All the documentation I can find says that this bit (and functionality) only
exists on SKL+. Since the bit isn't yet used, there is no real impact here.
The original code was added by Ken here (a surprisingly long time ago):
commit f3c6d6f1e151f6a44a76038dccebe4434038dcb1
Author: Kenneth Graunke <kenn...@whitecape.org>
Date: Thu Nov 29 21:00:27 2012 -0800
i965: Update 3DSTATE_PS, 3DSTATE_WM, and add 3DSTATE_PS_EXTRA.
Cc: Kenneth Graunke <kenn...@whitecape.org>
Signed-off-by: Ben Widawsky <b...@bwidawsk.net>
---
src/mesa/drivers/dri/i965/brw_defines.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/mesa/drivers/dri/i965/brw_defines.h
b/src/mesa/drivers/dri/i965/brw_defines.h
index e06c9d6..215f454 100644
--- a/src/mesa/drivers/dri/i965/brw_defines.h
+++ b/src/mesa/drivers/dri/i965/brw_defines.h
@@ -2385,7 +2385,7 @@ enum brw_pixel_shader_coverage_mask_mode {
# define GEN8_PSX_ATTRIBUTE_ENABLE (1 << 8)
# define GEN8_PSX_SHADER_DISABLES_ALPHA_TO_COVERAGE (1 << 7)
# define GEN8_PSX_SHADER_IS_PER_SAMPLE (1 << 6)
-# define GEN8_PSX_SHADER_COMPUTES_STENCIL (1 << 5)
+# define GEN9_PSX_SHADER_COMPUTES_STENCIL (1 << 5)
# define GEN9_PSX_SHADER_PULLS_BARY (1 << 3)
# define GEN8_PSX_SHADER_HAS_UAV (1 << 2)
# define GEN8_PSX_SHADER_USES_INPUT_COVERAGE_MASK (1 << 1)
--
2.6.1
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