mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-12-11 13:21:10 +00:00
db6c76d583
At least for now, it is more trouble than it is worth as it (or my implementation of it) breaks lavapipe and renderdoc.
52 lines
1.2 KiB
GLSL
52 lines
1.2 KiB
GLSL
#version 450
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layout (set = 1, binding = 0) uniform sampler2DArray Texture;
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layout (push_constant) uniform PushConstants {
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layout (offset = 64)
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vec4 fog;
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float time;
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};
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layout (location = 0) in vec4 tl_st;
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layout (location = 1) in vec3 direction;
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layout (location = 0) out vec4 frag_color;
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const float PI = 3.14159265;
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const float SPEED = 20.0;
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const float CYCLE = 128.0;
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const float FACTOR = PI * 2.0 / CYCLE;
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const vec2 BIAS = vec2 (1.0, 1.0);
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const float SCALE = 8.0;
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vec2
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warp_st (vec2 st, float time)
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{
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vec2 angle = st.ts * CYCLE / 2.0;
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vec2 phase = vec2 (time, time) * SPEED;
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return st + (sin ((angle + phase) * FACTOR) + BIAS) / SCALE;
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}
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vec4
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fogBlend (vec4 color)
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{
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float az = fog.a * gl_FragCoord.z / gl_FragCoord.w;
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vec3 fog_color = fog.rgb;
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float fog_factor = exp (-az * az);
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return vec4 (mix (fog_color.rgb, color.rgb, fog_factor), color.a);
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}
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void
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main (void)
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{
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vec4 c = vec4 (0);
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vec4 e;
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vec3 t_st = vec3 (warp_st (tl_st.xy, time), 0);
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vec3 e_st = vec3 (warp_st (tl_st.xy, time), 1);
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c = texture (Texture, t_st);
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e = texture (Texture, e_st);
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frag_color = c + e;//fogBlend (c);
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}
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