progs/gallium: Add unit tests for pixel format packing/unpacking.

3 files changed, 337 insertions, 38 deletions

diff --git a/progs/SConscript b/progs/SConscript
index 2ec95a282e8..aa6640cf7a6 100644
--- a/progs/SConscript
+++ b/progs/SConscript
@@ -1,8 +1,13 @@
+Import('*')
+
+if env['platform'] == 'embedded':
+    Return()
+
 SConscript([
     'util/SConscript',
 ])
 
-Import('*')
+Import('util')
 
 progs_env = env.Clone()
 
@@ -15,40 +20,40 @@ if progs_env['platform'] == 'windows':
         'gdi32',
     ])
 
-if platform != 'embedded':
-	# OpenGL
-	if progs_env['platform'] == 'windows':
-   		progs_env.Prepend(LIBS = ['glu32', 'opengl32'])
-	else:
-		progs_env.Prepend(LIBS = ['GLU', 'GL'])
-
-	# Glut
-	progs_env.Prepend(LIBPATH = [glut.dir])
-	progs_env.Prepend(LIBS = [glut.name])
-
-	# GLEW
-	progs_env.Prepend(LIBS = [glew])
-
-	progs_env.Prepend(CPPPATH = [
-		'#progs/util',
-	])
-
-	progs_env.Prepend(LIBS = [
-		util,
-	])
-
-	Export('progs_env')
-
-	SConscript([
-	    'demos/SConscript',
-	    'glsl/SConscript',
-	    'redbook/SConscript',
-	    'samples/SConscript',
-	    'tests/SConscript',
-	    'trivial/SConscript',
-	    'vp/SConscript',
-	    'vpglsl/SConscript',
-	    'fp/SConscript',
-	    'wgl/SConscript',
-	    'perf/SConscript',
-	])
+# OpenGL
+if progs_env['platform'] == 'windows':
+    progs_env.Prepend(LIBS = ['glu32', 'opengl32'])
+else:
+    progs_env.Prepend(LIBS = ['GLU', 'GL'])
+
+# Glut
+progs_env.Prepend(LIBPATH = [glut.dir])
+progs_env.Prepend(LIBS = [glut.name])
+
+# GLEW
+progs_env.Prepend(LIBS = [glew])
+
+progs_env.Prepend(CPPPATH = [
+    '#progs/util',
+])
+
+progs_env.Prepend(LIBS = [
+    util,
+])
+
+Export('progs_env')
+
+SConscript([
+    'demos/SConscript',
+    'glsl/SConscript',
+    'redbook/SConscript',
+    'samples/SConscript',
+    'tests/SConscript',
+    'trivial/SConscript',
+    'vp/SConscript',
+    'vpglsl/SConscript',
+    'fp/SConscript',
+    'wgl/SConscript',
+    'perf/SConscript',
+    'gallium/unit/SConscript',
+])
diff --git a/progs/gallium/unit/SConscript b/progs/gallium/unit/SConscript
new file mode 100644
index 00000000000..7c614f628e9
--- /dev/null
+++ b/progs/gallium/unit/SConscript
@@ -0,0 +1,15 @@
+Import('*')
+
+env = env.Clone()
+
+env.Prepend(LIBS = [gallium])
+
+progs = [
+    'u_format_test'
+]
+
+for prog in progs:
+    prog = env.Program(
+        target = prog,
+        source = prog + '.c',
+    )
diff --git a/progs/gallium/unit/u_format_test.c b/progs/gallium/unit/u_format_test.c
new file mode 100644
index 00000000000..35bf0220e58
--- /dev/null
+++ b/progs/gallium/unit/u_format_test.c
@@ -0,0 +1,279 @@
+/**************************************************************************
+ *
+ * Copyright 2009-2010 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * 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, sub license, 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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 <stdlib.h>
+#include <stdio.h>
+
+#include "util/u_format.h"
+#include "util/u_format_pack.h"
+
+
+#define MAX_PACKED_BYTES 4
+
+
+/**
+ * A (packed, unpacked) color pair.
+ */
+struct util_format_test_case
+{
+   enum pipe_format format;
+
+   /**
+    * Mask of the bits that actually meaningful data. Used to mask out the
+    * "X" channels.
+    */
+   uint8_t mask[MAX_PACKED_BYTES];
+
+   uint8_t packed[MAX_PACKED_BYTES];
+
+   /**
+    * RGBA.
+    */
+   double unpacked[4];
+};
+
+
+/*
+ * Helper macros to create the packed bytes for longer words.
