diff options
| -rw-r--r-- | src/core/memory.cpp | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/src/core/memory.cpp b/src/core/memory.cpp index 68a6b1ac2..2f5cdcefe 100644 --- a/src/core/memory.cpp +++ b/src/core/memory.cpp @@ -316,8 +316,15 @@ void RasterizerMarkRegionCached(PAddr start, u32 size, int count_delta) { for (unsigned i = 0; i < num_pages; ++i, paddr += PAGE_SIZE) { boost::optional<VAddr> maybe_vaddr = PhysicalToVirtualAddress(paddr); - if (!maybe_vaddr) + // While the physical <-> virtual mapping is 1:1 for the regions supported by the cache, + // some games (like Pokemon Super Mystery Dungeon) will try to use textures that go beyond + // the end address of VRAM, causing the Virtual->Physical translation to fail when flushing + // parts of the texture. + if (!maybe_vaddr) { + LOG_ERROR(HW_Memory, + "Trying to flush a cached region to an invalid physical address %08X", paddr); continue; + } VAddr vaddr = *maybe_vaddr; u8& res_count = current_page_table->cached_res_count[vaddr >> PAGE_BITS]; @@ -329,6 +336,10 @@ void RasterizerMarkRegionCached(PAddr start, u32 size, int count_delta) { if (res_count == 0) { PageType& page_type = current_page_table->attributes[vaddr >> PAGE_BITS]; switch (page_type) { + case PageType::Unmapped: + // It is not necessary for a process to have this region mapped into its address + // space, for example, a system module need not have a VRAM mapping. + break; case PageType::Memory: page_type = PageType::RasterizerCachedMemory; current_page_table->pointers[vaddr >> PAGE_BITS] = nullptr; @@ -347,6 +358,10 @@ void RasterizerMarkRegionCached(PAddr start, u32 size, int count_delta) { if (res_count == 0) { PageType& page_type = current_page_table->attributes[vaddr >> PAGE_BITS]; switch (page_type) { + case PageType::Unmapped: + // It is not necessary for a process to have this region mapped into its address + // space, for example, a system module need not have a VRAM mapping. + break; case PageType::RasterizerCachedMemory: { u8* pointer = GetPointerFromVMA(vaddr & ~PAGE_MASK); if (pointer == nullptr) { |