#include <cmath>
-#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/ext_texture3d.h>
-#include <msp/gl/extensions/ext_texture_array.h>
-#include <msp/graphics/image.h>
#include "error.h"
#include "texture3d.h"
namespace Msp {
namespace GL {
-Texture3D::Texture3D(GLenum t):
- Texture(t),
- width(0),
- height(0),
- depth(0),
- allocated(0)
+Texture3D::Texture3D(unsigned t):
+ Texture3DBackend(t)
{ }
-Texture3D::Texture3D():
- Texture(GL_TEXTURE_3D),
- width(0),
- height(0),
- depth(0),
- allocated(0)
-{
- static Require _req(EXT_texture3D);
-}
-
void Texture3D::storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned dp, unsigned lv)
{
if(width>0)
levels = get_n_levels();
if(lv>0)
levels = min(levels, lv);
-}
-void Texture3D::allocate(unsigned level)
-{
- if(width==0 || height==0 || depth==0)
- throw invalid_operation("Texture3D::allocate");
- if(level>=levels)
- throw invalid_argument("Texture3D::allocate");
-
- bool direct = ARB_texture_storage && ARB_direct_state_access;
- if(!direct)
- {
- glActiveTexture(GL_TEXTURE0);
- glBindTexture(target, id);
- }
-
- allocate_(level);
-
- if(!direct)
- glBindTexture(target, 0);
-}
-
-void Texture3D::allocate_(unsigned level)
-{
- if(allocated&(1<<level))
- return;
-
- if(ARB_texture_storage)
- {
- GLenum fmt = get_gl_pixelformat(storage_fmt);
- if(ARB_direct_state_access)
- glTextureStorage3D(id, levels, fmt, width, height, depth);
- else
- glTexStorage3D(target, levels, fmt, width, height, depth);
- apply_swizzle();
- allocated |= (1<<levels)-1;
- }
- else
- image_(level, 0);
+ allocate();
}
void Texture3D::image(unsigned level, const void *data)
{
- if(width==0 || height==0 || depth==0)
- throw invalid_operation("Texture3D::image");
- if(level>=levels)
- throw out_of_range("Texture3D::image");
-
- if(ARB_texture_storage)
- {
- LinAl::Vector<unsigned, 3> size = get_level_size(level);
- return sub_image(level, 0, 0, 0, size.x, size.y, size.z, data);
- }
-
- glActiveTexture(GL_TEXTURE0);
- glBindTexture(target, id);
-
- image_(level, data);
-
- if(auto_gen_mipmap && level==0)
- {
- generate_mipmap_();
- allocated |= (1<<levels)-1;
- }
-
- glBindTexture(target, 0);
-}
-
-void Texture3D::image_(unsigned level, const void *data)
-{
- if(!allocated)
- {
- glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
- apply_swizzle();
- }
-
LinAl::Vector<unsigned, 3> size = get_level_size(level);
- 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));
- glTexImage3D(target, level, fmt, size.x, size.y, size.z, 0, comp, type, data);
-
- allocated |= 1<<level;
-}
-
-void Texture3D::image(unsigned level, PixelComponents comp, DataType type, const void *data)
-{
- if(comp!=get_components(format) || type!=get_component_type(format))
- throw incompatible_data("Texture3D::image");
- image(level, data);
+ return sub_image(level, 0, 0, 0, size.x, size.y, size.z, data);
}
void Texture3D::sub_image(unsigned level, int x, int y, int z, unsigned wd, unsigned ht, unsigned dp, const void *data)
if(level>=levels)
throw out_of_range("Texture3D::sub_image");
- bool direct = (ARB_direct_state_access && (ARB_texture_storage || (allocated&(1<<level))));
- if(!direct)
- {
- glActiveTexture(GL_TEXTURE0);
- glBindTexture(target, id);
- }
-
- 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)
- glTextureSubImage3D(id, level, x, y, z, wd, ht, dp, comp, type, data);
- else
- glTexSubImage3D(target, level, x, y, z, wd, ht, dp, comp, type, data);
-
- if(auto_gen_mipmap && level==0)
- generate_mipmap_();
-
- if(!direct)
- glBindTexture(target, 0);
-}
-
-void Texture3D::sub_image(unsigned level, int x, int y, int z, unsigned wd, unsigned ht, unsigned dp, PixelComponents comp, DataType type, const void *data)
-{
- if(comp!=get_components(format) || type!=get_component_type(format))
- throw incompatible_data("Texture3D::sub_image");
- sub_image(level, x, y, z, wd, ht, dp, data);
+ Texture3DBackend::sub_image(level, x, y, z, wd, ht, dp, data);
}
void Texture3D::image(const Graphics::Image &img, unsigned lv)
unsigned d = h/w;
h = w;
- PixelFormat fmt = pixelformat_from_image(img);
- storage(make_pixelformat(get_components(fmt), get_component_type(fmt), use_srgb_format), w, h, d, lv);
-
+ storage(pixelformat_from_image(img, use_srgb_format), w, h, d, lv);
image(0, img.get_pixels());
}
unsigned Texture3D::get_n_levels() const
{
unsigned s = max(width, height);
- if(target!=GL_TEXTURE_2D_ARRAY)
+ if(!is_array())
s = max(s, depth);
unsigned n = 0;
for(; s; s>>=1, ++n) ;
unsigned w = width>>level;
unsigned h = height>>level;
unsigned d = depth;
- if(target!=GL_TEXTURE_2D_ARRAY)
+ if(!is_array())
d >>= level;
if(!w && (h || d))
return LinAl::Vector<unsigned, 3>(w, h, d);
}
-UInt64 Texture3D::get_data_size() const
+uint64_t Texture3D::get_data_size() const
{
return id ? width*height*depth*get_pixel_size(storage_fmt) : 0;
}
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