Scaffold experimental wgpu viewer backend

Adds src/ifcviewer-wgpu/ and src/ifcviewer-wgpu-minimal/ behind a new BUILD_BONSAIVIEWER_WGPU option (default OFF), gated independently of BUILD_BONSAIVIEWER. Stage 1 brings up a Qt window with a wgpu-native v29 surface (X11) and clears to the background colour — no rendering beyond that yet. Mirrors the lifecycle of the GL ViewportWindow so subsequent stages (vertex-pulling renderer, pick, cull, HiZ, overlay) slot in without restructuring the host. wgpu-native is fetched as a pre-built binary release via FetchContent; its .so SONAME is patched in at configure time so dependents get a clean DT_NEEDED. The X11 native handle is obtained via the public QNativeInterface::QX11Application API; Wayland and macOS/Windows surface creation are stubbed with explicit "not wired yet" warnings. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-10-03 21:38:12 +00:00 · 2026-05-27 12:23:23 +10:00
parent dd902bf0f8
commit 19a39a0413
6 changed files with 702 additions and 0 deletions
@@ -0,0 +1,49 @@
+################################################################################
+#                                                                              #
+# This file is part of IfcOpenShell.                                           #
+#                                                                              #
+# IfcOpenShell is free software: you can redistribute it and/or modify         #
+# it under the terms of the Lesser GNU General Public License as published by  #
+# the Free Software Foundation, either version 3.0 of the License, or          #
+# (at your option) any later version.                                          #
+#                                                                              #
+# IfcOpenShell is distributed in the hope that it will be useful,              #
+# but WITHOUT ANY WARRANTY; without even the implied warranty of               #
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the                 #
+# Lesser GNU General Public License for more details.                          #
+#                                                                              #
+# You should have received a copy of the Lesser GNU General Public License     #
+# along with this program. If not, see <http://www.gnu.org/licenses/>.         #
+#                                                                              #
+################################################################################
+
+message("Running CMakeLists.txt in /src/ifcviewer-wgpu-minimal")
+
+find_package(Qt${QT_VERSION} COMPONENTS Widgets REQUIRED PATHS ${QT_DIR})
+
+file(GLOB IFCVIEWER_WGPU_MIN_CPP_FILES ${CMAKE_CURRENT_SOURCE_DIR}/*.cpp)
+
+add_executable(IfcViewerWgpuMinimal ${IFCVIEWER_WGPU_MIN_CPP_FILES})
+
+set_target_properties(IfcViewerWgpuMinimal PROPERTIES
+    AUTOMOC ON
+    WIN32_EXECUTABLE ON
+    MACOSX_BUNDLE ON
+)
+
+target_link_libraries(IfcViewerWgpuMinimal PRIVATE
+    IfcViewerWgpu
+    Qt${QT_VERSION}::Widgets
+)
+
+# Pin the build-tree rpath so the executable finds libwgpu_native.so when
+# run directly out of build-viewer-wgpu/. The patched SONAME means DT_NEEDED
+# is just the basename, so a single rpath entry suffices.
+if(UNIX AND NOT APPLE AND WGPU_NATIVE_LIB_DIR)
+    set_target_properties(IfcViewerWgpuMinimal PROPERTIES
+        BUILD_RPATH "${WGPU_NATIVE_LIB_DIR}"
+    )
+endif()
+
+install(TARGETS IfcViewerWgpuMinimal EXPORT ${IFCOPENSHELL_EXPORT_TARGETS})
+ifcopenshell_deploy_qt_runtime(IfcViewerWgpuMinimal)