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i965/gen7.5: Allow HW primitive restart for all primitive types.

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Gen7.5 (Haswell) hardware supports primitive restart for all primitive
types.  It also handles all possible primitive restart indices.
Rather than specialize both can_cut_index_handle_restart_index() and
the switch statement in can_cut_index_handle_prims() for Haswell, just
return early if the hardware is Haswell because we know it can handle
everything.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
(cherry picked from commit 34efd9214d)
This commit is contained in:
Paul Berry 2013-04-05 20:15:39 -07:00 • committed by Kenneth Graunke
parent 0c0d21660e
commit f1c0c7b3b3
1 changed files with 6 additions and 7 deletions
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13
src/mesa/drivers/dri/i965/brw_primitive_restart.c
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@ -36,18 +36,12 @@
/**
* Check if the hardware's cut index support can handle the primitive
* restart index value.
* restart index value (pre-Haswell only).
*/
static bool
can_cut_index_handle_restart_index(struct gl_context *ctx,
const struct _mesa_index_buffer *ib)
{
struct intel_context *intel = intel_context(ctx);
/* Haswell supports an arbitrary cut index. */
if (intel->is_haswell)
return true;
bool cut_index_will_work;
switch (ib->type) {
@ -78,6 +72,7 @@ can_cut_index_handle_prims(struct gl_context *ctx,
GLuint nr_prims,
const struct _mesa_index_buffer *ib)
{
struct intel_context *intel = intel_context(ctx);
struct brw_context *brw = brw_context(ctx);
if (brw->sol.counting_primitives_generated ||
@ -90,6 +85,10 @@ can_cut_index_handle_prims(struct gl_context *ctx,
return false;
}
/* Otherwise Haswell can do it all. */
if (intel->is_haswell)
return true;
if (!can_cut_index_handle_restart_index(ctx, ib)) {
/* The primitive restart index can't be handled, so take
* the software path