Rearrange soucre files into subdirectories

[libs/gl.git] / source / core / texture1d.cpp

diff --git a/source/core/texture1d.cpp b/source/core/texture1d.cpp
new file mode 100644 (file)
index 0000000..742857b
--- /dev/null
+++ b/source/core/texture1d.cpp
@@ -0,0 +1,190 @@
+#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 "bindable.h"
+#include "error.h"
+#include "texture1d.h"
+
+using namespace std;
+
+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)
+               throw invalid_operation("Texture1D::storage");
+       if(wd==0)
+               throw invalid_argument("Texture1D::storage");
+
+       set_format(fmt);
+       width = wd;
+       levels = get_n_levels();
+       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;
+
+       if(ARB_texture_storage)
+       {
+               Conditional<BindRestore> _bind(!ARB_direct_state_access, this);
+               if(ARB_direct_state_access)
+                       glTextureStorage1D(id, levels, storage_fmt, width);
+               else
+                       glTexStorage1D(target, levels, storage_fmt, width);
+               apply_swizzle();
+               allocated |= (1<<levels)-1;
+       }
+       else
+               image(level, 0);
+}
+
+void Texture1D::image(unsigned level, const void *data)
+{
+       if(width==0)
+               throw invalid_operation("Texture1D::image");
+
+       unsigned w = get_level_size(level);
+
+       if(ARB_texture_storage)
+               return sub_image(level, 0, w, data);
+
+       BindRestore _bind(this);
+
+       if(!allocated)
+       {
+               glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
+               apply_swizzle();
+       }
+
+       PixelComponents comp = get_components(storage_fmt);
+       DataType type = get_component_type(storage_fmt);
+       glTexImage1D(target, level, storage_fmt, w, 0, comp, type, data);
+
+       allocated |= 1<<level;
+       if(auto_gen_mipmap && level==0)
+       {
+               generate_mipmap();
+               allocated |= (1<<levels)-1;
+       }
+}
+
+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);
+}
+
+void Texture1D::sub_image(unsigned level, int x, unsigned wd, const void *data)
+{
+       if(width==0)
+               throw invalid_operation("Texture3D::image");
+
+       Conditional<BindRestore> _bind(!ARB_direct_state_access, this);
+       allocate(level);
+
+       PixelComponents comp = get_components(storage_fmt);
+       DataType type = get_component_type(storage_fmt);
+       if(ARB_direct_state_access)
+               glTextureSubImage1D(id, level, x, wd, comp, type, data);
+       else
+               glTexSubImage1D(target, level, x, wd, comp, type, data);
+
+       if(auto_gen_mipmap && level==0)
+               generate_mipmap();
+}
+
+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);
+}
+
+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);
+       if(width==0)
+               storage(make_pixelformat(get_components(fmt), get_component_type(fmt), use_srgb_format), w, lv);
+       else if(w!=width)
+               throw incompatible_data("Texture1D::image");
+
+       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)
+{
+       init();
+}
+
+Texture1D::Loader::Loader(Texture1D &t, Collection &c):
+       DataFile::DerivedObjectLoader<Texture1D, Texture::Loader>(t, c)
+{
+       init();
+}
+
+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);
+}
+
+void Texture1D::Loader::storage_levels(PixelFormat fmt, unsigned w, unsigned l)
+{
+       obj.storage(fmt, w, l);
+}
+
+} // namespace GL
+} // namespace Msp