hello_world.cl

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#include "utils.cl"
#include "types.cl"
#include "sdf.cl"
 
#define CAMERA_POSITIONS_LENGTH 1
#define CAMERA_POSITIONS_ARRAY { (float4)(5, 0, 0, 0) }
 
#define CAMERA_FACING_DIRECTIONS_LENGTH 1
#define CAMERA_FACING_DIRECTIONS_ARRAY { (float4)(normalise((float3)(-1, 0, 0)), 0) }
 
#define CAMERA_SPEED 2.5f
 
#define SCENE_BACKGROUND_COLOUR (float3)(0.1f, 0.1f, 0.1f)
#define DO_SOFT_SHADOWS true
 
#define MAXIMUM_MARCH_STEPS 100
#define MAXIMUM_MARCH_DISTANCE 50.0f
 
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)(0.0, -4, -4);
 
    return light;
}
 
Material SDF(const float3 position, const float time, float* distance)
{
    // Distance estimation
    *distance = sphereSDF(position, (float3)(0, 0, 0), 1.0f);
 
    // Material
    Material material;
    material.ambient = (float3)(0.75f, 0.25f, 0.5f);
    material.diffuse = material.ambient;
    material.specular = (float3)(0.5f, 0.5f, 0.5f);
    material.shininess = 25.0f;
 
    return material;
}
 
Material getMaterial(float3 position, float time)
{
    float distance;
    return SDF(position, time, &distance);
}
 
float DE(float3 position, float time)
{
    float distance;
    SDF(position, time, &distance);
    return distance;
}
 
#include "main.cl"