31 lines
758 B
GLSL
31 lines
758 B
GLSL
const int SHADOW_VSM = 0;
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const int SHADOW_CSM = 1;
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uniform int shadow_technique;
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#include "model_fs.glsl"
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#include "surface.glsl"
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void main() {
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vec4 diffuse = get_diffuse_map();
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diffuse.a *= u_global_alpha*u_global_opacity;
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if (diffuse.a < 0.1)
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discard;
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if (shadow_technique == SHADOW_VSM) {
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float depth = length(v_position) / 200;
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float moment1 = depth;
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float moment2 = depth * depth;
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float dx = dFdx(depth);
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float dy = dFdy(depth);
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moment2 += 0.25*(dx*dx+dy*dy);
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fragcolor = vec4( moment1, moment2, /* diffuse.a */ 0.0, 1.0);
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}
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else if (shadow_technique == SHADOW_CSM) {
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fragcolor = vec4(gl_FragCoord.z, /* diffuse.a */ 0.0, 0.0, 1.0);
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}
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}
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