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35 lines
1.0 KiB
Plaintext
35 lines
1.0 KiB
Plaintext
#version 460 core
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#define STAGE_COMPUTE 1
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// the water on the windscreens (water_sim.glsl): the blades going over the wetted paths in the step wipe them. a thread per texel
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// of the map of the paths, a row of groups per glass
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#include "common.glsl"
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#include "water_sim.glsl"
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layout(local_size_x = WATER_GROUP_SIZE) in;
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void main()
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{
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uint slot = gl_WorkGroupID.y;
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uint texel = gl_GlobalInvocationID.x;
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if ((water_slots[slot].z < 0.5) || (texel >= uint(WATER_TRAIL * WATER_TRAIL)))
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return;
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uint index = water_trail_base(slot) + texel;
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if (water_cells[index] == 0u)
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return;
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vec2 uv = (vec2(float(texel % uint(WATER_TRAIL)), float(texel / uint(WATER_TRAIL))) + 0.5) / float(WATER_TRAIL);
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vec4 mask = water_blades_at(slot, uv);
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for (int k = 0; k < 4; ++k)
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{
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float before = water_blades_before[k];
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float now = water_blades_now[k];
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if ((mask[k] < 0.001) || (before < 0.0) || (now < 0.0) || (before == now))
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continue;
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if ((mask[k] > min(before, now)) && (mask[k] <= max(before, now)))
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{
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water_cells[index] = 0u;
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return;
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}
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}
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}
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