Implement vulkan backend

justfile

@@ -3,9 +3,28 @@
 
 default: build
 
-# Build the project
+CC       := "clang"
+CXX      := "clang++"
+VK_FLAGS := "-DVK_NO_PROTOTYPES -I$VULKAN_SDK/include -I$VULKAN_SDK/include/vma"
+BUILDDIR := "build"
+
+# Build the project (object files only — no entry point yet)
 build:
-	@echo "TODO: implement build"
+	mkdir -p {{BUILDDIR}}
+	{{CXX}} -g -c -Wno-nullability-completeness {{VK_FLAGS}} \
+		src/prism/rhi/vulkan/profiles/vulkan_profiles.cpp \
+		-o {{BUILDDIR}}/vulkan_profiles.o
+	{{CXX}} -g -c -Wno-nullability-completeness {{VK_FLAGS}} \
+		src/prism/rhi/vulkan/pr_rhi_vk_vma.cpp \
+		-o {{BUILDDIR}}/pr_rhi_vk_vma.o
+	{{CC}} -g -c {{VK_FLAGS}} $VULKAN_SDK/include/volk/volk.c -o {{BUILDDIR}}/volk.o
+	{{CC}} -g -c {{VK_FLAGS}} src/prism/rhi/vulkan/pr_rhi_vk.c -o {{BUILDDIR}}/pr_rhi_vk.o
+	{{CC}} -g -c src/wapp/wapp.c -o {{BUILDDIR}}/wapp.o
+	@echo "--- build done (objects in {{BUILDDIR}}/) ---"
+
+# Clean object files
+clean:
+	rm -rf {{BUILDDIR}}
 
 # Run linter / typecheck
 lint:

src/prism/rhi/vulkan/pr_rhi_vk.h

@@ -27,6 +27,8 @@ struct PrRhiDevice {
 	void   *handle;  // VkDevice
 	void   *queue;   // VkQueue
 	u32     queue_family_index;
+	u32     present_mode;  // VkPresentModeKHR
+	void   *physical_device;  // VkPhysicalDevice
 	void   *allocator;  // VmaAllocator
 };
 
@@ -37,12 +39,14 @@ struct PrRhiSurface {
 struct PrRhiSwapchain {
 	PrRhiDevice    *device;
 	void           *handle;  // VkSwapchainKHR
+	void           *surface;  // PrRhiSurface *
 	u32             image_count;
 	PrRhiTexture  **images;
 	PrRhiTexture   *depth;
 	u32             format;  // VkFormat
 	u32             width;
 	u32             height;
+	u32             current_image_index;
 };
 
 struct PrRhiBuffer {
@@ -57,6 +61,9 @@ struct PrRhiTexture {
 	void *image;  // VkImage
 	void *view;   // VkImageView
 	void *allocation;  // VmaAllocation
+	u32   width;
+	u32   height;
+	u32   format;  // VkFormat
 };
 
 struct PrRhiSampler {

src/prism/rhi/vulkan/pr_rhi_vk_aliases.h

@@ -12,6 +12,7 @@
 #define prRhiGetPhysicalDeviceDriverInfo   prRhiGetPhysicalDeviceDriverInfoVk
 #define prRhiCreateSurface                 prRhiCreateSurfaceVk
 #define prRhiDestroySurface                prRhiDestroySurfaceVk
+#define prRhiGetSurfaceCapabilities        prRhiGetSurfaceCapabilitiesVk
 #define prRhiCreateDevice                  prRhiCreateDeviceVk
 #define prRhiDestroyDevice                 prRhiDestroyDeviceVk
 #define prRhiDeviceWaitIdle                prRhiDeviceWaitIdleVk

src/prism/rhi/vulkan/pr_rhi_vk_vma.cpp

@@ -0,0 +1,2 @@
+#define VMA_IMPLEMENTATION
+#include <vk_mem_alloc.h>