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Correct validity check for 8bit frame buffers.

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Buffer is valid if number of wrong pixels is less than 1%

That is made for Jet Force Gemini, which writes to the area of auxilary buffers,
so strict check does not work.
This commit is contained in:
Sergey Lipskiy 2015-03-12 17:27:02 +06:00
parent 4bc815c6ec
commit d65cdbdefe
1 changed files with 15 additions and 5 deletions
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20
gDP.cpp
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@ -544,15 +544,25 @@ bool CheckForFrameBufferTexture(u32 _address, u32 _bytes)
if (bRes && pBuffer->m_validityChecked != RSP.DList) {
if (pBuffer->m_cleared) {
const u32 color = pBuffer->m_fillcolor & 0xFFFEFFFE;
for (u32 i = pBuffer->m_startAddress + 4; i < pBuffer->m_endAddress; i += 4) {
if (((*(u32*)&RDRAM[i]) & 0xFFFEFFFE) != color) {
frameBufferList().removeBuffer(pBuffer->m_startAddress);
bRes = false;
break;
if (pBuffer->m_size > G_IM_SIZ_8b) {
for (u32 i = pBuffer->m_startAddress + 4; i < pBuffer->m_endAddress; i += 4) {
if (((*(u32*)&RDRAM[i]) & 0xFFFEFFFE) != color) {
bRes = false;
break;
}
}
} else {
u32 wrongPixels = 0;
for (u32 i = pBuffer->m_startAddress + 4; i < pBuffer->m_endAddress; i += 4) {
if (((*(u32*)&RDRAM[i]) & 0xFFFEFFFE) != color)
++wrongPixels;
}
bRes = wrongPixels < (pBuffer->m_endAddress - pBuffer->m_startAddress)/100; // treshold level 1%
}
if (bRes)
pBuffer->m_validityChecked = RSP.DList;
else
frameBufferList().removeBuffer(pBuffer->m_startAddress);
} else if (pBuffer->m_RdramCrc != 0) {
const u32 crc = CRC_Calculate(0xFFFFFFFF, RDRAM + pBuffer->m_startAddress, (VI.width*VI.height) << pBuffer->m_size >> 1);
bRes = (pBuffer->m_RdramCrc == crc);