render/vulkan: Dynamically create texture views

Now that we are dynamically creating pipeline layouts, we need separate
texture views for each pipeline layout we choose to use with a texture.

include/render/vulkan.h

@@ -295,12 +295,24 @@ struct wlr_vk_vert_pcr_data {
 	float uv_size[2];
 };
 
+struct wlr_vk_texture_view {
+	struct wl_list link; // struct wlr_vk_texture.views
+	const struct wlr_vk_pipeline_layout *layout;
+
+	VkDescriptorSet ds;
+	VkImageView image_view;
+	struct wlr_vk_descriptor_pool *ds_pool;
+};
+
 struct wlr_vk_pipeline *setup_get_or_create_pipeline(
 	struct wlr_vk_render_format_setup *setup,
 	const struct wlr_vk_pipeline_key *key);
 struct wlr_vk_pipeline_layout *get_or_create_pipeline_layout(
 	struct wlr_vk_renderer *renderer,
 	const struct wlr_vk_pipeline_layout_key *key);
+struct wlr_vk_texture_view *vulkan_texture_get_or_create_view(
+	struct wlr_vk_texture *texture,
+	const struct wlr_vk_pipeline_layout *layout);
 
 // Creates a vulkan renderer for the given device.
 struct wlr_renderer *vulkan_renderer_create_for_device(struct wlr_vk_device *dev);
@@ -373,11 +385,8 @@ struct wlr_vk_texture {
 	uint32_t mem_count;
 	VkDeviceMemory memories[WLR_DMABUF_MAX_PLANES];
 	VkImage image;
-	VkImageView image_view;
 	const struct wlr_vk_format *format;
 	enum wlr_vk_texture_transform transform;
-	VkDescriptorSet ds;
-	struct wlr_vk_descriptor_pool *ds_pool;
 	struct wlr_vk_command_buffer *last_used_cb; // to track when it can be destroyed
 	bool dmabuf_imported;
 	bool owned; // if dmabuf_imported: whether we have ownership of the image
@@ -392,6 +401,8 @@ struct wlr_vk_texture {
 	struct wlr_addon buffer_addon;
 	// For DMA-BUF implicit sync interop
 	VkSemaphore foreign_semaphores[WLR_DMABUF_MAX_PLANES];
+
+	struct wl_list views; // struct wlr_vk_texture_ds.link
 };
 
 struct wlr_vk_texture *vulkan_get_texture(struct wlr_texture *wlr_texture);

render/vulkan/pass.c

@@ -555,10 +555,17 @@ static void render_pass_add_texture(struct wlr_render_pass *wlr_pass,
 		return;
 	}
 
+	struct wlr_vk_texture_view *view =
+		vulkan_texture_get_or_create_view(texture, pipe->layout);
+	if (!view) {
+		pass->failed = true;
+		return;
+	}
+
 	bind_pipeline(pass, pipe->vk);
 
 	vkCmdBindDescriptorSets(cb, VK_PIPELINE_BIND_POINT_GRAPHICS,
-		pipe->layout->vk, 0, 1, &texture->ds, 0, NULL);
+		pipe->layout->vk, 0, 1, &view->ds, 0, NULL);
 
 	vkCmdPushConstants(cb, pipe->layout->vk,
 		VK_SHADER_STAGE_VERTEX_BIT, 0, sizeof(vert_pcr_data), &vert_pcr_data);

render/vulkan/renderer.c

@@ -1419,13 +1419,19 @@ static bool vulkan_render_subtexture_with_matrix(struct wlr_renderer *wlr_render
 		return false;
 	}
 
+	struct wlr_vk_texture_view *view =
+		vulkan_texture_get_or_create_view(texture, pipe->layout);
+	if (!view) {
+		return false;
+	}
+
 	if (pipe->vk != renderer->bound_pipe) {
 		vkCmdBindPipeline(cb, VK_PIPELINE_BIND_POINT_GRAPHICS, pipe->vk);
 		renderer->bound_pipe = pipe->vk;
 	}
 
 	vkCmdBindDescriptorSets(cb, VK_PIPELINE_BIND_POINT_GRAPHICS,
-		pipe->layout->vk, 0, 1, &texture->ds, 0, NULL);
+		pipe->layout->vk, 0, 1, &view->ds, 0, NULL);
 
 	float final_matrix[9];
 	wlr_matrix_multiply(final_matrix, renderer->projection, matrix);

render/vulkan/texture.c

@@ -214,8 +214,12 @@ void vulkan_texture_destroy(struct wlr_vk_texture *texture) {
 	wl_list_remove(&texture->link);
 
