adding fast blur function

[dosdemo] / src / greets.c

diff --git a/src/greets.c b/src/greets.c
index 0876b60..9fa14df 100644 (file)
--- a/src/greets.c
+++ b/src/greets.c
@@ -30,7 +30,7 @@ struct vec3 {
 struct particle {
        float x, y, z;
        float vx, vy, vz;       /* velocity */
-       float r, g, b;
+       int r, g, b;
        float life;
 };
 
@@ -203,7 +203,9 @@ int init_emitter(struct emitter *em, int num, unsigned char *map, int xsz, int y
                p->x = (float)x / (float)xsz - 0.5;
                p->y = -(float)y / (float)xsz + 0.5 / aspect;
                p->z = ((float)i / (float)num * 2.0 - 1.0) * 0.005;
-               p->r = p->g = p->b = 0.9;
+               p->r = 0;
+               p->g = 0x1f;
+               p->b = 255;
                p->vx = p->vy = p->vz = 0.0f;
                p->life = MAX_LIFE;
                ++p;
@@ -233,7 +235,9 @@ void update_particles(struct emitter *em, float dt)
                v->y = p->y;
                v->z = p->z;
                v->w = 1.0f;
-               v->r = v->g = v->b = 200;
+               v->r = p->r;
+               v->g = p->g;
+               v->b = p->b;
                v->a = cround64(p->life * 255.0 / MAX_LIFE);
                ++v;