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freedreno/ir3: support load_base_instance

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Not supported by hardware, uses same mechanism as base vertex.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3162>
This commit is contained in:
Jonathan Marek 2019-11-17 12:17:47 -05:00
parent 5c17d9b9ca
commit a3a70588c0
4 changed files with 12 additions and 1 deletions
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6
src/freedreno/ir3/ir3_compiler_nir.c
View file

@ -1671,6 +1671,12 @@ emit_intrinsic(struct ir3_context *ctx, nir_intrinsic_instr *intr)
}
dst[0] = ctx->basevertex;
break;
case nir_intrinsic_load_base_instance:
if (!ctx->base_instance) {
ctx->base_instance = create_driver_param(ctx, IR3_DP_INSTID_BASE);
}
dst[0] = ctx->base_instance;
break;
case nir_intrinsic_load_vertex_id_zero_base:
case nir_intrinsic_load_vertex_id:
if (!ctx->vertex_id) {

2
src/freedreno/ir3/ir3_context.h
View file

@ -83,7 +83,7 @@ struct ir3_context {
struct ir3_instruction *frag_face, *frag_coord;
/* For vertex shaders, keep track of the system values sources */
struct ir3_instruction *vertex_id, *basevertex, *instance_id;
struct ir3_instruction *vertex_id, *basevertex, *instance_id, *base_instance;
/* For fragment shaders: */
struct ir3_instruction *samp_id, *samp_mask_in;

4
src/freedreno/ir3/ir3_nir.c
View file

@ -415,6 +415,10 @@ ir3_nir_scan_driver_consts(nir_shader *shader,
layout->num_driver_params =
MAX2(layout->num_driver_params, IR3_DP_VTXID_BASE + 1);
break;
case nir_intrinsic_load_base_instance:
layout->num_driver_params =
MAX2(layout->num_driver_params, IR3_DP_INSTID_BASE + 1);
break;
case nir_intrinsic_load_user_clip_plane:
layout->num_driver_params =
MAX2(layout->num_driver_params, IR3_DP_UCP7_W + 1);

1
src/freedreno/ir3/ir3_shader.h
View file

@ -57,6 +57,7 @@ enum ir3_driver_param {
/* vertex shader driver params: */
IR3_DP_VTXID_BASE = 0,
IR3_DP_VTXCNT_MAX = 1,
IR3_DP_INSTID_BASE = 2,
/* user-clip-plane components, up to 8x vec4's: */
IR3_DP_UCP0_X = 4,
/* .... */