infinite_spheres.cl

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#ifndef BENCHMARK
 
#define CAMERA_POSITIONS_LENGTH 1
#define CAMERA_POSITIONS_ARRAY { (float4)(0, 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 CAMERA_SPEED 10.0f
 
#endif
 
#define MAXIMUM_MARCH_STEPS 200
#define MAXIMUM_MARCH_DISTANCE 1000.0f
#define SCENE_BACKGROUND_COLOUR (float3)(0.1f, 0.1f, 0.1f)
#define CAMERA_FOCUS_DISTANCE 0.1f
#define SCENE_GLOW_COLOUR (float3)(0.8f, 0.8f, 0.8f)
#define SCENE_MAX_GLOW_DISTANCE 1.05f
 
#define SCALE 0.05f
#define TIME_SCALE 0.33f
#define REPETITION (float3)(10.0f, 10.0f, 10.0f)
#define REPETITION_HALF REPETITION / 2
 
 
#include "simplexnoise1234.cl"
 
#include "types.cl"
#include "sdf.cl"
 
 
Light getLight(float time)
{
    Light light;
    light.ambient = (float3)(0.2f, 0.2f, 0.2f);
    light.diffuse = (float3)(0.5f, 0.5f, 0.5f);
    light.specular = (float3)(1.0f, 1.0f, 1.0f);
    light.position = (float3)(500, 500, 500);
    return light;
}
 
Material getMaterial(float3 position, float time)
{
    // Calculate a point to sample the noise from, based on position and time
    const float3 samplePoint = position * SCALE + time * TIME_SCALE;
    // Calculate colour, range -1 to 1 for x, y, and z
    float3 colour = (float3)(snoise1(samplePoint.x) + 1, snoise1(samplePoint.y) + 1, snoise1(samplePoint.z) + 1);
 
    // Material
    Material material;
    // Divide colour by 2 so that it is in the range 0 to 1
    material.ambient = colour / 2.0f;
    material.diffuse = material.ambient;
    material.specular = (float3)(0.5f, 0.5f, 0.5f);
    material.shininess = 25.0f;
    return material;
}
 
float DE(float3 position, float time)
{
    // Transform the position in space
    const float3 transformed_position = fmod(position + REPETITION_HALF, REPETITION) - REPETITION_HALF;
    // Calculate the distance to the transformed sphere
    return sphereSDF(transformed_position, (float3)(0, 0, 0), 1.0f);
}
 
#include "main.cl"