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i965: Add Gen8+ tessellation evaluation shader state (3DSTATE_DS). 

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
This commit is contained in:
Kenneth Graunke 2015-11-10 14:35:27 -08:00
parent 86a6eda9bc
commit 37b0b11cef
1 changed files with 59 additions and 7 deletions
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66
src/mesa/drivers/dri/i965/gen8_ds_state.c
View File

@ -29,19 +29,71 @@
static void
gen8_upload_ds_state(struct brw_context *brw)
{
/* Disable the DS Unit */
int ds_pkt_len = brw->gen >= 9 ? 11 : 9;
BEGIN_BATCH(ds_pkt_len);
OUT_BATCH(_3DSTATE_DS << 16 | (ds_pkt_len - 2));
for (int i = 0; i < ds_pkt_len - 1; i++)
struct gl_context *ctx = &brw->ctx;
const struct brw_stage_state *stage_state = &brw->tes.base;
/* BRW_NEW_TESS_EVAL_PROGRAM */
bool active = brw->tess_eval_program;
assert(!active || brw->tess_ctrl_program);
/* BRW_NEW_TES_PROG_DATA */
const struct brw_tes_prog_data *tes_prog_data = brw->tes.prog_data;
const struct brw_vue_prog_data *vue_prog_data = &tes_prog_data->base;
const struct brw_stage_prog_data *prog_data = &vue_prog_data->base;
if (active) {
BEGIN_BATCH(9);
OUT_BATCH(_3DSTATE_DS << 16 | (9 - 2));
OUT_BATCH(stage_state->prog_offset);
OUT_BATCH(0);
ADVANCE_BATCH();
OUT_BATCH(SET_FIELD(DIV_ROUND_UP(stage_state->sampler_count, 4),
GEN7_DS_SAMPLER_COUNT) |
SET_FIELD(prog_data->binding_table.size_bytes / 4,
GEN7_DS_BINDING_TABLE_ENTRY_COUNT));
if (prog_data->total_scratch) {
OUT_RELOC64(stage_state->scratch_bo,
I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
ffs(prog_data->total_scratch) - 11);
} else {
OUT_BATCH(0);
OUT_BATCH(0);
}
OUT_BATCH(SET_FIELD(prog_data->dispatch_grf_start_reg,
GEN7_DS_DISPATCH_START_GRF) |
SET_FIELD(vue_prog_data->urb_read_length,
GEN7_DS_URB_READ_LENGTH));
OUT_BATCH(GEN7_DS_ENABLE |
GEN7_DS_STATISTICS_ENABLE |
(brw->max_ds_threads - 1) << HSW_DS_MAX_THREADS_SHIFT |
(vue_prog_data->dispatch_mode == DISPATCH_MODE_SIMD8 ?
GEN7_DS_SIMD8_DISPATCH_ENABLE : 0) |
(tes_prog_data->domain == BRW_TESS_DOMAIN_TRI ?
GEN7_DS_COMPUTE_W_COORDINATE_ENABLE : 0));
OUT_BATCH(SET_FIELD(ctx->Transform.ClipPlanesEnabled,
GEN8_DS_USER_CLIP_DISTANCE));
ADVANCE_BATCH();
} else {
BEGIN_BATCH(9);
OUT_BATCH(_3DSTATE_DS << 16 | (9 - 2));
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
ADVANCE_BATCH();
}
brw->tes.enabled = active;
}
const struct brw_tracked_state gen8_ds_state = {
.dirty = {
.mesa = 0,
.brw = BRW_NEW_CONTEXT,
.brw = BRW_NEW_BATCH |
BRW_NEW_TESS_EVAL_PROGRAM |
BRW_NEW_TES_PROG_DATA,
},
.emit = gen8_upload_ds_state,
};