isl: make format layout channels accessible by index

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Chad Versace <chadversary@chromium.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

diff --git a/src/intel/isl/isl.h b/src/intel/isl/isl.h
index df275f85c49add757a27d77c059655a0236827ac..98de4c0f57f7fc67ba80e3d84a7d7134458e8538 100644 (file)
--- a/src/intel/isl/isl.h
+++ b/src/intel/isl/isl.h
@@ -994,15 +994,18 @@ struct isl_format_layout {
    uint8_t bh; /**< Block height, in pixels */
    uint8_t bd; /**< Block depth, in pixels */
 
-   struct {
-      struct isl_channel_layout r; /**< Red channel */
-      struct isl_channel_layout g; /**< Green channel */
-      struct isl_channel_layout b; /**< Blue channel */
-      struct isl_channel_layout a; /**< Alpha channel */
-      struct isl_channel_layout l; /**< Luminance channel */
-      struct isl_channel_layout i; /**< Intensity channel */
-      struct isl_channel_layout p; /**< Palette channel */
-   } channels;
+   union {
+      struct {
+         struct isl_channel_layout r; /**< Red channel */
+         struct isl_channel_layout g; /**< Green channel */
+         struct isl_channel_layout b; /**< Blue channel */
+         struct isl_channel_layout a; /**< Alpha channel */
+         struct isl_channel_layout l; /**< Luminance channel */
+         struct isl_channel_layout i; /**< Intensity channel */
+         struct isl_channel_layout p; /**< Palette channel */
+      } channels;
+      struct isl_channel_layout channels_array[7];
+   };
 
    enum isl_colorspace colorspace;
    enum isl_txc txc;