Stop importing DMA-BUFs into EGL

Make renderer_texture_from_dmabuf a no-op, since we handle client
DMA-BUFs with Vulkan. We're using wlr_buffer_get_dmabuf to directly
access the client-submitted FDs.

src/rendervulkan.cpp

@@ -2155,6 +2155,16 @@ uint32_t vulkan_texture_get_fbid( VulkanTexture_t vulkanTex )
 	return ret;
 }
 
+static void texture_destroy( struct wlr_texture *wlr_texture )
+{
+	VulkanWlrTexture_t *tex = (VulkanWlrTexture_t *)wlr_texture;
+	delete tex;
+}
+
+static const struct wlr_texture_impl texture_impl = {
+	.destroy = texture_destroy,
+};
+
 static void renderer_begin( struct wlr_renderer *renderer, uint32_t width, uint32_t height )
 {
 	abort(); // unreachable
@@ -2225,8 +2235,11 @@ static const struct wlr_drm_format_set *renderer_get_dmabuf_texture_formats( str
 
 static struct wlr_texture *renderer_texture_from_dmabuf( struct wlr_renderer *wlr_renderer, struct wlr_dmabuf_attributes *dmabuf )
 {
-	VulkanRenderer_t *renderer = (VulkanRenderer_t *) wlr_renderer;
+	VulkanWlrTexture_t *tex = new VulkanWlrTexture_t();
-	return wlr_texture_from_dmabuf( renderer->parent, dmabuf );
+	wlr_texture_init( &tex->base, &texture_impl, dmabuf->width, dmabuf->height );
+	// TODO: check format/modifier
+	// TODO: try importing it into Vulkan
+	return &tex->base;
 }
 
 static bool renderer_resource_is_wl_drm_buffer( struct wlr_renderer *wlr_renderer, struct wl_resource *resource )

src/rendervulkan.hpp

@@ -70,6 +70,11 @@ struct VulkanRenderer_t
 	struct wlr_renderer *parent;
 };
 
+struct VulkanWlrTexture_t
+{
+	struct wlr_texture base;
+};
+
 class CVulkanTexture
 {
 public: