+++ /dev/null
-#include <msp/datafile/collection.h>
-#include <msp/gl/extensions/arb_texture_cube_map.h>
-#include <msp/io/memory.h>
-#include <msp/strings/format.h>
-#include "bindable.h"
-#include "error.h"
-#include "pixelstore.h"
-#include "texturecube.h"
-
-using namespace std;
-
-namespace Msp {
-namespace GL {
-
-Vector3 TextureCube::directions[6] =
-{
- Vector3(1, 0, 0),
- Vector3(-1, 0, 0),
- Vector3(0, 1, 0),
- Vector3(0, -1, 0),
- Vector3(0, 0, 1),
- Vector3(0, 0, -1)
-};
-
-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)
-{
- 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;
- size = sz;
-}
-
-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);
-}
-
-void TextureCube::image(TextureCubeFace face, unsigned level, PixelFormat fmt, DataType type, const void *data)
-{
- if(size==0)
- throw invalid_operation("TextureCube::image");
-
- unsigned s = get_level_size(level);
- if(s==0)
- throw out_of_range("TextureCube::image");
-
- 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)
- {
- // TODO Only do this once all faces are created
- auto_generate_mipmap();
- 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();
- unsigned h = img.get_height();
- PixelFormat fmt = pixelformat_from_graphics(img.get_format());
- if(size==0)
- {
- if(w!=h)
- throw incompatible_data("TextureCube::image");
-
- storage(storage_pixelformat_from_graphics(img.get_format(), 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());
-}
-
-void TextureCube::image(const Graphics::Image &img, bool srgb)
-{
- unsigned w = img.get_width();
- unsigned h = img.get_height();
-
- if(h!=w*6)
- throw incompatible_data("TextureCube::image");
- h /= 6;
-
- PixelFormat fmt = pixelformat_from_graphics(img.get_format());
- if(size==0)
- storage(storage_pixelformat_from_graphics(img.get_format(), srgb), w);
- 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());
- 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);
-}
-
-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;
-}
-
-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");
- }
-}
-
-const Vector3 &TextureCube::get_face_direction(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");
- }
-}
-
-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");
- }
-}
-
-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");
- }
-}
-
-Vector3 TextureCube::get_texel_direction(TextureCubeFace face, unsigned u, unsigned v)
-{
- float s = (u+0.5f)*2.0f/size-1.0f;
- float t = (v+0.5f)*2.0f/size-1.0f;
- const Vector3 &fv = get_face_direction(face);
- const Vector3 &sv = get_s_direction(face);
- const Vector3 &tv = get_t_direction(face);
- return fv+s*sv+t*tv;
-}
-
-UInt64 TextureCube::get_data_size() const
-{
- return id ? size*size*6*get_pixel_size(ifmt) : 0;
-}
-
-
-TextureCube::Loader::Loader(TextureCube &t):
- DataFile::DerivedObjectLoader<TextureCube, Texture::Loader>(t)
-{
- init();
-}
-
-TextureCube::Loader::Loader(TextureCube &t, Collection &c):
- DataFile::DerivedObjectLoader<TextureCube, Texture::Loader>(t, c)
-{
- init();
-}
-
-void TextureCube::Loader::init()
-{
- add("external_image", &Loader::external_image);
- add("image_data", &Loader::image_data);
- add("raw_data", &Loader::raw_data);
- add("storage", &Loader::storage);
-}
-
-void TextureCube::Loader::external_image(TextureCubeFace face, const string &fn)
-{
- Graphics::Image img;
- RefPtr<IO::Seekable> io = get_collection().open_raw(fn);
- img.load_io(*io);
-
- obj.image(face, img, srgb);
-}
-
-void TextureCube::Loader::image_data(TextureCubeFace face, const string &data)
-{
- Graphics::Image img;
- IO::Memory mem(data.data(), data.size());
- img.load_io(mem);
-
- obj.image(face, img, srgb);
-}
-
-void TextureCube::Loader::raw_data(TextureCubeFace face, const string &data)
-{
- obj.image(face, 0, get_base_pixelformat(obj.ifmt), UNSIGNED_BYTE, data.data());
-}
-
-void TextureCube::Loader::storage(PixelFormat fmt, unsigned s)
-{
- if(srgb)
- fmt = get_srgb_pixelformat(fmt);
- obj.storage(fmt, s);
-}
-
-
-void operator>>(const LexicalConverter &conv, TextureCubeFace &face)
-{
- const string &str = conv.get();
- if(str=="POSITIVE_X")
- face = POSITIVE_X;
- else if(str=="NEGATIVE_X")
- face = NEGATIVE_X;
- else if(str=="POSITIVE_Y")
- face = POSITIVE_Y;
- else if(str=="NEGATIVE_Y")
- face = NEGATIVE_Y;
- else if(str=="POSITIVE_Z")
- face = POSITIVE_Z;
- else if(str=="NEGATIVE_Z")
- face = NEGATIVE_Z;
- else
- throw lexical_error(format("conversion of '%s' to TextureCubeFace", str));
-}
-
-} // namespace GL
-} // namespace Msp
projects / libs / gl.git / blobdiff