From 64c21337e7ccd3e158462771cd2e2886554256f0 Mon Sep 17 00:00:00 2001 From: Adam Malczewski Date: Sat, 13 Jun 2026 17:09:24 +0900 Subject: Slice 10 a1: preview pipeline spike — wlr pixels -> RMLUi texture (Fork-B GO) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The keystone for the stage dock. Proves Fork B on the real target (Mesa crocus, HD 4400): a toplevel's pixels, rendered by the wlr GLES2 renderer into a LINEAR ARGB8888 dmabuf, import as an EGLImage -> sampled GL texture in the sibling RMLUi GLES 3.2 context (the slice-3 bridge run in reverse) and composite into an inside a ui surface — upright, color-correct. Public surface (ui.hpp): class Preview (source_uri/source_width/source_height/ refresh) + UiSubstrate::create_preview(wlr_scene_tree*) -> unique_ptr (nullptr if no GL path; never throws). Kernel-suite probes: ui_preview_import_is_dmabuf, ui_pixel(x,y). Clean four-resource teardown (URI reg, GL texture, EGLImage, dmabuf); refresh-after-source-destruction is UB (consumer drops Preview on unmap). kernel 42 cases/150 assertions green on build + build-asan (asan clean, no new suppressions). Edits confined to packages/kernel/. --- packages/kernel/src/server.cpp | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'packages/kernel/src/server.cpp') diff --git a/packages/kernel/src/server.cpp b/packages/kernel/src/server.cpp index a5f8365..b302c68 100644 --- a/packages/kernel/src/server.cpp +++ b/packages/kernel/src/server.cpp @@ -81,6 +81,14 @@ auto Server::ui_fence_sync_active() const -> bool { return impl_->substrate != nullptr && impl_->substrate->fence_sync_active(); } +auto Server::ui_preview_import_is_dmabuf() const -> bool { + return impl_->substrate != nullptr && impl_->substrate->preview_import_is_dmabuf(); +} + +auto Server::ui_pixel(int x, int y) const -> unsigned int { + return impl_->substrate != nullptr ? impl_->substrate->surface_pixel(x, y) : 0U; +} + void Server::ui_set_touch_override(UiTouchOverride ov) { if (impl_->substrate == nullptr) { return; @@ -104,6 +112,13 @@ auto PerExtensionUi::create_surface(const UiSurfaceSpec& spec) -> std::unique_pt return server_->substrate->create_surface(id_, parent, spec); } +auto PerExtensionUi::create_preview(wlr_scene_tree* source) -> std::unique_ptr { + if (server_->substrate == nullptr) { + return nullptr; + } + return server_->substrate->create_preview(source); +} + auto PerExtensionUi::available() const -> bool { return server_->substrate != nullptr && server_->substrate->available(); } -- cgit v1.2.3