Vinson Lee wrote:
>> -----Original Message-----
>>
>>> mesa: Remove pointless comparison of unsigned integer with a negative
>> constant.
>>> ---
>>>
>>> src/mesa/shader/prog_execute.c | 13 ++++---------
>>> 1 files changed, 4 insertions(+), 9 deletions(-)
>>>
>>> diff --git a/src/mesa/shader/prog_execute.c
>> b/src/mesa/shader/prog_execute.c
>>> index aea4b07..ee422e7 100644
>>> --- a/src/mesa/shader/prog_execute.c
>>> +++ b/src/mesa/shader/prog_execute.c
>>> @@ -1780,15 +1780,10 @@ _mesa_execute_program(GLcontext * ctx,
>>> break;
>>> case OPCODE_PRINT:
>>> {
>>> - if (inst->SrcReg[0].File != -1) {
>>> - GLfloat a[4];
>>> - fetch_vector4(&inst->SrcReg[0], machine, a);
>>> - _mesa_printf("%s%g, %g, %g, %g\n", (const char *) inst-
>>> Data,
>>> - a[0], a[1], a[2], a[3]);
>>> - }
>>> - else {
>>> - _mesa_printf("%s\n", (const char *) inst->Data);
>>> - }
>>> + GLfloat a[4];
>>> + fetch_vector4(&inst->SrcReg[0], machine, a);
>>> + _mesa_printf("%s%g, %g, %g, %g\n", (const char *) inst-
>>> Data,
>>> + a[0], a[1], a[2], a[3]);
>> I don't think this is correct. The shader assembler used to set the
>> register file to -1 to note the difference between the following two
>> instructions:
>>
>> PRINT "Hello, world";
>> PRINT "vertex color", color;
>>
>> Even if comparing with -1 isn't entirely correct, removing the code
>> altogether is clearly wrong.
>>
>>> }
>>> break;
>>> case OPCODE_END:
>
> Where is the set of the register file to -1?
At nvvertparse.c:1099 it's set to zero. I don't see where it's set to
-1 either.
> Should the -1 comparison been against PROGRAM_FILE_MAX or PROGRAM_UNDEFINED
> instead?
The assignment above should probably use PROGRAM_UNDEFINED instead of 0.
-Brian
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