void brw_clip_emit_vue(struct brw_clip_compile *c,
struct brw_indirect vert,
GLboolean allocate,
GLboolean eot,
GLuint header)
{
struct brw_compile *p = &c->func;
GLuint start = c->last_mrf;
brw_clip_ff_sync(c);
assert(!(allocate && eot));
/* Cycle through mrf regs - probably futile as we have to wait for
* the allocation response anyway. Also, the order this function
* is invoked doesn't correspond to the order the instructions will
* be executed, so it won't have any effect in many cases.
*/
#if 0
if (start + c->nr_regs + 1 >= MAX_MRF)
start = 0;
c->last_mrf = start + c->nr_regs + 1;
#endif
/* Copy the vertex from vertn into m1..mN+1:
*/
brw_copy_from_indirect(p, brw_message_reg(start+1), vert, c->nr_regs);
/* Overwrite PrimType and PrimStart in the message header, for
* each vertex in turn:
*/
brw_MOV(p, get_element_ud(c->reg.R0, 2), brw_imm_ud(header));
/* Send each vertex as a seperate write to the urb. This
* is different to the concept in brw_sf_emit.c, where
* subsequent writes are used to build up a single urb
* entry. Each of these writes instantiates a seperate
* urb entry - (I think... what about 'allocate'?)
*/
brw_urb_WRITE(p,
allocate ? c->reg.R0 : retype(brw_null_reg(), BRW_REGISTER_TYPE_UD),
start,
c->reg.R0,
allocate,
1, /* used */
c->nr_regs + 1, /* msg length */
allocate ? 1 : 0, /* response_length */
eot, /* eot */
1, /* writes_complete */
0, /* urb offset */
BRW_URB_SWIZZLE_NONE);
}
void brw_clip_emit_vue(struct brw_clip_compile *c,
struct brw_indirect vert,
enum brw_urb_write_flags flags,
GLuint header)
{
struct brw_codegen *p = &c->func;
bool allocate = flags & BRW_URB_WRITE_ALLOCATE;
brw_clip_ff_sync(c);
/* Any URB entry that is allocated must subsequently be used or discarded,
* so it doesn't make sense to mark EOT and ALLOCATE at the same time.
*/
assert(!(allocate && (flags & BRW_URB_WRITE_EOT)));
/* Copy the vertex from vertn into m1..mN+1:
*/
brw_copy_from_indirect(p, brw_message_reg(1), vert, c->nr_regs);
/* Overwrite PrimType and PrimStart in the message header, for
* each vertex in turn:
*/
brw_MOV(p, get_element_ud(c->reg.R0, 2), brw_imm_ud(header));
/* Send each vertex as a separate write to the urb. This
* is different to the concept in brw_sf_emit.c, where
* subsequent writes are used to build up a single urb
* entry. Each of these writes instantiates a separate
* urb entry - (I think... what about 'allocate'?)
*/
brw_urb_WRITE(p,
allocate ? c->reg.R0 : retype(brw_null_reg(), BRW_REGISTER_TYPE_UD),
0,
c->reg.R0,
flags,
c->nr_regs + 1, /* msg length */
allocate ? 1 : 0, /* response_length */
0, /* urb offset */
BRW_URB_SWIZZLE_NONE);
}
void brw_clip_emit_vue(struct brw_clip_compile *c,
struct brw_indirect vert,
bool allocate,
bool eot,
GLuint header)
{
struct brw_compile *p = &c->func;
brw_clip_ff_sync(c);
assert(!(allocate && eot));
/* Copy the vertex from vertn into m1..mN+1:
*/
brw_copy_from_indirect(p, brw_message_reg(1), vert, c->nr_regs);
/* Overwrite PrimType and PrimStart in the message header, for
* each vertex in turn:
*/
brw_MOV(p, get_element_ud(c->reg.R0, 2), brw_imm_ud(header));
/* Send each vertex as a seperate write to the urb. This
* is different to the concept in brw_sf_emit.c, where
* subsequent writes are used to build up a single urb
* entry. Each of these writes instantiates a seperate
* urb entry - (I think... what about 'allocate'?)
*/
brw_urb_WRITE(p,
allocate ? c->reg.R0 : retype(brw_null_reg(), BRW_REGISTER_TYPE_UD),
0,
c->reg.R0,
allocate,
1, /* used */
c->nr_regs + 1, /* msg length */
allocate ? 1 : 0, /* response_length */
eot, /* eot */
1, /* writes_complete */
0, /* urb offset */
BRW_URB_SWIZZLE_NONE);
}
