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i965/gen9: Don't do fast clears when GL_FRAMEBUFFER_SRGB is enabled

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When GL_FRAMEBUFFER_SRGB is enabled any single-sampled renderbuffers
are resolved in intel_update_state because the hardware can't cope
with fast clears on SRGB buffers. In that case it's pointless to do a
fast clear because it will just be immediately resolved.

Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
This commit is contained in:
Neil Roberts 2015-11-25 12:14:37 +01:00
parent 0033c81344
commit 583a5778f4
1 changed files with 11 additions and 0 deletions
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11
src/mesa/drivers/dri/i965/brw_meta_fast_clear.c
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@ -603,6 +603,17 @@ brw_meta_fast_clear(struct brw_context *brw, struct gl_framebuffer *fb,
brw->render_target_format[irb->mt->format])
clear_type = REP_CLEAR;
/* Gen9 doesn't support fast clear on single-sampled SRGB buffers. When
* GL_FRAMEBUFFER_SRGB is enabled any color renderbuffers will be
* resolved in intel_update_state. In that case it's pointless to do a
* fast clear because it's very likely to be immediately resolved.
*/
if (brw->gen >= 9 &&
irb->mt->num_samples <= 1 &&
brw->ctx.Color.sRGBEnabled &&
_mesa_get_srgb_format_linear(irb->mt->format) != irb->mt->format)
clear_type = REP_CLEAR;
if (irb->mt->fast_clear_state == INTEL_FAST_CLEAR_STATE_NO_MCS)
clear_type = REP_CLEAR;