dwm picom added

dwm/picom/src/render.h

@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: MPL-2.0
+// Copyright (c) Yuxuan Shui <yshuiv7@gmail.com>
+#pragma once
+
+#include <stdbool.h>
+#include <xcb/render.h>
+#include <xcb/xcb.h>
+#ifdef CONFIG_OPENGL
+#include "backend/gl/glx.h"
+#endif
+#include "region.h"
+
+typedef struct _glx_texture glx_texture_t;
+typedef struct glx_prog_main glx_prog_main_t;
+typedef struct session session_t;
+
+struct managed_win;
+
+typedef struct paint {
+	xcb_pixmap_t pixmap;
+	xcb_render_picture_t pict;
+	glx_texture_t *ptex;
+#ifdef CONFIG_OPENGL
+	struct glx_fbconfig_info *fbcfg;
+#endif
+} paint_t;
+
+typedef struct clip {
+	xcb_render_picture_t pict;
+	int x;
+	int y;
+} clip_t;
+
+void render(session_t *ps, int x, int y, int dx, int dy, int w, int h, int fullw,
+            int fullh, double opacity, bool argb, bool neg, int cr,
+            xcb_render_picture_t pict, glx_texture_t *ptex, const region_t *reg_paint,
+            const glx_prog_main_t *pprogram, clip_t *clip);
+void paint_one(session_t *ps, struct managed_win *w, const region_t *reg_paint);
+
+void paint_all(session_t *ps, struct managed_win *const t, bool ignore_damage);
+
+void free_picture(xcb_connection_t *c, xcb_render_picture_t *p);
+
+void free_paint(session_t *ps, paint_t *ppaint);
+void free_root_tile(session_t *ps);
+
+bool init_render(session_t *ps);
+void deinit_render(session_t *ps);
+
+int maximum_buffer_age(session_t *);