+ */
+
+#define PACKED_1x8(x) {x, 0, 0, 0}
+#define PACKED_4x8(x, y, z, w) {x, y, z, w}
+#define PACKED_1x32(x) {(x) & 0xff, ((x) >> 8) & 0xff, ((x) >> 16) & 0xff, ((x) >> 24) & 0xff}
+#define PACKED_1x16(x) {(x) & 0xff, ((x) >> 8) & 0xff, 0, 0}
+
+
+/**
+ * Test cases.
+ *
+ * These were manually entered. We could generate these
+ *
+ * To keep this to a we cover only the corner cases, which should produce
+ * good enough coverage since that pixel format transformations are afine for
+ * non SRGB formats.
+ */
+static const struct util_format_test_case
+test_cases[] =
+{
+   {PIPE_FORMAT_R5G6B5_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x0000), {0.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_R5G6B5_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x001f), {0.0, 0.0, 1.0, 1.0}},
+   {PIPE_FORMAT_R5G6B5_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x07e0), {0.0, 1.0, 0.0, 1.0}},
+   {PIPE_FORMAT_R5G6B5_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xf800), {1.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_R5G6B5_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xffff), {1.0, 1.0, 1.0, 1.0}},
+
+   {PIPE_FORMAT_A1R5G5B5_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x0000), {0.0, 0.0, 0.0, 0.0}},
+   {PIPE_FORMAT_A1R5G5B5_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x001f), {0.0, 0.0, 1.0, 0.0}},
+   {PIPE_FORMAT_A1R5G5B5_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x03e0), {0.0, 1.0, 0.0, 0.0}},
+   {PIPE_FORMAT_A1R5G5B5_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x7c00), {1.0, 0.0, 0.0, 0.0}},
+   {PIPE_FORMAT_A1R5G5B5_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x8000), {0.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_A1R5G5B5_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xffff), {1.0, 1.0, 1.0, 1.0}},
+
+   {PIPE_FORMAT_A4R4G4B4_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x0000), {0.0, 0.0, 0.0, 0.0}},
+   {PIPE_FORMAT_A4R4G4B4_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x000f), {0.0, 0.0, 1.0, 0.0}},
+   {PIPE_FORMAT_A4R4G4B4_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x00f0), {0.0, 1.0, 0.0, 0.0}},
+   {PIPE_FORMAT_A4R4G4B4_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x0f00), {1.0, 0.0, 0.0, 0.0}},
+   {PIPE_FORMAT_A4R4G4B4_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xf000), {0.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_A4R4G4B4_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xffff), {1.0, 1.0, 1.0, 1.0}},
+
+   {PIPE_FORMAT_A2B10G10R10_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00000000), {0.0, 0.0, 0.0, 0.0}},
+   {PIPE_FORMAT_A2B10G10R10_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x000003ff), {1.0, 0.0, 0.0, 0.0}},
+   {PIPE_FORMAT_A2B10G10R10_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x000ffc00), {0.0, 1.0, 0.0, 0.0}},
+   {PIPE_FORMAT_A2B10G10R10_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x3ff00000), {0.0, 0.0, 1.0, 0.0}},
+   {PIPE_FORMAT_A2B10G10R10_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xc0000000), {0.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_A2B10G10R10_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xffffffff), {1.0, 1.0, 1.0, 1.0}},
+
+   {PIPE_FORMAT_A8R8G8B8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00000000), {0.0, 0.0, 0.0, 0.0}},
+   {PIPE_FORMAT_A8R8G8B8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000ff), {0.0, 0.0, 1.0, 0.0}},
+   {PIPE_FORMAT_A8R8G8B8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000ff00), {0.0, 1.0, 0.0, 0.0}},
+   {PIPE_FORMAT_A8R8G8B8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00ff0000), {1.0, 0.0, 0.0, 0.0}},
+   {PIPE_FORMAT_A8R8G8B8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xff000000), {0.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_A8R8G8B8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xffffffff), {1.0, 1.0, 1.0, 1.0}},
+
+   {PIPE_FORMAT_X8R8G8B8_UNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00000000), {0.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_X8R8G8B8_UNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x000000ff), {0.0, 0.0, 1.0, 1.0}},
+   {PIPE_FORMAT_X8R8G8B8_UNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x0000ff00), {0.0, 1.0, 0.0, 1.0}},
