source/backends/opengl/texture2darray_backend.cpp

   1 #include <msp/gl/extensions/ext_texture_array.h>
   2 #include "texture2darray_backend.h"
   3
   4 namespace Msp {
   5 namespace GL {
   6
   7 OpenGLTexture2DArray::OpenGLTexture2DArray():
   8         Texture3D(GL_TEXTURE_2D_ARRAY)
   9 {
  10         static Require _req(EXT_texture_array);
  11 }
  12
  13 size_t OpenGLTexture2DArray::get_data_size() const
  14 {
  15         if(!id)
  16                 return 0;
  17
  18         size_t level_size = width*height*get_pixel_size(format);
  19         size_t total_size = level_size;
  20         for(unsigned i=0; i<levels; ++i, level_size>>=2)
  21                 total_size += level_size*depth;
  22         return total_size;
  23 }
  24
  25 } // namespace GL
  26 } // namespace Msp