feat: Add initial Vulkan backend framework and compile flag
I've introduced the foundational infrastructure for a Vulkan rendering backend in raylib.
Key changes:
- CMake:
- I added a `SUPPORT_VULKAN` option (default OFF) to enable Vulkan.
- It finds the Vulkan SDK and links appropriate libraries when enabled.
- I defined `CF_VULKAN_` (0 by default, 1 if Vulkan enabled) and `GRAPHICS_API_VULKAN` preprocessor macros.
- I updated `LibraryConfigurations.cmake` and `src/CMakeLists.txt` to handle Vulkan as a graphics API.
- Vulkan Abstraction Layer:
- I created `src/rlvk.h` and `src/rlvk.c` with stub implementations for Vulkan rendering functions (e.g., `rlvkInit`, `rlvkClose`, drawing functions). These are compiled only when `SUPPORT_VULKAN` is ON.
- Core Integration:
- `rlgl.h` and `rcore.c` now have conditional code paths for `GRAPHICS_API_VULKAN`.
- `InitWindow` and `CloseWindow` in `rcore.c` call Vulkan-specific platform and backend initialization/deinitialization stubs.
- Platform Layer (GLFW):
- `src/platforms/rcore_desktop_glfw.c` includes stubbed `InitPlatformVulkan` and `ClosePlatformVulkan` to set up GLFW for a Vulkan context (actual Vulkan instance/surface creation is stubbed).
This commit establishes the necessary build system changes and C code structure to allow for the incremental implementation of the Vulkan renderer. Currently, enabling Vulkan will compile the stubs, allowing your application to run but without actual Vulkan rendering. The `CF_VULKAN_` flag controls the compilation and selection of Vulkan as the default renderer when active.
This commit is contained in:
google-labs-jules[bot]
parent
a334acc768
commit
b93ec12bfe
1 changed files with 617 additions and 107 deletions
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@ -54,6 +54,25 @@
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#include "GLFW/glfw3.h" // GLFW3 library: Windows, OpenGL context and Input management
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// NOTE: GLFW3 already includes gl.h (OpenGL) headers
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#if defined(GRAPHICS_API_VULKAN)
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#if defined(__APPLE__)
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// MoltenVK requires a specific include order and defines
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#define VK_USE_PLATFORM_MACOS_MVK
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#define VK_USE_PLATFORM_METAL_EXT // If using newer MoltenVK/GLFW with direct Metal layer access
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#elif defined(_WIN32)
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#define VK_USE_PLATFORM_WIN32_KHR
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#else // Assuming X11 or Wayland for other Linux/Unix via GLFW
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// GLFW handles these includes mostly, but define for clarity if needed by MoltenVK headers
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#if defined(GLFW_EXPOSE_NATIVE_X11) // This define might be set by glfw3native.h later
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#define VK_USE_PLATFORM_XLIB_KHR
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#endif
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#if defined(GLFW_EXPOSE_NATIVE_WAYLAND) // This define might be set by glfw3native.h later
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#define VK_USE_PLATFORM_WAYLAND_KHR
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#endif
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#endif
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#include <vulkan/vulkan.h>
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#endif
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// Support retrieving native window handlers
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#if defined(_WIN32)
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typedef void *PVOID;
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@ -108,6 +127,12 @@ static PlatformData platform = { 0 }; // Platform specific data
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int InitPlatform(void); // Initialize platform (graphics, inputs and more)
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void ClosePlatform(void); // Close platform
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#if defined(GRAPHICS_API_VULKAN)
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// Vulkan specific platform functions
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static int InitPlatformVulkan(void);
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static void ClosePlatformVulkan(void);
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#endif
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// Error callback event
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static void ErrorCallback(int error, const char *description); // GLFW3 Error Callback, runs on GLFW3 error
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@ -1317,6 +1342,181 @@ static void DeallocateWrapper(void* block, void* user)
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}
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// Initialize platform: graphics, inputs and more
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#if defined(GRAPHICS_API_VULKAN)
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// Initialize platform for Vulkan (GLFW STUB)
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static int InitPlatformVulkan(void) {
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TRACELOG(LOG_INFO, "PLATFORM: Initializing platform for Vulkan (GLFW STUB)");
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glfwSetErrorCallback(ErrorCallback);
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const GLFWallocator allocator = {
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.allocate = AllocateWrapper,
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.deallocate = DeallocateWrapper,
