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Add basic support for reading back pixels from GS on D3D9.

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This commit is contained in:
Jean-Philip Desjardins 2016-10-11 09:48:45 -04:00
parent e7b4d79b68
commit b811cf4d3f
1 changed files with 59 additions and 0 deletions
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59
Source/ui_win32/GSH_Direct3D9.cpp
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@ -108,7 +108,66 @@ void CGSH_Direct3D9::ProcessHostToLocalTransfer()
void CGSH_Direct3D9::ProcessLocalToHostTransfer()
{
//This is constrained to work only with ps2autotest, will be unconstrained later
auto bltBuf = make_convertible<BITBLTBUF>(m_nReg[GS_REG_BITBLTBUF]);
auto trxPos = make_convertible<TRXPOS>(m_nReg[GS_REG_TRXPOS]);
auto trxReg = make_convertible<TRXREG>(m_nReg[GS_REG_TRXREG]);
if(bltBuf.nSrcPsm != PSMCT32) return;
uint32 transferAddress = bltBuf.GetSrcPtr();
if(transferAddress != 0) return;
if((trxReg.nRRW != 32) || (trxReg.nRRH != 32)) return;
if((trxPos.nSSAX != 0) || (trxPos.nSSAY != 0)) return;
auto framebufferIterator = std::find_if(m_framebuffers.begin(), m_framebuffers.end(),
[] (const FramebufferPtr& framebuffer)
{
return (framebuffer->m_psm == PSMCT32) && (framebuffer->m_basePtr == 0);
}
);
if(framebufferIterator == std::end(m_framebuffers)) return;
const auto& framebuffer = (*framebufferIterator);
m_renderState.isValid = false;
auto renderTarget = framebuffer->m_renderTarget;
SurfacePtr offscreenSurface, renderTargetSurface;
HRESULT result = S_OK;
result = renderTarget->GetSurfaceLevel(0, &renderTargetSurface);
assert(SUCCEEDED(result));
result = m_device->CreateOffscreenPlainSurface(framebuffer->m_width, framebuffer->m_height, D3DFMT_A8R8G8B8, D3DPOOL_SYSTEMMEM, &offscreenSurface, nullptr);
assert(SUCCEEDED(result));
result = m_device->GetRenderTargetData(renderTargetSurface, offscreenSurface);
assert(SUCCEEDED(result));
D3DLOCKED_RECT lockedRect = {};
result = offscreenSurface->LockRect(&lockedRect, nullptr, D3DLOCK_READONLY);
assert(SUCCEEDED(result));
auto pixels = reinterpret_cast<uint32*>(lockedRect.pBits);
//Write back to RAM
{
CGsPixelFormats::CPixelIndexorPSMCT32 indexor(m_pRAM, bltBuf.GetSrcPtr(), bltBuf.nSrcWidth);
for(uint32 y = trxPos.nSSAY; y < (trxPos.nSSAY + trxReg.nRRH); y++)
{
for(uint32 x = trxPos.nSSAX; x < (trxPos.nSSAX + trxReg.nRRH); x++)
{
uint32 pixel = pixels[x + (y * lockedRect.Pitch / 4)];
indexor.SetPixel(x, y, pixel);
}
}
}
result = offscreenSurface->UnlockRect();
assert(SUCCEEDED(result));
}
void CGSH_Direct3D9::ProcessLocalToLocalTransfer()