nvpro-samples/vk_raytrace

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Created over 4 years ago
Updated 3 months ago

nvpro-samples/vk_raytrace

nvpro-samples

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Ray tracing glTF scene with Vulkan

VK_RAYTRACE

This project is a glTF 2.0 sample viewer using Vulkan ray tracing. It follows the ray tracing tutorial and combines all chapters into a single example.

The lighting equation is based on:

glTF PBR reference implementation from Khronos.
Disney PBR

The rendering pipeline can be switched from:

RTX: RayGen, Closest-Hit, Miss, Any-Hit model
Compute: using Ray Query

Features

Load glTF 2.0 files ascii and binary using tiny glTF
Support for full node hierarchy
Full implementation of metallic-roughness and specular-glossiness
IBL lighting using importance light sampling
Alpha blend and cut-out
Texture transforms and samplers

Attributes

Normal : create geometric normal when not present
Texture coords : only set 0, project cube map when text coords are missing.
Tangents : generate tangents and bitangent when missing.
Color : default (1,1,1,1)

Extensions

Usage

Controls

Action	Description
`LMB`	Rotate around the target
`RMB`	Dolly in/out
`MMB`	Pan along view plane
`LMB + Shift`	Dolly in/out
`LMB + Ctrl`	Pan
`LMB + Alt`	Look around
`Mouse wheel`	Dolly in/out
`Mouse wheel + Shift`	Zoom in/out (FOV)
`Space`	Set interest point on the surface under the mouse cursor.
`F10`	Toggle UI pane.

Change glTF model

Drag and drop glTF files (.gltf or .glb) into viewer

Change HDR lighting

Drag and drop HDR files (.hdr) into viewer

Setup

git clone --recursive --shallow-submodules https://github.com/nvpro-samples/nvpro_core.git
git clone https://github.com/nvpro-samples/vk_raytrace.git

Other

Tags:

raytracing, GLTF, HDR, tonemapper, picking, BLAS, TLAS, PBR material

Extensions:

VK_KHR_RAY_QUERY_EXTENSION_NAME
VK_KHR_RAY_TRACING_PIPELINE_EXTENSION_NAME
VK_KHR_ACCELERATION_STRUCTURE_EXTENSION_NAME
VK_KHR_SHADER_CLOCK_EXTENSION_NAME
VK_KHR_MAINTENANCE3_EXTENSION_NAME
VK_KHR_PIPELINE_LIBRARY_EXTENSION_NAME
VK_KHR_DEFERRED_HOST_OPERATIONS_EXTENSION_NAME
VK_KHR_BUFFER_DEVICE_ADDRESS_EXTENSION_NAME
VK_EXT_SCALAR_BLOCK_LAYOUT_EXTENSION_NAME
VK_EXT_DESCRIPTOR_INDEXING_EXTENSION_NAME
VK_KHR_GET_MEMORY_REQUIREMENTS_2_EXTENSION_NAME
VK_KHR_DEDICATED_ALLOCATION_EXTENSION_NAME
VK_KHR_SWAPCHAIN_EXTENSION_NAME
VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME
VK_EXT_DEBUG_UTILS_EXTENSION_NAME
VK_KHR_SURFACE_EXTENSION_NAME

Links

Test Scenes

Model	Link
	2 Cylinder Engine
	Alpha Blending
	Anisotropy
	Antique Camera
	Boom Box
	Carbon Fiber
	Clear Coat
	Corset
	Damaged Helmet
	Flight Helmet
	Metal Rough Spheres
	Punctual Light
	SciFi
	SpecGlossVsMetalRough
	Unlit
	Transmission
	Box Vertex Color

vk_raytracing_tutorial_KHR

Ray tracing examples and tutorials using VK_KHR_ray_tracing

vk_mini_path_tracer

A beginner-friendly Vulkan path tracing tutorial in under 300 lines of C++.

