ld58/code/first.c

#include <stdio.h>
#include <stdbool.h>
#include <SDL3/SDL.h>

#define STB_IMAGE_IMPLEMENTATION 1
#include <stb_image.h>

#include "core/core.h"
#include "core/types.h"
#include "os/core.h"

#include "vulkan/core.h"
#include "game/core.h"

int main(int argc, char **argv) {
	(void) argc;
	(void) argv;

	if (!SDL_Init(SDL_INIT_VIDEO))
	{
		printf("[Error] :: Failed to initialise SDL3 (%s)\n", SDL_GetError());
		return 1;
	}

	SDL_Window *window = SDL_CreateWindow("Ludum", 1280, 720, SDL_WINDOW_HIGH_PIXEL_DENSITY);
	if (!window)
	{
		printf("[Error] :: Failed to create window (%s)\n", SDL_GetError());
		return 1;
	}

	Vk_Setup(window);

	G_State *game = 0;
	{
		M_Arena *arena = M_ArenaAlloc(GB(64), .initial = MB(4));
		game = M_ArenaPush(arena, G_State);

		game->arena = arena;

		G_ImagesLoad(game);
		G_PipelinesLoad(game);

		Vk_Buffer *vbo = &game->vbo;
		vbo->size         = KB(4096);
		vbo->usage        = VK_BUFFER_USAGE_STORAGE_BUFFER_BIT;
		vbo->host_visible = true;

		Vk_BufferCreate(vbo);

		G_Vertex *vertices = cast(G_Vertex *) vbo->data;

		vertices[0] = (G_Vertex) { -0.25f, -0.25f, 1.0f, 1.0f, 0.0f, 0.0f, 0xFFFFFFFF, 0};
		vertices[1] = (G_Vertex) {  0.25f, -0.25f, 1.0f, 1.0f, 1.0f, 0.0f, 0xFFFFFFFF, 0};
		vertices[2] = (G_Vertex) { -0.25f,  0.25f, 1.0f, 1.0f, 0.0f, 1.0f, 0xFFFFFFFF, 0};

		vertices[3] = (G_Vertex) {  0.25f, -0.25f, 1.0f, 1.0f, 1.0f, 0.0f, 0xFFFFFFFF, 0};
		vertices[4] = (G_Vertex) {  0.25f,  0.25f, 1.0f, 1.0f, 1.0f, 1.0f, 0xFFFFFFFF, 0};
		vertices[5] = (G_Vertex) { -0.25f,  0.25f, 1.0f, 1.0f, 0.0f, 1.0f, 0xFFFFFFFF, 0};
	}

	bool running = true;
	Player player;
	player.pos.x = 0;
	player.pos.y = 0;
	while (running)
	{
		SDL_Event e;
		while (SDL_PollEvent(&e))
		{
			PlayerUpdate(&e, &player);
			if (e.type == SDL_EVENT_QUIT)
			{
				running = false;
			}
		}


		int w, h;
		SDL_GetWindowSizeInPixels(window, &w, &h);

		Vk_Frame *frame = Vk_FrameBegin(window);
		VkCommandBuffer cmd = frame->cmd;

		VkClearValue clear_colour;
		clear_colour.color.float32[0] = 1.0f;
		clear_colour.color.float32[1] = 0.0f;
		clear_colour.color.float32[2] = 0.0f;
		clear_colour.color.float32[3] = 1.0f;

		VkRenderingAttachmentInfo colour_attachment = {0};
		colour_attachment.sType = VK_STRUCTURE_TYPE_RENDERING_ATTACHMENT_INFO;
		colour_attachment.imageView = vk.swapchain.views[frame->image];
		colour_attachment.imageLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
		colour_attachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
		colour_attachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
		colour_attachment.clearValue = clear_colour;

		VkRenderingInfo rendering_info = {0};
		rendering_info.sType = VK_STRUCTURE_TYPE_RENDERING_INFO;
		rendering_info.renderArea = (VkRect2D){0, 0, w, h};
		rendering_info.layerCount = 1;
		rendering_info.colorAttachmentCount = 1;
		rendering_info.pColorAttachments = &colour_attachment;

		vk.CmdBeginRendering(cmd, &rendering_info);

		Vk_Pipeline *basic = &game->pipelines[0];

		VkDescriptorSet set;
		VkDescriptorSetAllocateInfo alloc_info = { 0 };
		alloc_info.sType              = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
		alloc_info.descriptorPool     = frame->descriptors;
		alloc_info.descriptorSetCount = 1;
		alloc_info.pSetLayouts        = &basic->layout.set;

		vk.AllocateDescriptorSets(vk.device, &alloc_info, &set);

		// 'update' the descriptor sets for binding
		{
			VkWriteDescriptorSet writes[2] = { 0 };

			VkDescriptorBufferInfo vbo_info = { 0 };
			vbo_info.buffer = game->vbo.handle;
			vbo_info.offset = 0;
			vbo_info.range  = 256;

			VkDescriptorImageInfo image_info = { 0 };
			image_info.imageView   = game->images[6].image.view;
			image_info.sampler     = vk.sampler;
			image_info.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;

			writes[0].sType           = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
			writes[0].dstSet          = set;
			writes[0].dstBinding      = 0;
			writes[0].descriptorCount = 1;
			writes[0].descriptorType  = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER;
			writes[0].pBufferInfo     = &vbo_info;

			writes[1].sType           = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
			writes[1].dstSet          = set;
			writes[1].dstBinding      = 1;
			writes[1].descriptorCount = 1;
			writes[1].descriptorType  = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
			writes[1].pImageInfo      = &image_info;

			vk.UpdateDescriptorSets(vk.device, ArraySize(writes), writes, 0, 0);
		}

		vk.CmdBindPipeline(cmd, VK_PIPELINE_BIND_POINT_GRAPHICS, basic->handle);
		vk.CmdBindDescriptorSets(cmd, VK_PIPELINE_BIND_POINT_GRAPHICS, basic->layout.pipeline, 0, 1, &set, 0, 0);

		VkViewport viewport = { 0, 0, (F32) w, (F32) h, 0.0f, 1.0f };
		VkRect2D   scissor  = { 0, 0, w, h };

		vk.CmdSetViewport(cmd, 0, 1, &viewport);
		vk.CmdSetScissor(cmd, 0, 1, &scissor);

		vk.CmdDraw(cmd, 6, 1, 0, 0);

		vk.CmdEndRendering(cmd);


		Vk_FrameEnd();
	}

	SDL_DestroyWindow(window);
	SDL_Quit();

	return 0;
}

#include "core/core.c"
#include "os/core.c"
#include "vulkan/core.c"
#include "game/core.c"