Program Listing for File SceneUBO.hpp

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// this little "hack" is needed for using it on the
// CPU side as well for the GPU side :)
// inspired by the NVDIDIA tutorial:
// https://nvpro-samples.github.io/vk_raytracing_tutorial_KHR/

#ifdef __cplusplus
#pragma once
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include <glm/vec2.hpp>
#include <glm/vec3.hpp>
#include <glm/vec4.hpp>
// GLSL Type
using vec2 = glm::vec2;
using vec3 = glm::vec3;
using vec4 = glm::vec4;
using mat4 = glm::mat4;
using uint = unsigned int;
namespace Kataglyphis::VulkanRendererInternals {
#endif

#define MAX_POINT_LIGHTS 4
#define MAX_CASCADES 3

struct DirectionalLightData {
    vec4 direction;
    vec4 color; // w = radiance
};

struct PointLightData {
    vec4 position;
    vec4 color; // w = radiance
    vec4 attenuation; // x: constant, y: linear, z: exponent, w: far_plane
};

struct SceneUBO
{
    // Directional light
    DirectionalLightData dirLight;

    // Point lights
    PointLightData pointLights[MAX_POINT_LIGHTS];
    uint numPointLights;

    // padding for alignment (std140)
    uint pcfRadius;
    float cascadedShadowIntensity;
    uint padding2;

    // Cascaded shadow maps
    vec4 cascadeSplits; // up to 4 cascades
    mat4 cascadeLightSpaceMatrices[MAX_CASCADES];

    // Camera
    vec4 view_dir;
    // xyz is position; w = fov
    vec4 cam_pos;

    // Clouds
    vec4 cloudMovementDirection; // w = speed
    vec4 cloudMeshScale; // w = cloudScale
    vec4 cloudMeshOffset; // w = cloudDensity
    vec4 cloudParameters; // x = pillowness, y = cirrus_effect, z = powder_effect, w = numMarchSteps
};
#ifdef __cplusplus
}// namespace Kataglyphis::VulkanRendererInternals
#endif