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broadcom/vc5: Implement GFXH-1684 workaround.

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Apparently the VPM writes need to be flushed out before we end the shader.
This commit is contained in:
Eric Anholt
2018-01-05 17:23:13 -08:00
parent 57965755e2
commit a075bb6726
4 changed files with 20 additions and 0 deletions
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5
src/broadcom/compiler/nir_to_vir.c
View File

@@ -1362,6 +1362,11 @@ emit_vert_end(struct v3d_compile *c)
vir_VPM_WRITE(c, vir_uniform_f(c, 0.0),
&vpm_index);
}
/* GFXH-1684: VPM writes need to be complete by the end of the shader.
*/
if (c->devinfo->ver >= 40 && c->devinfo->ver <= 41)
vir_VPMWT(c);
}
void

4
src/broadcom/compiler/qpu_schedule.c
View File

@@ -310,6 +310,10 @@ calculate_deps(struct schedule_state *state, struct schedule_node *n)
add_write_dep(state, &state->last_vpm, n);
break;
case V3D_QPU_A_VPMWT:
add_read_dep(state, state->last_vpm, n);
break;
case V3D_QPU_A_MSF:
add_read_dep(state, state->last_tlb, n);
break;

10
src/broadcom/compiler/v3d_compiler.h
View File

@@ -744,6 +744,14 @@ vir_##name##_dest(struct v3d_compile *c, struct qreg dest, \
return vir_emit_nondef(c, vir_inst(op, dest, a, b)); \
}
#define VIR_NODST_0(name, vir_inst, op) \
static inline struct qinst * \
vir_##name(struct v3d_compile *c) \
{ \
return vir_emit_nondef(c, vir_inst(op, c->undef, \
c->undef, c->undef)); \
}
#define VIR_NODST_1(name, vir_inst, op) \
static inline struct qinst * \
vir_##name(struct v3d_compile *c, struct qreg a) \
@@ -770,6 +778,7 @@ vir_##name(struct v3d_compile *c, struct qreg a, struct qreg b) \
#define VIR_M_NODST_2(name) VIR_NODST_2(name, vir_mul_inst, V3D_QPU_M_##name)
#define VIR_A_NODST_1(name) VIR_NODST_1(name, vir_add_inst, V3D_QPU_A_##name)
#define VIR_M_NODST_1(name) VIR_NODST_1(name, vir_mul_inst, V3D_QPU_M_##name)
#define VIR_A_NODST_0(name) VIR_NODST_0(name, vir_add_inst, V3D_QPU_A_##name)
VIR_A_ALU2(FADD)
VIR_A_ALU2(VFPACK)
@@ -812,6 +821,7 @@ VIR_A_ALU0(YCD)
VIR_A_ALU0(MSF)
VIR_A_ALU0(REVF)
VIR_A_NODST_1(VPMSETUP)
VIR_A_NODST_0(VPMWT)
VIR_A_ALU2(FCMP)
VIR_A_ALU2(VFMAX)

1
src/broadcom/compiler/vir.c
View File

@@ -95,6 +95,7 @@ vir_has_side_effects(struct v3d_compile *c, struct qinst *inst)
case V3D_QPU_A_STVPMV:
case V3D_QPU_A_STVPMD:
case V3D_QPU_A_STVPMP:
case V3D_QPU_A_VPMWT:
return true;
default:
break;