diff options
| author | Rob Clark <[email protected]> | 2015-11-05 13:31:25 -0500 |
|---|---|---|
| committer | Rob Clark <[email protected]> | 2016-01-30 12:11:54 -0500 |
| commit | f212d7dc50a6a81e65f146d0ccef5776ec5e497f (patch) | |
| tree | ad6b1691d4c3f48475f94b48b3f4c1984e20f97a | |
| parent | 9e05e8cb7511d7c575e226176f6e9be1c67268a4 (diff) | |
freedreno/ir3: support load_front_face intrinsic
With tgsi_to_nir we get this as a normal input with VARYING_SLOT_FACE.
But glsl_to_nir plus nir_lower_system_values this becomes an intrinsic.
Signed-off-by: Rob Clark <[email protected]>
| -rw-r--r-- | src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c b/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c index 1ea2dd9cbf7..11ec014db82 100644 --- a/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c +++ b/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c @@ -556,6 +556,10 @@ create_frag_coord(struct ir3_compile *ctx, unsigned comp) } } +/* NOTE: this creates the "TGSI" style fragface (ie. input slot + * VARYING_SLOT_FACE). For NIR style nir_intrinsic_load_front_face + * we can just use the value from hw directly (since it is boolean) + */ static struct ir3_instruction * create_frag_face(struct ir3_compile *ctx, unsigned comp) { @@ -1224,7 +1228,7 @@ emit_intrinsic(struct ir3_compile *ctx, nir_intrinsic_instr *intr) break; case nir_intrinsic_load_vertex_id_zero_base: if (!ctx->vertex_id) { - ctx->vertex_id = create_input(ctx->block, 0); + ctx->vertex_id = create_input(b, 0); add_sysval_input(ctx, SYSTEM_VALUE_VERTEX_ID_ZERO_BASE, ctx->vertex_id); } @@ -1232,7 +1236,7 @@ emit_intrinsic(struct ir3_compile *ctx, nir_intrinsic_instr *intr) break; case nir_intrinsic_load_instance_id: if (!ctx->instance_id) { - ctx->instance_id = create_input(ctx->block, 0); + ctx->instance_id = create_input(b, 0); add_sysval_input(ctx, SYSTEM_VALUE_INSTANCE_ID, ctx->instance_id); } @@ -1244,6 +1248,14 @@ emit_intrinsic(struct ir3_compile *ctx, nir_intrinsic_instr *intr) dst[i] = create_driver_param(ctx, IR3_DP_UCP0_X + n); } break; + case nir_intrinsic_load_front_face: + if (!ctx->frag_face) { + ctx->so->frag_face = true; + ctx->frag_face = create_input(b, 0); + ctx->frag_face->regs[0]->flags |= IR3_REG_HALF; + } + dst[0] = ir3_ADD_S(b, ctx->frag_face, 0, create_immed(b, 1), 0); + break; case nir_intrinsic_discard_if: case nir_intrinsic_discard: { struct ir3_instruction *cond, *kill; |