static dri_bo *
clip_unit_create_from_key(struct brw_context *brw,
struct brw_clip_unit_key *key)
{
struct brw_clip_unit_state clip;
dri_bo *bo;
memset(&clip, 0, sizeof(clip));
clip.thread0.grf_reg_count = ALIGN(key->total_grf, 16) / 16 - 1;
/* reloc */
clip.thread0.kernel_start_pointer = brw->clip.prog_bo->offset >> 6;
clip.thread1.floating_point_mode = BRW_FLOATING_POINT_NON_IEEE_754;
clip.thread1.single_program_flow = 1;
clip.thread3.urb_entry_read_length = key->urb_entry_read_length;
clip.thread3.const_urb_entry_read_length = key->curb_entry_read_length;
clip.thread3.const_urb_entry_read_offset = key->curbe_offset * 2;
clip.thread3.dispatch_grf_start_reg = 1;
clip.thread3.urb_entry_read_offset = 0;
clip.thread4.nr_urb_entries = key->nr_urb_entries;
clip.thread4.urb_entry_allocation_size = key->urb_size - 1;
clip.thread4.max_threads = 1; /* 2 threads */
if (INTEL_DEBUG & DEBUG_STATS)
clip.thread4.stats_enable = 1;
clip.clip5.userclip_enable_flags = 0x7f;
clip.clip5.userclip_must_clip = 1;
clip.clip5.guard_band_enable = 0;
clip.clip5.viewport_z_clip_enable = 1;
clip.clip5.viewport_xy_clip_enable = 1;
clip.clip5.vertex_position_space = BRW_CLIP_NDCSPACE;
clip.clip5.api_mode = BRW_CLIP_API_OGL;
clip.clip5.clip_mode = key->clip_mode;
if (BRW_IS_GM45(brw) || BRW_IS_G4X(brw))
clip.clip5.negative_w_clip_test = 1;
clip.clip6.clipper_viewport_state_ptr = 0;
clip.viewport_xmin = -1;
clip.viewport_xmax = 1;
clip.viewport_ymin = -1;
clip.viewport_ymax = 1;
bo = brw_upload_cache(&brw->cache, BRW_CLIP_UNIT,
key, sizeof(*key),
&brw->clip.prog_bo, 1,
&clip, sizeof(clip),
NULL, NULL);
/* Emit clip program relocation */
assert(brw->clip.prog_bo);
dri_emit_reloc(bo,
DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_READ,
clip.thread0.grf_reg_count << 1,
offsetof(struct brw_clip_unit_state, thread0),
brw->clip.prog_bo);
return bo;
}
static enum pipe_error
clip_unit_create_from_key(struct brw_context *brw,
struct brw_clip_unit_key *key,
struct brw_winsys_reloc *reloc,
struct brw_winsys_buffer **bo_out)
{
struct brw_clip_unit_state clip;
enum pipe_error ret;
memset(&clip, 0, sizeof(clip));
clip.thread0.grf_reg_count = align(key->total_grf, 16) / 16 - 1;
/* reloc */
clip.thread0.kernel_start_pointer = 0;
clip.thread1.floating_point_mode = BRW_FLOATING_POINT_NON_IEEE_754;
clip.thread1.single_program_flow = 1;
clip.thread3.urb_entry_read_length = key->urb_entry_read_length;
clip.thread3.const_urb_entry_read_length = key->curb_entry_read_length;
clip.thread3.const_urb_entry_read_offset = key->curbe_offset * 2;
clip.thread3.dispatch_grf_start_reg = 1;
clip.thread3.urb_entry_read_offset = 0;
clip.thread4.nr_urb_entries = key->nr_urb_entries;
clip.thread4.urb_entry_allocation_size = key->urb_size - 1;
/* If we have enough clip URB entries to run two threads, do so.
*/
if (key->nr_urb_entries >= 10) {
/* Half of the URB entries go to each thread, and it has to be an
* even number.
*/
assert(key->nr_urb_entries % 2 == 0);
/* Although up to 16 concurrent Clip threads are allowed on IGDNG,
* only 2 threads can output VUEs at a time.
*/
if (BRW_IS_IGDNG(brw))
clip.thread4.max_threads = 16 - 1;
else
clip.thread4.max_threads = 2 - 1;
} else {
assert(key->nr_urb_entries >= 5);
clip.thread4.max_threads = 1 - 1;
}
if (BRW_DEBUG & DEBUG_SINGLE_THREAD)
clip.thread4.max_threads = 0;
if (BRW_DEBUG & DEBUG_STATS)
clip.thread4.stats_enable = 1;
clip.clip5.userclip_enable_flags = 0x7f;
clip.clip5.userclip_must_clip = 1;
clip.clip5.guard_band_enable = 0;
if (!key->depth_clamp)
clip.clip5.viewport_z_clip_enable = 1;
clip.clip5.viewport_xy_clip_enable = 1;
clip.clip5.vertex_position_space = BRW_CLIP_NDCSPACE;
clip.clip5.api_mode = BRW_CLIP_API_OGL;
clip.clip5.clip_mode = key->clip_mode;
if (BRW_IS_G4X(brw))
clip.clip5.negative_w_clip_test = 1;
clip.clip6.clipper_viewport_state_ptr = 0;
clip.viewport_xmin = -1;
clip.viewport_xmax = 1;
clip.viewport_ymin = -1;
clip.viewport_ymax = 1;
ret = brw_upload_cache(&brw->cache, BRW_CLIP_UNIT,
key, sizeof(*key),
reloc, 1,
&clip, sizeof(clip),
NULL, NULL,
bo_out);
if (ret)
return ret;
return PIPE_OK;
}
