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i965: Micro-optimise check_state

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Replace the intermediate tests due to the logical or with the bitwise
or.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-02-20 15:36:52 +00:00
parent 50ade6ea69
commit 8ea6e98c7b
1 changed files with 5 additions and 7 deletions
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12
src/mesa/drivers/dri/i965/brw_state_upload.c
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@ -181,11 +181,11 @@ void brw_destroy_state( struct brw_context *brw )
/***********************************************************************
*/
static GLboolean check_state( const struct brw_state_flags *a,
const struct brw_state_flags *b )
static GLuint check_state( const struct brw_state_flags *a,
const struct brw_state_flags *b )
{
return ((a->mesa & b->mesa) ||
(a->brw & b->brw) ||
return ((a->mesa & b->mesa) |
(a->brw & b->brw) |
(a->cache & b->cache));
}
@ -377,9 +377,7 @@ void brw_validate_state( struct brw_context *brw )
brw->state.dirty.brw |= BRW_NEW_VERTEX_PROGRAM;
}
if (state->mesa == 0 &&
state->cache == 0 &&
state->brw == 0)
if ((state->mesa | state->cache | state->brw) == 0)
return;
brw->intel.Fallback = GL_FALSE; /* boolean, not bitfield */