+   {PIPE_FORMAT_X8R8G8B8_UNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00ff0000), {1.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_X8R8G8B8_UNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0xff000000), {0.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_X8R8G8B8_UNORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0xffffffff), {1.0, 1.0, 1.0, 1.0}},
+
+   {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00000000), {0.0, 0.0, 0.0, 0.0}},
+   {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000ff), {0.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000ff00), {1.0, 0.0, 0.0, 0.0}},
+   {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00ff0000), {0.0, 1.0, 0.0, 0.0}},
+   {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xff000000), {0.0, 0.0, 1.0, 0.0}},
+   {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xffffffff), {1.0, 1.0, 1.0, 1.0}},
+
+   {PIPE_FORMAT_B8G8R8X8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0x00000000), {0.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_B8G8R8X8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0x000000ff), {0.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_B8G8R8X8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0x0000ff00), {1.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_B8G8R8X8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0x00ff0000), {0.0, 1.0, 0.0, 1.0}},
+   {PIPE_FORMAT_B8G8R8X8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0xff000000), {0.0, 0.0, 1.0, 1.0}},
+   {PIPE_FORMAT_B8G8R8X8_UNORM, PACKED_1x32(0xffffff00), PACKED_1x32(0xffffffff), {1.0, 1.0, 1.0, 1.0}},
+
+#if 0
+   {PIPE_FORMAT_R8G8B8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00000000), {0.0, 0.0, 0.0, 0.0}},
+   {PIPE_FORMAT_R8G8B8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000ff), {0.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_R8G8B8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000ff00), {0.0, 0.0, 1.0, 0.0}},
+   {PIPE_FORMAT_R8G8B8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00ff0000), {0.0, 1.0, 0.0, 0.0}},
+   {PIPE_FORMAT_R8G8B8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xff000000), {1.0, 0.0, 0.0, 0.0}},
+   {PIPE_FORMAT_R8G8B8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xffffffff), {1.0, 1.0, 1.0, 1.0}},
+#endif
+
+   {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00000000), {0.0, 0.0, 0.0, 0.0}},
+   {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x000000ff), {0.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000ff00), {1.0, 0.0, 0.0, 0.0}},
+   {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00ff0000), {0.0, 1.0, 0.0, 0.0}},
+   {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xff000000), {0.0, 0.0, 1.0, 0.0}},
+   {PIPE_FORMAT_B8G8R8A8_UNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0xffffffff), {1.0, 1.0, 1.0, 1.0}},
+
+   {PIPE_FORMAT_L8_UNORM, PACKED_1x8(0xff), PACKED_1x8(0x00), {0.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_L8_UNORM, PACKED_1x8(0xff), PACKED_1x8(0xff), {1.0, 1.0, 1.0, 1.0}},
+
+   {PIPE_FORMAT_A8_UNORM, PACKED_1x8(0xff), PACKED_1x8(0x00), {0.0, 0.0, 0.0, 0.0}},
+   {PIPE_FORMAT_A8_UNORM, PACKED_1x8(0xff), PACKED_1x8(0xff), {0.0, 0.0, 0.0, 1.0}},
+
+   {PIPE_FORMAT_I8_UNORM, PACKED_1x8(0xff), PACKED_1x8(0x00), {0.0, 0.0, 0.0, 0.0}},
+   {PIPE_FORMAT_I8_UNORM, PACKED_1x8(0xff), PACKED_1x8(0xff), {1.0, 1.0, 1.0, 1.0}},
+
+   {PIPE_FORMAT_A8L8_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x0000), {0.0, 0.0, 0.0, 0.0}},
+   {PIPE_FORMAT_A8L8_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x00ff), {1.0, 1.0, 1.0, 0.0}},
+   {PIPE_FORMAT_A8L8_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xff00), {0.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_A8L8_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xffff), {1.0, 1.0, 1.0, 1.0}},
+
+   {PIPE_FORMAT_L16_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0x0000), {0.0, 0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_L16_UNORM, PACKED_1x16(0xffff), PACKED_1x16(0xffff), {1.0, 1.0, 1.0, 1.0}},
+
+   {PIPE_FORMAT_A8B8G8R8_SNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00000000), { 0.0,  0.0,  0.0,  0.0}},
+   {PIPE_FORMAT_A8B8G8R8_SNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x0000007f), { 1.0,  0.0,  0.0,  0.0}},
+   {PIPE_FORMAT_A8B8G8R8_SNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00000081), {-1.0,  0.0,  0.0,  0.0}},
+   {PIPE_FORMAT_A8B8G8R8_SNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00007f00), { 0.0,  1.0,  0.0,  0.0}},
