X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Ftexture2d.cpp;h=23cb9477e122c69ddabdbf614dfafca05ed71801;hb=194f960f91041ebee44e2745627d5e480e893d82;hp=c1f6e0e9e7bd75f664cc682209b551746d3f4e48;hpb=927a1aa0a3a27e463ec0efc08bd08e7c4e969909;p=libs%2Fgl.git

diff --git a/source/texture2d.cpp b/source/texture2d.cpp
index c1f6e0e9..23cb9477 100644
--- a/source/texture2d.cpp
+++ b/source/texture2d.cpp
@@ -1,11 +1,9 @@
-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
-#include "except.h"
+#include <msp/gl/extensions/arb_texture_storage.h>
+#include "bindable.h"
+#include "buffer.h"
+#include "error.h"
+#include "pixelstore.h"
+#include "resources.h"
 #include "texture2d.h"
 
 using namespace std;
@@ -13,94 +11,258 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
-Texture2D::Texture2D():
+class Texture2D::AsyncLoader: public Resource::AsyncLoader
+{
+private:
+	Texture2D &texture;
+	IO::Seekable &io;
+	bool srgb_conversion;
+	Buffer pixel_buffer;
+	char *mapped_address;
+	Graphics::Image image;
+	unsigned n_bytes;
+	int phase;
+
+public:
+	AsyncLoader(Texture2D &, IO::Seekable &);
+
+	void set_srgb_conversion(bool);
+	virtual bool needs_sync() const;
+	virtual bool process();
+};
+
+
+Texture2D::Texture2D(ResourceManager *m):
+	Texture(GL_TEXTURE_2D, m),
+	ifmt(RGB),
 	width(0),
-	height(0)
+	height(0),
+	allocated(0)
+{ }
+
+Texture2D::~Texture2D()
 {
-	target=GL_TEXTURE_2D;
-	bind();
+	set_manager(0);
 }
 
-void Texture2D::storage(PixelFormat fmt, sizei wd, sizei 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");
+
+	if(MSP_sized_internal_formats)
+		fmt = get_sized_pixelformat(fmt);
+	require_pixelformat(fmt);
 
-	ifmt=fmt;
-	width=wd;
-	height=ht;
-	border=brd;
+	ifmt = fmt;
+	width = wd;
+	height = ht;
 }
 
-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;
+
+	if(ARB_texture_storage)
+	{
+		BindRestore _bind(this);
+		unsigned n_levels = (is_mipmapped(min_filter) ? get_n_levels() : 1);
+		glTexStorage2D(target, n_levels, ifmt, width, height);
+		allocated |= (1<<n_levels)-1;
+	}
+	else
+	{
+		PixelFormat base_fmt = get_base_pixelformat(ifmt);
+		image(level, base_fmt, get_alloc_type(base_fmt), 0);
+	}
+}
+
+void Texture2D::image(unsigned level, PixelFormat fmt, DataType type, const void *data)
+{
+	if(width==0 || height==0)
+		throw invalid_operation("Texture2D::image");
 
-	maybe_bind();
+	unsigned w = width;
+	unsigned h = height;
+	get_level_size(level, w, h);
 
-	glTexImage2D(target, level, ifmt, width, height, border, fmt, type, data);
+	if(ARB_texture_storage)
+		return sub_image(level, 0, 0, w, h, fmt, type, data);
+
+	BindRestore _bind(this);
+	glTexImage2D(target, level, ifmt, w, h, 0, fmt, type, data);
+
+	allocated |= 1<<level;
+	if(gen_mipmap && level==0)
+	{
+		auto_generate_mipmap();
+		allocated |= (1<<get_n_levels())-1;
+	}
 }
 
-void Texture2D::sub_image(int level, int x, int y, sizei wd, sizei 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");
 
-	maybe_bind();
+	BindRestore _bind(this);
+	allocate(level);
 
 	glTexSubImage2D(target, level, x, y, wd, ht, fmt, type, data);
+
+	if(gen_mipmap && level==0)
+		auto_generate_mipmap();
 }
 
-void Texture2D::load_image(const string &fn)
+void Texture2D::image(const Graphics::Image &img, bool srgb)
 {
-	Graphics::Image img;
-	img.load_file(fn);
-
-	image(img);
+	image(img, srgb, false);
 }
 
-void Texture2D::image(const Graphics::Image &img)
+void Texture2D::image(const Graphics::Image &img, bool srgb, bool from_buffer)
 {
-	unsigned w=img.get_width();
-	unsigned h=img.get_height();
-	PixelFormat fmt=pixelformat_from_graphics(img.get_format());
+	unsigned w = img.get_width();
+	unsigned h = img.get_height();
+	PixelFormat fmt = pixelformat_from_graphics(img.get_format());
 	if(width==0)
-		storage(fmt, w, h, 0);
+		storage(storage_pixelformat_from_graphics(img.get_format(), srgb), w, h);
 	else if(w!=width || h!=height)
-		throw IncompatibleData("Image does not match texture storage");
+		throw incompatible_data("Texture2D::image");
+
+	PixelStore pstore = PixelStore::from_image(img);
+	BindRestore _bind_ps(pstore);
 
