#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"
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),
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_internal_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, ifmt, size, size);
+ apply_swizzle();
+ allocated |= (1<<levels)-1;
+ }
+ else
+ {
+ PixelComponents comp = get_components(ifmt);
+ DataType type = get_component_type(ifmt);
+ for(unsigned i=0; i<6; ++i)
+ image(enumerate_faces(i), level, comp, type, 0);
+ }
}
-void TextureCube::image(TextureCubeFace face, unsigned level, PixelFormat fmt, DataType type, const void *data)
+void TextureCube::image(TextureCubeFace face, unsigned level, PixelComponents comp, DataType type, const void *data)
{
if(size==0)
throw invalid_operation("TextureCube::image");
if(s==0)
throw out_of_range("TextureCube::image");
+ if(ARB_texture_storage)
+ return sub_image(face, level, 0, 0, s, s, comp, type, 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)
+ {
+ glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
+ apply_swizzle();
+ }
+ glTexImage2D(face, level, ifmt, s, s, 0, get_upload_components(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)))
{
- // TODO Only do this once all faces are created
- auto_generate_mipmap();
- allocated |= (1<<get_n_levels())-1;
+ for(unsigned i=0; i<6; ++i)
+ if(enumerate_faces(i)!=face)
+ glTexImage2D(enumerate_faces(i), level, ifmt, s, s, 0, comp, type, 0);
+
+ allocated |= 64<<level;
}
}
-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, PixelComponents comp, DataType type, 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);
+ glTexSubImage2D(face, level, x, y, wd, ht, get_upload_components(comp), type, data);
+
+ if(auto_gen_mipmap && level==0)
+ generate_mipmap();
}
void TextureCube::image(TextureCubeFace face, const Graphics::Image &img, bool srgb)
{
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), srgb), w);
}
else if(w!=size || h!=size)
throw incompatible_data("TextureCube::image");
PixelStore pstore = PixelStore::from_image(img);
BindRestore _bind_ps(pstore);
- image(face, 0, fmt, UNSIGNED_BYTE, img.get_data());
+ image(face, 0, get_components(fmt), get_component_type(fmt), img.get_data());
}
-void TextureCube::image(const Graphics::Image &img, bool srgb)
+void TextureCube::image(const Graphics::Image &img, unsigned lv, bool srgb)
{
unsigned w = img.get_width();
unsigned h = img.get_height();
throw incompatible_data("TextureCube::image");
h /= 6;
- PixelFormat fmt = pixelformat_from_graphics(img.get_format());
+ PixelFormat fmt = pixelformat_from_image(img);
+ PixelComponents comp = get_components(fmt);
+ DataType type = get_component_type(fmt);
if(size==0)
- storage(storage_pixelformat_from_graphics(img.get_format(), srgb), w);
+ storage(make_pixelformat(comp, type, srgb), w, lv);
else if(w!=size || h!=size)
throw incompatible_data("TextureCube::image");
const char *cdata = reinterpret_cast<const char *>(img.get_data());
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, comp, type, cdata+i*face_size);
}
unsigned TextureCube::get_n_levels() 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)
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)
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, get_components(obj.ifmt), get_component_type(obj.ifmt), 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)
{
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