source/core/texture2darray.cpp

   1 #include <msp/gl/extensions/ext_texture_array.h>
   2 #include "error.h"
   3 #include "texture2darray.h"
   4
   5 using namespace std;
   6
   7 namespace Msp {
   8 namespace GL {
   9
  10 Texture2DArray::Texture2DArray():
  11         Texture3D(GL_TEXTURE_2D_ARRAY)
  12 {
  13         static Require _req(EXT_texture_array);
  14 }
  15
  16 void Texture2DArray::layer_image(unsigned level, unsigned z, const void *data)
  17 {
  18         if(level>=levels || z>=depth)
  19                 throw out_of_range("Texture2DArray::layer_image");
  20
  21         LinAl::Vector<unsigned, 3> size = get_level_size(level);
  22         sub_image(level, 0, 0, z, size.x, size.y, 1, data);
  23 }
  24
  25 void Texture2DArray::layer_image(unsigned level, unsigned z, const Graphics::Image &img)
  26 {
  27         if(!get_width())
  28                 throw invalid_operation("Texture2DArray::layer_image");
  29
  30         unsigned w = img.get_width();
  31         unsigned h = img.get_height();
  32         if(w!=get_width() || h!=get_height())
  33                 throw incompatible_data("Texture2DArray::layer_image");
  34         PixelFormat fmt = pixelformat_from_image(img);
  35         if(get_components(fmt)!=get_components(format) || get_component_type(fmt)!=get_component_type(format))
  36                 throw incompatible_data("Texture2DArray::layer_image");
  37
  38         layer_image(level, z, img.get_pixels());
  39 }
  40
  41
  42 Texture2DArray::Loader::Loader(Texture2DArray &t):
  43         DataFile::DerivedObjectLoader<Texture2DArray, Texture3D::Loader>(t)
  44 {
  45         init();
  46 }
  47
  48 Texture2DArray::Loader::Loader(Texture2DArray &t, Collection &c):
  49         DataFile::DerivedObjectLoader<Texture2DArray, Texture3D::Loader>(t, c)
  50 {
  51         init();
  52 }
  53
  54 void Texture2DArray::Loader::init()
  55 {
  56         add("external_image", &Loader::external_image);
  57 }
  58
  59 void Texture2DArray::Loader::external_image(unsigned z, const string &fn)
  60 {
  61         Graphics::Image img;
  62         load_external_image(img, fn);
  63         obj.layer_image(0, z, img);
  64 }
  65
  66 } // namespace GL
  67 } // namespace Msp