mesa: Add the format enums for BPTC-compressed images

This adds the following four Mesa image format enums which correspond to the
four BPTC compressed texture formats:

 MESA_FORMAT_BPTC_RGBA_UNORM
 MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM
 MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT
 MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT

It also updates the format information functions to handle these and the
corresponding GL enums.

v2: Also modify _mesa_get_format_color_encoding, _mesa_get_srgb_format_linear
    and _mesa_get_uncompressed_format

Reviewed-by: Ian Romanick <[email protected]>

1 files changed, 24 insertions, 0 deletions

diff --git a/src/mesa/swrast/s_texfetch.c b/src/mesa/swrast/s_texfetch.c
index aef02321764..38d71caa38b 100644
--- a/src/mesa/swrast/s_texfetch.c
+++ b/src/mesa/swrast/s_texfetch.c
@@ -512,6 +512,30 @@ texfetch_funcs[] =
       fetch_compressed,
       fetch_compressed,
       fetch_compressed
+   },
+   {
+      MESA_FORMAT_BPTC_RGBA_UNORM,
+      fetch_compressed,
+      fetch_compressed,
+      fetch_compressed
+   },
+   {
+      MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM,
+      fetch_compressed,
+      fetch_compressed,
+      fetch_compressed
+   },
+   {
+      MESA_FORMAT_BPTC_RGB_SIGNED_FLOAT,
+      fetch_compressed,
+      fetch_compressed,
+      fetch_compressed
+   },
+   {
+      MESA_FORMAT_BPTC_RGB_UNSIGNED_FLOAT,
+      fetch_compressed,
+      fetch_compressed,
+      fetch_compressed
    }
 };