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 +1,104 @@
+# ==============================================================================
+# Find Vulkan
+# ==============================================================================
+# This module finds a locally installed Vulkan SDK.
+#
+# Targets provided:
+#   vulkan::vulkan - The Vulkan library target
+#
+# Variables set:
+#   Vulkan_FOUND       - TRUE if Vulkan is available
+#   Vulkan_LIBRARIES   - The Vulkan library target (Vulkan::Vulkan)
+#   Vulkan_INCLUDE_DIR - Include directory for Vulkan headers
+#   Vulkan_VERSION     - Version of the found Vulkan SDK
+# ==============================================================================
+
+if (DEFINED _FINDVULKAN_INCLUDED)
+    return()
+endif()
+set(_FINDVULKAN_INCLUDED TRUE)
+
+# detect_vulkan_sdk(<out_inc> <out_lib> <out_ver>)
+#
+# Detects the Vulkan SDK root and sets the include path, lib path, and version.
+# Search order:
+#   1. VULKAN_SDK environment variable  (all platforms)
+#   2. C:/VulkanSDK/<latest>            (Windows fallback)
+#   3. /usr                             (Linux system packages)
+#
+# Parameters:
+#   - OUT_INC  Name of the variable to set with the SDK include path
+#   - OUT_LIB  Name of the variable to set with the SDK lib path
+#   - OUT_VER  Name of the variable to set with the SDK version string
+function(detect_vulkan_sdk OUT_INC OUT_LIB OUT_VER)
+    # 1. VULKAN_SDK env var (set by the LunarG installer on all platforms)
+    if (DEFINED ENV{VULKAN_SDK})
+        set(_ROOT "$ENV{VULKAN_SDK}")
+        # The env var already points inside the versioned dir on all platforms
+        # e.g. C:/VulkanSDK/1.4.335.0  or  ~/VulkanSDK/1.4.xxx/x86_64
+        set(${OUT_VER} "env"              PARENT_SCOPE)
+        set(${OUT_INC} "${_ROOT}/Include" PARENT_SCOPE)  # Windows
+        set(${OUT_LIB} "${_ROOT}/Lib"     PARENT_SCOPE)  # Windows
+        # On Linux/macOS the SDK uses lowercase paths
+        if (NOT WIN32)
+            set(${OUT_INC} "${_ROOT}/include" PARENT_SCOPE)
+            set(${OUT_LIB} "${_ROOT}/lib"     PARENT_SCOPE)
+        endif()
+        return()
+    endif()
+
+    # 2. Windows: scan C:/VulkanSDK for latest version directory
+    if (WIN32)
+        set(_ROOT "C:/VulkanSDK")
+        file(GLOB _VERSIONS RELATIVE "${_ROOT}" "${_ROOT}/*")
+        list(SORT _VERSIONS ORDER DESCENDING)
+        list(GET _VERSIONS 0 _VERSION)
+        set(${OUT_VER} "${_VERSION}"                  PARENT_SCOPE)
+        set(${OUT_INC} "${_ROOT}/${_VERSION}/Include" PARENT_SCOPE)
+        set(${OUT_LIB} "${_ROOT}/${_VERSION}/Lib"     PARENT_SCOPE)
+        return()
+    endif()
+
+    # 3. Linux/macOS: fall back to system paths
+    set(${OUT_VER} "system"       PARENT_SCOPE)
+    set(${OUT_INC} "/usr/include" PARENT_SCOPE)
+    set(${OUT_LIB} "/usr/lib"     PARENT_SCOPE)
+endfunction()
+
+detect_vulkan_sdk(_Vulkan_INC _Vulkan_LIB Vulkan_VERSION)
+message(STATUS "Vulkan SDK: ${Vulkan_VERSION}")
+
+# Library name differs by platform
+if (WIN32)
+    set(_Vulkan_LIB_NAME "vulkan-1")
+else()
+    set(_Vulkan_LIB_NAME "vulkan")
+endif()
+
+find_library(_Vulkan_LIBRARY ${_Vulkan_LIB_NAME} HINTS "${_Vulkan_LIB}")
+
+if (NOT _Vulkan_LIBRARY)
+    if (Vulkan_FIND_REQUIRED)
+        message(FATAL_ERROR "Could not find ${_Vulkan_LIB_NAME} in ${_Vulkan_LIB}")
+    else()
+        message(STATUS "  [ ] Vulkan (${_Vulkan_LIB_NAME})")
+        return()
+    endif()
+endif()
+
+message(STATUS "  [x] Vulkan (${_Vulkan_LIBRARY})")
+
+if (NOT TARGET vulkan::vulkan)
+    add_library(vulkan::vulkan UNKNOWN IMPORTED)
+    set_target_properties(vulkan::vulkan PROPERTIES
+        IMPORTED_LOCATION                    "${_Vulkan_LIBRARY}"
+        INTERFACE_INCLUDE_DIRECTORIES        "${_Vulkan_INC}"
+        INTERFACE_SYSTEM_INCLUDE_DIRECTORIES "${_Vulkan_INC}"
+    )
+endif()
+
+set(Vulkan_FOUND       TRUE)
+set(Vulkan_LIBRARIES   Vulkan::Vulkan)
+set(Vulkan_INCLUDE_DIR "${_Vulkan_INC}")
+
+unset(_Vulkan_LIBRARY CACHE)