Portfolio: Cradle Engine

Cradle Engine 2 (Dec 2014 - )

Author : Metin Arıca
Language : C++
Graphic API : OpenGL
Shader : GLSL

After 4 years of break, I decided to remake my engine as a spare time project. I will add next-gen features also reimplement all the features of previous version.

Work in Progress

- Vulkan
- Cascaded Voxel-Based Ray-Tracing with Spherical Harmonics

New Features

-   VXGI (Voxel-Based Diffuse & Specular Reflection)
-     Physically-Based Shading
- MultiDrawIndirect (with Static/Dynamic/Skeletal mesh support)
- Bindless Textures
-   Automated Batching
-     Deferred Rendering (with normal/diffuse/specular/transparent materials)

- Screen Space Reflection with Raymarching (distance cull & screen bounds fadeout)
- Screen Space Motion Blur (with per pixel motion vectors)
- LightIndexed Light Culling (Cradle Engine exclusive method) [video]
- Depth of Field (automated focusing with camera lens settings)
- Volumetric Fog
- Temporal Anti-Aliasing
- Anti-Aliasing Filters (FXAA/DLAA/NFAA)
- Deferred Decals
- Instanced Stereo Rendering [video]
- HDR Rendering
- Custom Tonemapper (modified curve based on Reinhard)
- Occlusion Culling (rasterization based / updating command buffers in GPU)
- Screen Space Ambient Occlusion
- Skymap Generator (single pass - compute based)
- Signed Distance Field Generator
- Shader System (hot-reloading & include mechanism for GLSL)
- Color Grading
- Dual Paraboloid Environment Mapping (for SSR non-hit pixels)
- Quad-Based Light Culling (vertex shader only)
- Skeletal Bone Animation (vertex shader, 4 bones, compact bone matrix, precalculated bindpose)
- GPU Particles (with Screen Depth / Scene Voxel collision)
- Deferred Shadowmap
- GPU Cloth Simulation (with Screen Depth / Scene Voxel collision)
- Material Manager (with Maps and Lit, Unlit, 2-Sided, Self-Illuminated, Cutout settings)

3DSMax - Cradle Mesh Exporter (.cmesh/.cskel/.canim/.csdf/.cmorph/.xml files)

. Multi-Material support
. Skeletal Bone Animation support (with fps, range & bone count option)
. Per vertex weighted TBN
. Per vertex ambient occlusion
. Signed Distance Field calculation
. Morph target support

Unity - Cradle Mesh Exporter (.cmeshv2)

Unity Editor Cradle Scene Exporter (.xml)

. Supports Renderer, SkinnedMeshRenderer, Material, Light, Camera & AudioSource

Cascaded Voxel-Based Ray-Tracing with Spherical Harmonics

Motion Blur

Light Shafts

Depth of Field

Volumetric Light with Bloom

VXGI

Skin

VXGI - Reflection Debug View

Occlusion Culling

Instanced Stereo Rendering

LightIndexed Deferred Rendering

GPU Cloth Test

Volumetric light with dithered raymarching

GPU Particles with scene depth collision

Quad-Based Light Culling demonstration 256 dynamic point lights

Screen Space Reflection - Proof of Concept

Screen Space Reflection - Efficiency overview

Cradle Engine (2009-2011)

Cradle Engine is render based game engine. It's my spare time hobby project. I decided to implement my M.S. thesis with my engine. Result of thesis work, exclusive GI technique called Bilinear Interpolated Reflective Shadow Maps (BIRSM) included to Cradle Engine.

Features

- Indirect Lighting (Reflective Shadow Maps & "Cradle Engine Exclusive BIRSM")

- Reverse Reprojection Cache optimization (Caching GI Buffer)

- Shadow Mapping (CSM with 2-Cascades & rand. rot. kernel pcf smoothing)

- PostProcess effects (Bloom, Color Tone, SSAO, Depth of Field, Motion Blur, etc..)

- Water rendering (with realtime generated Reflection & Refraction textures)

- Backface, Frustum, Occlusion & EarlyZ culling

- Stencil Shadows (Z-Fail method with silhouette calculation)

- Vertex animation with vertex displacement

- Physx support

- FMod sound support

- Log Manager, Config Manager, Scene Importer (.ces file)