-#include <msp/gl/extensions/arb_direct_state_access.h>
-#include <msp/gl/extensions/arb_texture_storage.h>
-#include <msp/gl/extensions/arb_vertex_buffer_object.h>
-#include <msp/graphics/imageloader.h>
-#include "buffer.h"
#include "error.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;
- Buffer pixel_buffer;
- char *mapped_address;
- Graphics::Image image;
- Graphics::ImageLoader *img_loader;
- unsigned n_bytes;
- int phase;
-
-public:
- AsyncLoader(Texture2D &, IO::Seekable &);
- ~AsyncLoader();
-
- 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);
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)
- {
- GLenum fmt = get_gl_pixelformat(storage_fmt);
- if(ARB_direct_state_access)
- glTextureStorage2D(id, levels, fmt, width, height);
- else
- {
- bind_scratch();
- glTexStorage2D(target, levels, fmt, width, height);
- }
- apply_swizzle();
- allocated |= (1<<levels)-1;
- }
- else
- image(level, 0);
+ allocate();
}
void Texture2D::image(unsigned level, const void *data)
{
- if(width==0 || height==0)
- throw invalid_operation("Texture2D::image");
- if(level>=levels)
- throw out_of_range("Texture2D::image");
-
LinAl::Vector<unsigned, 2> size = get_level_size(level);
-
- if(ARB_texture_storage)
- return sub_image(level, 0, 0, size.x, size.y, data);
-
- bind_scratch();
-
- if(!allocated)
- {
- glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
- apply_swizzle();
- }
-
- GLenum fmt = get_gl_pixelformat(storage_fmt);
- GLenum comp = get_gl_components(get_components(storage_fmt));
- GLenum type = get_gl_type(get_component_type(storage_fmt));
- glTexImage2D(target, level, fmt, size.x, size.y, 0, comp, type, data);
-
- allocated |= 1<<level;
+ return sub_image(level, 0, 0, size.x, size.y, data);
}
void Texture2D::sub_image(unsigned level, int x, int y, unsigned wd, unsigned ht, const void *data)
if(level>=levels)
throw out_of_range("Texture2D::sub_image");
- allocate(level);
-
- GLenum comp = get_gl_components(get_components(storage_fmt));
- GLenum type = get_gl_type(get_component_type(storage_fmt));
- if(ARB_direct_state_access)
- glTextureSubImage2D(id, level, x, y, wd, ht, comp, type, data);
- else
- {
- bind_scratch();
- glTexSubImage2D(target, level, x, y, wd, ht, comp, type, data);
- }
+ Texture2DBackend::sub_image(level, x, y, wd, ht, data);
}
void Texture2D::image(const Graphics::Image &img, unsigned lv)
{
- image(img, lv, false);
-}
-
-void Texture2D::image(const Graphics::Image &img, unsigned lv, bool from_buffer)
-{
- unsigned w = img.get_width();
- unsigned h = img.get_height();
- PixelFormat fmt = pixelformat_from_image(img);
- storage(make_pixelformat(get_components(fmt), get_component_type(fmt), use_srgb_format), w, h, lv);
-
- image(0, from_buffer ? 0 : img.get_pixels());
+ storage(pixelformat_from_image(img, use_srgb_format), img.get_width(), img.get_height(), lv);
+ image(0, img.get_pixels());
}
unsigned Texture2D::get_n_levels() const
Resource::AsyncLoader *Texture2D::load(IO::Seekable &io, const Resources *)
{
- AsyncLoader *ldr = new AsyncLoader(*this, io);
- return ldr;
+ return create_async_loader(io);
}
uint64_t Texture2D::get_data_size() const
return id ? width*height*get_pixel_size(format) : 0;
}
-void Texture2D::unload()
-{
- glDeleteTextures(1, &id);
- id = 0;
- allocated = 0;
-}
-
Texture2D::Loader::Loader(Texture2D &t):
DataFile::DerivedObjectLoader<Texture2D, Texture::Loader>(t)
void Texture2D::Loader::raw_data(const string &data)
{
if(obj.manager)
- {
obj.set_manager(0);
- if(!obj.id)
- obj.generate_id();
- }
obj.image(0, data.data());
}
obj.storage(fmt, w, h, l);
}
-
-Texture2D::AsyncLoader::AsyncLoader(Texture2D &t, IO::Seekable &i):
- texture(t),
- io(i),
- mapped_address(0),
- img_loader(Graphics::ImageLoader::open_io(io)),
- phase(0)
-{ }
-
-Texture2D::AsyncLoader::~AsyncLoader()
-{
- if(mapped_address)
- pixel_buffer.unmap();
- delete img_loader;
-}
-
-bool Texture2D::AsyncLoader::needs_sync() const
-{
- return phase%2;
-}
-
-bool Texture2D::AsyncLoader::process()
-{
- if(phase==0)
- {
- image.load_headers(*img_loader);
- 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)
- image.load_into(*img_loader, mapped_address);
- else if(phase==3)
- {
- mapped_address = 0;
- if(!pixel_buffer.unmap())
- {
- phase = 1;
- return false;
- }
-
- if(!texture.id)
- texture.generate_id();
- glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pixel_buffer.get_id());
- texture.image(image, 0, true);
- glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
- if(texture.auto_gen_mipmap)
- texture.generate_mipmap();
- }
-
- ++phase;
- return phase>3;
-}
-
} // namespace GL
} // namespace Msp
projects / libs / gl.git / blobdiff