mesa: fix incorrect approx bits/channel for fxt1 formats

See bug 24806.

diff --git a/src/mesa/main/formats.c b/src/mesa/main/formats.c
index e9b33e489a36b536287c13af9dbb4d0ccd993957..7d0e2d29143e9ed74b0e01c2d9946525108eee78 100644 (file)
--- a/src/mesa/main/formats.c
+++ b/src/mesa/main/formats.c
@@ -444,7 +444,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
       "MESA_FORMAT_RGB_FXT1",
       GL_RGB,
       GL_UNSIGNED_NORMALIZED,
-      8, 8, 8, 0,
+      4, 4, 4, 0,                  /* approx Red/Green/BlueBits */
       0, 0, 0, 0, 0,
       8, 4, 16                     /* 16 bytes per 8x4 block */
    },
@@ -453,7 +453,7 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
       "MESA_FORMAT_RGBA_FXT1",
       GL_RGBA,
       GL_UNSIGNED_NORMALIZED,
-      8, 8, 8, 8,
+      4, 4, 4, 1,                  /* approx Red/Green/Blue/AlphaBits */
       0, 0, 0, 0, 0,
       8, 4, 16                     /* 16 bytes per 8x4 block */
    },