paint: fix bgra swap

paint/sources/ui/ui_view2d.c

@@ -36,7 +36,7 @@ void ui_view2d_init() {
 }
 
 void ui_view2d_capture_output(void *_) {
-	util_texture_capture_output(ui_view2d_tex, "tex_capture");
+	util_texture_capture_output(ui_view2d_tex, "tex_capture", false);
 }
 
 void ui_view2d_draw_edit() {

paint/sources/util/util_nodes.c

@@ -233,7 +233,13 @@ void ui_nodes_capture_output() {
 	ui_nodes_t       *ui_nodes = ui_nodes_get_nodes();
 	ui_node_canvas_t *c        = ui_nodes_get_canvas(true);
 	ui_node_t        *sel      = ui_get_node(c->nodes, ui_nodes->nodes_selected_id->buffer[0]);
-	util_texture_capture_output(ui_nodes_get_node_preview_image(sel), "node_preview");
+
+	bool bgra = false;
+#ifdef IRON_BGRA
+	bgra = string_equals(sel->type, "TEX_IMAGE") || starts_with(sel->type, "NEURAL_");
+#endif
+
+	util_texture_capture_output(ui_nodes_get_node_preview_image(sel), "node_preview", bgra);
 }
 
 void ui_viewnodes_on_canvas_capture_output(void *_) {

paint/sources/util/util_texture.c

@@ -1,7 +1,7 @@
 
 #include "../global.h"
 
-void util_texture_capture_output(gpu_texture_t *img, char *basename) {
+void util_texture_capture_output(gpu_texture_t *img, char *basename, bool bgra) {
 	if (img == NULL) {
 		return;
 	}
@@ -21,7 +21,15 @@ void util_texture_capture_output(gpu_texture_t *img, char *basename) {
 		}
 	}
 
-	u8_array_t     *bytes = iron_encode_png(gpu_get_texture_pixels(img), img->width, img->height, 0);
+	buffer_t *buf = gpu_get_texture_pixels(img);
+
+#ifdef IRON_BGRA
+	if (bgra) {
+		buf = buffer_bgra_swap(buf); // Vulkan non-rt textures need a flip
+	}
+#endif
+
+	u8_array_t     *bytes = iron_encode_png(buf, img->width, img->height, 0);
 	packed_asset_t *pa    = GC_ALLOC_INIT(packed_asset_t, {.name = abs, .bytes = bytes});
 	any_array_push(g_project->packed_assets, pa);
 	gpu_texture_t *copy = gpu_create_texture_from_encoded_bytes(bytes, ".png");