1 files changed, 118 insertions, 0 deletions
diff --git a/src/render/backends/vulkan/backend_vulkan.h b/src/render/backends/vulkan/backend_vulkan.h
new file mode 100644
index 0000000..6ca0bb5
--- /dev/null
+++ b/src/render/backends/vulkan/backend_vulkan.h
@@ -0,0 +1,118 @@
+#pragma once
+#include "defines.h"
+#if defined(CEL_REND_BACKEND_VULKAN)
+#include <vulkan/vk_platform.h>
+#include <vulkan/vulkan.h>
+#include <vulkan/vulkan_core.h>
+
+#include "mem.h"
+#include "ral.h"
+#include "ral_types.h"
+
+#define MAX_FRAMES_IN_FLIGHT 2
+#define GPU_SWAPCHAIN_IMG_COUNT 2
+
+/*
+Conventions:
+  - Place the 'handle' as the first field of a struct
+  - Vulkan specific data goes at the top, followed by our internal data
+*/
+
+typedef struct queue_family_indices {
+  u32 graphics_family_index;
+  u32 present_family_index;
+  u32 compute_family_index;
+  u32 transfer_family_index;
+  bool has_graphics;
+  bool has_present;
+  bool has_compute;
+  bool has_transfer;
+} queue_family_indices;
+
+// typedef struct vulkan_framebuffer {
+// } vulkan_framebuffer;
+
+typedef struct gpu_swapchain {
+  VkSwapchainKHR handle;
+  arena swapchain_arena;
+  VkExtent2D extent;
+  u32x2 dimensions;
+  VkSurfaceFormatKHR image_format;
+  VkPresentModeKHR present_mode;
+  u32 image_count;
+  VkImage* images;
+  VkImageView* image_views;
+} gpu_swapchain;
+
+typedef struct gpu_device {
+  // In Vulkan we store both physical and logical device here
+  VkPhysicalDevice physical_device;
+  VkDevice logical_device;
+  VkPhysicalDeviceProperties properties;
+  VkPhysicalDeviceFeatures features;
+  VkPhysicalDeviceMemoryProperties memory;
+  queue_family_indices queue_family_indicies;
+  VkQueue graphics_queue;
+  VkQueue present_queue;
+  VkQueue compute_queue;
+  VkQueue transfer_queue;
+  VkCommandPool pool;
+} gpu_device;
+
+typedef struct gpu_pipeline_layout {
+  VkPipelineLayout handle;
+} gpu_pipeline_layout;
+
+typedef struct desc_set_uniform_buffer {
+  VkBuffer buffers[MAX_FRAMES_IN_FLIGHT];
+  VkDeviceMemory uniform_buf_memorys[MAX_FRAMES_IN_FLIGHT];
+  void* uniform_buf_mem_mappings[MAX_FRAMES_IN_FLIGHT];
+  size_t size;
+} desc_set_uniform_buffer;
+
+typedef struct gpu_pipeline {
+  VkPipeline handle;
+  VkPipelineLayout layout_handle;
+
+  // Descriptor gubbins
+  shader_data data_layouts[MAX_SHADER_DATA_LAYOUTS];
+  u32 data_layouts_count;
+
+  VkDescriptorSetLayout* desc_set_layouts;
+  // Based on group, we know which data to load
+  desc_set_uniform_buffer* uniform_pointers;
+  u32 desc_set_layouts_count;
+
+} gpu_pipeline;
+
+typedef struct gpu_renderpass {
+  VkRenderPass handle;
+  // TODO: Where to store framebuffers? VkFramebuffer framebuffers[GPU_SWAPCHAIN_IMG_COUNT];
+} gpu_renderpass;
+
+typedef struct gpu_cmd_encoder {
+  VkCommandBuffer cmd_buffer;
+  VkDescriptorPool descriptor_pool;
+  gpu_pipeline* pipeline;
+} gpu_cmd_encoder;
+
+typedef struct gpu_cmd_buffer {
+  VkCommandBuffer cmd_buffer;
+} gpu_cmd_buffer;
+
+typedef struct gpu_buffer {
+  VkBuffer handle;
+  VkDeviceMemory memory;
+  u64 size;
+} gpu_buffer;
+
+typedef struct gpu_texture {
+  VkImage handle;
+  VkDeviceMemory memory;
+  u64 size;
+  texture_desc desc;
+  VkImageView view;
+  VkSampler sampler;
+  char* debug_label;
+} gpu_texture;
+#endif
+\ No newline at end of file