diff options
Diffstat (limited to 'Source/Core/VideoCommon/Src/BPStructs.cpp')
| -rw-r--r-- | Source/Core/VideoCommon/Src/BPStructs.cpp | 39 |
1 files changed, 30 insertions, 9 deletions
diff --git a/Source/Core/VideoCommon/Src/BPStructs.cpp b/Source/Core/VideoCommon/Src/BPStructs.cpp index 88556cbee8..c975b12240 100644 --- a/Source/Core/VideoCommon/Src/BPStructs.cpp +++ b/Source/Core/VideoCommon/Src/BPStructs.cpp @@ -497,18 +497,39 @@ void BPWritten(const BPCmd& bp) // if this is different from 0, manual TMEM management is used (GX_PreloadEntireTexture). if (bp.newvalue != 0) { - // NOTE(neobrain): Apparently tmemodd doesn't affect hardware behavior at all (libogc uses it just as a buffer and switches its contents with tmemeven whenever this is called) + // TODO: Not quite sure if this is completely correct (likely not) + // NOTE: libogc's implementation of GX_PreloadEntireTexture seems flawed, so it's not necessarily a good reference for RE'ing this feature. + BPS_TmemConfig& tmem_cfg = bpmem.tmem_config; - u8* ram_ptr = Memory::GetPointer(tmem_cfg.preload_addr << 5); - u32 tmem_addr = tmem_cfg.preload_tmem_even * TMEM_LINE_SIZE; - u32 size = tmem_cfg.preload_tile_info.count * 32; + u8* src_ptr = Memory::GetPointer(tmem_cfg.preload_addr << 5); // TODO: Should we add mask here on GC? + u32 size = tmem_cfg.preload_tile_info.count * TMEM_LINE_SIZE; + u32 tmem_addr_even = tmem_cfg.preload_tmem_even * TMEM_LINE_SIZE; + + if (tmem_cfg.preload_tile_info.type != 3) + { + if (tmem_addr_even + size > TMEM_SIZE) + size = TMEM_SIZE - tmem_addr_even; - // Check if the game has overflowed TMEM, and copy up to the limit. - // Paper Mario does this when entering the Great Boogly Tree (Chap 2) - if ((tmem_addr + size) > TMEM_SIZE) - size = TMEM_SIZE - tmem_addr; + memcpy(texMem + tmem_addr_even, src_ptr, size); + } + else // RGBA8 tiles (and CI14, but that might just be stupid libogc!) + { + // AR and GB tiles are stored in separate TMEM banks => can't use a single memcpy for everything + u32 tmem_addr_odd = tmem_cfg.preload_tmem_odd * TMEM_LINE_SIZE; - memcpy(texMem + tmem_addr, ram_ptr, size); + for (int i = 0; i < tmem_cfg.preload_tile_info.count; ++i) + { + if (tmem_addr_even + TMEM_LINE_SIZE > TMEM_SIZE || + tmem_addr_even + TMEM_LINE_SIZE > TMEM_SIZE) + break; + + memcpy(texMem + tmem_addr_even, src_ptr, TMEM_LINE_SIZE); + memcpy(texMem + tmem_addr_odd, src_ptr + TMEM_LINE_SIZE, TMEM_LINE_SIZE); + tmem_addr_even += TMEM_LINE_SIZE; + tmem_addr_odd += TMEM_LINE_SIZE; + src_ptr += TMEM_LINE_SIZE * 2; + } + } } break; |