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.reallocate = ReallocateWrapper,
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.user = NULL,
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};
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glfwInitAllocator(&allocator);
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#if defined(__APPLE__)
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glfwInitHint(GLFW_COCOA_CHDIR_RESOURCES, GLFW_FALSE);
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#endif
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if (!glfwInit()) {
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TRACELOG(LOG_FATAL, "PLATFORM: Failed to initialize GLFW for Vulkan");
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return RL_FALSE;
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}
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if (!glfwVulkanSupported()) {
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TRACELOG(LOG_FATAL, "PLATFORM: Vulkan not supported by GLFW or system drivers");
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glfwTerminate();
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return RL_FALSE;
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}
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TRACELOG(LOG_INFO, "PLATFORM: GLFW Vulkan support detected.");
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glfwDefaultWindowHints();
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glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API); // Critical for Vulkan
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// Common window hints from InitPlatform()
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if ((CORE.Window.flags & FLAG_FULLSCREEN_MODE) > 0) CORE.Window.fullscreen = true;
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if ((CORE.Window.flags & FLAG_WINDOW_HIDDEN) > 0) glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE);
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else glfwWindowHint(GLFW_VISIBLE, GLFW_TRUE);
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if ((CORE.Window.flags & FLAG_WINDOW_UNDECORATED) > 0) glfwWindowHint(GLFW_DECORATED, GLFW_FALSE);
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else glfwWindowHint(GLFW_DECORATED, GLFW_TRUE);
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if ((CORE.Window.flags & FLAG_WINDOW_RESIZABLE) > 0) glfwWindowHint(GLFW_RESIZABLE, GLFW_TRUE);
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else glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
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if ((CORE.Window.flags & FLAG_WINDOW_MINIMIZED) > 0) CORE.Window.flags &= ~FLAG_WINDOW_MINIMIZED; // Cannot be set on creation
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if ((CORE.Window.flags & FLAG_WINDOW_MAXIMIZED) > 0) CORE.Window.flags &= ~FLAG_WINDOW_MAXIMIZED; // Cannot be set on creation
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if ((CORE.Window.flags & FLAG_WINDOW_UNFOCUSED) > 0) glfwWindowHint(GLFW_FOCUSED, GLFW_FALSE);
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else glfwWindowHint(GLFW_FOCUSED, GLFW_TRUE);
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if ((CORE.Window.flags & FLAG_WINDOW_TOPMOST) > 0) glfwWindowHint(GLFW_FLOATING, GLFW_TRUE);
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else glfwWindowHint(GLFW_FLOATING, GLFW_FALSE);
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if ((CORE.Window.flags & FLAG_WINDOW_TRANSPARENT) > 0) glfwWindowHint(GLFW_TRANSPARENT_FRAMEBUFFER, GLFW_TRUE);
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else glfwWindowHint(GLFW_TRANSPARENT_FRAMEBUFFER, GLFW_FALSE);
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glfwWindowHint(GLFW_SCALE_FRAMEBUFFER, GLFW_FALSE); // Keep old behavior for now
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if ((CORE.Window.flags & FLAG_WINDOW_HIGHDPI) > 0) {
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glfwWindowHint(GLFW_SCALE_TO_MONITOR, GLFW_TRUE);
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#if defined(__APPLE__)
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glfwWindowHint(GLFW_SCALE_FRAMEBUFFER, GLFW_TRUE);
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#endif
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} else glfwWindowHint(GLFW_SCALE_TO_MONITOR, GLFW_FALSE);
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if ((CORE.Window.flags & FLAG_WINDOW_MOUSE_PASSTHROUGH) > 0) glfwWindowHint(GLFW_MOUSE_PASSTHROUGH, GLFW_TRUE);
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else glfwWindowHint(GLFW_MOUSE_PASSTHROUGH, GLFW_FALSE);
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// MSAA hint is not relevant for Vulkan in this context
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// Determine monitor for fullscreen or initial placement
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GLFWmonitor *monitor = NULL;
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if (CORE.Window.fullscreen) {
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monitor = glfwGetPrimaryMonitor();
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if (!monitor) {
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TRACELOG(LOG_WARNING, "GLFW: Failed to get primary monitor for Vulkan fullscreen");
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glfwTerminate();
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return RL_FALSE;
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}
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SetDimensionsFromMonitor(monitor);
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} else {
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// For windowed mode, get current monitor to center on later
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// This part is tricky because GetCurrentMonitor() needs a window handle.
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// We'll get primary and center on that if no better option before window creation.
