-#include <msp/core/raii.h>
-#include <msp/gl/extensions/arb_direct_state_access.h>
-#include <msp/gl/extensions/arb_texture_storage.h>
-#include <msp/gl/extensions/msp_texture1d.h>
#include "error.h"
#include "texture1d.h"
namespace Msp {
namespace GL {
-Texture1D::Texture1D():
- Texture(GL_TEXTURE_1D),
- width(0),
- allocated(0)
-{
- static Require _req(MSP_texture1D);
-}
-
void Texture1D::storage(PixelFormat fmt, unsigned wd, unsigned lv)
{
if(width>0)
{
- if(fmt!=format || wd!=width || (lv && lv!=levels))
+ if(fmt!=format || wd!=width || (lv && lv!=n_levels))
throw incompatible_data("Texture1D::storage");
return;
}
set_format(fmt);
width = wd;
- levels = get_n_levels();
+ n_levels = count_levels(width);
if(lv)
- levels = min(levels, lv);
-}
-
-void Texture1D::allocate(unsigned level)
-{
- if(width==0)
- throw invalid_operation("Texture1D::allocate");
- if(level>=levels)
- throw invalid_argument("Texture1D::allocate");
- if(allocated&(1<<level))
- return;
+ n_levels = min(n_levels, lv);
- if(ARB_texture_storage)
- {
- GLenum fmt = get_gl_pixelformat(storage_fmt);
- if(ARB_direct_state_access)
- glTextureStorage1D(id, levels, fmt, width);
- else
- {
- bind_scratch();
- glTexStorage1D(target, levels, fmt, width);
- }
- apply_swizzle();
- allocated |= (1<<levels)-1;
- }
- else
- image(level, 0);
+ allocate();
}
void Texture1D::image(unsigned level, const void *data)
{
- if(width==0)
- throw invalid_operation("Texture1D::image");
- if(level>=levels)
- throw out_of_range("Texture1D::image");
-
- if(ARB_texture_storage)
- return sub_image(level, 0, get_level_size(level), 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));
- glTexImage1D(target, level, fmt, get_level_size(level), 0, comp, type, data);
-
- allocated |= 1<<level;
-}
-
-void Texture1D::image(unsigned level, PixelComponents comp, DataType type, const void *data)
-{
- if(comp!=get_components(format) || type!=get_component_type(format))
- throw incompatible_data("Texture1D::image");
- image(level, data);
+ return sub_image(level, 0, get_level_size(level), data);
}
-void Texture1D::sub_image(unsigned level, int x, unsigned wd, const void *data)
+void Texture1D::sub_image(unsigned level, unsigned x, unsigned wd, const void *data)
{
if(width==0)
throw invalid_operation("Texture1D::sub_image");
- if(level>=levels)
+ if(level>=n_levels || x>width || x+wd>width)
throw out_of_range("Texture1D::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)
- glTextureSubImage1D(id, level, x, wd, comp, type, data);
- else
- {
- bind_scratch();
- glTexSubImage1D(target, level, x, wd, comp, type, data);
- }
-}
-
-void Texture1D::sub_image(unsigned level, int x, unsigned wd, PixelComponents comp, DataType type, const void *data)
-{
- if(comp!=get_components(format) || type!=get_component_type(format))
- throw incompatible_data("Texture1D::sub_image");
- sub_image(level, x, wd, data);
+ Texture1DBackend::sub_image(level, x, wd, data);
}
void Texture1D::image(const Graphics::Image &img, unsigned lv)
if(img.get_height()!=1)
throw incompatible_data("Texture1D::image");
- unsigned w = img.get_width();
- PixelFormat fmt = pixelformat_from_image(img);
- storage(make_pixelformat(get_components(fmt), get_component_type(fmt), use_srgb_format), w, lv);
-
+ storage(pixelformat_from_image(img, use_srgb_format), img.get_width(), lv);
image(0, img.get_pixels());
}
-unsigned Texture1D::get_n_levels() const
-{
- unsigned n = 0;
- for(unsigned s=width; s; s>>=1, ++n) ;
- return n;
-}
-
unsigned Texture1D::get_level_size(unsigned level) const
{
return width>>level;
}
-UInt64 Texture1D::get_data_size() const
-{
- return id ? width*get_pixel_size(storage_fmt) : 0;
-}
-
Texture1D::Loader::Loader(Texture1D &t):
DataFile::DerivedObjectLoader<Texture1D, Texture::Loader>(t)
void Texture1D::Loader::init()
{
- add("raw_data", &Loader::raw_data);
add("storage", &Loader::storage);
add("storage", &Loader::storage_levels);
}
-void Texture1D::Loader::raw_data(const string &data)
-{
- obj.image(0, data.data());
-}
-
void Texture1D::Loader::storage(PixelFormat fmt, unsigned w)
{
obj.storage(fmt, w);