From ca6aacf842c0075f12907d13fec89cc7f1eac4f0 Mon Sep 17 00:00:00 2001
From: José Fonseca <jfonseca@vmware.com>
Date: Thu, 1 Apr 2010 13:34:24 +0100
Subject: util: Add test case for PIPE_FORMAT_DXT1_RGB.

---
 progs/gallium/unit/u_format_test.c          | 42 +++++++++++++++++++++++++----
 src/gallium/auxiliary/util/u_format_tests.c | 32 ++++++++++++++++++++++
 2 files changed, 69 insertions(+), 5 deletions(-)

diff --git a/progs/gallium/unit/u_format_test.c b/progs/gallium/unit/u_format_test.c
index 5d8ffcc6b2..9cead79589 100644
--- a/progs/gallium/unit/u_format_test.c
+++ b/progs/gallium/unit/u_format_test.c
@@ -28,9 +28,28 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#include <float.h>
 
 #include "util/u_format.h"
 #include "util/u_format_tests.h"
+#include "util/u_format_s3tc.h"
+
+
+static boolean
+compare_float(float x, float y)
+{
+   float error = y - x;
+
+   if (error < 0.0f)
+      error = -error;
+
+   if (error > FLT_EPSILON) {
+      printf("error = %g\n", error);
+      return FALSE;
+   }
+
+   return TRUE;
+}
 
 
 static void
@@ -126,7 +145,7 @@ test_format_fetch_float(const struct util_format_description *format_desc,
       for (j = 0; j < format_desc->block.width; ++j) {
          format_desc->fetch_float(unpacked[i][j], test->packed, j, i);
          for (k = 0; k < 4; ++k) {
-            if (test->unpacked[i][j][k] != unpacked[i][j][k]) {
+            if (!compare_float(test->unpacked[i][j][k], unpacked[i][j][k])) {
                success = FALSE;
             }
          }
@@ -156,7 +175,7 @@ test_format_unpack_float(const struct util_format_description *format_desc,
    for (i = 0; i < format_desc->block.height; ++i) {
       for (j = 0; j < format_desc->block.width; ++j) {
          for (k = 0; k < 4; ++k) {
-            if (test->unpacked[i][j][k] != unpacked[i][j][k]) {
+            if (!compare_float(test->unpacked[i][j][k], unpacked[i][j][k])) {
                success = FALSE;
             }
          }
@@ -313,15 +332,26 @@ test_one(test_func_t func, const char *suffix)
    for (i = 0; i < util_format_nr_test_cases; ++i) {
       const struct util_format_test_case *test = &util_format_test_cases[i];
       const struct util_format_description *format_desc;
+      bool skip = FALSE;
+
       format_desc = util_format_description(test->format);
 
+      if (format_desc->layout == UTIL_FORMAT_LAYOUT_S3TC &&
+          !util_format_s3tc_enabled) {
+         skip = TRUE;
+      }
+
       if (test->format != last_format) {
-         printf("Testing util_format_%s_%s ...\n", format_desc->short_name, suffix);
+         printf("%s util_format_%s_%s ...\n",
+                skip ? "Skipping" : "Testing", format_desc->short_name, suffix);
          last_format = test->format;
       }
 
-      if (!func(format_desc, &util_format_test_cases[i]))
-        success = FALSE;
+      if (!skip) {
+         if (!func(format_desc, &util_format_test_cases[i])) {
+           success = FALSE;
+         }
+      }
    }
 
    return success;
@@ -356,6 +386,8 @@ int main(int argc, char **argv)
 {
    boolean success;
 
+   util_format_s3tc_init();
+
    success = test_all();
 
    return success ? 0 : 1;
diff --git a/src/gallium/auxiliary/util/u_format_tests.c b/src/gallium/auxiliary/util/u_format_tests.c
index a2195fb1a9..816f4fd985 100644
--- a/src/gallium/auxiliary/util/u_format_tests.c
+++ b/src/gallium/auxiliary/util/u_format_tests.c
@@ -38,6 +38,7 @@
 #define PACKED_2x8(x, y)       {x, y, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
 #define PACKED_3x8(x, y, z)    {x, y, z, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
 #define PACKED_4x8(x, y, z, w) {x, y, z, w, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
+#define PACKED_8x8(a, b, c, d, e, f, g, h) {a, b, c, d, e, f, g, h, 0, 0, 0, 0, 0, 0, 0, 0}
 
 #define PACKED_1x16(x)          {(x) & 0xff, (x) >> 8,          0,        0,          0,        0,          0,        0, 0, 0, 0, 0, 0, 0, 0, 0}
 #define PACKED_2x16(x, y)       {(x) & 0xff, (x) >> 8, (y) & 0xff, (y) >> 8,          0,        0,          0,        0, 0, 0, 0, 0, 0, 0, 0, 0}
@@ -207,6 +208,37 @@ util_format_test_cases[] =
     * TODO: Compressed formats
     */
 
+   {
+      PIPE_FORMAT_DXT1_RGB,
+      PACKED_8x8(0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff),
+      PACKED_8x8(0xf2, 0xd7, 0xb0, 0x20, 0xae, 0x2c, 0x6f, 0x97),
+      {
+         {
+            0x99/255.0, 0xb0/255.0, 0x8e/255.0, 0xff/255.0,
+            0x5d/255.0, 0x62/255.0, 0x89/255.0, 0xff/255.0,
+            0x99/255.0, 0xb0/255.0, 0x8e/255.0, 0xff/255.0,
+            0x99/255.0, 0xb0/255.0, 0x8e/255.0, 0xff/255.0
+         },
+         {
+            0xd6/255.0, 0xff/255.0, 0x94/255.0, 0xff/255.0,
+            0x5d/255.0, 0x62/255.0, 0x89/255.0, 0xff/255.0,
+            0x99/255.0, 0xb0/255.0, 0x8e/255.0, 0xff/255.0,
+            0xd6/255.0, 0xff/255.0, 0x94/255.0, 0xff/255.0
+         },
+         {
+            0x5d/255.0, 0x62/255.0, 0x89/255.0, 0xff/255.0,
+            0x5d/255.0, 0x62/255.0, 0x89/255.0, 0xff/255.0,
+            0x99/255.0, 0xb0/255.0, 0x8e/255.0, 0xff/255.0,
+            0x21/255.0, 0x14/255.0, 0x84/255.0, 0xff/255.0
+         },
+         {
+            0x5d/255.0, 0x62/255.0, 0x89/255.0, 0xff/255.0,
+            0x21/255.0, 0x14/255.0, 0x84/255.0, 0xff/255.0,
+            0x21/255.0, 0x14/255.0, 0x84/255.0, 0xff/255.0,
+            0x99/255.0, 0xb0/255.0, 0x8e/255.0, 0xff/255.0
+         }
+      }
+   },
 
    /*
     * Standard 8-bit integer formats
-- 
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