/**
* Map a Mesa dst register to a TGSI ureg_dst register.
*/
static struct ureg_dst
dst_register( struct st_translate *t,
gl_register_file file,
GLuint index )
{
switch( file ) {
case PROGRAM_UNDEFINED:
return ureg_dst_undef();
case PROGRAM_TEMPORARY:
if (ureg_dst_is_undef(t->temps[index]))
t->temps[index] = ureg_DECL_temporary( t->ureg );
return t->temps[index];
case PROGRAM_OUTPUT:
if (t->procType == TGSI_PROCESSOR_VERTEX)
assert(index < VARYING_SLOT_MAX);
else if (t->procType == TGSI_PROCESSOR_FRAGMENT)
assert(index < FRAG_RESULT_MAX);
else
assert(index < VARYING_SLOT_MAX);
assert(t->outputMapping[index] < ARRAY_SIZE(t->outputs));
return t->outputs[t->outputMapping[index]];
case PROGRAM_ADDRESS:
return t->address[index];
default:
debug_assert( 0 );
return ureg_dst_undef();
}
}
static struct ureg_dst
get_temp(struct st_translate *t, unsigned index)
{
if (ureg_dst_is_undef(t->temps[index]))
t->temps[index] = ureg_DECL_temporary(t->ureg);
return t->temps[index];
}
/**
* Map a Mesa src register to a TGSI ureg_src register.
*/
static struct ureg_src
src_register( struct st_translate *t,
gl_register_file file,
GLint index )
{
switch( file ) {
case PROGRAM_UNDEFINED:
return ureg_src_undef();
case PROGRAM_TEMPORARY:
assert(index >= 0);
assert(index < Elements(t->temps));
if (ureg_dst_is_undef(t->temps[index]))
t->temps[index] = ureg_DECL_temporary( t->ureg );
return ureg_src(t->temps[index]);
case PROGRAM_ENV_PARAM:
case PROGRAM_LOCAL_PARAM:
case PROGRAM_UNIFORM:
assert(index >= 0);
return t->constants[index];
case PROGRAM_STATE_VAR:
case PROGRAM_CONSTANT: /* ie, immediate */
if (index < 0)
return ureg_DECL_constant( t->ureg, 0 );
else
return t->constants[index];
case PROGRAM_INPUT:
assert(t->inputMapping[index] < Elements(t->inputs));
return t->inputs[t->inputMapping[index]];
case PROGRAM_OUTPUT:
assert(t->outputMapping[index] < Elements(t->outputs));
return ureg_src(t->outputs[t->outputMapping[index]]); /* not needed? */
case PROGRAM_ADDRESS:
return ureg_src(t->address[index]);
case PROGRAM_SYSTEM_VALUE:
assert(index < Elements(t->systemValues));
return t->systemValues[index];
default:
debug_assert( 0 );
return ureg_src_undef();
}
}
