feat: replace glslang+spirv-cross with glslpp for GLSL→HLSL shadertoy compilation

.github/FUNDING.yml

@@ -0,0 +1,15 @@
+# These are supported funding model platforms
+
+github: [deblasis]
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: deblasis
+tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+lfx_crowdfunding: # Replace with a single LFX Crowdfunding project-name e.g., cloud-foundry
+polar: # Replace with a single Polar username
+buy_me_a_coffee: # Replace with a single Buy Me a Coffee username
+thanks_dev: # Replace with a single thanks.dev username
+custom: deblasis.eth

.github/workflows/clean-artifacts.yml

@@ -6,6 +6,7 @@ on:
   workflow_dispatch:
 jobs:
   remove-old-artifacts:
+    if: github.repository == 'ghostty-org/ghostty'
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:

.github/workflows/dispatch-release-bump.yml

@@ -0,0 +1,31 @@
+# Fires a repository_dispatch at deblasis/wintty-release on windows-branch pushes.
+
+name: dispatch-release-bump
+
+on:
+  push:
+    branches: [windows]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: false
+
+permissions: {}
+
+jobs:
+  dispatch:
+    if: vars.ENABLE_WINTTY_RELEASE_DISPATCH == 'true'
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - name: Dispatch wintty-windows-head to deblasis/wintty-release
+        env:
+          GH_TOKEN: ${{ secrets.WINTTY_RELEASE_DISPATCH_PAT }}
+          COMMIT_SUBJECT: ${{ github.event.head_commit.message }}
+        run: |
+          gh api /repos/deblasis/wintty-release/dispatches \
+            -f event_type=wintty-windows-head \
+            -f "client_payload[sha]=${{ github.sha }}" \
+            -f "client_payload[source_repo]=deblasis/wintty" \
+            -f "client_payload[ref]=${{ github.ref }}" \
+            -f "client_payload[subject]=$COMMIT_SUBJECT"

.github/workflows/milestone.yml

@@ -13,7 +13,7 @@ jobs:
   update-milestone:
     # Ignore bot-authored pull requests (dependabot, app bots, etc)
     # and CI-only PRs.
-    if: github.event_name == 'issues' || (github.event.pull_request.user.type != 'Bot' && !startsWith(github.event.pull_request.title, 'ci:'))
+    if: github.repository == 'ghostty-org/ghostty' && (github.event_name == 'issues' || (github.event.pull_request.user.type != 'Bot' && !startsWith(github.event.pull_request.title, 'ci:')))
     runs-on: namespace-profile-ghostty-sm
     name: Milestone Update
     steps:

.github/workflows/publish-tag.yml

@@ -15,6 +15,7 @@ concurrency:
 
 jobs:
   setup:
+    if: github.repository == 'ghostty-org/ghostty'
     runs-on: namespace-profile-ghostty-sm
     outputs:
       version: ${{ steps.extract_version.outputs.version }}

.github/workflows/release-tag.yml

@@ -22,6 +22,7 @@ concurrency:
 
 jobs:
   setup:
+    if: github.repository == 'ghostty-org/ghostty'
     runs-on: namespace-profile-ghostty-sm
     outputs:
       version: ${{ steps.extract_version.outputs.version }}

.github/workflows/snap.yml

@@ -14,6 +14,7 @@ name: Snap
 
 jobs:
   build:
+    if: github.repository == 'ghostty-org/ghostty'
     strategy:
       fail-fast: false
       matrix:

.github/workflows/test.yml

@@ -79,7 +79,7 @@ jobs:
 
   required:
     name: "Required Checks: Test"
-    if: always()
+    if: always() && github.repository == 'ghostty-org/ghostty'
     runs-on: namespace-profile-ghostty-xsm
     needs:
       - skip