gl_occlusion_culling

OpenGL sample for shader-based occlusion culling

nvpro_core

shared source code and resources needed for the samples to run

optix_advanced_samples

gl_ssao

optimized screen-space ambient occlusion, cache-aware hbao

gl_vk_meshlet_cadscene

This OpenGL/Vulkan sample illustrates the use of "mesh shaders" for rendering CAD models.

build_all

GO HERE FIRST: nvpro-samples overview

vk_order_independent_transparency

Demonstrates seven different techniques for order-independent transparency in Vulkan.

vk_video_samples

Vulkan video samples

gl_vk_chopper

Simple vulkan rendering example.

vk_mini_samples

Collection of Vulkan samples

vk_raytracing_tutorial_NV

Vulkan ray tracing examples and tutorials using VK_NV_ray_tracing

gl_vk_threaded_cadscene

OpenGL and Vulkan comparison on rendering a CAD scene using various techniques

gl_cadscene_rendertechniques

OpenGL sample on various rendering approaches for typical CAD scenes

gl_commandlist_basic

OpenGL sample for NV_command_list

vk_displacement_micromaps

This sample showcases rasterizing and ray tracing displaced NVIDIA Micro-Mesh assets in Vulkan with and without the VK_NV_displacement_micromap extension.

vk_denoise

Denoising a Vulkan ray traced image using OptiX denoiser

gl_vk_bk3dthreaded

Vulkan sample rendering 3D with 'worker-threads'

gl_vk_simple_interop

Display an image created by Vulkan compute shader, with OpenGL

vk_shaded_gltfscene

Rendering glTF scenes with ray tracer and raster (Vulkan)

vk_toon_shader

Silhouette and toon shading post-processing with Vulkan

gl_dynamic_lod

GPU classifies how to render millions of particles

gl_vk_supersampled

Vulkan sample showing a high quality super-sampled rendering

nvtt_samples

NVIDIA Texture Tools samples for compression, image processing, and decompression.

optix_prime_baking

Shows how to bake ambient occlusion at mesh vertices using OptiX Prime

vk_compute_mipmaps

Customizable compute shader for fast cache-aware mipmap generation

gl_vk_raytrace_interop

Adding ray traced ambient occlusion using Vulkan and OpenGL

vk_async_resources

Sample showcasing lifetime management and resource transfers in Vulkan

gl_render_vk_ddisplay

OpenGL sample that renders into a Vulkan direct display

gl_multicast

OpenGL sample for the new GL_NVX_linked_gpu_multicast extension

vk_device_generated_cmds

Vulkan sample on VK_NV_device_generated_commands

vk_timeline_semaphore

Vulkan timeline semaphore + async compute performance sample

shared_external

external libraries, needed for the samples (AntTweakBar; ZLib...)

vk_offline

Rendering offline using Vulkan without opening a window

glsl_indexed_types_generator

GLSL code generator to aid use of Vulkan's descriptor set indexing

vk_memory_decompression

Vulkan Memory Decompression (VK_NV_memory_decompression) sample

gl_cuda_simple_interop

Sample showing OpenGL and CUDA interop

vk_streamline

DLSS Super Resolution and DLSS Frame Generation via Streamline

vk_idbuffer_rasterization

Vulkan sample to render efficient per-part IDs in CAD models

gl_path_rendering_CMYK

Example of how to use path rendering; and how to use it with CMYK (using multi-render target)

dx12_present_barrier

This sample demonstrates the usage of the new NvAPI interface to synchronize present calls between windows on the same system as well as on distributed systems.

nvml_enterprise_gpu_check

Shows how to check if a GPU is an Enterprise/Quadro GPU using NVML.

vk_raytrace_displacement

third_party_binaries

pre-built libraries for the nvpro-samples framework

vk_inherited_viewport

VK_NV_inherited_viewport_scissor and secondary subpass command buffer re-use

gl_vrs

Variable Rate Shading in OpenGL

vk_ddisplay

Sample to demonstrate multi-GPU rendering and presenting to ddisplays, meaning displays that are not part of the Windows desktop and of which an application takes complete control.