X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Ftexturecube.cpp;h=6ec3662523dea02903e024bb9113b91125e4b711;hp=65b1845eaf9ca5f1bb82f9886ada4ed0eed46472;hb=bec07999d95b76f4b47cffcc564d0cd0afc0435e;hpb=e01371d38e290b4c526146fd5d1388bba8201233

diff --git a/source/texturecube.cpp b/source/texturecube.cpp
index 65b1845e..6ec36625 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"
@@ -12,6 +13,16 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
+TextureCubeFace TextureCube::face_order[6] =
+{
+	POSITIVE_X,
+	NEGATIVE_X,
+	POSITIVE_Y,
+	NEGATIVE_Y,
+	POSITIVE_Z,
+	NEGATIVE_Z
+};
+
 Vector3 TextureCube::directions[6] =
 {
 	Vector3(1, 0, 0),
@@ -22,42 +33,62 @@ Vector3 TextureCube::directions[6] =
 	Vector3(0, 0, -1)
 };
 
+unsigned TextureCube::orientations[12] =
+{
+	5, 3,
+	4, 3,
+	0, 4,
+	0, 5,
+	0, 3,
+	1, 3
+};
+
 TextureCube::TextureCube():
 	Texture(GL_TEXTURE_CUBE_MAP),
-	ifmt(RGB),
 	size(0),
 	allocated(0)
 {
 	static Require _req(ARB_texture_cube_map);
 }
 
-void TextureCube::storage(PixelFormat fmt, unsigned sz)
+void TextureCube::storage(PixelFormat fmt, unsigned sz, unsigned lv)
 {
 	if(size>0)
 		throw invalid_operation("TextureCube::storage");
 	if(sz==0)
 		throw invalid_argument("TextureCube::storage");
 
-	if(MSP_sized_internal_formats)
-		fmt = get_sized_pixelformat(fmt);
-	require_pixelformat(fmt);
-
-	ifmt = fmt;
+	set_format(fmt);
 	size = sz;
+	levels = get_n_levels();
+	if(lv>0)
+		levels = min(levels, lv);
 }
 
 void TextureCube::allocate(unsigned level)
 {
-	if(allocated&(1<<level))
+	if(size==0)
+		throw invalid_operation("TextureCube::allocate");
+	if(level>=levels)
+		throw invalid_argument("TextureCube::allocate");
+	if(allocated&(64<<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);
+		glTexStorage2D(target, levels, storage_fmt, size, size);
+		apply_swizzle();
+		allocated |= (1<<levels)-1;
+	}
+	else
+	{
+		for(unsigned i=0; i<6; ++i)
+			image(enumerate_faces(i), level, 0);
+	}
 }
 
-void TextureCube::image(TextureCubeFace face, unsigned level, PixelFormat fmt, DataType type, const void *data)
+void TextureCube::image(TextureCubeFace face, unsigned level, const void *data)
 {
 	if(size==0)
 		throw invalid_operation("TextureCube::image");
@@ -66,41 +97,85 @@ void TextureCube::image(TextureCubeFace face, unsigned level, PixelFormat fmt, D
 	if(s==0)
 		throw out_of_range("TextureCube::image");
 
+	if(ARB_texture_storage)
+		return sub_image(face, level, 0, 0, s, s, data);
+
 	BindRestore _bind(this);
-	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;
-	if(gen_mipmap && level==0)
+	if(!allocated)
 	{
-		// TODO Only do this once all faces are created
-		auto_generate_mipmap();
-		allocated |= (1<<get_n_levels())-1;
+		glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
+		apply_swizzle();
 	}
+
+	PixelComponents comp = get_components(storage_fmt);
+	DataType type = get_component_type(storage_fmt);
+	glTexImage2D(face, level, storage_fmt, s, s, 0, comp, type, data);
+
+	if(level==0)
+	{
+		allocated |= 1<<get_face_index(face);
+		if((allocated&63)==63)
+		{
+			allocated |= 64;
+			if(auto_gen_mipmap)
+			{
+				generate_mipmap();
+				allocated |= (64<<levels)-1;
+			}
+		}
+	}
+	else if(!(allocated&(64<<level)))
+	{
+		for(unsigned i=0; i<6; ++i)
+			if(enumerate_faces(i)!=face)
+				glTexImage2D(enumerate_faces(i), level, storage_fmt, s, s, 0, comp, type, 0);
+
+		allocated |= 64<<level;
+	}
+}
+
+void TextureCube::image(TextureCubeFace face, unsigned level, PixelComponents comp, DataType type, const void *data)
+{
+	if(comp!=get_components(format) || type!=get_component_type(format))
+		throw incompatible_data("TextureCube::image");
+	image(face, level, data);
 }
 
