X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Ftexture2d.cpp;h=0e9b40c6320d0a5514a9bde091abffe5cb131d69;hb=ae9abd6be3e556d0a202cc5ab05668da715382c9;hp=8935933f995117322069ad1652b6b1d9ffc87d0c;hpb=7e9e15a12fb398798f2719545cc8553354c1e389;p=libs%2Fgl.git

diff --git a/source/texture2d.cpp b/source/texture2d.cpp
index 8935933f..0e9b40c6 100644
--- a/source/texture2d.cpp
+++ b/source/texture2d.cpp
@@ -1,12 +1,6 @@
-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
+#include <msp/io/memory.h>
 #include "bindable.h"
-#include "except.h"
+#include "error.h"
 #include "texture2d.h"
 
 using namespace std;
@@ -17,35 +11,57 @@ namespace GL {
 Texture2D::Texture2D():
 	Texture(GL_TEXTURE_2D),
 	width(0),
-	height(0)
+	height(0),
+	allocated(0)
 { }
 
-void Texture2D::storage(PixelFormat fmt, unsigned wd, unsigned ht, int brd)
+void Texture2D::storage(PixelFormat fmt, unsigned wd, unsigned ht)
 {
 	if(width>0)
-		throw InvalidState("Texture storage may only be specified once");
+		throw invalid_operation("Texture2D::storage");
 	if(wd==0 || ht==0)
-		throw InvalidParameterValue("Invalid texture dimensions");
+		throw invalid_argument("Texture2D::storage");
+	require_pixelformat(fmt);
 
 	ifmt = fmt;
 	width = wd;
 	height = ht;
-	border = brd;
 }
 
-void Texture2D::image(int level, PixelFormat fmt, DataType type, const void *data)
+void Texture2D::allocate(unsigned level)
 {
-	if(width==0)
-		throw InvalidState("Texture storage has not been specified");
+	if(allocated&(1<<level))
+		return;
+
+	image(level, get_base_pixelformat(ifmt), UNSIGNED_BYTE, 0);
+}
+
+void Texture2D::image(unsigned level, PixelFormat fmt, DataType type, const void *data)
+{
+	if(width==0 || height==0)
+		throw invalid_operation("Texture2D::image");
+
+	unsigned w = width;
+	unsigned h = height;
+	get_level_size(level, w, h);
 
 	Bind _bind(this, true);
-	glTexImage2D(target, level, ifmt, width, height, border, fmt, type, data);
+	glTexImage2D(target, level, ifmt, w, h, 0, fmt, type, data);
+
+	allocated |= 1<<level;
+	if(gen_mipmap && level==0)
+	{
+		for(; (w || h); w>>=1, h>>=1, ++level) ;
+		allocated |= (1<<level)-1;
+	}
 }
 
-void Texture2D::sub_image(int level, int x, int y, unsigned wd, unsigned ht, PixelFormat fmt, DataType type, const void *data)
+void Texture2D::sub_image(unsigned level, int x, int y, unsigned wd, unsigned ht, PixelFormat fmt, DataType type, const void *data)
 {
-	if(width==0)
-		throw InvalidState("Texture storage has not been specified");
+	if(width==0 || height==0)
+		throw invalid_operation("Texture2D::sub_image");
+
+	allocate(level);
 
 	Bind _bind(this, true);
 	glTexSubImage2D(target, level, x, y, wd, ht, fmt, type, data);
@@ -65,39 +81,56 @@ void Texture2D::image(const Graphics::Image &img)
 	unsigned h = img.get_height();
 	PixelFormat fmt = pixelformat_from_graphics(img.get_format());
 	if(width==0)
-		storage(fmt, w, h, 0);
+		storage(fmt, w, h);
 	else if(w!=width || h!=height)
-		throw IncompatibleData("Image does not match texture storage");
+		throw incompatible_data("Texture2D::image");
 
 	image(0, fmt, UNSIGNED_BYTE, img.get_data());
 }
 
+void Texture2D::get_level_size(unsigned level, unsigned &w, unsigned &h)
+{
+	w >>= level;
+	h >>= level;
+
+	if(!w && h)
+		w = 1;
+	else if(!h && w)
+		h = 1;
+}
+
 
 Texture2D::Loader::Loader(Texture2D &t):
-	Texture::Loader(t)
+	DataFile::DerivedObjectLoader<Texture2D, Texture::Loader>(t)
 {
 	add("image_data", &Loader::image_data);
 	add("raw_data", &Loader::raw_data);
 	add("storage", &Loader::storage);
+	add("storage", &Loader::storage_b);
 }
 
 void Texture2D::Loader::image_data(const string &data)
 {
 	Graphics::Image img;
-	img.load_memory(data.data(), data.size());
+	IO::Memory mem(data.data(), data.size());
+	img.load_io(mem);
 
-	static_cast<Texture2D &>(obj).image(img);
+	obj.image(img);
 }
 
 void Texture2D::Loader::raw_data(const string &data)
 {
-	Texture2D &t2d = static_cast<Texture2D &>(obj);
-	t2d.image(0, t2d.ifmt, UNSIGNED_BYTE, data.data());
+	obj.image(0, obj.ifmt, UNSIGNED_BYTE, data.data());
+}
+
+void Texture2D::Loader::storage(PixelFormat fmt, unsigned w, unsigned h)
+{
+	obj.storage(fmt, w, h);
 }
 
-void Texture2D::Loader::storage(PixelFormat fmt, unsigned w, unsigned h, unsigned b)
+void Texture2D::Loader::storage_b(PixelFormat fmt, unsigned w, unsigned h, unsigned)
 {
-	static_cast<Texture2D &>(obj).storage(fmt, w, h, b);
+	storage(fmt, w, h);
 }
 
 } // namespace GL