diff --git a/src/xrt/auxiliary/util/u_format.c b/src/xrt/auxiliary/util/u_format.c
index 1ed9731d7..0b1d11a98 100644
--- a/src/xrt/auxiliary/util/u_format.c
+++ b/src/xrt/auxiliary/util/u_format.c
@@ -19,6 +19,9 @@ u_format_str(enum xrt_format f)
 	case XRT_FORMAT_R8G8B8X8: return "XRT_FORMAT_R8G8B8X8";
 	case XRT_FORMAT_R8G8B8A8: return "XRT_FORMAT_R8G8B8A8";
 	case XRT_FORMAT_R8G8B8: return "XRT_FORMAT_R8G8B8";
+	case XRT_FORMAT_R8G8: return "XRT_FORMAT_R8G8";
+	case XRT_FORMAT_R8: return "XRT_FORMAT_R8";
+	case XRT_FORMAT_L8: return "XRT_FORMAT_L8";
 	case XRT_FORMAT_BITMAP_8X1: return "XRT_FORMAT_BITMAP_8X1";
 	case XRT_FORMAT_BITMAP_8X8: return "XRT_FORMAT_BITMAP_8X8";
 	case XRT_FORMAT_YUV888: return "XRT_FORMAT_YUV888";
@@ -35,6 +38,9 @@ u_format_is_blocks(enum xrt_format f)
 	case XRT_FORMAT_R8G8B8X8:
 	case XRT_FORMAT_R8G8B8A8:
 	case XRT_FORMAT_R8G8B8:
+	case XRT_FORMAT_R8G8:
+	case XRT_FORMAT_R8:
+	case XRT_FORMAT_L8:
 	case XRT_FORMAT_BITMAP_8X1:
 	case XRT_FORMAT_BITMAP_8X8:
 	case XRT_FORMAT_YUV888:
@@ -55,6 +61,9 @@ u_format_block_width(enum xrt_format f)
 	case XRT_FORMAT_R8G8B8X8:
 	case XRT_FORMAT_R8G8B8A8:
 	case XRT_FORMAT_R8G8B8:
+	case XRT_FORMAT_R8G8:
+	case XRT_FORMAT_R8:
+	case XRT_FORMAT_L8:
 	case XRT_FORMAT_YUV888:
 		// Regular one pixel per block formats.
 		return 1;
@@ -76,6 +85,9 @@ u_format_block_height(enum xrt_format f)
 	case XRT_FORMAT_R8G8B8X8:
 	case XRT_FORMAT_R8G8B8A8:
 	case XRT_FORMAT_R8G8B8:
+	case XRT_FORMAT_R8G8:
+	case XRT_FORMAT_R8:
+	case XRT_FORMAT_L8:
 	case XRT_FORMAT_BITMAP_8X1:
 	case XRT_FORMAT_YUV888:
 	case XRT_FORMAT_YUV422:
@@ -92,8 +104,14 @@ size_t
 u_format_block_size(enum xrt_format f)
 {
 	switch (f) {
-	case XRT_FORMAT_BITMAP_8X1: return 1;
-
+	case XRT_FORMAT_BITMAP_8X1:
+	case XRT_FORMAT_R8:
+	case XRT_FORMAT_L8:
+		// One byte blocks
+		return 1;
+	case XRT_FORMAT_R8G8:
+		// Two bytes, 16bits.
+		return 2;
 	case XRT_FORMAT_R8G8B8:
 	case XRT_FORMAT_YUV888:
 		// Weird 24bit pixel formats.