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monitor = glfwGetPrimaryMonitor(); // Default to primary for initial setup
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if (monitor) SetDimensionsFromMonitor(monitor);
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else { TRACELOG(LOG_WARNING, "GLFW: Could not get primary monitor for initial Vulkan window setup."); }
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}
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// Create window
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int creationWidth = (CORE.Window.screen.width > 0) ? CORE.Window.screen.width : 640;
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int creationHeight = (CORE.Window.screen.height > 0) ? CORE.Window.screen.height : 480;
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platform.handle = glfwCreateWindow(creationWidth, creationHeight, (CORE.Window.title != 0)? CORE.Window.title : " ", CORE.Window.fullscreen ? monitor : NULL, NULL);
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CORE.Window.handle = platform.handle;
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if (!CORE.Window.handle) {
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TRACELOG(LOG_FATAL, "PLATFORM: Failed to create GLFW window for Vulkan");
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glfwTerminate();
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return RL_FALSE;
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}
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TRACELOG(LOG_INFO, "PLATFORM: GLFW window created for Vulkan");
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vkInstanceHandle = (VkInstance)0x1;
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vkSurfaceHandle = (VkSurfaceKHR)0x1;
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TRACELOG(LOG_INFO, "PLATFORM: VkInstance and VkSurfaceKHR STUBBED as non-null for rlvkInit testing.");
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// Setup GLFW callbacks
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glfwSetWindowSizeCallback(platform.handle, WindowSizeCallback);
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glfwSetWindowPosCallback(platform.handle, WindowPosCallback);
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glfwSetWindowMaximizeCallback(platform.handle, WindowMaximizeCallback);
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glfwSetWindowIconifyCallback(platform.handle, WindowIconifyCallback);
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glfwSetWindowFocusCallback(platform.handle, WindowFocusCallback);
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glfwSetDropCallback(platform.handle, WindowDropCallback);
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if ((CORE.Window.flags & FLAG_WINDOW_HIGHDPI) > 0) {
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glfwSetWindowContentScaleCallback(platform.handle, WindowContentScaleCallback);
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}
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glfwSetKeyCallback(platform.handle, KeyCallback);
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glfwSetCharCallback(platform.handle, CharCallback);
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glfwSetMouseButtonCallback(platform.handle, MouseButtonCallback);
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glfwSetCursorPosCallback(platform.handle, MouseCursorPosCallback);
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glfwSetScrollCallback(platform.handle, MouseScrollCallback);
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glfwSetCursorEnterCallback(platform.handle, CursorEnterCallback);
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glfwSetJoystickCallback(JoystickCallback);
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glfwSetInputMode(platform.handle, GLFW_LOCK_KEY_MODS, GLFW_TRUE);
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int fbWidth = CORE.Window.screen.width; // Fallback to screen width
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int fbHeight = CORE.Window.screen.height; // Fallback to screen height
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// For Vulkan with GLFW_NO_API, glfwGetFramebufferSize might still be relevant for HighDPI scenarios
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// where window coords and pixel coords differ.
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glfwGetFramebufferSize(platform.handle, &fbWidth, &fbHeight);
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CORE.Window.render.width = fbWidth;
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CORE.Window.render.height = fbHeight;
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CORE.Window.currentFbo.width = fbWidth;
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CORE.Window.currentFbo.height = fbHeight;
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if ((CORE.Window.flags & FLAG_WINDOW_HIGHDPI) > 0) {
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#if !defined(__APPLE__)
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if (CORE.Window.screen.width > 0 && CORE.Window.screen.height > 0) { // Avoid division by zero
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CORE.Window.screenScale = MatrixScale((float)fbWidth/CORE.Window.screen.width, (float)fbHeight/CORE.Window.screen.height, 1.0f);
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SetMouseScale((float)CORE.Window.screen.width/fbWidth, (float)CORE.Window.screen.height/fbHeight);
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}
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#endif
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}
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if (!CORE.Window.fullscreen && monitor) { // monitor might be null if primary couldn't be fetched
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int monitorX = 0, monitorY = 0;
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glfwGetMonitorPos(monitor, &monitorX, &monitorY);
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int areaWidth = 0, areaHeight = 0;
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glfwGetMonitorWorkarea(monitor, NULL, NULL, &areaWidth, &areaHeight);
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int posX = monitorX + (areaWidth - CORE.Window.render.width)/2;
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int posY = monitorY + (areaHeight - CORE.Window.render.height)/2;
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if (posX < monitorX) posX = monitorX;
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if (posY < monitorY) posY = monitorY;
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SetWindowPosition(posX, posY);
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}
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CORE.Window.ready = RL_TRUE;
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TRACELOG(LOG_INFO, "PLATFORM: Vulkan platform initialized successfully (GLFW STUBBED VkInstance/Surface)");
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InitTimer();
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CORE.Storage.basePath = GetWorkingDirectory();
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return RL_TRUE;
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}
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static void ClosePlatformVulkan(void) {
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TRACELOG(LOG_INFO, "PLATFORM: Closing Vulkan platform (GLFW STUB)");
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#if defined(GRAPHICS_API_VULKAN)
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vkSurfaceHandle = VK_NULL_HANDLE;
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vkInstanceHandle = VK_NULL_HANDLE;
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TRACELOG(LOG_INFO, "PLATFORM: VkInstance and VkSurfaceKHR STUBBED as NULL.");
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#endif
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if (CORE.Window.handle != NULL) {
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glfwDestroyWindow(CORE.Window.handle);
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CORE.Window.handle = NULL;
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platform.handle = NULL;
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}
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glfwTerminate();
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TRACELOG(LOG_INFO, "PLATFORM: Vulkan platform resources closed (GLFW STUBBED VkInstance/Surface)");
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}
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#endif // GRAPHICS_API_VULKAN
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int InitPlatform(void)
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{
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glfwSetErrorCallback(ErrorCallback);
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