Draw spans

2 files changed, 40 insertions, 0 deletions

diff --git a/harddoomdev.h b/harddoomdev.h
index ab7a398..9381fd5 100644
--- a/harddoomdev.h
+++ b/harddoomdev.h
@@ -21,5 +21,7 @@ void copy_rect(struct surface_data *dst_data, struct surface_data *src_data,
 		struct doomdev_copy_rect rect);
 void draw_column(struct surface_data *surface_data,
 		struct texture_data *texture_data, struct doomdev_column column);
+void draw_span(struct surface_data *surface_data, struct flat_data *flat_data,
+		struct doomdev_span span);
 
 #endif
diff --git a/surface.c b/surface.c
index 688223a..779fd73 100644
--- a/surface.c
+++ b/surface.c
@@ -132,6 +132,42 @@ long draw_columns(struct file *filp, unsigned long arg)
 	return param->columns_num;
 }
 
+long draw_spans(struct file *filp, unsigned long arg)
+{
+	struct doomdev_surf_ioctl_draw_spans *param;
+	struct surface_data *surface_data;
+	struct flat_data *flat_data;
+	struct doomdev_span *spans;
+	struct fd flat_fds;
+	int i;
+
+	surface_data = filp->private_data;
+
+	param = (struct doomdev_surf_ioctl_draw_spans *) arg;
+
+	flat_fds = fdget(param->flat_fd);
+	flat_data = flat_fds.file->private_data;
+
+	if (surface_data->doom_data != flat_data->doom_data) {
+		p("flat from different device\n");
+		return -EINVAL;
+	}
+
+	spans = (struct doomdev_span *) param->spans_ptr;
+
+	mutex_lock(&surface_data->doom_data->cmd_mutex);
+
+	for (i = 0; i < param->spans_num; i++) {
+		draw_span(surface_data, flat_data, spans[i]);
+	}
+
+	mutex_unlock(&surface_data->doom_data->cmd_mutex);
+
+	fdput(flat_fds);
+
+	return param->spans_num;
+}
+
 long surface_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
 	switch (cmd) {
@@ -143,6 +179,8 @@ long surface_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 		return copy_rects(filp, arg);
 	case DOOMDEV_SURF_IOCTL_DRAW_COLUMNS:
 		return draw_columns(filp, arg);
+	case DOOMDEV_SURF_IOCTL_DRAW_SPANS:
+		return draw_spans(filp, arg);
 	default:
 		return -1;
 	}