Create shadow framebuffer

gpu.c

@@ -768,6 +768,19 @@ void gpu_init(gpu_ctx_t *ctx, GLFWwindow *window, const char *name)
 	assert(result == VK_SUCCESS);
 
 	// Create framebuffers
+	const VkFramebufferCreateInfo shadow_framebuffer_config = {
+		.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO,
+		.renderPass = ctx->shadow_pass,
+		.attachmentCount = 1,
+		.pAttachments = &ctx->shadow_view,
+		.width = SHADOW_IMG_SIZE,
+		.height = SHADOW_IMG_SIZE,
+		.layers = 1,
+	};
+	result = vkCreateFramebuffer(
+		ctx->dev, &shadow_framebuffer_config, nullptr,
+		&ctx->shadow_framebuf);
+	assert(result == VK_SUCCESS);
 	for (unsigned i = 0; i < ctx->swapchain_img_count; ++i) {
 		VkImageView attachments[] = {
 			ctx->swapchain_img_views[i],
@@ -885,6 +898,7 @@ void gpu_cleanup(const gpu_ctx_t *ctx)
 	vkDestroyImage(ctx->dev, ctx->depth_img, nullptr);
 	vkFreeMemory(ctx->dev, ctx->depth_mem, nullptr);
 
+	vkDestroyFramebuffer(ctx->dev, ctx->shadow_framebuf, nullptr);
 	for (unsigned i = 0; i < ctx->swapchain_img_count; ++i) {
 		vkDestroyFramebuffer(ctx->dev, ctx->framebuffers[i], nullptr);
 		vkDestroyImageView(ctx->dev, ctx->swapchain_img_views[i], nullptr);

gpu.h

@@ -25,6 +25,7 @@ typedef struct {
 	VkImage depth_img;
 	VkDeviceMemory depth_mem;
 	VkImageView depth_view;
+	VkFramebuffer shadow_framebuf;
 	VkFramebuffer framebuffers[MAX_FRAMES_IN_FLIGHT];
 	VkShaderModule floor_vert_shader;
 	VkShaderModule model_vert_shader;