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r600: factor out cayman_emit_unary_double_raw

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We will use it for DDIV.

Tested-by: Glenn Kennard <glenn.kennard@gmail.com>
Tested-by: James Harvey <lothmordor@gmail.com>
Cc: 17.0 <mesa-stable@lists.freedesktop.org>
This commit is contained in:
Nicolai Hähnle 2017-01-19 14:44:24 +01:00
parent 76b02d2fe1
commit 488560cfe6
1 changed files with 47 additions and 25 deletions
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72
src/gallium/drivers/r600/r600_shader.c
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@ -4185,41 +4185,63 @@ static int egcm_double_to_int(struct r600_shader_ctx *ctx)
return 0;
}
static int cayman_emit_unary_double_raw(struct r600_bytecode *bc,
unsigned op,
int dst_reg,
struct r600_shader_src *src,
bool abs)
{
struct r600_bytecode_alu alu;
const int last_slot = 3;
int r;
/* these have to write the result to X/Y by the looks of it */
for (int i = 0 ; i < last_slot; i++) {
memset(&alu, 0, sizeof(struct r600_bytecode_alu));
alu.op = op;
r600_bytecode_src(&alu.src[0], src, 1);
r600_bytecode_src(&alu.src[1], src, 0);
if (abs)
r600_bytecode_src_set_abs(&alu.src[1]);
alu.dst.sel = dst_reg;
alu.dst.chan = i;
alu.dst.write = (i == 0 || i == 1);
if (bc->chip_class != CAYMAN || i == last_slot - 1)
alu.last = 1;
r = r600_bytecode_add_alu(bc, &alu);
if (r)
return r;
}
return 0;
}
static int cayman_emit_double_instr(struct r600_shader_ctx *ctx)
{
struct tgsi_full_instruction *inst = &ctx->parse.FullToken.FullInstruction;
int i, r;
struct r600_bytecode_alu alu;
int last_slot = 3;
int lasti = tgsi_last_instruction(inst->Dst[0].Register.WriteMask);
int t1 = ctx->temp_reg;
/* these have to write the result to X/Y by the looks of it */
for (i = 0 ; i < last_slot; i++) {
memset(&alu, 0, sizeof(struct r600_bytecode_alu));
alu.op = ctx->inst_info->op;
/* should only be one src regs */
assert(inst->Instruction.NumSrcRegs == 1);
/* should only be one src regs */
assert (inst->Instruction.NumSrcRegs == 1);
/* only support one double at a time */
assert(inst->Dst[0].Register.WriteMask == TGSI_WRITEMASK_XY ||
inst->Dst[0].Register.WriteMask == TGSI_WRITEMASK_ZW);
r600_bytecode_src(&alu.src[0], &ctx->src[0], 1);
r600_bytecode_src(&alu.src[1], &ctx->src[0], 0);
/* RSQ should take the absolute value of src */
if (ctx->parse.FullToken.FullInstruction.Instruction.Opcode == TGSI_OPCODE_DRSQ ||
ctx->parse.FullToken.FullInstruction.Instruction.Opcode == TGSI_OPCODE_DSQRT) {
r600_bytecode_src_set_abs(&alu.src[1]);
}
alu.dst.sel = t1;
alu.dst.chan = i;
alu.dst.write = (i == 0 || i == 1);
if (ctx->bc->chip_class != CAYMAN || i == last_slot - 1)
alu.last = 1;
r = r600_bytecode_add_alu(ctx->bc, &alu);
if (r)
return r;
}
r = cayman_emit_unary_double_raw(
ctx->bc, ctx->inst_info->op, t1,
&ctx->src[0],
ctx->parse.FullToken.FullInstruction.Instruction.Opcode == TGSI_OPCODE_DRSQ ||
ctx->parse.FullToken.FullInstruction.Instruction.Opcode == TGSI_OPCODE_DSQRT);
if (r)
return r;
for (i = 0 ; i <= lasti; i++) {
if (!(inst->Dst[0].Register.WriteMask & (1 << i)))