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tgsi: introduce NonHelperMask

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This is a mask of which of the current 2x2 grid are non-helper
invocations. This allows us to mask off the helper invocations
later for the image operations.

Reviewed-by: Brian Paul <brianp@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2016-03-22 07:50:37 +10:00
parent ca180c09bb
commit 827393b76f
2 changed files with 5 additions and 0 deletions
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2
src/gallium/auxiliary/tgsi/tgsi_exec.c
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@ -5199,6 +5199,8 @@ tgsi_exec_machine_run( struct tgsi_exec_machine *mach )
default_mask = 0x1;
}
if (mach->NonHelperMask == 0)
mach->NonHelperMask = default_mask;
mach->CondMask = default_mask;
mach->LoopMask = default_mask;
mach->ContMask = default_mask;

3
src/gallium/auxiliary/tgsi/tgsi_exec.h
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@ -312,6 +312,9 @@ struct tgsi_exec_machine
struct tgsi_exec_vector QuadPos;
float Face; /**< +1 if front facing, -1 if back facing */
bool flatshade_color;
/* See GLSL 4.50 specification for definition of helper invocations */
uint NonHelperMask; /**< non-helpers */
/* Conditional execution masks */
uint CondMask; /**< For IF/ELSE/ENDIF */
uint LoopMask; /**< For BGNLOOP/ENDLOOP */