+   {PIPE_FORMAT_A8B8G8R8_SNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00008100), { 0.0, -1.0,  0.0,  0.0}},
+   {PIPE_FORMAT_A8B8G8R8_SNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x007f0000), { 0.0,  0.0,  1.0,  0.0}},
+   {PIPE_FORMAT_A8B8G8R8_SNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x00810000), { 0.0,  0.0, -1.0,  0.0}},
+   {PIPE_FORMAT_A8B8G8R8_SNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x7f000000), { 0.0,  0.0,  0.0,  1.0}},
+   {PIPE_FORMAT_A8B8G8R8_SNORM, PACKED_1x32(0xffffffff), PACKED_1x32(0x81000000), { 0.0,  0.0,  0.0, -1.0}},
+
+   {PIPE_FORMAT_X8UB8UG8SR8S_NORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00000000), { 0.0,  0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_X8UB8UG8SR8S_NORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x0000007f), { 1.0,  0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_X8UB8UG8SR8S_NORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00000081), {-1.0,  0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_X8UB8UG8SR8S_NORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00007f00), { 0.0,  1.0, 0.0, 1.0}},
+   {PIPE_FORMAT_X8UB8UG8SR8S_NORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00008100), { 0.0, -1.0, 0.0, 1.0}},
+   {PIPE_FORMAT_X8UB8UG8SR8S_NORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0x00ff0000), { 0.0,  0.0, 1.0, 1.0}},
+   {PIPE_FORMAT_X8UB8UG8SR8S_NORM, PACKED_1x32(0x00ffffff), PACKED_1x32(0xff000000), { 0.0,  0.0, 0.0, 1.0}},
+
+   {PIPE_FORMAT_B6UG5SR5S_NORM, PACKED_1x16(0xffff), PACKED_1x16(0x0000), { 0.0,  0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_B6UG5SR5S_NORM, PACKED_1x16(0xffff), PACKED_1x16(0x000f), { 1.0,  0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_B6UG5SR5S_NORM, PACKED_1x16(0xffff), PACKED_1x16(0x0011), {-1.0,  0.0, 0.0, 1.0}},
+   {PIPE_FORMAT_B6UG5SR5S_NORM, PACKED_1x16(0xffff), PACKED_1x16(0x01e0), { 0.0,  1.0, 0.0, 1.0}},
+   {PIPE_FORMAT_B6UG5SR5S_NORM, PACKED_1x16(0xffff), PACKED_1x16(0x0220), { 0.0, -1.0, 0.0, 1.0}},
+   {PIPE_FORMAT_B6UG5SR5S_NORM, PACKED_1x16(0xffff), PACKED_1x16(0xfc00), { 0.0,  0.0, 1.0, 1.0}},
+};
+
+
+static boolean
+test_format_unpack(const struct util_format_test_case *test)
+{
+   float unpacked[4];
+   unsigned i;
+   boolean success;
+
+   util_format_unpack_4f(test->format, unpacked, test->packed);
+
+   success = TRUE;
+   for (i = 0; i < 4; ++i)
+      if (test->unpacked[i] != unpacked[i])
+         success = FALSE;
+
+   if (!success) {
+      printf("FAILED: (%f %f %f %f) obtained\n", unpacked[0], unpacked[1], unpacked[2], unpacked[3]);
+      printf("        (%f %f %f %f) expected\n", test->unpacked[0], test->unpacked[1], test->unpacked[2], test->unpacked[3]);
+   }
+
+   return success;
+}
+
+
+static boolean
+test_format_pack(const struct util_format_test_case *test)
+{
+   uint8_t packed[MAX_PACKED_BYTES];
+   unsigned i;
+   boolean success;
+
+   memset(packed, 0, sizeof packed);
+
+   util_format_pack_4f(test->format, packed, test->unpacked[0], test->unpacked[1], test->unpacked[2], test->unpacked[3]);
+
+   success = TRUE;
+   for (i = 0; i < MAX_PACKED_BYTES; ++i)
+      if ((test->packed[i] & test->mask[i]) != (packed[i] & test->mask[i]))
+         success = FALSE;
+
+   if (!success) {
+      printf("FAILED: (%02x %02x %02x %02x) obtained\n", packed[0], packed[1], packed[2], packed[3]);
+      printf("        (%02x %02x %02x %02x) expected\n", test->packed[0], test->packed[1], test->packed[2], test->packed[3]);
+   }
+
+   return success;
+}
+
+
+static boolean
+test_all(void)
+{
+   enum pipe_format last_format = PIPE_FORMAT_NONE;
+   unsigned i;
+   bool success = TRUE;
+
+   for (i = 0; i < sizeof(test_cases)/sizeof(test_cases[0]); ++i) {
+      if (test_cases[i].format != last_format) {
+         const struct util_format_description *format_desc;
+         format_desc = util_format_description(test_cases[i].format);
+         fprintf(stderr, "Testing %s ...\n", format_desc->name);
+         last_format = test_cases[i].format;
+      }
+
+      if (!test_format_pack(&test_cases[i]))
+        success = FALSE;
+
+      if (!test_format_unpack(&test_cases[i]))
+        success = FALSE;
+   }
+
+   return success;
+}
+
+
+int main(int argc, char **argv)
+{
+   boolean success;
+
+   success = test_all();
+
+   return success ? 0 : 1;
+}