konstatoivanen/PKRenderer

konstatoivanen/PKRenderer has 35 GitHub stars and 4 forks. GitHot measured 0 stars in 24 hours and +1 in 7 days. Last checked 2026-11-09 23:59 UTC. Last push 2026-11-05.

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A Physically Based Vulkan Renderer.

35 stars 4 forks

What you can do

Screen space radiance cache (for ray traced radiance).
Voxel cone traced world space radiance cache.
Basic ReSTIR for diffuse hits.
Recurrent blur denoiser.

Measured star growth

in 24h: 0
in 7 days: +1
in 15 days: Collecting history
in 1 month: Collecting history

Net star changes over overlapping periods, not daily totals. Missing measurements are left blank. Stars measure attention, not software quality.

README.md

Original

PK Renderer

A physically based real-time renderer made with C++, Slang & Vulkan.

The goal of this project is to be a feature rich & performant renderer without any precomputed scene structures or light transport. The visual target is to get as close as possible to path-traced reference lighting. The performance target is to stay at a stable 6.94ms/144hz framerate at 1080p on a RTX 2080 TI. However, this is ultimately a hobby project & thus likely to remain perpetually a work in progress.

Previews

Features

Ray Traced Global Illumination

Screen space radiance cache (for ray traced radiance).
Voxel cone traced world space radiance cache.
Basic ReSTIR for diffuse hits.
Recurrent blur denoiser.
Volumetrics integration.
Rough specular approximation from diffuse SH1.
Async TLAS & BLAS builds.

Analytic Lights

Spot, point & directional lights.
IES profile support.
Spherical area light estimation for all types.
Poisson PCF shadow filtering.
PCSS shadow filtering for directional lights.
Bend screen space shadows.
Directional shadow cascades.
Clustered forward rendering.

Shading

PBR BxDF
- Chan Diffuse term
- GGX normal distribution term.
- Smith GGX correlated visibility term.
- Hanrahan Krueger sub surface term.
- Clear coat support.
- Sheen support.
PBR volumetric fog.
Octahedron mapped GGX HDR IBL (used for rt & sky).
Spherical harmonics convolution from from IBL (for volumetrics).
GBuffers (normals, roughness, min/max/avg hierarchical depth).

Post Processing

Temporal antialiasing.
HDR bloom.
Luminance histogram based auto exposure.
Bokeh depth of field & auto focus.
GT Uchimura tone mapping.
Agx tone mapping.
Color grading.
Film grain.
Vignette.
Panini Projection
Chromatic aberration

Meshlet Rendering

16 byte vertex packing.
- unorm 16 xyz vertex position relative to submesh aabb.
- r4g4b4 color
- tangent sign 1 bit
- half2 texcoord
- 10r10b10g2a quaternion.
directed acyclic graph lod levels.
task shader cone culling.
task shader frustum culling.
global virtual buffers for all geometry resources.
dynamically batched draw calls.
material batching.
- all material properties in a single buffer.
- shader specific property layout & offset to property buffer.

Architecture

Vulkan 1.4 rendering backend.
- "No-API" style design.
- Fully bindless
Async compute & transfer queues.
Render graph builder.
- Subresource level dependency tracking.
Entity component system.
Custom compressed mesh & shader formats.
Asset hot reloading
Console command interface.

Planned

skinned geometry.
GPU culling.
SH probe based world space radiance cache.
GPU particle engine.
DX12 backend (unlikely... cant do async ray trace afaik).
Serialized scene representation.

Dependencies

Required Vulkan & GLSL Features & Extensions

Vulkan Version 1.4
SPRIV Version 1.6

GLSL Extensions:
- GL_EXT_shader_explicit_arithmetic_types
- GL_EXT_nonuniform_qualifier
- GL_ARB_shader_viewport_layer_array
- GL_EXT_ray_tracing
- GL_KHR_shader_subgroup_ballot
- GL_EXT_control_flow_attributes
- GL_KHR_shader_subgroup_ballot
- GL_KHR_shader_subgroup_arithmetic
- GL_KHR_shader_subgroup_shuffle
- GL_KHR_shader_subgroup_vote
- GL_EXT_ray_tracing_position_fetch
- GL_EXT_mesh_shader
- GL_EXT_shader_image_load_formatted
- GL_EXT_samplerless_texture_functions
- GL_EXT_shader_16bit_storage
- GL_EXT_debug_printf

