[vulkan] Implement window resize support

There's a problem with screenshot capture in that the image is sheared
after window resize, but the screen view looks good, and vulkan is happy
with the state changes.

include/QF/Vulkan/qf_renderpass.h

@@ -44,6 +44,7 @@ typedef struct qfv_renderpass_s {
 	struct qfv_imageset_s *attachment_images;
 	struct qfv_imageviewset_s *attachment_views;
 	VkDeviceMemory attachmentMemory;
+	size_t attachmentMemory_size;
 
 	qfv_framebufferset_t *framebuffers;
 	VkViewport  viewport;

include/vid_vulkan.h

@@ -81,6 +81,8 @@ typedef struct vulkan_ctx_s {
 	size_t      curFrame;
 	vulkan_frameset_t frames;
 	qfv_renderpassset_t renderPasses;
+	//FIXME for resize, but should be a set
+	struct qfv_renderpass_s *main_renderpass;
 
 	struct qfv_capture_s *capture;
 	void      (*capture_callback) (const byte *data, int width, int height);

libs/video/renderer/vid_render_vulkan.c

@@ -293,9 +293,32 @@ vulkan_begin_frame (void)
 	__auto_type frame = &vulkan_ctx->frames.a[vulkan_ctx->curFrame];
 
 	dfunc->vkWaitForFences (dev, 1, &frame->fence, VK_TRUE, 2000000000);
-	QFV_AcquireNextImage (vulkan_ctx->swapchain,
-						  frame->imageAvailableSemaphore,
-						  0, &imageIndex);
+	if (!QFV_AcquireNextImage (vulkan_ctx->swapchain,
+							   frame->imageAvailableSemaphore,
+							   0, &imageIndex)) {
+		QFV_DeviceWaitIdle (device);
+		if (vulkan_ctx->capture) {
+			QFV_DestroyCapture (vulkan_ctx->capture);
+		}
+		Vulkan_CreateSwapchain (vulkan_ctx);
+		Vulkan_CreateCapture (vulkan_ctx);
+
+		//FIXME
+		qfv_output_t output = {
+			.extent    = vulkan_ctx->swapchain->extent,
+			.view      = vulkan_ctx->swapchain->imageViews->a[0],
+			.format    = vulkan_ctx->swapchain->format,
+			.view_list = vulkan_ctx->swapchain->imageViews->a,
+		};
+		vulkan_ctx->main_renderpass->viewport.width = output.extent.width;
+		vulkan_ctx->main_renderpass->viewport.height = output.extent.height;
+		vulkan_ctx->main_renderpass->scissor.extent = output.extent;
+		vulkan_ctx->output = output;
+		Vulkan_CreateAttachments (vulkan_ctx, vulkan_ctx->main_renderpass);
+		QFV_AcquireNextImage (vulkan_ctx->swapchain,
+								   frame->imageAvailableSemaphore,
+								   0, &imageIndex);
+	}
 	vulkan_ctx->swapImageIndex = imageIndex;
 }
 

libs/video/renderer/vulkan/swapchain.c

@@ -8,7 +8,9 @@
 
 #include "QF/cvar.h"
 #include "QF/mathlib.h"
+#include "QF/va.h"
 
+#include "QF/Vulkan/debug.h"
 #include "QF/Vulkan/device.h"
 #include "QF/Vulkan/image.h"
 #include "QF/Vulkan/instance.h"

libs/video/renderer/vulkan/vulkan_main.c

@@ -180,4 +180,5 @@ Vulkan_Main_CreateRenderPasses (vulkan_ctx_t *ctx)
 											  &output, main_draw);
 	rp->order = QFV_rp_main;
 	DARRAY_APPEND (&ctx->renderPasses, rp);
+	ctx->main_renderpass = rp;
 }

libs/video/renderer/vulkan/vulkan_renderpass.c

@@ -74,10 +74,24 @@ get_image_size (VkImage image, qfv_device_t *device)
 	return size;
 }
 
+static void
+destroy_framebuffers (vulkan_ctx_t *ctx, qfv_renderpass_t *rp)
+{
+	qfv_device_t *device = ctx->device;
+	qfv_devfuncs_t *dfunc = device->funcs;
+
+	for (size_t i = 0; i < rp->framebuffers->size; i++) {
+		dfunc->vkDestroyFramebuffer (device->dev, rp->framebuffers->a[i], 0);
+	}
+	free (rp->framebuffers);
+	rp->framebuffers = 0;
+}
+
 void
 Vulkan_CreateAttachments (vulkan_ctx_t *ctx, qfv_renderpass_t *renderpass)
 {
 	qfv_device_t *device = ctx->device;
+	qfv_devfuncs_t *dfunc = device->funcs;
 	__auto_type rp = renderpass;
 
 	plitem_t   *item = get_rp_item (ctx, rp, "images");
@@ -85,19 +99,44 @@ Vulkan_CreateAttachments (vulkan_ctx_t *ctx, qfv_renderpass_t *renderpass)
 		return;
 	}
 
