pleascach/assets/shaders/explode.geom
2024-01-31 16:44:45 -05:00

44 lines
913 B
GLSL

#version 450 core
layout (triangles) in;
layout (triangle_strip) out;
layout (max_vertices = 3) out;
layout (location = 0) in vec3 norm[];
layout (location = 1) in vec2 texCoord[];
layout (location = 0) out vec3 _norm;
layout (location = 1) out vec2 _texCoord;
layout (set = 0, binding = 0) uniform Matrices {
mat4 mvp;
float time;
};
vec4 explode(vec4 pos, vec3 n) {
float mag = 2.0;
vec3 dir = n * (time-3.0)/10.0 * mag;
return pos + vec4(dir, 0.0);
}
void main(void) {
if (time < 3.0) {
for(int i = 0; i < gl_in.length(); i++) {
gl_Position = mvp * gl_in[i].gl_Position;
_norm = norm[i];
_texCoord = texCoord[i];
EmitVertex();
}
EndPrimitive();
return;
}
vec3 n = norm[0] + norm[1] + norm[2];
n/=3;
for(int i = 0; i < gl_in.length(); i++) {
gl_Position = mvp * explode(gl_in[i].gl_Position, n);
_texCoord = texCoord[i];
_norm = n;
EmitVertex();
}
EndPrimitive();
}