diff options
Diffstat (limited to 'src/intel/isl/isl_format.c')
| -rw-r--r-- | src/intel/isl/isl_format.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/intel/isl/isl_format.c b/src/intel/isl/isl_format.c index fba3ac5e1ac..03c591071b6 100644 --- a/src/intel/isl/isl_format.c +++ b/src/intel/isl/isl_format.c @@ -536,6 +536,30 @@ isl_format_supports_ccs_e(const struct gen_device_info *devinfo, if (!format_info[format].exists) return false; + /* For simplicity, only report that a format supports CCS_E if blorp can + * perform bit-for-bit copies with an image of that format while compressed. + * This allows ISL users to avoid having to resolve the image before + * performing such a copy. We may want to change this behavior in the + * future. + * + * R11G11B10_FLOAT has no equivalent UINT format. Given how blorp_copy + * currently works, bit-for-bit copy operations are not possible without an + * intermediate resolve. + */ + if (format == ISL_FORMAT_R11G11B10_FLOAT) + return false; + + /* blorp_copy currently doesn't support formats with different bit-widths + * per-channel. Until that support is added, report that these formats don't + * support CCS_E. FIXME: Add support for these formats. + */ + if (format == ISL_FORMAT_B10G10R10A2_UNORM || + format == ISL_FORMAT_B10G10R10A2_UNORM_SRGB || + format == ISL_FORMAT_R10G10B10A2_UNORM || + format == ISL_FORMAT_R10G10B10A2_UINT) { + return false; + } + return format_gen(devinfo) >= format_info[format].ccs_e; } |