Sky Lake and above can fast-clear exactly the same set of formats as
older hardware. The only restriction is that you can't *texture* from
it unless the format supports CCS_E but you can fast-clear and render to
it just fine. All of the code exists and now that we have sane resolves,
we can trivially turn it on.
Reviewed-by: Topi Pohjolainen <topi.pohjolai...@intel.com>
---
src/mesa/drivers/dri/i965/intel_mipmap_tree.c | 18 ++++--------------
1 file changed, 4 insertions(+), 14 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index 02e74ca..c19d2d5 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -207,13 +207,7 @@ intel_miptree_supports_non_msrt_fast_clear(struct
brw_context *brw,
if (!brw->format_supported_as_render_target[mt->format])
return false;
- if (brw->gen >= 9) {
- mesa_format linear_format = _mesa_get_srgb_format_linear(mt->format);
- const enum isl_format isl_format =
- brw_isl_format_for_mesa_format(linear_format);
- return isl_format_supports_ccs_e(&brw->screen->devinfo, isl_format);
- } else
- return true;
+ return true;
}
/* On Gen9 support for color buffer compression was extended to single
@@ -257,16 +251,12 @@ intel_miptree_supports_lossless_compressed(struct
brw_context *brw,
if (_mesa_get_format_datatype(mt->format) == GL_FLOAT)
return false;
- /* Fast clear mechanism and lossless compression go hand in hand. */
+ /* Fast clear support is a pre-requisite for lossless compression */
if (!intel_miptree_supports_non_msrt_fast_clear(brw, mt))
return false;
- /* Fast clear can be also used to clear srgb surfaces by using equivalent
- * linear format. This trick, however, can't be extended to be used with
- * lossless compression and therefore a check is needed to see if the format
- * really is linear.
- */
- return _mesa_get_srgb_format_linear(mt->format) == mt->format;
+ enum isl_format isl_format = brw_isl_format_for_mesa_format(mt->format);
+ return isl_format_supports_ccs_e(&brw->screen->devinfo, isl_format);
}
/**
--
2.5.0.400.gff86faf
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