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vc4: Add QPU scheduling to handle MUL rotate sources.

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We need MUL rotates to do ddx/ddy support.
This commit is contained in:
Eric Anholt 2016-08-25 13:40:27 -07:00
parent b0b99a7952
commit 3da4e38f48
1 changed files with 13 additions and 0 deletions
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13
src/gallium/drivers/vc4/vc4_qpu_schedule.c
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@ -486,6 +486,19 @@ reads_too_soon_after_write(struct choose_scoreboard *scoreboard, uint64_t inst)
}
}
if (sig == QPU_SIG_SMALL_IMM &&
QPU_GET_FIELD(inst, QPU_SMALL_IMM) >= QPU_SMALL_IMM_MUL_ROT) {
uint32_t mux_a = QPU_GET_FIELD(inst, QPU_MUL_A);
uint32_t mux_b = QPU_GET_FIELD(inst, QPU_MUL_B);
if (scoreboard->last_waddr_a == mux_a + QPU_W_ACC0 ||
scoreboard->last_waddr_a == mux_b + QPU_W_ACC0 ||
scoreboard->last_waddr_b == mux_a + QPU_W_ACC0 ||
scoreboard->last_waddr_b == mux_b + QPU_W_ACC0) {
return true;
}
}
if (reads_uniform(inst) &&
scoreboard->tick - scoreboard->last_uniforms_reset_tick <= 2) {
return true;