diff --git a/tests/checkasm/sw_range_convert.c b/tests/checkasm/sw_range_convert.c
index e97388d14a..e3e5096729 100644
--- a/tests/checkasm/sw_range_convert.c
+++ b/tests/checkasm/sw_range_convert.c
@@ -28,6 +28,33 @@
 
 #include "checkasm.h"
 
+static const enum AVPixelFormat pixel_formats[] = {
+    AV_PIX_FMT_YUV444P,
+    AV_PIX_FMT_YUV444P9,
+    AV_PIX_FMT_YUV444P10,
+    AV_PIX_FMT_YUV444P12,
+    AV_PIX_FMT_YUV444P14,
+    AV_PIX_FMT_YUV444P16,
+};
+
+static void randomize_buffers(int16_t *buf0, int16_t *buf1, int bit_depth, int width)
+{
+    int32_t *buf0_32 = (int32_t *) buf0;
+    int32_t *buf1_32 = (int32_t *) buf1;
+    int mask = (1 << bit_depth) - 1;
+    int src_shift = bit_depth <= 14 ? 15 - bit_depth : 19 - bit_depth;
+    for (int i = 0; i < width; i++) {
+        int32_t r = rnd() & mask;
+        if (bit_depth == 16) {
+            buf0_32[i] = r << src_shift;
+            buf1_32[i] = r << src_shift;
+        } else {
+            buf0[i] = r << src_shift;
+            buf1[i] = r << src_shift;
+        }
+    }
+}
+
 static void check_lumConvertRange(int from)
 {
     const char *func_str = from ? "lumRangeFromJpeg" : "lumRangeToJpeg";
@@ -35,8 +62,8 @@ static void check_lumConvertRange(int from)
     static const int input_sizes[] = {8, LARGEST_INPUT_SIZE};
     struct SwsContext *ctx;
 
-    LOCAL_ALIGNED_32(int16_t, dst0, [LARGEST_INPUT_SIZE]);
-    LOCAL_ALIGNED_32(int16_t, dst1, [LARGEST_INPUT_SIZE]);
+    LOCAL_ALIGNED_32(int16_t, dst0, [LARGEST_INPUT_SIZE * 2]);
+    LOCAL_ALIGNED_32(int16_t, dst1, [LARGEST_INPUT_SIZE * 2]);
 
     declare_func(void, int16_t *dst, int width);
 
@@ -44,28 +71,31 @@ static void check_lumConvertRange(int from)
     if (sws_init_context(ctx, NULL, NULL) < 0)
         fail();
 
-    ctx->srcFormat = AV_PIX_FMT_YUV444P;
-    ctx->dstFormat = AV_PIX_FMT_YUV444P;
     ctx->srcRange = from;
     ctx->dstRange = !from;
 
+    for (int pfi = 0; pfi < FF_ARRAY_ELEMS(pixel_formats); pfi++) {
+        enum AVPixelFormat pix_fmt = pixel_formats[pfi];
+        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+        int bit_depth = desc->comp[0].depth;
+        int sample_size = bit_depth == 16 ? sizeof(int32_t) : sizeof(int16_t);
+        ctx->srcFormat = pix_fmt;
+        ctx->dstFormat = pix_fmt;
+        ctx->dstBpc = bit_depth;
+        ff_sws_init_scale(ctx);
     for (int dstWi = 0; dstWi < FF_ARRAY_ELEMS(input_sizes); dstWi++) {
         int width = input_sizes[dstWi];
-        for (int i = 0; i < width; i++) {
-            uint8_t r = rnd();
-            dst0[i] = (int16_t) r << 7;
-            dst1[i] = (int16_t) r << 7;
-        }
-        ff_sws_init_scale(ctx);
-        if (check_func(ctx->lumConvertRange, "%s_%d", func_str, width)) {
+        if (check_func(ctx->lumConvertRange, "%s%d_%d", func_str, bit_depth, width)) {
+            randomize_buffers(dst0, dst1, bit_depth, width);
             call_ref(dst0, width);
             call_new(dst1, width);
-            if (memcmp(dst0, dst1, width * sizeof(int16_t)))
+            if (memcmp(dst0, dst1, width * sample_size))
                 fail();
-            if (width == LARGEST_INPUT_SIZE)
+            if (width == LARGEST_INPUT_SIZE && (bit_depth == 8 || bit_depth == 16))
             bench_new(dst1, width);
         }
     }
+    }
 
     sws_freeContext(ctx);
 }
@@ -78,10 +108,10 @@ static void check_chrConvertRange(int from)
     static const int input_sizes[] = {8, LARGEST_INPUT_SIZE};
     struct SwsContext *ctx;
 