 	VkDevice dev = texture->renderer->dev->dev;
-	if (texture->ds && texture->ds_pool) {
-		vulkan_free_ds(texture->renderer, texture->ds_pool, texture->ds);
+
+	struct wlr_vk_texture_view *view, *tmp_view;
+	wl_list_for_each_safe(view, tmp_view, &texture->views, link) {
+		vulkan_free_ds(texture->renderer, view->ds_pool, view->ds);
+		vkDestroyImageView(dev, view->image_view, NULL);
+		free(view);
 	}
 
 	for (size_t i = 0; i < WLR_DMABUF_MAX_PLANES; i++) {
@@ -224,7 +228,6 @@ void vulkan_texture_destroy(struct wlr_vk_texture *texture) {
 		}
 	}
 
-	vkDestroyImageView(dev, texture->image_view, NULL);
 	vkDestroyImage(dev, texture->image, NULL);
 
 	for (unsigned i = 0u; i < texture->mem_count; ++i) {
@@ -262,22 +265,29 @@ static struct wlr_vk_texture *vulkan_texture_create(
 		&texture_impl, width, height);
 	texture->renderer = renderer;
 	wl_list_insert(&renderer->textures, &texture->link);
+	wl_list_init(&texture->views);
 	return texture;
 }
 
-static bool vulkan_texture_init_view(struct wlr_vk_texture *texture) {
-	VkResult res;
-	VkDevice dev = texture->renderer->dev->dev;
+struct wlr_vk_texture_view *vulkan_texture_get_or_create_view(struct wlr_vk_texture *texture,
+		const struct wlr_vk_pipeline_layout *pipeline_layout) {
+	struct wlr_vk_texture_view *view;
+	wl_list_for_each(view, &texture->views, link) {
+		if (view->layout == pipeline_layout) {
+			return view;
+		}
+	}
 
-	struct wlr_vk_pipeline_layout *pipeline_layout = get_or_create_pipeline_layout(
-		texture->renderer, &(struct wlr_vk_pipeline_layout_key) {
-			.ycbcr_format = texture->format->is_ycbcr ? texture->format : NULL,
-		});
-	if (!pipeline_layout) {
-		wlr_log(WLR_ERROR, "Failed to create a pipeline layout for a texture");
+	view = calloc(1, sizeof(*view));
+	if (!view) {
 		return NULL;
 	}
 
+	view->layout = pipeline_layout;
+
+	VkResult res;
+	VkDevice dev = texture->renderer->dev->dev;
+
 	const struct wlr_pixel_format_info *format_info =
 		drm_get_pixel_format_info(texture->format->drm);
 	if (format_info != NULL) {
@@ -317,20 +327,22 @@ static bool vulkan_texture_init_view(struct wlr_vk_texture *texture) {
 		view_info.pNext = &ycbcr_conversion_info;
 	}
 
-	res = vkCreateImageView(dev, &view_info, NULL, &texture->image_view);
+	res = vkCreateImageView(dev, &view_info, NULL, &view->image_view);
 	if (res != VK_SUCCESS) {
+		free(view);
 		wlr_vk_error("vkCreateImageView failed", res);
-		return false;
+		return NULL;
 	}
 
-	texture->ds_pool = vulkan_alloc_texture_ds(texture->renderer, pipeline_layout->ds, &texture->ds);
-	if (!texture->ds_pool) {
+	view->ds_pool = vulkan_alloc_texture_ds(texture->renderer, pipeline_layout->ds, &view->ds);
+	if (!view->ds_pool) {
+		free(view);
 		wlr_log(WLR_ERROR, "failed to allocate descriptor");
-		return false;
+		return NULL;
 	}
 
 	VkDescriptorImageInfo ds_img_info = {
-		.imageView = texture->image_view,
+		.imageView = view->image_view,
 		.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL,
 	};
 
@@ -338,13 +350,14 @@ static bool vulkan_texture_init_view(struct wlr_vk_texture *texture) {
 		.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET,
 		.descriptorCount = 1,
 		.descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
-		.dstSet = texture->ds,
+		.dstSet = view->ds,
 		.pImageInfo = &ds_img_info,
 	};
 
 	vkUpdateDescriptorSets(dev, 1, &ds_write, 0, NULL);
 
-	return true;
+	wl_list_insert(&texture->views, &view->link);
+	return view;
 }
 
 static struct wlr_texture *vulkan_texture_from_pixels(
@@ -419,10 +432,6 @@ static struct wlr_texture *vulkan_texture_from_pixels(
 		goto error;
 	}
 
-	if (!vulkan_texture_init_view(texture)) {
-		goto error;
-	}
-
 	pixman_region32_t region;
 	pixman_region32_init_rect(&region, 0, 0, width, height);
 	if (!write_pixels(texture, stride, &region, data, VK_IMAGE_LAYOUT_UNDEFINED,
@@ -706,10 +715,6 @@ static struct wlr_vk_texture *vulkan_texture_from_dmabuf(
 		goto error;
 	}
 
-	if (!vulkan_texture_init_view(texture)) {
-		goto error;
-	}
-
 	texture->dmabuf_imported = true;
 
 	return texture;