.github/workflows/trigger-release.yml

@@ -0,0 +1,40 @@
+# On tag push (v*), fires a repository_dispatch at deblasis/wintty-release so
+# the private release repo can build, pack, and upload without R2 or signing
+# credentials living in this public repo.
+#
+# Dormant until vars.ENABLE_WINTTY_RELEASE_DISPATCH == 'true', so it stays
+# quiet before the private repo + dispatch PAT are provisioned.
+
+name: trigger-release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: false
+
+jobs:
+  dispatch:
+    if: vars.ENABLE_WINTTY_RELEASE_DISPATCH == 'true'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Derive channel from ref
+        id: chan
+        shell: bash
+        run: |
+          case "${{ github.ref }}" in
+            refs/tags/v*) echo "channel=stable" >> "$GITHUB_OUTPUT" ;;
+            *)            echo "channel=tip"    >> "$GITHUB_OUTPUT" ;;
+          esac
+
+      - name: Dispatch release event to deblasis/wintty-release
+        env:
+          GH_TOKEN: ${{ secrets.WINTTY_RELEASE_DISPATCH_PAT }}
+        run: |
+          gh api /repos/deblasis/wintty-release/dispatches \
+            -f event_type=release \
+            -f "client_payload[channel]=${{ steps.chan.outputs.channel }}" \
+            -f "client_payload[ref]=${{ github.ref }}"

.github/workflows/vouch-check-issue.yml

@@ -6,6 +6,7 @@ name: "Vouch - Check Issue"
 
 jobs:
   check:
+    if: github.repository == 'ghostty-org/ghostty'
     runs-on: namespace-profile-ghostty-xsm
     steps:
       - uses: actions/create-github-app-token@1b10c78c7865c340bc4f6099eb2f838309f1e8c3 # v3.1.1

.github/workflows/vouch-check-pr.yml

@@ -6,6 +6,7 @@ name: "Vouch - Check PR"
 
 jobs:
   check:
+    if: github.repository == 'ghostty-org/ghostty'
     runs-on: namespace-profile-ghostty-xsm
     steps:
       - uses: actions/create-github-app-token@1b10c78c7865c340bc4f6099eb2f838309f1e8c3 # v3.1.1

.github/workflows/vouch-manage-by-discussion.yml

@@ -10,6 +10,7 @@ concurrency:
 
 jobs:
   manage:
+    if: github.repository == 'ghostty-org/ghostty'
     runs-on: namespace-profile-ghostty-xsm
     steps:
       - uses: actions/create-github-app-token@1b10c78c7865c340bc4f6099eb2f838309f1e8c3 # v3.1.1

.github/workflows/vouch-manage-by-issue.yml

@@ -10,6 +10,7 @@ concurrency:
 
 jobs:
   manage:
+    if: github.repository == 'ghostty-org/ghostty'
     runs-on: namespace-profile-ghostty-xsm
     steps:
       - uses: actions/create-github-app-token@1b10c78c7865c340bc4f6099eb2f838309f1e8c3 # v3.1.1

.github/workflows/vouch-sync-codeowners.yml

@@ -11,6 +11,7 @@ concurrency:
 
 jobs:
   sync:
+    if: github.repository == 'ghostty-org/ghostty'
     runs-on: namespace-profile-ghostty-xsm
     steps:
       - uses: actions/create-github-app-token@1b10c78c7865c340bc4f6099eb2f838309f1e8c3 # v3.1.1

.gitignore

@@ -4,6 +4,18 @@
 *.log
 .DS_Store
 .vscode/
+.vs/
+
+# .NET build output (scoped to known .NET project roots to avoid
+# masking Zig build paths). windows/ is the WinUI 3 shell; dist/windows/
+# is the IconGen build tool and its tests.
+windows/**/bin/
+windows/**/obj/
+dist/windows/**/bin/
+dist/windows/**/obj/
+# MSBuild binary log, created by `dotnet build -bl` and some Visual
+# Studio workflows. Never something we want committed.
+*.binlog
 .direnv/
 .envrc.local
 .flatpak-builder/
@@ -29,3 +41,12 @@ glad.zip
 
 vgcore.*
 
+# MSVC build outputs for glslang shader wrapper (regenerated by build_msvc.bat)
+pkg/glslang/glslang_dll/
+pkg/glslang/msvc_build/
+pkg/glslang/msvc_build_md/
+
+# IconGen preview output from `just branding-preview`
+/dist/windows/preview/
+
+zig-pkg/

