resources.shaders.deprecated.Particle.vert Maven / Gradle / Ivy

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#include StdLib.vert

in vec4 in_position;
in float in_size;
in float in_alpha;
out float alpha;
out vec3 lightdir;

uniform mat4 mat_m, mat_v, mat_p;
uniform vec4 light_pos;

void main() {
    gl_Position =  mat_m * in_position;
    vec4 lpos = mat_v * light_pos - gl_Position;
    lightdir = vec4(light_pos - gl_Position).xyz;

    gl_Position = mat_v * gl_Position;
    gl_PointSize = 10. * in_size / - gl_Position.z;
    alpha = in_alpha;

    gl_Position = mat_p * gl_Position;
}