rototiller: new main w/modular renderers

This will be replacing the old rototiller listings, and uses all the
new stuff (drm_setup, fb, fps, renderers...)

1 files changed, 85 insertions, 0 deletions

diff --git a/rototiller.c b/rototiller.c
new file mode 100644
index 0000000..b1c8c36
--- /dev/null
+++ b/rototiller.c
@@ -0,0 +1,85 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+
+#include "drmsetup.h"
+#include "fb.h"
+#include "fps.h"
+#include "rototiller.h"
+#include "util.h"
+
+/* Copyright (C) 2016 Vito Caputo <vcaputo@pengaru.com> */
+
+#define NUM_FB_PAGES	3
+/* ^ By triple-buffering, we can have a page tied up being displayed, another
+ * tied up submitted and waiting for vsync, and still not block on getting
+ * another page so we can begin rendering another frame before vsync.  With
+ * just two pages we end up twiddling thumbs until the vsync arrives.
+ */
+
+extern rototiller_renderer_t	roto32_renderer;
+extern rototiller_renderer_t	roto64_renderer;
+extern rototiller_renderer_t	ray_renderer;
+extern rototiller_renderer_t	sparkler_renderer;
+
+static rototiller_renderer_t	*renderers[] = {
+	&roto32_renderer,
+	&roto64_renderer,
+	&ray_renderer,
+	&sparkler_renderer,
+};
+
+
+static void renderer_select(int *renderer)
+{
+	int	i;
+
+	puts("");
+	for (i = 0; i < nelems(renderers); i++) {
+		printf("%i: %s - %s\n", i, renderers[i]->name, renderers[i]->description);
+	}
+
+	ask_num(renderer, nelems(renderers) - 1, "Renderer", 0);
+}
+
+
+int main(int argc, const char *argv[])
+{
+	int			drm_fd;
+	drmModeModeInfoPtr	drm_mode;
+	uint32_t		drm_crtc_id;
+	uint32_t		drm_connector_id;
+	fb_t			*fb;
+	int			renderer;
+
+	drm_setup(&drm_fd, &drm_crtc_id, &drm_connector_id, &drm_mode);
+	renderer_select(&renderer);
+
+	exit_if(!(fb = fb_new(drm_fd, drm_crtc_id, &drm_connector_id, 1, drm_mode, NUM_FB_PAGES)),
+		"unable to create fb");
+
+	pexit_if(!fps_setup(),
+		"unable to setup fps counter");
+
+	for (;;) {
+		fb_page_t	*page;
+
+		fps_print(fb);
+
+		page = fb_page_get(fb);
+		renderers[renderer]->render(&page->fragment);
+		fb_page_put(fb, page);
+	}
+
+	fb_free(fb);
+	close(drm_fd);
+
+	return EXIT_SUCCESS;
+}