-void TextureCube::sub_image(TextureCubeFace face, unsigned level, int x, int y, unsigned wd, unsigned ht, PixelFormat fmt, DataType type, const void *data)
+void TextureCube::sub_image(TextureCubeFace face, unsigned level, int x, int y, unsigned wd, unsigned ht, const void *data)
 {
 	if(size==0)
 		throw invalid_operation("TextureCube::sub_image");
 
+	BindRestore _bind(this);
 	allocate(level);
 
-	BindRestore _bind(this);
-	glTexSubImage2D(face, level, x, y, wd, ht, fmt, type, data);
+	PixelComponents comp = get_components(storage_fmt);
+	DataType type = get_component_type(storage_fmt);
+	glTexSubImage2D(face, level, x, y, wd, ht, comp, type, data);
+
+	if(auto_gen_mipmap && level==0)
+		generate_mipmap();
 }
 
-void TextureCube::image(TextureCubeFace face, const Graphics::Image &img, bool srgb)
+void TextureCube::sub_image(TextureCubeFace face, unsigned level, int x, int y, unsigned wd, unsigned ht, PixelComponents comp, DataType type, const void *data)
+{
+	if(comp!=get_components(format) || type!=get_component_type(format))
+		throw incompatible_data("TextureCube::subimage");
+	sub_image(face, level, x, y, wd, ht, data);
+}
+
+void TextureCube::image(TextureCubeFace face, const Graphics::Image &img)
 {
 	unsigned w = img.get_width();
 	unsigned h = img.get_height();
-	PixelFormat fmt = pixelformat_from_graphics(img.get_format());
+	PixelFormat fmt = pixelformat_from_image(img);
 	if(size==0)
 	{
 		if(w!=h)
 			throw incompatible_data("TextureCube::image");
 
-		storage(storage_pixelformat_from_graphics(img.get_format(), srgb), w);
+		storage(make_pixelformat(get_components(fmt), get_component_type(fmt), use_srgb_format), w);
 	}
 	else if(w!=size || h!=size)
 		throw incompatible_data("TextureCube::image");
@@ -108,10 +183,15 @@ void TextureCube::image(TextureCubeFace face, const Graphics::Image &img, bool s
 	PixelStore pstore = PixelStore::from_image(img);
 	BindRestore _bind_ps(pstore);
 
-	image(face, 0, fmt, UNSIGNED_BYTE, img.get_data());
+	image(face, 0, img.get_pixels());
 }
 
-void TextureCube::image(const Graphics::Image &img, bool srgb)
+void TextureCube::image(TextureCubeFace face, const Graphics::Image &img, bool)
+{
+	image(face, img);
+}
+
+void TextureCube::image(const Graphics::Image &img, unsigned lv)
 {
 	unsigned w = img.get_width();
 	unsigned h = img.get_height();
@@ -120,19 +200,19 @@ void TextureCube::image(const Graphics::Image &img, bool srgb)
 		throw incompatible_data("TextureCube::image");
 	h /= 6;
 
-	PixelFormat fmt = pixelformat_from_graphics(img.get_format());
+	PixelFormat fmt = pixelformat_from_image(img);
 	if(size==0)
-		storage(storage_pixelformat_from_graphics(img.get_format(), srgb), w);
+		storage(make_pixelformat(get_components(fmt), get_component_type(fmt), use_srgb_format), w, lv);
 	else if(w!=size || h!=size)
 		throw incompatible_data("TextureCube::image");
 
 	PixelStore pstore = PixelStore::from_image(img);
 	BindRestore _bind_ps(pstore);
 
-	const char *cdata = reinterpret_cast<const char *>(img.get_data());
+	const char *pixels = reinterpret_cast<const char *>(img.get_pixels());
 	unsigned face_size = img.get_stride()*size;
 	for(unsigned i=0; i<6; ++i)
-		image(enumerate_faces(i), 0, fmt, UNSIGNED_BYTE, cdata+i*face_size);
+		image(enumerate_faces(i), 0, pixels+i*face_size);
 }
 
 unsigned TextureCube::get_n_levels() const
@@ -149,58 +229,38 @@ unsigned TextureCube::get_level_size(unsigned level) const
 
 TextureCubeFace TextureCube::enumerate_faces(unsigned i)
 {
-	switch(i)
-	{
-	case 0: return POSITIVE_X;
-	case 1: return NEGATIVE_X;
-	case 2: return POSITIVE_Y;
-	case 3: return NEGATIVE_Y;
-	case 4: return POSITIVE_Z;
-	case 5: return NEGATIVE_Z;
-	default: throw out_of_range("TextureCube::enumerate_faces");
-	}
+	if(i>=6)
+		throw out_of_range("TextureCube::enumerate_faces");
+	return face_order[i];
 }
 
