quakeforge/libs/video/renderer/vulkan/shader/particle.frag
Bill Currie 30b38d7f3f [vulkan] Implement particle rendering
They sort of kind of maybe try to work, but there's plenty wrong. I
suspect synchronization and probably other factors.
2022-11-28 10:21:20 +09:00

20 lines
320 B
GLSL

#version 450
layout (location = 0) in vec4 uv_tr;
layout (location = 1) in vec4 color;
layout (location = 0) out vec4 frag_color;
void
main (void)
{
vec4 c = vec4 (1,1,1,1);//color;
vec2 x = uv_tr.xy;
float a = 1 - dot (x, x);
if (a <= 0) {
discard;
}
c.a *= sqrt (a);
frag_color = c;
}