Validation layers:
- VK_LAYER_KHRONOS_validation

Instance Extensions:
- VK_KHR_surface
- VK_EXT_debug_utils
- VK_KHR_get_physical_device_properties2
- VK_KHR_get_surface_capabilities2
- VK_KHR_surface_maintenance1


Device Extensions:
- VK_KHR_surface
- VK_KHR_win32_surface
- VK_KHR_swapchain
- VK_KHR_deferred_host_operations
- VK_KHR_acceleration_structure
- VK_KHR_ray_tracing_pipeline
- VK_KHR_ray_query
- VK_EXT_conservative_rasterization
- VK_EXT_shader_atomic_float
- VK_KHR_ray_tracing_position_fetch
- VK_EXT_mesh_shader
- VK_KHR_shader_maximal_reconvergence
- VK_KHR_shader_quad_control
- VK_KHR_fragment_shading_rate
- VK_EXT_extended_dynamic_state3
- VK_EXT_full_screen_exclusive
- VK_EXT_present_mode_fifo_latest_ready
- VK_KHR_present_wait
- VK_KHR_present_id
- VK_KHR_swapchain_maintenance1
- VK_EXT_descriptor_heap
- VK_KHR_unified_image_layouts

Physical Device Requirements:
- alphaToOne
- sampleRateShading
- fillModeNonSolid
- shaderImageGatherExtended
- sparseBinding
- sparseResidencyBuffer
- samplerAnisotropy
- multiViewport
- shaderSampledImageArrayDynamicIndexing
- shaderUniformBufferArrayDynamicIndexing
- shaderFloat64
- shaderInt16
- shaderInt64
- imageCubeArray
- fragmentStoresAndAtomics
- multiDrawIndirect
- shaderStorageImageReadWithoutFormat
- shaderStorageImageWriteWithoutFormat
- depthClamp
- storageBuffer16BitAccess
- uniformAndStorageBuffer16BitAccess
- storagePushConstant16
- multiview
- shaderUniformBufferArrayNonUniformIndexing
- shaderSampledImageArrayNonUniformIndexing
- runtimeDescriptorArray
- descriptorBindingVariableDescriptorCount
- descriptorBindingPartiallyBound
- scalarBlockLayout
- shaderFloat16
- shaderInt8
- shaderOutputViewportIndex
- shaderOutputLayer
- bufferDeviceAddress
- timelineSemaphore
- storageBuffer8BitAccess
- hostQueryReset
- privateData
- maintenance4
- dynamicRendering
- dynamicRenderingLocalRead
- smoothLines
- accelerationStructure
- rayTracingPipeline
- rayQuery
- shaderSharedFloat32AtomicAdd
- rayTracingPositionFetch
- taskShader
- meshShader
- multiviewMeshShader
- primitiveFragmentShadingRateMeshShader
- primitiveFragmentShadingRate
- pipelineFragmentShadingRate
- presentModeFifoLatestReady
- swapchainMaintenance1
- presentId
- presentWait
- shaderMaximalReconvergence
- shaderQuadControl
- descriptorBuffer
- descriptorBufferImageLayoutIgnored
- meshShaderQueries
- pushDescriptor

Libraries & Dependencies

Platform & Build Support

Warning The project has only been tested on Windows 10, support for systems or versions is untested.

Warning The project has only been tested on an NVIDIA RTX 2080 TI, support for other vendors or devices is untested.

Warning Building requires MSBuild and a C++ 20 standard compatible version of MSCV or clang-cl.

Warning Building only the PKRenderer project requires a compatible build of PKAssetTools.

Build using MSBuild CLI:

msbuild.exe PKRenderer.sln /property:Configuration=Release or

msbuild.exe PKRenderer.sln /property:Configuration=ClangRelease or

msbuild.exe PKRenderer.sln /property:Configuration=Debug or

msbuild.exe PKRenderer.sln /property:Configuration=ClangDebug or

through Visual Studio (you know how that goes).

Transfer to a more portable build system is planned but has a very low priority.

konstatoivanen/PKRenderer

What you can do

Measured star growth

README.md

PK Renderer

Previews

Features

Dependencies

Platform & Build Support

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