1 files changed, 72 insertions, 0 deletions
diff --git a/src/blind-rectangle-tessellation.c b/src/blind-rectangle-tessellation.c
new file mode 100644
index 0000000..62e335d
--- /dev/null
+++ b/src/blind-rectangle-tessellation.c
@@ -0,0 +1,72 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+USAGE("[-F pixel-format] block-width block-height")
+
+#define SET_XYZA(TYPE)\
+	(pixwidth *= sizeof(double),\
+	 colours = alloca(4 * pixwidth),\
+	 ((TYPE *)colours)[ 0] = (TYPE)(0.0000 * D65_XYZ_X),\
+	 ((TYPE *)colours)[ 1] = (TYPE)(0.0000),\
+	 ((TYPE *)colours)[ 2] = (TYPE)(0.0000 * D65_XYZ_Z),\
+	 ((TYPE *)colours)[ 3] = (TYPE)1,\
+	 ((TYPE *)colours)[ 4] = (TYPE)(0.3333 * D65_XYZ_X),\
+	 ((TYPE *)colours)[ 5] = (TYPE)(0.3333),\
+	 ((TYPE *)colours)[ 6] = (TYPE)(0.3333 * D65_XYZ_Z),\
+	 ((TYPE *)colours)[ 7] = (TYPE)1,\
+	 ((TYPE *)colours)[ 8] = (TYPE)(0.6667 * D65_XYZ_X),\
+	 ((TYPE *)colours)[ 9] = (TYPE)(0.6667),\
+	 ((TYPE *)colours)[10] = (TYPE)(0.6667 * D65_XYZ_Z),\
+	 ((TYPE *)colours)[11] = (TYPE)1,\
+	 ((TYPE *)colours)[12] = (TYPE)(1.0000 * D65_XYZ_X),\
+	 ((TYPE *)colours)[13] = (TYPE)(1.0000),\
+	 ((TYPE *)colours)[14] = (TYPE)(1.0000 * D65_XYZ_Z),\
+	 ((TYPE *)colours)[15] = (TYPE)1)
+
+static struct stream stream = { .width = 0, .height = 0, .frames = 1 };
+
+int
+main(int argc, char *argv[])
+{
+	size_t width, height;
+	const char *pixfmt = "xyza";
+	size_t pixwidth = 4;
+	char *colours;
+	size_t x1, y1, x2, y2;
+
+	ARGBEGIN {
+	case 'F':
+		pixfmt = UARGF();
+		break;
+	default:
+		usage();
+	} ARGEND;
+
+	if (argc != 2)
+		usage();
+
+	width  = etozu_arg("block-width", argv[0], 1, SIZE_MAX);
+	height = etozu_arg("block-height", argv[1], 1, SIZE_MAX);
+
+	pixfmt = get_pixel_format(pixfmt, "xyza");
+	if (!strcmp(pixfmt, "xyza"))
+		SET_XYZA(double);
+	else if (!strcmp(pixfmt, "xyza f"))
+		SET_XYZA(float);
+	else
+		eprintf("pixel format %s is not supported, try xyza\n", pixfmt);
+
+	strcpy(stream.pixfmt, pixfmt);
+	stream.width  = 2 * width;
+	stream.height = 2 * height;
+	fprint_stream_head(stdout, &stream);
+	efflush(stdout, "<stdout>");
+
+	for (y1 = 0; y1 < 2; y1++)
+		for (y2 = 0; y2 < height; y2++)
+			for (x1 = 0; x1 < 2; x1++)
+				for (x2 = 0; x2 < width; x2++)
+					ewriteall(STDOUT_FILENO, colours + (y1 * 2 + x1) * pixwidth, pixwidth, "<stdout>");
+
+	return 0;
+}