+	if (renderpass->framebuffers) {
+		destroy_framebuffers (ctx, renderpass);
+	}
+	if (rp->attachment_views) {
+		for (size_t i = 0; i < rp->attachment_views->size; i++) {
+			dfunc->vkDestroyImageView (device->dev,
+									   rp->attachment_views->a[i], 0);
+		}
+		free (rp->attachment_views);
+		rp->attachment_views = 0;
+	}
+	if (rp->attachment_images) {
+		for (size_t i = 0; i < rp->attachment_images->size; i++) {
+			dfunc->vkDestroyImage (device->dev, rp->attachment_images->a[i], 0);
+		}
+		free (rp->attachment_images);
+		rp->attachment_images = 0;
+	}
+
 	__auto_type images = QFV_ParseImageSet (ctx, item, rp->renderpassDef);
 	rp->attachment_images = images;
 	size_t      memSize = 0;
 	for (size_t i = 0; i < images->size; i++) {
 		memSize += get_image_size (images->a[i], device);
 	}
-	VkDeviceMemory mem;
-	mem = QFV_AllocImageMemory (device, images->a[0],
-								VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT,
-								memSize, 0);
-	rp->attachmentMemory = mem;
-	QFV_duSetObjectName (device, VK_OBJECT_TYPE_DEVICE_MEMORY,
-						 mem, "memory:framebuffers");
+	VkDeviceMemory mem = rp->attachmentMemory;
+	if (memSize > rp->attachmentMemory_size) {
+		if (rp->attachmentMemory) {
+			dfunc->vkFreeMemory (device->dev, rp->attachmentMemory, 0);
+		}
+		rp->attachmentMemory_size = memSize;
+		mem = QFV_AllocImageMemory (device, images->a[0],
+									VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT,
+									memSize, 0);
+		rp->attachmentMemory = mem;
+		QFV_duSetObjectName (device, VK_OBJECT_TYPE_DEVICE_MEMORY,
+							 mem, "memory:framebuffers");
+	}
 	size_t      offset = 0;
 	for (size_t i = 0; i < images->size; i++) {
 		QFV_BindImageMemory (device, images->a[i], mem, offset);
@@ -179,18 +218,6 @@ destroy_renderframes (vulkan_ctx_t *ctx, qfv_renderpass_t *rp)
 	}
 }
 
-static void
-destroy_framebuffers (vulkan_ctx_t *ctx, qfv_renderpass_t *rp)
-{
-	qfv_device_t *device = ctx->device;
-	qfv_devfuncs_t *dfunc = device->funcs;
-
-	for (size_t i = 0; i < rp->framebuffers->size; i++) {
-		dfunc->vkDestroyFramebuffer (device->dev, rp->framebuffers->a[i], 0);
-	}
-	free (rp->framebuffers);
-}
-
 qfv_renderpass_t *
 Vulkan_CreateRenderPass (vulkan_ctx_t *ctx, const char *name,
 						 qfv_output_t *output, qfv_draw_t draw)

libs/video/renderer/vulkan/vulkan_vid_common.c

@@ -280,7 +280,16 @@ Vulkan_CreateSwapchain (vulkan_ctx_t *ctx)
 {
 	VkSwapchainKHR old_swapchain = 0;
 	if (ctx->swapchain) {
+		//FIXME this shouldn't be here
+		qfv_device_t *device = ctx->swapchain->device;
+		VkDevice dev = device->dev;
+		qfv_devfuncs_t *dfunc = device->funcs;
 		old_swapchain = ctx->swapchain->swapchain;
+		for (size_t i = 0; i < ctx->swapchain->imageViews->size; i++) {
+			dfunc->vkDestroyImageView(dev, ctx->swapchain->imageViews->a[i], 0);
+		}
+		free (ctx->swapchain->images);
+		free (ctx->swapchain->imageViews);
 		free (ctx->swapchain);
 	}
 	ctx->swapchain = QFV_CreateSwapchain (ctx, old_swapchain);