translate: add testsuite

Currently only checks all possible format conversions, and doesn't
attempt to test whether multiple buffers/elements or indices work.

2 files changed, 172 insertions, 1 deletions

diff --git a/src/gallium/tests/unit/Makefile b/src/gallium/tests/unit/Makefile
index f65958dadd..345bd1f694 100644
--- a/src/gallium/tests/unit/Makefile
+++ b/src/gallium/tests/unit/Makefile
@@ -22,7 +22,8 @@ SOURCES = \
 	pipe_barrier_test.c \
 	u_cache_test.c \
 	u_half_test.c \
-	u_format_test.c
+	u_format_test.c \
+	translate_test.c
 
 
 OBJECTS = $(SOURCES:.c=.o)
diff --git a/src/gallium/tests/unit/translate_test.c b/src/gallium/tests/unit/translate_test.c
new file mode 100644
index 0000000000..473c73afaa
--- /dev/null
+++ b/src/gallium/tests/unit/translate_test.c
@@ -0,0 +1,170 @@
+/**************************************************************************
+ *
+ * Copyright © 2010 Luca Barbieri
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#include <stdio.h>
+#include <translate/translate.h>
+#include <util/u_memory.h>
+#include <util/u_format.h>
+
+int main(int argc, char** argv)
+{
+	struct translate *(*create_fn)( const struct translate_key *key ) = 0;
+
+	struct translate_key key;
+	unsigned output_format;
+	unsigned input_format;
+	unsigned char* buffer[5];
+	unsigned count = 4;
+	unsigned i, j, k;
+	unsigned passed = 0;
+	unsigned total = 0;
+
+	create_fn = 0;
+
+	if(argc > 1 && !strcmp(argv[1], "generic"))
+		create_fn = translate_generic_create;
+	else if(argc > 1 && !strcmp(argv[1], "x86"))
+		create_fn = translate_sse2_create;
+
+	if(!create_fn)
+	{
+		printf("Usage: ./translate_test [generic|x86]\n");
+		return 1;
+	}
+
+	for(i = 0; i < Elements(buffer); ++i)
+		buffer[i] = align_malloc(4096, 4096);
+
+	key.nr_elements = 1;
+	key.element[0].input_buffer = 0;
+	key.element[0].input_offset = 0;
+	key.element[0].output_offset = 0;
+	key.element[0].type = TRANSLATE_ELEMENT_NORMAL;
+	key.element[0].instance_divisor = 0;
+
+	srand(4359025);
+	for(i = 0; i < 4096; ++i)
+		buffer[0][i] = rand() & 0x7f; /* avoid negative values that work badly when converted to unsigned format*/
+
+	for(output_format = 0; output_format < PIPE_FORMAT_COUNT; ++output_format)
+	{
+		const struct util_format_description* output_format_desc = util_format_description(output_format);
+		unsigned output_format_size = util_format_get_stride(output_format, 1);
+		if(!output_format_desc
+			|| !output_format_desc->fetch_rgba_float
+			|| !output_format_desc->pack_rgba_float
+			|| output_format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB
+			|| output_format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN
+		)
+			continue;
+
+		for(input_format = 0; input_format < PIPE_FORMAT_COUNT; ++input_format)
+		{
+			const struct util_format_description* input_format_desc = util_format_description(input_format);
+			unsigned input_format_size = util_format_get_stride(input_format, 1);
+			struct translate* translate[2];
+			unsigned fail = 0;
+
+			if(!input_format_desc
+				|| !input_format_desc->fetch_rgba_float
+				|| !input_format_desc->pack_rgba_float
+				|| input_format_desc->colorspace != UTIL_FORMAT_COLORSPACE_RGB
+				|| input_format_desc->layout != UTIL_FORMAT_LAYOUT_PLAIN
+			)
+				continue;
+
+			key.element[0].input_format = input_format;
+			key.element[0].output_format = output_format;
+			key.output_stride = output_format_size;
+			translate[0] = create_fn(&key);
+			if(!translate[0])
+				continue;
+
+			key.element[0].input_format = output_format;
+			key.element[0].output_format = input_format;
+			key.output_stride = input_format_size;
+			translate[1] = create_fn(&key);
+			if(!translate[1])
+				goto free_translate0;
+
+			translate[0]->set_buffer(translate[0], 0, buffer[0], input_format_size, ~0);
+			translate[0]->run(translate[0], 0, count, 0, buffer[1]);
+			translate[1]->set_buffer(translate[1], 0, buffer[1], output_format_size, ~0);
+			translate[1]->run(translate[1], 0, count, 0, buffer[2]);
+			translate[0]->set_buffer(translate[0], 0, buffer[2], input_format_size, ~0);
+			translate[0]->run(translate[0], 0, count, 0, buffer[3]);
+			translate[1]->set_buffer(translate[1], 0, buffer[3], output_format_size, ~0);
+			translate[1]->run(translate[1], 0, count, 0, buffer[4]);
+
+			for(i = 0; i < count; ++i)
+			{
+				float a[4];
+				float b[4];
+				float error = 0.03125;
+				input_format_desc->fetch_rgba_float(a, buffer[2] + i * input_format_size, 0, 0);
+				input_format_desc->fetch_rgba_float(b, buffer[4] + i * input_format_size, 0, 0);
+
+				for(j = 0; j < count; ++j)
+				{
+					float d = a[j] - b[j];
+					if(d > error || d < -error)
+					{
+						fail = 1;
+						break;
+					}
+				}
+			}
+
+			if(fail)
+			{
+				printf("FAIL: %s -> %s -> %s -> %s -> %s\n", input_format_desc->name, output_format_desc->name, input_format_desc->name, output_format_desc->name, input_format_desc->name);
+				for(i = 0; i < Elements(buffer); ++i)
+				{
+					unsigned format_size = (i & 1) ? output_format_size : input_format_size;
+					printf("%c ",  (i == 2 || i == 4) ? '*' : ' ');
+					for(j = 0; j < count; ++j)
+					{
+						for(k = 0; k < format_size; ++k)
+						{
+							printf("%02x", buffer[i][j * format_size + k]);
+						}
+						printf(" ");
+					}
+					printf("\n");
+				}
+			}
+			else
+				++passed;
+			++total;
+
+			translate[1]->release(translate[1]);
+free_translate0:
+			translate[0]->release(translate[0]);
+		}
+	}
+
+	printf("%u/%u tests passed for translate_%s\n", passed, total, argv[1]);
+	return 0;
+}