1 files changed, 29 insertions, 0 deletions
diff --git a/dblbuf.h b/dblbuf.h
new file mode 100644
index 0000000..aa2dc47
--- /dev/null
+++ b/dblbuf.h
@@ -0,0 +1,29 @@
+
+
+
+struct slice
+{
+	int y;
+	unsigned char *colors;
+	unsigned char *bitmap;
+};
+
+struct dblbuf
+{
+	struct slice *slices;
+	unsigned cs, ch;
+
+	unsigned curs_x;
+	unsigned curs_y;
+
+	unsigned char *vidmem;
+	unsigned row_stride;
+	unsigned line_stride;
+	unsigned bytes_per_pixel;
+};
+
+#define SLICE_BUF_SIZE(w, h, cs, ch) \
+	( (h)*(sizeof(struct slice) + (w)*(1 + (cs)*(ch))) )
+
+struct slice *dblbuf_setup_buf(int, int, int, int, unsigned char *);
+