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iris: emit 3DSTATE_SBE_SWIZ

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This commit is contained in:
Kenneth Graunke 2018-06-20 15:11:09 -07:00
parent 26db2ea782
commit 7cdc6b1173
1 changed files with 99 additions and 2 deletions
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101
src/gallium/drivers/iris/iris_state.c
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@ -1687,6 +1687,103 @@ iris_compute_sbe_urb_read_interval(uint64_t fs_input_slots,
*out_length = DIV_ROUND_UP(last_read_slot - first_slot + 1, 2);
}
static void
iris_emit_sbe_swiz(struct iris_batch *batch,
const struct iris_context *ice,
unsigned urb_read_offset)
{
struct GENX(SF_OUTPUT_ATTRIBUTE_DETAIL) attr_overrides[16] = {};
const struct brw_wm_prog_data *wm_prog_data = (void *)
ice->shaders.prog[MESA_SHADER_FRAGMENT]->prog_data;
const struct brw_vue_map *vue_map = ice->shaders.last_vue_map;
const struct iris_rasterizer_state *cso_rast = ice->state.cso_rast;
/* XXX: this should be generated when putting programs in place */
// XXX: raster->sprite_coord_enable
for (int fs_attr = 0; fs_attr < VARYING_SLOT_MAX; fs_attr++) {
const int input_index = wm_prog_data->urb_setup[fs_attr];
if (input_index < 0 || input_index >= 16)
continue;
struct GENX(SF_OUTPUT_ATTRIBUTE_DETAIL) *attr =
&attr_overrides[input_index];
/* Viewport and Layer are stored in the VUE header. We need to override
* them to zero if earlier stages didn't write them, as GL requires that
* they read back as zero when not explicitly set.
*/
switch (fs_attr) {
case VARYING_SLOT_VIEWPORT:
case VARYING_SLOT_LAYER:
attr->ComponentOverrideX = true;
attr->ComponentOverrideW = true;
attr->ConstantSource = CONST_0000;
if (!(vue_map->slots_valid & VARYING_BIT_LAYER))
attr->ComponentOverrideY = true;
if (!(vue_map->slots_valid & VARYING_BIT_VIEWPORT))
attr->ComponentOverrideZ = true;
continue;
case VARYING_SLOT_PRIMITIVE_ID:
attr->ComponentOverrideX = true;
attr->ComponentOverrideY = true;
attr->ComponentOverrideZ = true;
attr->ComponentOverrideW = true;
attr->ConstantSource = PRIM_ID;
continue;
default:
break;
}
int slot = vue_map->varying_to_slot[fs_attr];
/* If there was only a back color written but not front, use back
* as the color instead of undefined.
*/
if (slot == -1 && fs_attr == VARYING_SLOT_COL0)
slot = vue_map->varying_to_slot[VARYING_SLOT_BFC0];
if (slot == -1 && fs_attr == VARYING_SLOT_COL1)
slot = vue_map->varying_to_slot[VARYING_SLOT_BFC1];
/* Not written by the previous stage - undefined. */
if (slot == -1) {
attr->ComponentOverrideX = true;
attr->ComponentOverrideY = true;
attr->ComponentOverrideZ = true;
attr->ComponentOverrideW = true;
attr->ConstantSource = CONST_0001_FLOAT;
continue;
}
/* Compute the location of the attribute relative to the read offset,
* which is counted in 256-bit increments (two 128-bit VUE slots).
*/
const int source_attr = slot - 2 * urb_read_offset;
assert(source_attr >= 0 && source_attr <= 32);
attr->SourceAttribute = source_attr;
/* If we are doing two-sided color, and the VUE slot following this one
* represents a back-facing color, then we need to instruct the SF unit
* to do back-facing swizzling.
*/
if (cso_rast->light_twoside &&
((vue_map->slot_to_varying[slot] == VARYING_SLOT_COL0 &&
vue_map->slot_to_varying[slot+1] == VARYING_SLOT_BFC0) ||
(vue_map->slot_to_varying[slot] == VARYING_SLOT_COL1 &&
vue_map->slot_to_varying[slot+1] == VARYING_SLOT_BFC1)))
attr->SwizzleSelect = INPUTATTR_FACING;
}
iris_emit_cmd(batch, GENX(3DSTATE_SBE_SWIZ), sbes) {
for (int i = 0; i < 16; i++)
sbes.Attribute[i] = attr_overrides[i];
}
}
static void
iris_emit_sbe(struct iris_batch *batch, const struct iris_context *ice)
{
@ -1718,6 +1815,8 @@ iris_emit_sbe(struct iris_batch *batch, const struct iris_context *ice)
sbe.AttributeActiveComponentFormat[i] = ACTIVE_COMPONENT_XYZW;
}
}
iris_emit_sbe_swiz(batch, ice, urb_read_offset);
}
static void
@ -2597,8 +2696,6 @@ iris_upload_render_state(struct iris_context *ice,
// -> iris_raster_state (point sprite texture coordinate origin)
// -> bunch of shader state...
iris_emit_sbe(batch, ice);
iris_emit_cmd(batch, GENX(3DSTATE_SBE_SWIZ), sbe) {
}
}
if (dirty & IRIS_DIRTY_PS_BLEND) {