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i965: Refactor check if color resolve is needed 

Signed-off-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Topi Pohjolainen 2016-06-10 09:01:54 +03:00
parent ea2c419600
commit 6859d2ba2e
1 changed files with 28 additions and 15 deletions
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43
src/mesa/drivers/dri/i965/intel_mipmap_tree.c
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@ -2280,6 +2280,31 @@ intel_miptree_used_for_rendering(const struct brw_context *brw,
}
}
static bool
intel_miptree_needs_color_resolve(const struct brw_context *brw,
const struct intel_mipmap_tree *mt,
int flags)
{
if (mt->no_ccs)
return false;
const bool is_lossless_compressed =
intel_miptree_is_lossless_compressed(brw, mt);
/* From gen9 onwards there is new compression scheme for single sampled
* surfaces called "lossless compressed". These don't need to be always
* resolved.
*/
if ((flags & INTEL_MIPTREE_IGNORE_CCS_E) && is_lossless_compressed)
return false;
/* Fast color clear resolves only make sense for non-MSAA buffers. */
if (mt->msaa_layout != INTEL_MSAA_LAYOUT_NONE && !is_lossless_compressed)
return false;
return true;
}
bool
intel_miptree_resolve_color(struct brw_context *brw,
struct intel_mipmap_tree *mt, unsigned level,
@ -2288,12 +2313,7 @@ intel_miptree_resolve_color(struct brw_context *brw,
{
intel_miptree_check_color_resolve(mt, level, start_layer);
/* From gen9 onwards there is new compression scheme for single sampled
* surfaces called "lossless compressed". These don't need to be always
* resolved.
*/
if ((flags & INTEL_MIPTREE_IGNORE_CCS_E) &&
intel_miptree_is_lossless_compressed(brw, mt))
if (!intel_miptree_needs_color_resolve(brw, mt, flags))
return false;
switch (mt->fast_clear_state) {
@ -2304,15 +2324,8 @@ intel_miptree_resolve_color(struct brw_context *brw,
case INTEL_FAST_CLEAR_STATE_CLEAR:
/* For now arrayed fast clear is not supported. */
assert(num_layers == 1);
/* Fast color clear resolves only make sense for non-MSAA buffers. */
if (mt->msaa_layout == INTEL_MSAA_LAYOUT_NONE ||
intel_miptree_is_lossless_compressed(brw, mt)) {
brw_blorp_resolve_color(brw, mt, level, start_layer);
return true;
} else {
return false;
}
brw_blorp_resolve_color(brw, mt, level, start_layer);
return true;
default:
unreachable("Invalid fast clear state");
}