Plexi09/eden-miror
1
0
Fork 0
mirror of https://git.eden-emu.dev/eden-emu/eden synced 2026-06-28 07:35:34 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

[shader_recompiler/ir] fix potential CBuf collision when count mismatches

Browse source 
Signed-off-by: lizzie <lizzie@eden-emu.dev>
This commit is contained in:
lizzie 2026-06-14 23:18:27 -04:00 • committed by crueter
parent 74a6607f8e
commit 46ebff3fca
2 changed files with 17 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

9
src/shader_recompiler/environment.h
View file

@ -38,10 +38,11 @@ struct CbufWordKeyHash {
struct HandleKey {
u32 index, offset, shift_left;
u32 sec_index, sec_offset, sec_shift_left;
u32 count;
bool has_secondary;
constexpr bool operator==(const HandleKey& o) const noexcept {
return std::tie(index, offset, shift_left, sec_index, sec_offset, sec_shift_left, has_secondary)
== std::tie(o.index, o.offset, o.shift_left, o.sec_index, o.sec_offset, o.sec_shift_left, o.has_secondary);
return std::tie(index, offset, shift_left, sec_index, sec_offset, sec_shift_left, count, has_secondary)
== std::tie(o.index, o.offset, o.shift_left, o.sec_index, o.sec_offset, o.sec_shift_left, o.count, o.has_secondary);
}
};
struct HandleKeyHash {
@ -50,8 +51,8 @@ struct HandleKeyHash {
h ^= (size_t(k.shift_left) << 1);
h ^= (size_t(k.sec_index) << 33) ^ (size_t(k.sec_offset) << 2);
h ^= (size_t(k.sec_shift_left) << 3);
h ^= k.has_secondary ? 0x9e3779b97f4a7c15ULL : 0ULL;
return h;
h ^= (size_t(k.count) << 7);
return h ^ (k.has_secondary ? 0x9e3779b97f4a7c15ULL : 0ULL);
}
};

20
src/shader_recompiler/ir_opt/texture_pass.cpp
View file

@ -270,21 +270,25 @@ bool IsTextureInstruction(const IR::Inst& inst) {
static inline u32 ReadCbufCached(Environment& env, u32 index, u32 offset) {
const CbufWordKey k{index, offset};
if (auto it = env.cbuf_word_cache.find(k); it != env.cbuf_word_cache.end()) return it->second;
if (auto it = env.cbuf_word_cache.find(k); it != env.cbuf_word_cache.end())
return it->second;
const u32 v = env.ReadCbufValue(index, offset);
env.cbuf_word_cache.emplace(k, v);
return v;
}
static inline u32 GetTextureHandleCached(Environment& env, const ConstBufferAddr& cbuf) {
const u32 sec_idx = cbuf.has_secondary ? cbuf.secondary_index : cbuf.index;
const u32 sec_off = cbuf.has_secondary ? cbuf.secondary_offset : cbuf.offset;
const HandleKey hk{cbuf.index, cbuf.offset, cbuf.shift_left,
sec_idx, sec_off, cbuf.secondary_shift_left, cbuf.has_secondary};
if (auto it = env.handle_cache.find(hk); it != env.handle_cache.end()) return it->second;
// Must all be uniquely different variables
// If has secondary, then it will be cbuf.secondary_{index|offset}, else its 0.
// So we can just hand it out the raw variable without using sec_idx or sec_off
// because comparing 0 against 0 will yield true.
const HandleKey hk{cbuf.index, cbuf.offset, cbuf.shift_left, cbuf.secondary_index, cbuf.secondary_offset, cbuf.secondary_shift_left, cbuf.count, cbuf.has_secondary};
if (auto it = env.handle_cache.find(hk); it != env.handle_cache.end())
return it->second;
const u32 sec_idx = cbuf.has_secondary ? cbuf.secondary_index : cbuf.index;
const u32 sec_off = cbuf.has_secondary ? cbuf.secondary_offset : cbuf.offset;
const u32 lhs = ReadCbufCached(env, cbuf.index, cbuf.offset) << cbuf.shift_left;
const u32 rhs = ReadCbufCached(env, sec_idx, sec_off) << cbuf.secondary_shift_left;
const u32 rhs = ReadCbufCached(env, sec_idx, sec_off) << cbuf.secondary_shift_left;
const u32 handle = lhs | rhs;
env.handle_cache.emplace(hk, handle);
return handle;