-	image(0, fmt, UNSIGNED_BYTE, img.get_data());
+	image(0, fmt, UNSIGNED_BYTE, from_buffer ? 0 : img.get_data());
+}
+
+unsigned Texture2D::get_n_levels() const
+{
+	unsigned n = 0;
+	for(unsigned s=max(width, height); s; s>>=1, ++n) ;
+	return n;
+}
+
+void Texture2D::get_level_size(unsigned level, unsigned &w, unsigned &h) const
+{
+	w >>= level;
+	h >>= level;
+
+	if(!w && h)
+		w = 1;
+	else if(!h && w)
+		h = 1;
+}
+
+Resource::AsyncLoader *Texture2D::load(IO::Seekable &io, const Resources *res)
+{
+	AsyncLoader *ldr = new AsyncLoader(*this, io);
+	if(res)
+		ldr->set_srgb_conversion(res->get_srgb_conversion());
+	return ldr;
+}
+
+UInt64 Texture2D::get_data_size() const
+{
+	return id ? width*height*get_component_count(ifmt) : 0;
+}
+
+void Texture2D::unload()
+{
+	glDeleteTextures(1, &id);
+	id = 0;
+	// TODO check which params actually need refreshing
+	dirty_params = -1;
 }
 
 
 Texture2D::Loader::Loader(Texture2D &t):
-	Texture::Loader(t)
+	DataFile::DerivedObjectLoader<Texture2D, Texture::Loader>(t)
+{
+	init();
+}
+
+Texture2D::Loader::Loader(Texture2D &t, Collection &c):
+	DataFile::DerivedObjectLoader<Texture2D, Texture::Loader>(t, c)
+{
+	init();
+}
+
+void Texture2D::Loader::init()
 {
-	add("image_data", &Loader::image_data);
 	add("raw_data", &Loader::raw_data);
 	add("storage", &Loader::storage);
 }
 
-void Texture2D::Loader::image_data(const string &data)
+void Texture2D::Loader::raw_data(const string &data)
 {
-	Graphics::Image img;
-	img.load_memory(data.data(), data.size());
+	obj.image(0, get_base_pixelformat(obj.ifmt), UNSIGNED_BYTE, data.data());
+}
 
-	static_cast<Texture2D &>(obj).image(img);
+void Texture2D::Loader::storage(PixelFormat fmt, unsigned w, unsigned h)
+{
+	if(srgb)
+		fmt = get_srgb_pixelformat(fmt);
+	obj.storage(fmt, w, h);
 }
 
-void Texture2D::Loader::raw_data(const string &data)
+
+Texture2D::AsyncLoader::AsyncLoader(Texture2D &t, IO::Seekable &i):
+	texture(t),
+	io(i),
+	srgb_conversion(false),
+	pixel_buffer(PIXEL_UNPACK_BUFFER),
+	mapped_address(0),
+	phase(0)
+{ }
+
+void Texture2D::AsyncLoader::set_srgb_conversion(bool c)
+{
+	srgb_conversion = c;
+}
+
+bool Texture2D::AsyncLoader::needs_sync() const
 {
-	Texture2D &t2d=static_cast<Texture2D &>(obj);
-	t2d.image(0, t2d.ifmt, UNSIGNED_BYTE, data.data());
+	return phase%2;
 }
 
-void Texture2D::Loader::storage(PixelFormat fmt, unsigned w, unsigned h, unsigned b)
+bool Texture2D::AsyncLoader::process()
 {
-	static_cast<Texture2D &>(obj).storage(fmt, w, h, b);
+	if(phase==0)
+	{
+		/* TODO Enhance the ImageLoader system so that the image can be loaded
+		directly to the buffer */
+		image.load_io(io);
+		n_bytes = image.get_stride()*image.get_height();
+	}
+	else if(phase==1)
+	{
+		pixel_buffer.data(n_bytes, 0);
+		mapped_address = reinterpret_cast<char *>(pixel_buffer.map(WRITE_ONLY));
+	}
+	else if(phase==2)
+	{
+		const char *data = reinterpret_cast<const char *>(image.get_data());
+		copy(data, data+n_bytes, mapped_address);
+	}
+	else if(phase==3)
+	{
+		Bind _bind_buf(pixel_buffer, PIXEL_UNPACK_BUFFER);
+		if(!pixel_buffer.unmap())
+		{
+			phase = 1;
+			return false;
+		}
+
+		if(!texture.id)
+			glGenTextures(1, &texture.id);
+		texture.image(image, srgb_conversion, true);
+	}
+
+	++phase;
+	return phase>3;
 }
 
 } // namespace GL