From 6bcea67ac5a1f46dc145aac8adabd2e9e0d733eb Mon Sep 17 00:00:00 2001 From: Sam Anthony Date: Sat, 26 Oct 2024 22:20:03 -0400 Subject: multiple balls --- balls.cl | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) (limited to 'balls.cl') diff --git a/balls.cl b/balls.cl index 88666e9..bb1755d 100644 --- a/balls.cl +++ b/balls.cl @@ -1,17 +1,19 @@ #define RADIUS 0.15f __kernel void -balls(__global float2 *position, __global float2 *vertices) { - size_t id, nsegs; +balls(__global float2 *positions, __global float2 *vertices) { + size_t ball, nsegs; + float2 center; float theta; - /* Center of circle. */ - vertices[0].x = position[0].x; - vertices[0].y = position[0].y; + ball = get_group_id(0); + center = positions[ball]; - id = get_global_id(0); - nsegs = get_global_size(0)-1; - theta = 2.0f * M_PI_F * id / nsegs; - vertices[id+1].x = position[0].x + RADIUS * cos(theta); - vertices[id+1].y = position[0].y + RADIUS * sin(theta); + nsegs = get_local_size(0)-2; /* Number of edge segments. */ + theta = 2.0f * M_PI_F * get_local_id(0) / nsegs; + + vertices[get_global_id(0)].x = center.x + RADIUS * cos(theta); + vertices[get_global_id(0)].y = center.y + RADIUS * sin(theta); + + vertices[ball*get_local_size(0)] = center; } -- cgit v1.2.3