1 files changed, 27 insertions, 0 deletions
diff --git a/include/mercury/kernel/framebuffer.hpp b/include/mercury/kernel/framebuffer.hpp
new file mode 100644
index 0000000..5c6ca23
--- /dev/null
+++ b/include/mercury/kernel/framebuffer.hpp
@@ -0,0 +1,27 @@
+#ifndef MERCURY_KERNEL_FRAMEBUFFER_HPP
+#define MERCURY_KERNEL_FRAMEBUFFER_HPP
+
+#include <cstdint>
+
+namespace mercury::kernel::framebuffer {
+
+  extern int width;
+  extern int height;
+
+  void init_framebuffer(uint64_t vaddr, uint64_t width, uint64_t height, uint64_t pitch);
+
+  typedef uint32_t color;
+  color encode_color(uint8_t r, uint8_t g, uint8_t b);
+
+  void set_pixel(int x, int y, color c);
+
+  //[from_start_x, from_end_x) x [from_start_y, from_end_y) -> [to_start_x, ...) x [to_start_y, ...)
+  //we assume from_start_x < from_end_x and from_start_y < from_end_y
+  void move_region(int from_start_x, int from_start_y, int from_end_x, int from_end_y, int to_start_x, int to_start_y);
+
+  //[start_x, end_x) x [start_y, end_y)
+  void fill_region(int start_x, int start_y, int end_x, int end_y, color c);
+
+}
+
+#endif