+++ /dev/null
-#include <msp/core/raii.h>
-#include <msp/gl/extensions/arb_direct_state_access.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;
-
-namespace Msp {
-namespace GL {
-
-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),
- width(0),
- height(0),
- allocated(0)
-{ }
-
-Texture2D::~Texture2D()
-{
- set_manager(0);
-}
-
-void Texture2D::storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned lv)
-{
- if(width>0)
- throw invalid_operation("Texture2D::storage");
- if(wd==0 || ht==0)
- throw invalid_argument("Texture2D::storage");
-
- set_internal_format(fmt);
- width = wd;
- height = ht;
- levels = get_n_levels();
- if(lv>0)
- levels = min(levels, lv);
-}
-
-void Texture2D::allocate(unsigned level)
-{
- if(width==0 || height==0)
- throw invalid_operation("Texture2D::allocate");
- if(level>=levels)
- throw invalid_argument("Texture2D::allocate");
- if(allocated&(1<<level))
- return;
-
- if(ARB_texture_storage)
- {
- Conditional<BindRestore> _bind(!ARB_direct_state_access, this);
- if(ARB_direct_state_access)
- glTextureStorage2D(id, levels, ifmt, width, height);
- else
- glTexStorage2D(target, levels, ifmt, width, height);
- apply_swizzle();
- allocated |= (1<<levels)-1;
- }
- else
- image(level, get_components(ifmt), get_component_type(ifmt), 0);
-}
-
-void Texture2D::image(unsigned level, PixelComponents comp, 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);
-
- if(ARB_texture_storage)
- return sub_image(level, 0, 0, w, h, comp, type, data);
-
- BindRestore _bind(this);
-
- if(!allocated)
- {
- glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
- apply_swizzle();
- }
- glTexImage2D(target, level, ifmt, w, h, 0, get_upload_components(comp), type, data);
-
- allocated |= 1<<level;
- if(auto_gen_mipmap && level==0)
- {
- generate_mipmap();
- allocated |= (1<<levels)-1;
- }
-}
-
-void Texture2D::sub_image(unsigned level, int x, int y, unsigned wd, unsigned ht, PixelComponents comp, DataType type, const void *data)
-{
- if(width==0 || height==0)
- throw invalid_operation("Texture2D::sub_image");
-
- Conditional<BindRestore> _bind(!ARB_direct_state_access, this);
- allocate(level);
-
- comp = get_upload_components(comp);
- if(ARB_direct_state_access)
- glTextureSubImage2D(id, level, x, y, wd, ht, comp, type, data);
- else
- glTexSubImage2D(target, level, x, y, wd, ht, comp, type, data);
-
- if(auto_gen_mipmap && level==0)
- generate_mipmap();
-}
-
-void Texture2D::image(const Graphics::Image &img, unsigned lv, bool srgb)
-{
- image(img, lv, srgb, false);
-}
-
-void Texture2D::image(const Graphics::Image &img, unsigned lv, bool srgb, bool from_buffer)
-{
- unsigned w = img.get_width();
- unsigned h = img.get_height();
- PixelFormat fmt = pixelformat_from_image(img);
- PixelComponents comp = get_components(fmt);
- DataType type = get_component_type(fmt);
- if(width==0)
- storage(make_pixelformat(comp, type, srgb), w, h, lv);
- else if(w!=width || h!=height || (lv && lv!=levels))
- throw incompatible_data("Texture2D::image");
-
- PixelStore pstore = PixelStore::from_image(img);
- BindRestore _bind_ps(pstore);
-
- image(0, comp, type, 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_pixel_size(ifmt) : 0;
-}
-
-void Texture2D::unload()
-{
- glDeleteTextures(1, &id);
- id = 0;
- allocated = 0;
- default_sampler.unload();
-}
-
-
-Texture2D::Loader::Loader(Texture2D &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("raw_data", &Loader::raw_data);
- add("storage", &Loader::storage);
- add("storage", &Loader::storage_levels);
-}
-
-void Texture2D::Loader::raw_data(const string &data)
-{
- obj.image(0, get_components(obj.ifmt), get_component_type(obj.ifmt), data.data());
-}
-
-void Texture2D::Loader::storage(PixelFormat fmt, unsigned w, unsigned h)
-{
- obj.storage(fmt, w, h);
-}
-
-void Texture2D::Loader::storage_levels(PixelFormat fmt, unsigned w, unsigned h, unsigned l)
-{
- obj.storage(fmt, w, h, l);
-}
-
-
-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
-{
- return phase%2;
-}
-
-bool Texture2D::AsyncLoader::process()
-{
- 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.storage(n_bytes);
- mapped_address = reinterpret_cast<char *>(pixel_buffer.map());
- }
- 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)
- {
- if(ARB_direct_state_access)
- glCreateTextures(texture.target, 1, &texture.id);
- else
- glGenTextures(1, &texture.id);
- }
- texture.image(image, 0, srgb_conversion, true);
- }
-
- ++phase;
- return phase>3;
-}
-
-} // namespace GL
-} // namespace Msp
projects / libs / gl.git / blobdiff