feat: add OpenGL abstraction layer with RAII resources

- Replace window class with cbt::opengl::context - Add buffer resource (VBO, EBO, UBO, SSBO) with move semantics - Add texture resource with format/type enums and filtering - Add descriptor_set for Vulkan-style resource binding - All resources use RAII with proper cleanup
2026-05-05 21:58:34 +02:00
parent f18e5e4adc
commit 90d013695d
36 changed files with 2139 additions and 55 deletions
@@ -0,0 +1,105 @@
+# ==============================================================================
+# Find kfr
+# ==============================================================================
+# This module fetches the KFR DSP library.
+#
+# Targets provided:
+#   kfr::kfr - The kfr library target
+#
+# Variables set:
+#   kfr_FOUND       - TRUE if kfr is available
+#   kfr_LIBRARIES   - The kfr library target (kfr::kfr)
+#   kfr_INCLUDE_DIR - Include directories for kfr
+#   kfr_VERSION     - Version of kfr (if available)
+# ==============================================================================
+
+if (DEFINED _FINDKFR_INCLUDED)
+    return()
+endif()
+set(_FINDKFR_INCLUDED TRUE)
+
+# Use the version passed to find_package(), or default to 7.0.1
+if (DEFINED kfr_FIND_VERSION AND NOT kfr_FIND_VERSION STREQUAL "")
+    set(KFR_VERSION "${kfr_FIND_VERSION}")
+else()
+    set(KFR_VERSION "7.0.1")
+endif()
+
+message(STATUS "Fetching kfr ${KFR_VERSION}")
+
+include(FetchContent)
+
+find_program(GIT_EXECUTABLE git)
+if (GIT_EXECUTABLE)
+    set(KFR_FETCH_METHOD "GIT")
+else()
+    set(KFR_FETCH_METHOD "ZIP")
+endif()
+
+# Disable tests, examples, and other unnecessary components
+set(ENABLE_TESTS         OFF CACHE BOOL "" FORCE)
+set(ENABLE_EXAMPLES      OFF CACHE BOOL "" FORCE)
+set(KFR_ENABLE_ASMTEST   OFF CACHE BOOL "" FORCE)
+set(KFR_ENABLE_CAPI_BUILD OFF CACHE BOOL "" FORCE)
+set(KFR_INSTALL_HEADERS  OFF CACHE BOOL "" FORCE)
+set(KFR_INSTALL_LIBRARIES OFF CACHE BOOL "" FORCE)
+
+# Create dummy uninstall target to prevent KFR from creating one
+if (NOT TARGET uninstall)
+    add_custom_target(uninstall)
+endif()
+
+if (KFR_FETCH_METHOD STREQUAL "GIT")
+    FetchContent_Declare(
+        kfr
+        GIT_REPOSITORY https://github.com/kfrlib/kfr.git
+        GIT_TAG        ${KFR_VERSION}
+    )
+else()
+    FetchContent_Declare(
+        kfr
+        URL https://github.com/kfrlib/kfr/archive/refs/tags/${KFR_VERSION}.zip
+    )
+endif()
+
+FetchContent_MakeAvailable(kfr)
+
+# Fix KFR's redundant standard library linking
+# KFR explicitly links stdc++/pthread/m, but these are already linked by the compiler
+# On Windows with Clang: these Unix libraries don't exist
+# On macOS: stdc++ becomes c++ which duplicates the automatic libc++ linking
+if (TARGET kfr)
+    get_target_property(_kfr_link_libs kfr INTERFACE_LINK_LIBRARIES)
+    if (_kfr_link_libs)
+        list(REMOVE_ITEM _kfr_link_libs "stdc++" "c++" "pthread" "m")
+        set_target_properties(kfr PROPERTIES INTERFACE_LINK_LIBRARIES "${_kfr_link_libs}")
+    endif()
+endif()
+
+# Remove KFR's uninstall target
+if (TARGET uninstall)
+    set_target_properties(uninstall PROPERTIES EXCLUDE_FROM_ALL TRUE)
+endif()
+
+if (NOT TARGET kfr::kfr)
+    if (TARGET kfr)
+        add_library(kfr::kfr ALIAS kfr)
+    else()
+        message(FATAL_ERROR "Could not fetch kfr; no target kfr or kfr::kfr available")
+    endif()
+endif()
+
+set(kfr_FOUND        TRUE)
+set(kfr_LIBRARIES    kfr::kfr)
+set(kfr_VERSION      "${KFR_VERSION}")
+get_target_property(_kfr_inc kfr::kfr INTERFACE_INCLUDE_DIRECTORIES)
+set(kfr_INCLUDE_DIR  "${_kfr_inc}")
+
+# Mark kfr includes as SYSTEM to suppress warnings from its headers
+if (_kfr_inc AND TARGET kfr)
+    set_target_properties(kfr PROPERTIES
+        INTERFACE_SYSTEM_INCLUDE_DIRECTORIES "${_kfr_inc}"
+    )
+endif()
+
+set(KFR_LICENSE_FILE "${kfr_SOURCE_DIR}/LICENSE.txt" CACHE FILEPATH "Path to KFR license file")