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nv2a: Skip input decode if MAC and ILU are both NOP.

This commit is contained in:
Erik Abair 2021-10-11 13:23:16 -07:00 committed by mborgerson
parent 414c870e61
commit db2a6aaf6d
1 changed files with 8 additions and 4 deletions
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12
hw/xbox/nv2a/vsh.c
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@ -447,6 +447,14 @@ static MString* decode_token(const uint32_t *shader_token)
{
MString *ret;
/* See what MAC opcode is written to (if not masked away): */
VshMAC mac = vsh_get_field(shader_token, FLD_MAC);
/* See if a ILU opcode is present too: */
VshILU ilu = vsh_get_field(shader_token, FLD_ILU);
if (mac == MAC_NOP && ilu == ILU_NOP) {
return mstring_new();
}
/* Since it's potentially used twice, decode input C once: */
MString *input_c =
decode_opcode_input(shader_token,
@ -455,8 +463,6 @@ static MString* decode_token(const uint32_t *shader_token)
(vsh_get_field(shader_token, FLD_C_R_HIGH) << 2)
| vsh_get_field(shader_token, FLD_C_R_LOW));
/* See what MAC opcode is written to (if not masked away): */
VshMAC mac = vsh_get_field(shader_token, FLD_MAC);
if (mac != MAC_NOP) {
MString *inputs_mac = mstring_new();
if (mac_opcode_params[mac].A) {
@ -495,8 +501,6 @@ static MString* decode_token(const uint32_t *shader_token)
ret = mstring_new();
}
/* See if a ILU opcode is present too: */
VshILU ilu = vsh_get_field(shader_token, FLD_ILU);
if (ilu != ILU_NOP) {
MString *inputs_c = mstring_from_str(", ");
mstring_append(inputs_c, mstring_get_str(input_c));