1 files changed, 18 insertions, 3 deletions
diff --git a/src/screen.h b/src/screen.h
index e1d80d1..423af7e 100644
--- a/src/screen.h
+++ b/src/screen.h
@@ -1,13 +1,28 @@
 #pragma once
 
-#define _POSIX_C_SOURCE 200809L
+#define _XOPEN_SOURCE   600
+#define _POSIX_C_SOURCE 200112L
+// #define _POSIX_C_SOURCE 200809L
 #include <stdint.h>
 #include <stdbool.h>
+#include <pthread.h>
 
-struct Screen {
+typedef struct {
     uint16_t width;
     uint16_t height;
-    uint32_t* pixels;
+    uint8_t image_count; // amount of frames in flight
+    uint8_t image_front; // image being drawn to screen
+    uint8_t image_recent; // last image that finished drawing
+    uint8_t image_current; // current image being drawn
+    pthread_mutex_t lock;
+    uint32_t** images;
+} Swapchain;
+
+void swapchain_next(Swapchain* swapchain);
+void swapchain_submit(Swapchain* swapchain);
+
+struct Screen {
+    Swapchain swapchain;
     float delta;
     void* internal;
 };