r600: factor out cayman_emit_unary_double_raw
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>
(cherry picked from commit 488560cfe6ee2206f7a7f894694ebc43b419be61)
diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
index 7d1452a..5c4bc91 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -4185,41 +4185,63 @@
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)))
