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+ 🌌 Real-Time GPU Raytracing Engine
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+ ## 1. Introduction ### 🎯 Project Description & Purpose @@ -133,16 +150,16 @@ void main() { ### 🔷 Supported Primitives Our RT comes with a variety of built‑in geometric primitives, each traced mathematically in the compute shader: -| Primitive | Description & Notes | Preview | -| ---------- | --------------------------------------------------------- | ----------------------------------- | -| **Cube** | Axis‑aligned cube. | `` | -| **Cylinder** | Finite cylinder with end caps; parameterized by radius, height and rotation. | `` | -| **Plane** | Infinite plane defined by a point & normal. | `` | -| **Portal** | Any paired "windows" implementing non‑Euclidean teleportation. See "Advanced Features" below. | `` | -| **Quad** | Rectangular object useful for billboards or area lights. | `` | -| **Sphere** | Round object useful for sphere light. | `` | -| **SpotLight** | Directional point with cone angle, used for volumetric scattering. | `` | -| **Triangle** | Single triangle, primitive building block for custom meshes and SAH‑BVH traversal. | `` | +| Primitive | Description & Notes | +| ---------- | --------------------------------------------------------- | +| **Cube** | Axis‑aligned cube. | +| **Cylinder** | Finite cylinder with end caps; parameterized by radius, height and rotation. | +| **Plane** | Infinite plane defined by a point & normal. | +| **Portal** | Any paired "windows" implementing non‑Euclidean teleportation. See "Advanced Features" below. | +| **Quad** | Rectangular object useful for billboards or area lights. | +| **Sphere** | Round object useful for sphere light. | +| **SpotLight** | Directional point with cone angle, used for volumetric scattering. | +| **Triangle** | Single triangle, primitive building block for custom meshes and SAH‑BVH traversal. | > 📌 *Each primitive stores its own transform (position, rotation, scale) and material index; the compute shader branches on `obj.type` for intersection tests.* @@ -156,8 +173,8 @@ Materials in RT are defined by a compact struct in C++ and mirrored in GLSL for typedef struct s_Material { glm::vec3 color; // Base albedo float emission; // Emissive strength - float roughness; // [0=mirror … 1=matte] - float metallic; // [0=dielectric … 1=metal] + float roughness; // [1=mirror … 0=diffuse] + float metallic; // [probability of reflecting] float refraction; // IOR for transmissive materials int type; // 0=Lambert,1=Dielectric,2=Transparent,3=Checker... int texture_index; // Albedo texture lookup @@ -227,6 +244,12 @@ Our RT uses [stb_image](https://github.com/nothings/stb/tree/master) to load 2D ### 🌌 Non‑Euclidean Portals Portals link two planes in space, allowing rays (and the camera) to teleport seamlessly. +