diff --git a/tests/util/pattern.c b/tests/util/pattern.c
index f9ef2b81..1fbe642e 100644
--- a/tests/util/pattern.c
+++ b/tests/util/pattern.c
@@ -61,6 +61,20 @@ struct color_yuv {
 	  .u = MAKE_YUV_601_U(r, g, b), \
 	  .v = MAKE_YUV_601_V(r, g, b) }
 
+static inline uint32_t swap32(uint32_t x)
+{
+	return ((x & 0x000000ffU) << 24) |
+	       ((x & 0x0000ff00U) <<  8) |
+	       ((x & 0x00ff0000U) >>  8) |
+	       ((x & 0xff000000U) >> 24);
+}
+
+#ifdef HAVE_BIG_ENDIAN
+#define cpu_to_le32(x)			swap32(x)
+#else
+#define cpu_to_le32(x)			(x)
+#endif
+
 /* This function takes 8-bit color values */
 static inline uint32_t shiftcolor8(const struct util_color_component *comp,
 				  uint32_t value)
@@ -662,26 +676,26 @@ static void fill_smpte_rgb32(const struct util_rgb_info *rgb, void *mem,
 
 	for (y = 0; y < height * 6 / 9; ++y) {
 		for (x = 0; x < width; ++x)
-			((uint32_t *)mem)[x] = colors_top[x * 7 / width];
+			((uint32_t *)mem)[x] = cpu_to_le32(colors_top[x * 7 / width]);
 		mem += stride;
 	}
 
 	for (; y < height * 7 / 9; ++y) {
 		for (x = 0; x < width; ++x)
-			((uint32_t *)mem)[x] = colors_middle[x * 7 / width];
+			((uint32_t *)mem)[x] = cpu_to_le32(colors_middle[x * 7 / width]);
 		mem += stride;
 	}
 
 	for (; y < height; ++y) {
 		for (x = 0; x < width * 5 / 7; ++x)
 			((uint32_t *)mem)[x] =
-				colors_bottom[x * 4 / (width * 5 / 7)];
+				cpu_to_le32(colors_bottom[x * 4 / (width * 5 / 7)]);
 		for (; x < width * 6 / 7; ++x)
 			((uint32_t *)mem)[x] =
-				colors_bottom[(x - width * 5 / 7) * 3
-					      / (width / 7) + 4];
+				cpu_to_le32(colors_bottom[(x - width * 5 / 7) * 3
+							  / (width / 7) + 4]);
 		for (; x < width; ++x)
-			((uint32_t *)mem)[x] = colors_bottom[7];
+			((uint32_t *)mem)[x] = cpu_to_le32(colors_bottom[7]);
 		mem += stride;
 	}
 }
@@ -1507,7 +1521,7 @@ static void fill_tiles_rgb32(const struct util_format_info *info, void *mem,
 					  (rgb32 >> 8) & 0xff, rgb32 & 0xff,
 					  alpha);
 
-			((uint32_t *)mem)[x] = color;
+			((uint32_t *)mem)[x] = cpu_to_le32(color);
 		}
 		mem += stride;
 	}
@@ -1662,7 +1676,7 @@ static void fill_gradient_rgb32(const struct util_rgb_info *rgb,
 
 		for (j = 0; j < width / 2; j++) {
 			uint32_t value = MAKE_RGBA10(rgb, j & 0x3ff, j & 0x3ff, j & 0x3ff, 0);
-			row[2*j] = row[2*j+1] = value;
+			row[2*j] = row[2*j+1] = cpu_to_le32(value);
 		}
 		mem += stride;
 	}
@@ -1672,7 +1686,7 @@ static void fill_gradient_rgb32(const struct util_rgb_info *rgb,
 
 		for (j = 0; j < width / 2; j++) {
 			uint32_t value = MAKE_RGBA10(rgb, j & 0x3fc, j & 0x3fc, j & 0x3fc, 0);
-			row[2*j] = row[2*j+1] = value;
+			row[2*j] = row[2*j+1] = cpu_to_le32(value);
 		}
 		mem += stride;
 	}