diff options
| -rw-r--r-- | src/intel/isl/isl.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/intel/isl/isl.c b/src/intel/isl/isl.c index 1a47da52579..d1fb7e4580d 100644 --- a/src/intel/isl/isl.c +++ b/src/intel/isl/isl.c @@ -1417,6 +1417,16 @@ isl_surf_get_mcs_surf(const struct isl_device *dev, assert(surf->levels == 1); assert(surf->logical_level0_px.depth == 1); + /* The "Auxiliary Surface Pitch" field in RENDER_SURFACE_STATE is only 9 + * bits which means the maximum pitch of a compression surface is 512 + * tiles or 64KB (since MCS is always Y-tiled). Since a 16x MCS buffer is + * 64bpp, this gives us a maximum width of 8192 pixels. We can create + * larger multisampled surfaces, we just can't compress them. For 2x, 4x, + * and 8x, we have enough room for the full 16k supported by the hardware. + */ + if (surf->samples == 16 && surf->logical_level0_px.width > 8192) + return false; + enum isl_format mcs_format; switch (surf->samples) { case 2: mcs_format = ISL_FORMAT_MCS_2X; break; |