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SuperTuxKart 1.5 upstream source (from official release tarball)

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Benjamin
2026-06-11 20:04:02 +02:00
commit 2957e51aaa
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data/shaders/dof.frag
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uniform sampler2D tex;
uniform sampler2D dtex;
out vec4 FragColor;
float focalDepth = 10.;
float maxblur = 1.;
float range = 100.;
void main()
{
vec2 uv = gl_FragCoord.xy / u_screen;
float curdepth = texture(dtex, uv).x;
vec4 FragPos = u_inverse_projection_matrix * (2.0 * vec4(uv, curdepth, 1.0) - 1.0);
FragPos /= FragPos.w;
float depth = FragPos.z;
float blur = clamp(abs(depth - focalDepth) / range, -maxblur, maxblur);
vec2 offset = 10. / u_screen;
vec4 col = texture(tex, uv);
vec4 colOriginal = col;
// Weight from here http://artmartinsh.blogspot.fr/2010/02/glsl-lens-blur-filter-with-bokeh.html
col += texture(tex, uv + (vec2(0.0, 0.4) * offset) * blur);
col += texture(tex, uv + (vec2(0.15, 0.37) * offset) * blur);
col += texture(tex, uv + (vec2(0.29,0.29) * offset) * blur);
col += texture(tex, uv + (vec2(-0.37,0.15) * offset) * blur);
col += texture(tex, uv + (vec2(0.4, 0.0) * offset) * blur);
col += texture(tex, uv + (vec2(0.37, -0.15) * offset) * blur);
col += texture(tex, uv + (vec2(0.29, -0.29) * offset) * blur);
col += texture(tex, uv + (vec2(-0.15, -0.37) * offset) * blur);
col += texture(tex, uv + (vec2(0.0, -0.4) * offset) * blur);
col += texture(tex, uv + (vec2(-0.15, 0.37) * offset) * blur);
col += texture(tex, uv + (vec2(-0.29, 0.29) * offset) * blur);
col += texture(tex, uv + (vec2(0.37, 0.15) * offset) * blur);
col += texture(tex, uv + (vec2(-0.4, 0.0) * offset) * blur);
col += texture(tex, uv + (vec2(-0.37, -0.15) * offset) * blur);
col += texture(tex, uv + (vec2(-0.29, -0.29) * offset) * blur);
col += texture(tex, uv + (vec2(0.15, -0.37) * offset) * blur);
col += texture(tex, uv + (vec2(0.15, 0.37) * offset) * blur * 0.9);
col += texture(tex, uv + (vec2(-0.37, 0.15) * offset) * blur * 0.9);
col += texture(tex, uv + (vec2(0.37, -0.15) * offset) * blur * 0.9);
col += texture(tex, uv + (vec2(-0.15, -0.37) * offset) * blur * 0.9);
col += texture(tex, uv + (vec2(-0.15, 0.37) * offset) * blur * 0.9);
col += texture(tex, uv + (vec2(0.37, 0.15) * offset) * blur * 0.9);
col += texture(tex, uv + (vec2(-0.37, -0.15) * offset) * blur * 0.9);
col += texture(tex, uv + (vec2(0.15, -0.37) * offset) * blur * 0.9);
col += texture(tex, uv + (vec2(0.29, 0.29) * offset) * blur * 0.7);
col += texture(tex, uv + (vec2(0.4, 0.0) * offset) * blur * 0.7);
col += texture(tex, uv + (vec2(0.29, -0.29) * offset) * blur * 0.7);
col += texture(tex, uv + (vec2(0.0, -0.4) * offset) * blur * 0.7);
col += texture(tex, uv + (vec2(-0.29, 0.29) * offset) * blur * 0.7);
col += texture(tex, uv + (vec2(-0.4, 0.0) * offset) * blur * 0.7);
col += texture(tex, uv + (vec2(-0.29, -0.29) * offset) * blur * 0.7);
col += texture(tex, uv + (vec2(0.0, 0.4) * offset) * blur *0.7);
col += texture(tex, uv + (vec2(0.29, 0.29) * offset) * blur * 0.4);
col += texture(tex, uv + (vec2(0.4, 0.0) * offset) * blur * 0.4);
col += texture(tex, uv + (vec2(0.29, -0.29) * offset) * blur * 0.4);
col += texture(tex, uv + (vec2(0.0, -0.4) * offset) * blur * 0.4);
col += texture(tex, uv + (vec2(-0.29, 0.29) * offset) * blur * 0.4);
col += texture(tex, uv + (vec2(-0.4, 0.0) * offset) * blur * 0.4);
col += texture(tex, uv + (vec2(-0.29, -0.29) * offset) * blur * 0.4);
col += texture(tex, uv + (vec2(0.0, 0.4) * offset) * blur * 0.4);
col = vec4(col.rgb / 41.0, col.a);
depth = clamp(max(1.1666 - (FragPos.z/240.0), FragPos.z - 2000.0), 0., 1.);
vec3 final = colOriginal.rgb * depth + col.rgb * (1. - depth);
FragColor = vec4(final, colOriginal.a);
}