r600g: fix queries and predication

[mesa.git] / src / gallium / drivers / r600 / r600_formats.h

diff --git a/src/gallium/drivers/r600/r600_formats.h b/src/gallium/drivers/r600/r600_formats.h
index ae0bc432ad23b3e77e04fa5568204ef3bf261f4e..1c1089d89d2d2b52454edd9afaedc7e9ee783eac 100644 (file)
--- a/src/gallium/drivers/r600/r600_formats.h
+++ b/src/gallium/drivers/r600/r600_formats.h
@@ -81,4 +81,36 @@ static INLINE unsigned r600_endian_swap(unsigned size)
        }
 }
 
+static INLINE bool r600_is_vertex_format_supported(enum pipe_format format)
+{
+       const struct util_format_description *desc = util_format_description(format);
+       unsigned i;
+
+       if (!desc)
+               return false;
+
+       /* Find the first non-VOID channel. */
+       for (i = 0; i < 4; i++) {
+               if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID)
+                       break;
+       }
+       if (i == 4)
+               return false;
+
+       /* No fixed, no double. */
+       if (desc->layout != UTIL_FORMAT_LAYOUT_PLAIN ||
+           desc->channel[i].type == UTIL_FORMAT_TYPE_FIXED ||
+           (desc->channel[i].size == 64 &&
+            desc->channel[i].type == UTIL_FORMAT_TYPE_FLOAT))
+               return false;
+
+       /* No scaled/norm formats with 32 bits per channel. */
+       if (desc->channel[i].size == 32 &&
+           (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED ||
+            desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED))
+               return false;
+
+       return true;
+}
+
 #endif