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Cxbx-Reloaded
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Fix flicker in antialias sample 

Improve X_D3DSWAP_COPY behaviour
This commit is contained in:
Anthony 2021-09-14 20:37:22 +12:00
parent ac68fd481c
commit b804ed1f03
1 changed files with 15 additions and 6 deletions
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21
src/core/hle/D3D8/Direct3D9/Direct3D9.cpp
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@ -183,6 +183,8 @@ static xbox::X_D3DBaseTexture CxbxActiveTextureCopies[xbox::X_D3DTS_STAGE
xbox::X_D3DVIEWPORT8 g_Xbox_Viewport = { 0 };
float g_Xbox_BackbufferScaleX = 1;
float g_Xbox_BackbufferScaleY = 1;
xbox::X_D3DSWAP g_LastD3DSwap = (xbox::X_D3DSWAP) -1;
static constexpr size_t INDEX_BUFFER_CACHE_SIZE = 10000;
@ -2960,6 +2962,12 @@ void GetScreenScaleFactors(float& scaleX, float& scaleY) {
return;
}
if (g_LastD3DSwap == xbox::X_D3DSWAP_COPY) {
// HACK: Pretend we are drawing to the frontbuffer
// by disabling scale factors.
return;
}
// Example:
// NFS HP2 renders in-game at 640*480
// The title uses MSAA, which increases the rendertarget size, but leaves the screen scale unaffected
@ -5203,13 +5211,14 @@ xbox::dword_xt WINAPI xbox::EMUPATCH(D3DDevice_Swap)
if (Flags != 0 && Flags != CXBX_SWAP_PRESENT_FORWARD)
LOG_TEST_CASE("D3DDevice_Swap: Flags != 0");
// TODO handle swap flags
if (Flags & X_D3DSWAP_COPY) {
// This flag resets the backbuffer scale?
g_LastD3DSwap = (xbox::X_D3DSWAP) Flags;
// TODO handle swap flags correctly
if (Flags == X_D3DSWAP_COPY) {
// Test case: Antialias sample, Backbufferscale use this flag
// Test case: Need for Speed: Hot Pursuit 2 does not, but uses backbufferscale
g_Xbox_BackbufferScaleX = 1;
g_Xbox_BackbufferScaleY = 1;
// This is supposed to allow rendering to the frontbuffer, but we don't maintain one right now
// Return so we don't Present
return g_Xbox_SwapData.Swap;
}
// Fetch the host backbuffer