i), 0, fmt, UNSIGNED_BYTE, cdata+i*face_size);
 }
 
-unsigned TextureCube::get_level_size(unsigned level)
+unsigned TextureCube::get_n_levels() const
+{
+	unsigned n = 0;
+	for(unsigned s=size; s; s>>=1, ++n) ;
+	return n;
+}
+
+unsigned TextureCube::get_level_size(unsigned level) const
 {
 	return size>>level;
 }