render/vulkan: add some interfaces to allow compositors to integrate

Added wlr_vk_renderer_get_* functions to allow get the VkInstance,
VkPhysicalDevice, VkDevice, queue family of a wlr_vk_renderer.

Added wlr_vk_renderer_get_current_image_attribs function to allow get
the VkImage of current renderer buffer to use on compositors.

Added wlr_renderer_is_vk function, it's like the wlr_renderer_is_gles2,
returns true if the wlr_renderer is a wlr_vk_renderer.

Added wlr_vk_image_get_attribs function to get a VkImage and it's
extras information (e.g. a VkImageLayout and VkImageFormat of the
VkImage) from a wlr_texture.

1 files changed, 37 insertions, 1 deletions

diff --git a/render/vulkan/renderer.c b/render/vulkan/renderer.c
index 8bf01b1d..e620b42e 100644
--- a/render/vulkan/renderer.c
+++ b/render/vulkan/renderer.c
@@ -42,8 +42,12 @@ static bool default_debug = true;
 
 static const struct wlr_renderer_impl renderer_impl;
 
+bool wlr_renderer_is_vk(struct wlr_renderer *wlr_renderer) {
+	return wlr_renderer->impl == &renderer_impl;
+}
+
 struct wlr_vk_renderer *vulkan_get_renderer(struct wlr_renderer *wlr_renderer) {
-	assert(wlr_renderer->impl == &renderer_impl);
+	assert(wlr_renderer_is_vk(wlr_renderer));
 	return (struct wlr_vk_renderer *)wlr_renderer;
 }
 
@@ -1817,3 +1821,35 @@ struct wlr_renderer *wlr_vk_renderer_create_with_drm_fd(int drm_fd) {
 
 	return vulkan_renderer_create_for_device(dev);
 }
+
+VkInstance wlr_vk_renderer_get_instance(struct wlr_renderer *renderer)
+{
+	struct wlr_vk_renderer *vk_renderer = vulkan_get_renderer(renderer);
+	return vk_renderer->dev->instance->instance;
+}
+
+VkPhysicalDevice wlr_vk_renderer_get_physical_device(struct wlr_renderer *renderer)
+{
+	struct wlr_vk_renderer *vk_renderer = vulkan_get_renderer(renderer);
+	return vk_renderer->dev->phdev;
+}
+
+VkDevice wlr_vk_renderer_get_device(struct wlr_renderer *renderer)
+{
+	struct wlr_vk_renderer *vk_renderer = vulkan_get_renderer(renderer);
+	return vk_renderer->dev->dev;
+}
+
+uint32_t wlr_vk_renderer_get_queue_family(struct wlr_renderer *renderer)
+{
+	struct wlr_vk_renderer *vk_renderer = vulkan_get_renderer(renderer);
+	return vk_renderer->dev->queue_family;
+}
+
+void wlr_vk_renderer_get_current_image_attribs(struct wlr_renderer *renderer,
+		struct wlr_vk_image_attribs *attribs) {
+	struct wlr_vk_renderer *vk_renderer = vulkan_get_renderer(renderer);
+	attribs->image = vk_renderer->current_render_buffer->image;
+	attribs->format = vk_renderer->current_render_buffer->render_setup->render_format;
+	attribs->layout = VK_IMAGE_LAYOUT_UNDEFINED;
+}