{"id":51248733,"url":"https://github.com/pablobh2147/hoshizora","last_synced_at":"2026-06-29T06:02:16.883Z","repository":{"id":361481080,"uuid":"737754412","full_name":"pablobh2147/Hoshizora","owner":"pablobh2147","description":"A from-scratch, physically-based rendering engine built in C++.","archived":false,"fork":false,"pushed_at":"2026-06-07T09:55:47.000Z","size":6998,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"master","last_synced_at":"2026-06-07T11:08:14.775Z","etag":null,"topics":["computer-graphics","cpp","graphics-programming","path-tracing","pbr","physically-based-rendering","raytracing","rendering"],"latest_commit_sha":null,"homepage":"","language":"C++","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/pablobh2147.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null,"notice":null,"maintainers":null,"copyright":null,"agents":null,"dco":null,"cla":null}},"created_at":"2024-01-01T11:23:50.000Z","updated_at":"2026-06-06T17:59:54.000Z","dependencies_parsed_at":null,"dependency_job_id":null,"html_url":"https://github.com/pablobh2147/Hoshizora","commit_stats":null,"previous_names":["pablobh2147/raytracing-engine","pablobh2147/hoshizora"],"tags_count":null,"template":false,"template_full_name":null,"purl":"pkg:github/pablobh2147/Hoshizora","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pablobh2147%2FHoshizora","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pablobh2147%2FHoshizora/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pablobh2147%2FHoshizora/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pablobh2147%2FHoshizora/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/pablobh2147","download_url":"https://codeload.github.com/pablobh2147/Hoshizora/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pablobh2147%2FHoshizora/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":34915002,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-05-26T15:22:16.424Z","status":"online","status_checked_at":"2026-06-29T02:00:05.398Z","response_time":58,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["computer-graphics","cpp","graphics-programming","path-tracing","pbr","physically-based-rendering","raytracing","rendering"],"created_at":"2026-06-29T06:02:15.147Z","updated_at":"2026-06-29T06:02:16.878Z","avatar_url":"https://github.com/pablobh2147.png","language":"C++","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Hoshizora (星空) — Physically Based Renderer\n\nA from-scratch, GPU-accelerated physically-based rendering engine built in C++ and Vulkan compute shaders as a personal learning project.\n\n\u003e **Hoshizora (星空):** It means *Starry Sky* in Japanese. A physical metaphor for a blank canvas catching millions of simulated rays, tracing the path of light through a synthetic universe.\n\n## Examples\n\n\u003cp align=\"center\"\u003e\n  \u003cimg src=\"docs/img/example-1.gif\" alt=\"Example render 1\" width=\"45%\"\u003e\n  \u003cimg src=\"docs/img/example-2.gif\" alt=\"Example render 2\" width=\"45%\"\u003e\n\u003c/p\u003e\n\u003cp align=\"center\"\u003e\n  \u003cimg src=\"docs/img/example-3.png\" alt=\"Example render 3\" width=\"90%\"\u003e\n\u003c/p\u003e\n\n## Overview\n\nThis project implements a GPU-accelerated path tracer using Vulkan compute shaders, capable of rendering scenes with realistic lighting and materials. It features:\n\n- **GPU-accelerated path tracing** via Vulkan compute shaders\n- **Physically-based rendering** with metallic/roughness workflow\n- **Global illumination** through path tracing\n- **Material system** supporting albedo, roughness, metallic, and emissive properties\n- **Multi-sample anti-aliasing** for noise reduction\n- **Animation support** for camera movement sequences\n\n## Technical Details\n\n- **Language**: C++20\n- **GPU API**: Vulkan (compute shaders)\n- **GPU memory**: Vulkan Memory Allocator (VMA)\n- **Shading language**: GLSL\n- **Math library**: GLM\n- **Image output**: STB Image Write\n- **Build system**: CMake\n\n## Future Goals\n\n- **Enhanced material models** for more realistic surfaces\n- **Scene file format** for easier scene configuration\n- **Real-time preview** capabilities\n\n## Building\n\n```bash\n# Clone with submodules\ngit clone --recursive https://github.com/pablobh2147/hoshizora\n\n# Build\ncmake -B build\ncmake --build build\n\n# Run\n./build/Hoshizora ./examples/scene-01\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpablobh2147%2Fhoshizora","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fpablobh2147%2Fhoshizora","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpablobh2147%2Fhoshizora/lists"}