sierpinski_collection.cl

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#ifndef BENCHMARK
 
#define CAMERA_POSITIONS_LENGTH 1
#define CAMERA_POSITIONS_ARRAY {  (float4)(10, 0, 0, 0)}
#define CAMERA_FACING_DIRECTIONS_LENGTH 1
#define CAMERA_FACING_DIRECTIONS_ARRAY { (float4)(normalise((float3)(1, 0, 0)), 0) }
#define FORCE_FREE_CAMERA true
 
//#define DO_BOUNDING_VOLUME_OPTIMISATION true
//#define DO_SOFT_SHADOWS true
//#define DO_HARD_SHADOWS true
 
//#define DO_GEOMETRY_GLOW true
 
#endif
 
#define MAXIMUM_MARCH_STEPS 300
#define MAXIMUM_MARCH_DISTANCE 100.0f
#define SURFACE_INTERSECTION_EPSILON 0.0001f
#define CAMERA_SPEED 1.0f
#define SCENE_BACKGROUND_COLOUR (float3)(1.0f, 0.5f, 0.3f)
#define SCENE_GLOW_COLOUR (float3)(0.8f, 0.8f, 0.8f)
#define SCENE_MAX_GLOW_DISTANCE 0.1f
#define CAMERA_FOCUS_DISTANCE 0.1f
#define SURFACE_SHADOW_FALLOFF 5.0f
 
#include "types.cl"
#include "sdf.cl"
#include "sierpinski.cl"
 
Light getLight(float time)
{
    Light light;
    light.ambient = (float3)(0.1f, 0.1f, 0.1f);
    light.diffuse = (float3)(0.5f, 0.5f, 0.5f);
    light.specular = (float3)(1.0f, 1.0f, 1.0f);
    light.position = (float3)(5, -5, 5);
 
    return light;
}
 
Material SDF(const float3 position, const float time, float* distance)
{
    float cubeDistance = 0.0f;
    float tetrahedronDistance = 0.0f;
 
    Material cube = sierpinskiCubeSDF((float3)(1, 1, 1) - position, 7, &cubeDistance);
    Material tetrahedron = sierpinskiTetrahedronSDF((float3)(-5, 0, 0) - position, 12, 100000000, &tetrahedronDistance);
 
    if (cubeDistance < tetrahedronDistance)
    {
        *distance = cubeDistance;
        return cube;
    }
    else
    {
        *distance = tetrahedronDistance;
        return tetrahedron;
    }
}
 
Material getMaterial(float3 position, float time)
{
    float distance;
    return SDF(position, time, &distance);
}
 
float boundingVolumeDE(float3 position, float time)
{
    return min(boxSDF(position, (float3)(0, 0, 0), 1.0f), sphereSDF(position, (float3)(-5, 0, 0), 1.75f));
}
 
float DE(float3 position, float time)
{
    float distance;
    SDF(position, time, &distance);
    return distance;
}
 
#include "main.cl"