diff options
Diffstat (limited to 'src/gallium/drivers/vc4/vc4_program.c')
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_program.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/gallium/drivers/vc4/vc4_program.c b/src/gallium/drivers/vc4/vc4_program.c index dd8c4210eee..19bb8a332b4 100644 --- a/src/gallium/drivers/vc4/vc4_program.c +++ b/src/gallium/drivers/vc4/vc4_program.c @@ -932,6 +932,46 @@ out: return qir_SEL(c, QPU_COND_NS, src[1], src[2]); } +static struct qreg +ntq_fddx(struct vc4_compile *c, struct qreg src) +{ + /* Make sure that we have a bare temp to use for MUL rotation, so it + * can be allocated to an accumulator. + */ + if (src.pack || src.file != QFILE_TEMP) + src = qir_MOV(c, src); + + struct qreg from_left = qir_ROT_MUL(c, src, 1); + struct qreg from_right = qir_ROT_MUL(c, src, 15); + + /* Distinguish left/right pixels of the quad. */ + qir_SF(c, qir_AND(c, qir_reg(QFILE_QPU_ELEMENT, 0), + qir_uniform_ui(c, 1))); + + return qir_SEL(c, QPU_COND_ZS, + qir_FSUB(c, from_right, src), + qir_FSUB(c, src, from_left)); +} + +static struct qreg +ntq_fddy(struct vc4_compile *c, struct qreg src) +{ + if (src.pack || src.file != QFILE_TEMP) + src = qir_MOV(c, src); + + struct qreg from_bottom = qir_ROT_MUL(c, src, 2); + struct qreg from_top = qir_ROT_MUL(c, src, 14); + + /* Distinguish top/bottom pixels of the quad. */ + qir_SF(c, qir_AND(c, + qir_reg(QFILE_QPU_ELEMENT, 0), + qir_uniform_ui(c, 2))); + + return qir_SEL(c, QPU_COND_ZS, + qir_FSUB(c, from_top, src), + qir_FSUB(c, src, from_bottom)); +} + static void ntq_emit_alu(struct vc4_compile *c, nir_alu_instr *instr) { @@ -1158,6 +1198,18 @@ ntq_emit_alu(struct vc4_compile *c, nir_alu_instr *instr) result = qir_V8MULD(c, src[0], src[1]); break; + case nir_op_fddx: + case nir_op_fddx_coarse: + case nir_op_fddx_fine: + result = ntq_fddx(c, src[0]); + break; + + case nir_op_fddy: + case nir_op_fddy_coarse: + case nir_op_fddy_fine: + result = ntq_fddy(c, src[0]); + break; + default: fprintf(stderr, "unknown NIR ALU inst: "); nir_print_instr(&instr->instr, stderr); |