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freedreno/ir3: track sysval slot for inputs

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Will be needed for special handling of SYSTEM_VALUE_BARYCENTRIC_PIXEL
(ij_pix) when pre-fs texture fetch is enabled.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
This commit is contained in:
Rob Clark 2019-10-11 11:35:53 -07:00 • committed by Rob Clark
parent 35692fab86
commit af817a44c1
3 changed files with 12 additions and 0 deletions
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7
src/freedreno/ir3/ir3.h
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@ -267,6 +267,13 @@ struct ir3_instruction {
struct {
int off; /* component/offset */
} fo;
struct {
/* for sysvals, identifies the sysval type. Mostly so we can
* identify the special cases where a sysval should not be DCE'd
* (currently, just pre-fs texture fetch)
*/
gl_system_value sysval;
} input;
};
/* transient values used during various algorithms: */

4
src/freedreno/ir3/ir3_compiler_nir.c
View file

@ -68,6 +68,7 @@ create_input_compmask(struct ir3_context *ctx, unsigned n, unsigned compmask)
struct ir3_instruction *in;
in = ir3_instr_create(ctx->in_block, OPC_META_INPUT);
in->input.sysval = ~0;
ir3_reg_create(in, n, 0);
in->regs[0]->wrmask = compmask;
@ -1197,6 +1198,9 @@ static void add_sysval_input_compmask(struct ir3_context *ctx,
unsigned r = regid(so->inputs_count, 0);
unsigned n = so->inputs_count++;
assert(instr->opc == OPC_META_INPUT);
instr->input.sysval = slot;
so->inputs[n].sysval = true;
so->inputs[n].slot = slot;
so->inputs[n].compmask = compmask;

1
src/freedreno/ir3/ir3_group.c
View file

@ -60,6 +60,7 @@ static void arr_insert_mov_in(void *arr, int idx, struct ir3_instruction *instr)
debug_assert(instr->regs_count == 1);
in = ir3_instr_create(instr->block, OPC_META_INPUT);
in->input.sysval = instr->input.sysval;
ir3_reg_create(in, instr->regs[0]->num, 0);
/* create src reg for meta:in and fixup to now be a mov: */