Signed-off-by: Ilia Mirkin <imir...@alum.mit.edu>
---
Untested. Can be verified with Xnine. It should pass before 1/2 of this series,
start failing with it, and pass again with 2/2 in place.
src/gallium/drivers/r600/r600_pipe.c | 2 +-
src/gallium/drivers/r600/r600_shader.c | 20 +++++++++++++++++---
2 files changed, 18 insertions(+), 4 deletions(-)
diff --git a/src/gallium/drivers/r600/r600_pipe.c
b/src/gallium/drivers/r600/r600_pipe.c
index 98ceebf..d126d37 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -286,6 +286,7 @@ static int r600_get_param(struct pipe_screen* pscreen, enum
pipe_cap param)
case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
case PIPE_CAP_POLYGON_OFFSET_UNITS_UNSCALED:
case PIPE_CAP_CLEAR_TEXTURE:
+ case PIPE_CAP_TGSI_MUL_ZERO_WINS:
return 1;
case PIPE_CAP_DEVICE_RESET_STATUS_QUERY:
@@ -378,7 +379,6 @@ static int r600_get_param(struct pipe_screen* pscreen, enum
pipe_cap param)
case PIPE_CAP_NATIVE_FENCE_FD:
case PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELY:
case PIPE_CAP_TGSI_FS_FBFETCH:
- case PIPE_CAP_TGSI_MUL_ZERO_WINS:
return 0;
case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
diff --git a/src/gallium/drivers/r600/r600_shader.c
b/src/gallium/drivers/r600/r600_shader.c
index 0114f8f..b692e7f 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -3906,6 +3906,11 @@ static int tgsi_op2_s(struct r600_shader_ctx *ctx, int
swap, int trans_only)
int i, j, r, lasti = tgsi_last_instruction(write_mask);
/* use temp register if trans_only and more than one dst component */
int use_tmp = trans_only && (write_mask ^ (1 << lasti));
+ unsigned op = ctx->inst_info->op;
+
+ if (op == ALU_OP2_MUL_IEEE &&
+ ctx->info.properties[TGSI_PROPERTY_MUL_ZERO_WINS])
+ op = ALU_OP2_MUL;
for (i = 0; i <= lasti; i++) {
if (!(write_mask & (1 << i)))
@@ -3919,7 +3924,7 @@ static int tgsi_op2_s(struct r600_shader_ctx *ctx, int
swap, int trans_only)
} else
tgsi_dst(ctx, &inst->Dst[0], i, &alu.dst);
- alu.op = ctx->inst_info->op;
+ alu.op = op;
if (!swap) {
for (j = 0; j < inst->Instruction.NumSrcRegs; j++) {
r600_bytecode_src(&alu.src[j], &ctx->src[j], i);
@@ -6543,6 +6548,11 @@ static int tgsi_op3(struct r600_shader_ctx *ctx)
int i, j, r;
int lasti = tgsi_last_instruction(inst->Dst[0].Register.WriteMask);
int temp_regs[4];
+ unsigned op = ctx->inst_info->op;
+
+ if (op == ALU_OP3_MULADD_IEEE &&
+ ctx->info.properties[TGSI_PROPERTY_MUL_ZERO_WINS])
+ op = ALU_OP3_MULADD;
for (j = 0; j < inst->Instruction.NumSrcRegs; j++) {
temp_regs[j] = 0;
@@ -6554,7 +6564,7 @@ static int tgsi_op3(struct r600_shader_ctx *ctx)
continue;
memset(&alu, 0, sizeof(struct r600_bytecode_alu));
- alu.op = ctx->inst_info->op;
+ alu.op = op;
for (j = 0; j < inst->Instruction.NumSrcRegs; j++) {
r = tgsi_make_src_for_op3(ctx, temp_regs[j], i,
&alu.src[j], &ctx->src[j]);
if (r)
@@ -6580,10 +6590,14 @@ static int tgsi_dp(struct r600_shader_ctx *ctx)
struct tgsi_full_instruction *inst =
&ctx->parse.FullToken.FullInstruction;
struct r600_bytecode_alu alu;
int i, j, r;
+ unsigned op = ctx->inst_info->op;
+ if (op == ALU_OP2_DOT4_IEEE &&
+ ctx->info.properties[TGSI_PROPERTY_MUL_ZERO_WINS])
+ op = ALU_OP2_DOT4;
for (i = 0; i < 4; i++) {
memset(&alu, 0, sizeof(struct r600_bytecode_alu));
- alu.op = ctx->inst_info->op;
+ alu.op = op;
for (j = 0; j < inst->Instruction.NumSrcRegs; j++) {
r600_bytecode_src(&alu.src[j], &ctx->src[j], i);
}
--
2.10.2
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