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tgsi: Parse extended source register modifiers.

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This commit is contained in:
Michal Krol 2008-07-13 15:14:31 +02:00
parent 47a45aaa0f
commit 94013b66b9
1 changed files with 127 additions and 2 deletions
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129
src/gallium/auxiliary/tgsi/util/tgsi_text.c
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@ -393,14 +393,78 @@ parse_src_operand(
struct tgsi_full_src_register *src )
{
const char *cur;
float value;
uint file;
uint index;
/* TODO: Extended register modifiers */
if (*ctx->cur == '-') {
cur = ctx->cur;
cur++;
eat_opt_white( &cur );
if (*cur == '(') {
cur++;
src->SrcRegisterExtMod.Negate = 1;
eat_opt_white( &cur );
ctx->cur = cur;
}
}
if (*ctx->cur == '|') {
ctx->cur++;
eat_opt_white( &ctx->cur );
src->SrcRegisterExtMod.Absolute = 1;
}
if (*ctx->cur == '-') {
ctx->cur++;
src->SrcRegister.Negate = 1;
eat_opt_white( &ctx->cur );
src->SrcRegister.Negate = 1;
}
cur = ctx->cur;
if (parse_float( &cur, &value )) {
if (value == 2.0f) {
eat_opt_white( &cur );
if (*cur != '*') {
report_error( ctx, "Expected `*'" );
return FALSE;
}
cur++;
if (*cur != '(') {
report_error( ctx, "Expected `('" );
return FALSE;
}
cur++;
src->SrcRegisterExtMod.Scale2X = 1;
eat_opt_white( &cur );
ctx->cur = cur;
}
}
if (*ctx->cur == '(') {
ctx->cur++;
eat_opt_white( &ctx->cur );
src->SrcRegisterExtMod.Bias = 1;
}
cur = ctx->cur;
if (parse_float( &cur, &value )) {
if (value == 1.0f) {
eat_opt_white( &cur );
if (*cur != '-') {
report_error( ctx, "Expected `-'" );
return FALSE;
}
cur++;
if (*cur != '(') {
report_error( ctx, "Expected `('" );
return FALSE;
}
cur++;
src->SrcRegisterExtMod.Complement = 1;
eat_opt_white( &cur );
ctx->cur = cur;
}
}
if (!parse_register( ctx, &file, &index ))
@ -438,6 +502,67 @@ parse_src_operand(
ctx->cur = cur;
}
if (src->SrcRegisterExtMod.Complement) {
eat_opt_white( &ctx->cur );
if (*ctx->cur != ')') {
report_error( ctx, "Expected `)'" );
return FALSE;
}
ctx->cur++;
}
if (src->SrcRegisterExtMod.Bias) {
eat_opt_white( &ctx->cur );
if (*ctx->cur != ')') {
report_error( ctx, "Expected `)'" );
return FALSE;
}
ctx->cur++;
eat_opt_white( &ctx->cur );
if (*ctx->cur != '-') {
report_error( ctx, "Expected `-'" );
return FALSE;
}
ctx->cur++;
eat_opt_white( &ctx->cur );
if (!parse_float( &ctx->cur, &value )) {
report_error( ctx, "Expected literal floating point" );
return FALSE;
}
if (value != 0.5f) {
report_error( ctx, "Expected 0.5" );
return FALSE;
}
}
if (src->SrcRegisterExtMod.Scale2X) {
eat_opt_white( &ctx->cur );
if (*ctx->cur != ')') {
report_error( ctx, "Expected `)'" );
return FALSE;
}
ctx->cur++;
}
if (src->SrcRegisterExtMod.Absolute) {
eat_opt_white( &ctx->cur );
if (*ctx->cur != '|') {
report_error( ctx, "Expected `|'" );
return FALSE;
}
ctx->cur++;
}
if (src->SrcRegisterExtMod.Negate) {
eat_opt_white( &ctx->cur );
if (*ctx->cur != ')') {
report_error( ctx, "Expected `)'" );
return FALSE;
}
ctx->cur++;
}
return TRUE;
}