sphere_box.cl

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#define CAMERA_POSITIONS_LENGTH 1
#define CAMERA_POSITIONS_ARRAY { (float4)(10, -10, -10, 0) }
 
#define CAMERA_FACING_DIRECTIONS_LENGTH 1
#define CAMERA_FACING_DIRECTIONS_ARRAY { (float4)(normalise((float3)(-10, -10, -10)), 0.0f) }
 
#define SCENE_BACKGROUND_COLOUR (float3)(0.78f, 0.78f, 0.73f)
 
#define SURFACE_INTERSECTION_EPSILON 0.00001f
#define MAXIMUM_MARCH_STEPS 200
#define MAXIMUM_MARCH_DISTANCE 50.0f
 
//#define DO_SOFT_SHADOWS true
#define DO_HARD_SHADOWS true
 
#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)(25, -25, 25);
 
    return light;
}
 
Material getMaterial(float3 position, float time)
{
    // Material
    Material material;
    material.ambient = (float3)(0.92f, 0.30f, 0.16f);
    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)
{
    float offset = -sin(time * 0.5f) * 1.0f;
 
    float distance = opSmoothUnion(
        sphereSDF(position, (float3)(0.0f, offset, 0.0f), 3.5f),
        boxSDF(position, (float3)(0.0f, offset, 0.0f), (float3)(4.0f, 0.5f, 4.0f)),
        (-sin(time * 0.5f) + 1.0f) * 1.5f
    );
 
    return distance;
}
 
#include "main.cl"