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[jak3] Decompile sprite (#3412)

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Decompile `sprite.gc`. Also update the DMA macro for a small change in
Jak 3: a check to see if nothing was added to the bucket.
This commit is contained in:
water111
2024-03-09 12:14:12 -05:00
committed by GitHub
parent 0626862a8c
commit 390a511055
14 changed files with 1962 additions and 108 deletions
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decompiler/analysis/insert_lets.cpp
+48 -4
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@@ -2236,6 +2236,7 @@ FormElement* rewrite_with_dma_buf_add_bucket(LetElement* in, const Env& env, For
if (!mr_buf_base.matched) {
return nullptr;
}
if (!var_equal(env, buf_dst, mr_buf_base.maps.regs.at(0))) {
lg::print("dma buf bad name\n");
return nullptr;
@@ -2251,16 +2252,59 @@ FormElement* rewrite_with_dma_buf_add_bucket(LetElement* in, const Env& env, For
last_part = dynamic_cast<LetElement*>(in->body()->at(in->body()->size() - 1));
if (!last_part) {
// lg::error("NO LAST PART AHH wtf!!");
return nullptr;
}
if (last_part->entries().size() != 1 || last_part->body()->size() != 2) {
// New for Jak 3: they check to see if nothing was added, and skip adding an empty DMA transfer
// if so. This means the usual 2 ending let body forms are now wrapped in a `when`.
const int expected_last_let_body_size = env.version == GameVersion::Jak3 ? 1 : 2;
if (last_part->entries().size() != 1 ||
last_part->body()->size() != expected_last_let_body_size) {
return nullptr;
}
auto buf_end_dst = last_part->entries().at(0).dest;
auto dmatag_let = dynamic_cast<LetElement*>(last_part->body()->at(0));
LetElement* dmatag_let;
FormElement* insert_tag_call;
if (env.version == GameVersion::Jak3) {
// check for the when:
auto outer_when = dynamic_cast<CondNoElseElement*>(last_part->body()->at(0));
if (!outer_when) {
// lg::error(" P no cond-no-else:\n{}\n", last_part->body()->at(0)->to_string(env));
return nullptr;
}
if (outer_when->entries.size() != 1) {
// lg::error(" P cond-no-else bad entry count");
return nullptr;
}
auto& entry = outer_when->entries.at(0);
auto matcher = Matcher::op(GenericOpMatcher::fixed(FixedOperatorKind::NEQ),
{Matcher::any_reg(0), Matcher::any_reg(1)});
auto mr = match(matcher, entry.condition);
if (!mr.matched) {
// lg::error(" P no match: {}\n", entry.condition->to_string(env));
return nullptr;
}
if (!var_equal(env, bucket_dst, mr.maps.regs.at(0)) ||
!var_equal(env, buf_end_dst, mr.maps.regs.at(1))) {
// lg::error(" P bad vars");
return nullptr;
}
auto body = entry.body;
if (body->size() != 2) {
// lg::error(" P bad inner body size");
return nullptr;
}
dmatag_let = dynamic_cast<LetElement*>(body->at(0));
insert_tag_call = body->at(1);
} else {
dmatag_let = dynamic_cast<LetElement*>(last_part->body()->at(0));
insert_tag_call = last_part->body()->at(1);
}
if (!dmatag_let || dmatag_let->entries().size() != 1 || dmatag_let->body()->size() != 4) {
return nullptr;
@@ -2334,7 +2378,7 @@ FormElement* rewrite_with_dma_buf_add_bucket(LetElement* in, const Env& env, For
DerefTokenMatcher::string("bucket-group")}),
Matcher::any(1), Matcher::any_reg(2),
Matcher::cast("(pointer dma-tag)", Matcher::any_reg(3))}),
last_part->body()->at(1));
insert_tag_call);
if (!mr_bucket_add_tag_func.matched ||
!var_equal(env, bucket_dst, mr_bucket_add_tag_func.maps.regs.at(2)) ||
!var_equal(env, buf_end_dst, mr_bucket_add_tag_func.maps.regs.at(3))) {