.zig-version

@@ -0,0 +1 @@
+0.15.2

README.md

@@ -1,8 +1,9 @@
 <!-- LOGO -->
 <h1>
 <p align="center">
-  <img src="https://github.com/user-attachments/assets/fe853809-ba8b-400b-83ab-a9a0da25be8a" alt="Logo" width="128">
-  <br>Ghostty
+  <img src="https://github.com/user-attachments/assets/eed9e6f8-dfc5-4e29-b3bb-53ca39cf6aeb" alt="Logo" width="128" />
+  <br><a href="https://wintty.io?utm_source=gh_readme">Wintty</a>
+</p>
 </h1>
   <p align="center">
     Fast, native, feature-rich terminal emulator pushing modern features.
@@ -21,6 +22,121 @@
   </p>
 </p>
 
+> [!IMPORTANT]
+> ## Wintty (Ghostty R&D Soft Fork)
+>
+> <p align="center">🍬🍴</p>
+>
+> This is a soft fork focused on bringing Ghostty to Windows.
+> The `windows` branch is the default and contains all Windows-specific work
+> rebased on top of upstream `main`, which is synced daily.
+>
+> **Status:** DX12 renderer in progress, WinUI 3 shell with tabs, splits, jump list, taskbar progress, and runtime layout switch landed
+>
+> **MVWT** Minimum Viewable Windows Terminal
+> `[█████████████████▌░░] 88%`
+>
+> **MVT** Moonshot Viable Terminal ([#26](https://github.com/deblasis/ghostty/issues/26))
+> `[░░░░░░░░░░░░░░░░░░░░]  0%`
+>
+> The Windows app is a native C# GUI wrapping `libghostty.dll`, same architecture
+> as macOS where Swift wraps `libghostty`. All terminal emulation stays in Zig.
+> The C# layer handles windowing, input, and platform integration via P/Invoke.
+> The renderer uses DirectX 12 with DXGI swap chains and DirectComposition.
+>
+> ### Building
+>
+> Prerequisites: [Zig](https://ziglang.org/) (version in `build.zig.zon`), [Just](https://github.com/casey/just)
+>
+> ```bash
+> just              # Run tests + build DLL
+> just test         # Run all Zig tests
+> just test-lib-vt  # Fast: test libghostty-vt only
+> just build-dll    # Build libghostty.dll
+> just sync         # Rebase on latest upstream
+> ```
+>
+> See [docs/windows/tooling.md](docs/windows/tooling.md) for why Just and how CI (I should call it DisContinous Integration) works.
+>
+> ### Branching Model
+>
+> - `main` - mirror of upstream `ghostty-org/ghostty`, synced daily, if it's a good day
+> - `windows` (default) - all Windows work rebased on upstream
+> - Feature branches - branch off `windows`, PR back into `windows`
+>
+> ### What is done
+>
+> **Build infrastructure** (17 PRs merged upstream)
+>
+> - [x] `zig build test` passing on Windows (2604 tests, 53 skipped)
+> - [x] All shared dependencies building (FreeType, HarfBuzz, zlib, oniguruma, glslang, etc.)
+> - [x] `zig build test-lib-vt` passing on all platforms
+> - [x] Windows CI running without `continue-on-error`
+> - [x] Backslash path handling in config parsing
+> - [x] CRLF line ending fix for comptime parsing + `.gitattributes` normalization
+> - [x] `ghostty.dll` building on Windows (CRT init fix for MSVC DLL mode)
+> - [x] DLL init regression test and build instructions
+> - [x] Full Windows CI test suite
+>
+> **DX12 renderer infrastructure** (in fork, in progress)
+>
+> - [x] DXGI bindings (adapters, factories, swap chains -- carried from DX11)
+> - [x] DirectComposition bindings (DWM composition -- carried from DX11)
+> - [x] COM helpers and test infrastructure (carried from DX11)
+> - [x] HLSL shaders (5 pipelines, SM 6.0 via dxc.exe)
+> - [x] D3D12 COM interface bindings
+> - [x] DX12 device lifecycle (command queue, fence, descriptor heaps)
+> - [x] DX12 render pipeline (PSOs, root signatures, command lists)
+> - [x] DX12 GPU primitives (upload heap buffers, textures, samplers)
