data/art/shader.fs

   1 #version 140 // -*- mode: C++ -*-
   2
   3 // Inserted by DF:
   4 // GRID_X: Number of tiles (horizontally)
   5 // GRID_Y: Number of tiles (vertically)
   6 // DISP_X: Horizontal tile size, in pixels
   7 // DISP_Y: Vertical tile size, in pixels
   8 // DISP_X_SCR: // Horizontal tile size, in normalized device coordinates (0-1)
   9 // DISP_Y_SCR: // Vertical tile size, same
  10 // vec4[16] colors: colors.txt
  11 #line 11
  12
  13 uniform float time;     // Seconds since DF was started
  14
  15 in vec4 color_fg, color_bg;
  16 smooth in vec3 texpos;
  17
  18 // Texture array according to the tileset
  19 uniform sampler2DArray base;
  20
  21 void main() {
  22   vec4 color_tex = texture(base, texpos);
  23   gl_FragColor = mix(color_bg, color_tex * color_fg, color_tex.a);
  24 }