modules/RenderEngine/src/textures.lua

   1 function RenderEngine:init_texture_args()
   2         local base_filter = (self.bilinear_filter and "linear" or "nearest")
   3         local mipmap = (self.mipmap and " mipmap nearest" or "")
   4         self.texture_min_filter = base_filter .. mipmap
   5         self.texture_mag_filter = base_filter
   6 end
   7
   8 function RenderEngine:create_texture(path)
   9         local texture = gl.gen_textures(1)
  10
  11         gl.bind_texture("2d", texture)
  12         gl.texture_parameter("2d", "min filter", self.texture_min_filter)
  13         gl.texture_parameter("2d", "mag filter", self.texture_mag_filter)
  14         gl.texture_parameter("2d", "wrap s", "repeat")
  15         gl.texture_parameter("2d", "wrap t", "repeat")
  16
  17         local data, width, height, channels = image.load(path)
  18
  19         if not data then
  20                 error("Failed to load texture '" .. path .. "'")
  21         end
  22
  23         gl.texture_image("2d", 0, "rgb", "rgba", "ubyte", data, width, height)
  24         if self.mipmap then
  25                 gl.generate_mipmap("2d")
  26         end
  27
  28         gl.unbind_texture("2d")
  29         data, width, height, channels = nil
  30
  31         return texture
  32 end