mitchellhansen/voxel-raycaster
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Various tweaks and modifications

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Some preliminary testing of map
This commit is contained in:
MitchellHansen
2016-12-10 01:12:30 -08:00
parent c98adefa3a
commit 51a08fc0bb
11 changed files with 296 additions and 48 deletions
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28
kernels/ray_caster_kernel.cl
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@@ -75,6 +75,17 @@ float4 cast_light_rays(
// if it does
}
int rand(int* seed) // 1 <= *seed < m
{
int const a = 16807; //ie 7**5
int const m = 2147483647; //ie 2**31-1
*seed = ((*seed) * a) % m;
return(*seed);
}
__kernel void raycaster(
global char* map,
global int3* map_dim,
@@ -85,9 +96,17 @@ __kernel void raycaster(
global float* lights,
global int* light_count,
__write_only image2d_t image,
global int* seed
global int* seed_memory
){
int global_id = get_global_id(1) * get_global_size(0) + get_global_id(0);
int seed = seed_memory[global_id];
int random_number = rand(&seed);
seed_memory[global_id] = seed;
size_t id = get_global_id(0);
int2 pixel = {id % (*resolution).x, id / (*resolution).x};
float3 ray_dir = projection_matrix[pixel.x + (*resolution).x * pixel.y];
@@ -139,19 +158,18 @@ __kernel void raycaster(
}
// use a ghetto ass rng to give rays a "fog" appearance
int2 randoms = { seed, ray_dir.y };
int2 randoms = { random_number, 14 };
uint tseed = randoms.x + id;
uint t = tseed ^ (tseed << 11);
uint result = randoms.y ^ (randoms.y >> 19) ^ (t ^ (t >> 8));
*seed = result % 50;
int max_dist = 800 + result % 100;
int dist = 0;
int3 mask = { 0, 0, 0 };
float4 color = { 0.73, 0.81, 0.89, 0.6 };
float4 c = (float4)(0.40, 0.00, 0.40, 0.2);
c.x += ray_dir.y;// (result % 100) / 100;
float4 c = (float4)(0.60, 0.00, 0.40, 0.1);
c.x += (result % 100) / 10;
// Andrew Woo's raycasting algo
do {