-    LOCAL_ALIGNED_32(int16_t, dstU0, [LARGEST_INPUT_SIZE]);
-    LOCAL_ALIGNED_32(int16_t, dstV0, [LARGEST_INPUT_SIZE]);
-    LOCAL_ALIGNED_32(int16_t, dstU1, [LARGEST_INPUT_SIZE]);
-    LOCAL_ALIGNED_32(int16_t, dstV1, [LARGEST_INPUT_SIZE]);
+    LOCAL_ALIGNED_32(int16_t, dstU0, [LARGEST_INPUT_SIZE * 2]);
+    LOCAL_ALIGNED_32(int16_t, dstV0, [LARGEST_INPUT_SIZE * 2]);
+    LOCAL_ALIGNED_32(int16_t, dstU1, [LARGEST_INPUT_SIZE * 2]);
+    LOCAL_ALIGNED_32(int16_t, dstV1, [LARGEST_INPUT_SIZE * 2]);
 
     declare_func(void, int16_t *dstU, int16_t *dstV, int width);
 
@@ -89,31 +119,33 @@ static void check_chrConvertRange(int from)
     if (sws_init_context(ctx, NULL, NULL) < 0)
         fail();
 
-    ctx->srcFormat = AV_PIX_FMT_YUV444P;
-    ctx->dstFormat = AV_PIX_FMT_YUV444P;
     ctx->srcRange = from;
     ctx->dstRange = !from;
 
+    for (int pfi = 0; pfi < FF_ARRAY_ELEMS(pixel_formats); pfi++) {
+        enum AVPixelFormat pix_fmt = pixel_formats[pfi];
+        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
+        int bit_depth = desc->comp[0].depth;
+        int sample_size = bit_depth == 16 ? sizeof(int32_t) : sizeof(int16_t);
+        ctx->srcFormat = pix_fmt;
+        ctx->dstFormat = pix_fmt;
+        ctx->dstBpc = bit_depth;
+        ff_sws_init_scale(ctx);
     for (int dstWi = 0; dstWi < FF_ARRAY_ELEMS(input_sizes); dstWi++) {
         int width = input_sizes[dstWi];
-        for (int i = 0; i < width; i++) {
-            uint8_t r = rnd();
-            dstU0[i] = (int16_t) r << 7;
-            dstV0[i] = (int16_t) r << 7;
-            dstU1[i] = (int16_t) r << 7;
-            dstV1[i] = (int16_t) r << 7;
-        }
-        ff_sws_init_scale(ctx);
-        if (check_func(ctx->chrConvertRange, "%s_%d", func_str, width)) {
+        if (check_func(ctx->chrConvertRange, "%s%d_%d", func_str, bit_depth, width)) {
+            randomize_buffers(dstU0, dstU1, bit_depth, width);
+            randomize_buffers(dstV0, dstV1, bit_depth, width);
             call_ref(dstU0, dstV0, width);
             call_new(dstU1, dstV1, width);
-            if (memcmp(dstU0, dstU1, width * sizeof(int16_t)) ||
-                memcmp(dstV0, dstV1, width * sizeof(int16_t)))
+            if (memcmp(dstU0, dstU1, width * sample_size) ||
+                memcmp(dstV0, dstV1, width * sample_size))
                 fail();
-            if (width == LARGEST_INPUT_SIZE)
+            if (width == LARGEST_INPUT_SIZE && (bit_depth == 8 || bit_depth == 16))
             bench_new(dstU1, dstV1, width);
         }
     }
+    }
 
     sws_freeContext(ctx);
 }
