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Update scroll fog logic. Should fix the credits in virtua fighter and daytona that have fogging applied to the background layer and shouldn't.

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This commit is contained in:
Ian Curtis 2020-09-07 16:25:18 +00:00
parent 1d37358b8c
commit aaa26f678c
1 changed files with 33 additions and 21 deletions
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48
Src/Graphics/New3D/New3D.cpp
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@ -115,7 +115,7 @@ void CNew3D::UploadTextures(unsigned level, unsigned x, unsigned y, unsigned wid
void CNew3D::DrawScrollFog()
{
// ths is my best guess at the logic based upon what games are doing
// this is my best guess at the logic based upon what games are doing
//
// ocean hunter - every viewport has scroll fog values set. Must start with lowest priority layers as the higher ones sometimes are garbage
// scud race - first viewports in priority layer missing scroll values. The latter ones all contain valid scroll values.
@ -124,33 +124,46 @@ void CNew3D::DrawScrollFog()
// sega bassfishing - first viewport in priority 1 sets scroll value. The rest all contain the wrong value + a higher select value ..
// spikeout final - 2nd viewport in the priority layer has scroll values set, none of the others do. It also uses the highest select value
// known bug (vf3) - if you complete the game on a stage that has fogging, that fogging gets carried over into the credits. I did a binary diff on the viewport, it's never updated from the previous stage, neither is the data it's pointing at. Either a game or emulation bug.
float rgba[4];
for (int i = 0; i < 4; i++) {
Viewport *vp = nullptr;
for (auto &n : m_nodes) {
if (n.viewport.priority == i) {
if (!vp && n.viewport.scrollFog) {
vp = &n.viewport; // only start grabbing viewports if there is a scroll value
if (n.viewport.scrollFog) {
rgba[0] = n.viewport.fogParams[0];
rgba[1] = n.viewport.fogParams[1];
rgba[2] = n.viewport.fogParams[2];
rgba[3] = n.viewport.scrollFog;
goto CheckScroll;
}
else if(vp && n.viewport.select == vp->select) {
vp = &n.viewport; // grab the last viewport with the same select value ??
}
}
}
if (vp && vp->scrollFog) {
return;
float rgba[4] = { vp->fogParams[0], vp->fogParams[1], vp->fogParams[2], vp->scrollFog };
CheckScroll:
for (int i = 0; i < 4; i++) {
for (auto &n : m_nodes) {
if (n.viewport.priority == i) {
//if we have a fog density value
if (n.viewport.fogParams[3]) {
if (rgba[0] == n.viewport.fogParams[0] &&
rgba[1] == n.viewport.fogParams[1] &&
rgba[2] == n.viewport.fogParams[2]) {
glViewport(0, 0, m_totalXRes, m_totalYRes); // fill the whole viewport
m_r3dScrollFog.DrawScrollFog(rgba, vp->scrollAtt, vp->fogParams[6], vp->spotFogColor, vp->spotEllipse);
m_r3dScrollFog.DrawScrollFog(rgba, n.viewport.scrollAtt, n.viewport.fogParams[6], n.viewport.spotFogColor, n.viewport.spotEllipse);
return;
}
}
}
}
}
}
bool CNew3D::RenderScene(int priority, bool renderOverlay, Layer layer)
@ -781,6 +794,10 @@ void CNew3D::RenderViewport(UINT32 addr)
{ 1.0, 1.0, 1.0 } // white
};
if ((addr & 0x00FFFFFF) == 0) {
return;
}
// Translate address and obtain pointer
const uint32_t *vpnode = TranslateCullingAddress(addr);
@ -788,10 +805,6 @@ void CNew3D::RenderViewport(UINT32 addr)
return;
}
if (vpnode[0x01] == 0) { // memory probably hasn't been set up yet, abort
return;
}
if (!(vpnode[0] & 0x20)) { // only if viewport enabled
// create node object
@ -804,7 +817,6 @@ void CNew3D::RenderViewport(UINT32 addr)
vp->priority = (vpnode[0] >> 3) & 0x3;
vp->select = (vpnode[0] >> 8) & 0x3;
vp->number = (vpnode[0] >> 10);
m_currentPriority = vp->priority;
// Fetch viewport parameters (TO-DO: would rounding make a difference?)