-const Vector3 &TextureCube::get_face_direction(TextureCubeFace face)
+unsigned TextureCube::get_face_index(TextureCubeFace face)
 {
 	switch(face)
 	{
-	case POSITIVE_X: return directions[0];
-	case NEGATIVE_X: return directions[1];
-	case POSITIVE_Y: return directions[2];
-	case NEGATIVE_Y: return directions[3];
-	case POSITIVE_Z: return directions[4];
-	case NEGATIVE_Z: return directions[5];
-	default: throw invalid_argument("TextureCube::get_face_direction");
+	case POSITIVE_X: return 0;
+	case NEGATIVE_X: return 1;
+	case POSITIVE_Y: return 2;
+	case NEGATIVE_Y: return 3;
+	case POSITIVE_Z: return 4;
+	case NEGATIVE_Z: return 5;
+	default: throw invalid_argument("TextureCube::get_face_index");
 	}
 }
 
+const Vector3 &TextureCube::get_face_direction(TextureCubeFace face)
+{
+	return directions[get_face_index(face)];
+}
+
 const Vector3 &TextureCube::get_s_direction(TextureCubeFace face)
 {
-	switch(face)
-	{
-	case POSITIVE_X: return directions[5];
-	case NEGATIVE_X: return directions[4];
-	case POSITIVE_Y: return directions[0];
-	case NEGATIVE_Y: return directions[0];
-	case POSITIVE_Z: return directions[0];
-	case NEGATIVE_Z: return directions[1];
-	default: throw invalid_argument("TextureCube::get_s_direction");
-	}
+	return directions[orientations[get_face_index(face)*2]];
 }
 
 const Vector3 &TextureCube::get_t_direction(TextureCubeFace face)
 {
-	switch(face)
-	{
-	case POSITIVE_X: return directions[3];
-	case NEGATIVE_X: return directions[3];
-	case POSITIVE_Y: return directions[4];
-	case NEGATIVE_Y: return directions[5];
-	case POSITIVE_Z: return directions[3];
-	case NEGATIVE_Z: return directions[3];
-	default: throw invalid_argument("TextureCube::get_t_direction");
-	}
+	return directions[orientations[get_face_index(face)*2+1]];
 }
 
 Vector3 TextureCube::get_texel_direction(TextureCubeFace face, unsigned u, unsigned v)
@@ -215,7 +275,7 @@ Vector3 TextureCube::get_texel_direction(TextureCubeFace face, unsigned u, unsig
 
 UInt64 TextureCube::get_data_size() const
 {
-	return id ? size*size*6*get_pixel_size(ifmt) : 0;
+	return id ? size*size*6*get_pixel_size(storage_fmt) : 0;
 }
 
 
@@ -237,6 +297,7 @@ void TextureCube::Loader::init()
 	add("image_data", &Loader::image_data);
 	add("raw_data", &Loader::raw_data);
 	add("storage", &Loader::storage);
+	add("storage", &Loader::storage_levels);
 }
 
 void TextureCube::Loader::external_image(TextureCubeFace face, const string &fn)
@@ -245,7 +306,7 @@ void TextureCube::Loader::external_image(TextureCubeFace face, const string &fn)
 	RefPtr<IO::Seekable> io = get_collection().open_raw(fn);
 	img.load_io(*io);
 
-	obj.image(face, img, srgb);
+	obj.image(face, img);
 }
 
 void TextureCube::Loader::image_data(TextureCubeFace face, const string &data)
@@ -254,21 +315,24 @@ void TextureCube::Loader::image_data(TextureCubeFace face, const string &data)
 	IO::Memory mem(data.data(), data.size());
 	img.load_io(mem);
 
-	obj.image(face, img, srgb);
+	obj.image(face, img);
 }
 
 void TextureCube::Loader::raw_data(TextureCubeFace face, const string &data)
 {
-	obj.image(face, 0, get_base_pixelformat(obj.ifmt), UNSIGNED_BYTE, data.data());
+	obj.image(face, 0, data.data());
 }
 
 void TextureCube::Loader::storage(PixelFormat fmt, unsigned s)
 {
-	if(srgb)
-		fmt = get_srgb_pixelformat(fmt);
 	obj.storage(fmt, s);
 }
 
+void TextureCube::Loader::storage_levels(PixelFormat fmt, unsigned s, unsigned l)
+{
+	obj.storage(fmt, s, l);
+}
+
 
 void operator>>(const LexicalConverter &conv, TextureCubeFace &face)
 {