Daedalus Compute Samples

Tiny collection of compute demos, no wrapper around the compute APIs, tested on Windows/Ubuntu.

Features

• ”proof of concept” demos
• supports OpenGL, OpenCL, CUDA compute shaders/kernels
• visualization with OpenGL (vbo/tex interop)

Mesh Deform

Cloth Simulation

Particle Simulation

Ray Tracing in One Weekend by Peter Shirley

PBRT ray-marching volume rendering, with single scattering lighting model

NVIDIA FleX Demo - DamBreak

NVIDIA FleX Demo - FlagCloth

OpenGL samples

OpenCL platform and deivce info for Intel i7-6770HQ + Iris Pro Graphics 580

PLATFORM #0
CL_PLATFORM_VENDOR:                 Intel(R) Corporation
CL_PLATFORM_NAME:                   Intel(R) OpenCL
CL_PLATFORM_VERSION:                OpenCL 2.1
CL_PLATFORM_PROFILE:                FULL_PROFILE

DEVICE #0
CL_DEVICE_VENDOR:                   Intel(R) Corporation
CL_DEVICE_NAME:                     Intel(R) Iris(R) Pro Graphics 580
CL_DEVICE_VERSION:                  OpenCL 2.1 NEO
CL_DRIVER_VERSION:                  25.20.100.6577
CL_DEVICE_PROFILE:                  FULL_PROFILE
CL_DEVICE_MAX_CLOCK_FREQUENCY:      950
CL_DEVICE_MAX_COMPUTE_UNITS:        72
CL_DEVICE_MAX_WORK_GROUP_SIZE:      256
CL_DEVICE_MAX_WORK_ITEM_SIZES:      256x256x256
CL_DEVICE_EXTENSIONS:
                                    cl_intel_accelerator
                                    cl_intel_advanced_motion_estimation
                                    cl_intel_d3d11_nv12_media_sharing
                                    cl_intel_device_side_avc_motion_estimation
                                    cl_intel_driver_diagnostics
                                    cl_intel_dx9_media_sharing
                                    cl_intel_media_block_io
                                    cl_intel_motion_estimation
                                    cl_intel_packed_yuv
                                    cl_intel_planar_yuv
                                    cl_intel_required_subgroup_size
                                    cl_intel_simultaneous_sharing
                                    cl_intel_spirv_device_side_avc_motion_estimation
                                    cl_intel_spirv_media_block_io
                                    cl_intel_spirv_subgroups
                                    cl_intel_subgroups
                                    cl_intel_subgroups_short
                                    cl_khr_3d_image_writes
                                    cl_khr_byte_addressable_store
                                    cl_khr_create_command_queue
                                    cl_khr_d3d10_sharing
                                    cl_khr_d3d11_sharing
                                    cl_khr_depth_images
                                    cl_khr_dx9_media_sharing
                                    cl_khr_fp16
                                    cl_khr_fp64
                                    cl_khr_gl_depth_images
                                    cl_khr_gl_event
                                    cl_khr_gl_msaa_sharing
                                    cl_khr_gl_sharing
                                    cl_khr_global_int32_base_atomics
                                    cl_khr_global_int32_extended_atomics
                                    cl_khr_icd
                                    cl_khr_il_program
                                    cl_khr_image2d_from_buffer
                                    cl_khr_local_int32_base_atomics
                                    cl_khr_local_int32_extended_atomics
                                    cl_khr_mipmap_image
                                    cl_khr_mipmap_image_writes
                                    cl_khr_priority_hints
                                    cl_khr_spir
                                    cl_khr_subgroups
                                    cl_khr_throttle_hints

DEVICE #1
CL_DEVICE_VENDOR:                   Intel(R) Corporation
CL_DEVICE_NAME:                     Intel(R) Core(TM) i7-6770HQ CPU @ 2.60GHz
CL_DEVICE_VERSION:                  OpenCL 2.1 (Build 0)
CL_DRIVER_VERSION:                  7.6.0.1125
CL_DEVICE_PROFILE:                  FULL_PROFILE
CL_DEVICE_MAX_CLOCK_FREQUENCY:      2600
CL_DEVICE_MAX_COMPUTE_UNITS:        8
CL_DEVICE_MAX_WORK_GROUP_SIZE:      8192
CL_DEVICE_MAX_WORK_ITEM_SIZES:      8192x8192x8192
CL_DEVICE_EXTENSIONS:
                                    cl_intel_dx9_media_sharing
                                    cl_intel_exec_by_local_thread
                                    cl_intel_vec_len_hint
                                    cl_khr_3d_image_writes
                                    cl_khr_byte_addressable_store
                                    cl_khr_d3d11_sharing
                                    cl_khr_depth_images
                                    cl_khr_dx9_media_sharing
                                    cl_khr_fp64
                                    cl_khr_gl_sharing
                                    cl_khr_global_int32_base_atomics
                                    cl_khr_global_int32_extended_atomics
                                    cl_khr_icd
                                    cl_khr_image2d_from_buffer
                                    cl_khr_local_int32_base_atomics
                                    cl_khr_local_int32_extended_atomics
                                    cl_khr_spir

Configure, build and run

git clone https://github.com/Woking-34/daedalus-compute.git
cd daedalus-compute
mkdir daedalus-build && cd daedalus-build
cmake .. -G"Visual Studio 15 2017 Win64"
cmake --build . --target comp_deform_gl --config Release
cmake --build . --target comp_cloth_gl --config Release
cmake --build . --target comp_particles_gl --config Release
...

cd ../daedalus-bin/Win64/Release
comp_deform_gl.exe
comp_cloth_gl.exe
comp_particles_gl.exe
...

Todos

• fix CUDA texture interop fallback path
• fix rtow OpenCL vc CUDA perf diff

References

• NVIDIA OpenCL SDK - OpenCL Simple OpenGL Interop
• NVIDIA OpenCL SDK - OpenCL Particle Collision Simulation
• MMMovania - OpenCloth
• Marco Fratarcangeli - GPGPU Cloth simulation using GLSL, OpenCL and CUDA
• RenderMonkey GLSL velvet shader
• petershirley - raytracinginoneweekend
• rogerallen - raytracinginoneweekendincuda
• ISPC examples - volume_rendering
• NVIDIA GameWorks - FleX