+> - [x] Backend enum with `directx12` variant
+>
+> **SwapChainPanel spike** (in fork, [demo video](https://www.youtube.com/watch?v=-Cn9mlxX_GA))
+>
+> - [x] DX11 swap chain created from Zig, bound to WinUI 3 SwapChainPanel
+> - [x] Instanced cell grid rendering, bitmap font, animated demo scenes, resize, DPI
+>
+> **App scaffold** (in fork)
+>
+> - [x] C# WinUI 3 project scaffold (`windows/Ghostty/`)
+> - [x] P/Invoke bindings for libghostty C API
+> - [x] `--version` flag working from command line
+> - [x] Interop test suite (7 tests against the real DLL)
+>
+> ### Architecture: Surface Modes
+>
+> The DX12 renderer supports three surface modes at the library level so that
+> libghostty consumers can pick whichever model fits their host:
+> - **HWND** -- `CreateSwapChainForHwnd` via DXGI, for standalone windows, test harnesses, and third-party embedders
+> - **SwapChainPanel** (composition) -- `CreateSwapChainForComposition` via DXGI, for WinUI 3 / XAML hosts
+> - **Shared texture** -- renders to a standalone `ID3D12Resource` (texture) with a DXGI shared handle, for game engines, custom renderers, and offscreen scenarios
+>
+> The device picks the path based on what the caller provides. No compile-time flags.
+>
+> ### What is next
+>
+> **Feature parity** (later)
+>
+> - [ ] Multi-window, tabs, splits
+> - [ ] Native settings UI, desktop notifications
+> - [ ] Quick terminal, command palette, global keybinds
+> - [ ] Installer packages (MSI, MSIX, winget), auto-update
+>
+> ### .NET Examples
+>
+> .NET-specific examples live in [deblasis/libghostty-dotnet](https://github.com/deblasis/libghostty-dotnet),
+> separate from the `example/` directory in this repo which is for C and Zig.
+> These examples help surface friction points, bugs, and integration gaps
+> from the perspective of a .NET consumer of libghostty.
+>
+> ### History
+>
+> This fork started as an upstream contribution effort. 17 PRs were merged
+> into ghostty-org/ghostty covering build fixes, CI, and DLL infrastructure.
+> The project continues as a soft fork - upstream doesn't have capacity to
+> maintain Windows-specific changes right now, so here we are.
+> GitHub Actions are disabled for this fork because we are poor and just.
+> I mean, we use `just` for insanity checks.
+
 ## About
 
 Ghostty is a terminal emulator that differentiates itself by being

build.zig

@@ -194,8 +194,14 @@ pub fn build(b: *std.Build) !void {
         if (!config.target.result.os.tag.isDarwin()) {
             lib_shared.installHeader(); // Only need one header
             if (config.target.result.os.tag == .windows) {
-                lib_shared.install("ghostty-internal.dll");
-                lib_static.install("ghostty-internal-static.lib");
+                lib_shared.install("ghostty.dll");
+                if (lib_shared.implib) |implib| {
+                    b.getInstallStep().dependOn(&b.addInstallLibFile(
+                        implib,
+                        "ghostty.lib",
+                    ).step);
+                }
+                lib_static.install("ghostty-static.lib");
             } else {
                 lib_shared.install("ghostty-internal.so");
                 lib_static.install("ghostty-internal.a");

build.zig.zon

@@ -80,8 +80,7 @@
         .zlib = .{ .path = "./pkg/zlib", .lazy = true },
 
         // Shader translation
-        .glslang = .{ .path = "./pkg/glslang", .lazy = true },
-        .spirv_cross = .{ .path = "./pkg/spirv-cross", .lazy = true },
+        .glslpp = .{ .path = "../glslpp" },
 
         // Wayland
         .wayland = .{