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i965: Allow 8x MSAA on >= 64bpp formats on Gen8+.

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See commit 3b0279a69 - this restriction is documented in the "Surface
Format" field of RENDER_SURFACE_STATE.

Looking at newer documentation, this restriction appears to exist on
Haswell, but no longer applies on Gen8+.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
This commit is contained in:
Kenneth Graunke 2016-04-04 00:45:25 -07:00
parent 1eeec7ec41
commit 3aa51e02d6
1 changed files with 2 additions and 1 deletions
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3
src/mesa/drivers/dri/i965/brw_surface_formats.c
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@ -806,7 +806,8 @@ brw_render_target_supported(struct brw_context *brw,
/* Under some conditions, MSAA is not supported for formats whose width is
* more than 64 bits.
*/
if (rb->NumSamples > 0 && _mesa_get_format_bytes(format) > 8) {
if (brw->gen < 8 &&
rb->NumSamples > 0 && _mesa_get_format_bytes(format) > 8) {
/* Gen6: MSAA on >64 bit formats is unsupported. */
if (brw->gen <= 6)
return false;