// 32 bit frames have additional constraints to frame
// maxpos was maximum length of frame at normal constraints
inline void VB::CheckFrame32bitRes(int maxpos)
{
int fbh = frame.fbh;
if (frame.fbh >= 512)
{
// neopets hack
maxmin = min(maxmin, frame.fbh);
frame.fbh = maxmin;
ConstraintReason = 8;
}
// ffxii hack to stop resolving
if (frame.fbp >= 0x3000 && fbh >= 0x1a0)
{
int endfbp = frame.fbp + frame.fbw * fbh / (PSMT_ISHALF(gsfb.psm) ? 128 : 64);
// see if there is a previous render target in the way, reduce
for (CRenderTargetMngr::MAPTARGETS::iterator itnew = s_RTs.mapTargets.begin(); itnew != s_RTs.mapTargets.end(); ++itnew)
{
if (itnew->second->fbp > frame.fbp && endfbp > itnew->second->fbp)
{
endfbp = itnew->second->fbp;
}
}
frame.fbh = (endfbp - frame.fbp) * (PSMT_ISHALF(gsfb.psm) ? 128 : 64) / frame.fbw;
if (frame.fbh < fbh) ConstraintReason = 9;
}
}
inline bool CheckWidthIsSame(const frameInfo& frame, CRenderTarget* ptarg)
{
if (PSMT_ISHALF(frame.psm) == PSMT_ISHALF(ptarg->psm))
return (frame.fbw == ptarg->fbw);
if (PSMT_ISHALF(frame.psm))
return (frame.fbw == 2 * ptarg->fbw);
else
return (2 * frame.fbw == ptarg->fbw);
}
// Check if after resizing, a new render target is needed to be used. Also perform deptarget check.
// Returns 1 if only 1 render target is changed and 3 -- if both.
inline int VB::CheckFrameResolveRender(int tbp)
{
int result = 0;
CRenderTarget* pprevrndr = prndr;
prndr = NULL;
CDepthTarget* pprevdepth = pdepth;
pdepth = NULL;
// Set renderes to NULL to prevent Flushing.
CRenderTarget* pnewtarg = s_RTs.GetTarg(frame, 0, maxmin);
assert(pnewtarg != NULL);
// pnewtarg->fbh >= 0x1c0 needed for ffx
if ((pnewtarg->fbh >= 0x1c0) && pnewtarg->fbh > frame.fbh && zbuf.zbp < tbp && !zbuf.zmsk)
{
// check if zbuf is in the way of the texture (suikoden5)
int maxallowedfbh = (tbp - zbuf.zbp) * (PSMT_ISHALF(zbuf.psm) ? 128 : 64) / gsfb.fbw;
if (PSMT_ISHALF(gsfb.psm)) maxallowedfbh *= 2;
if (pnewtarg->fbh > maxallowedfbh + 32) // +32 needed for ffx2
{
// destroy and recreate
s_RTs.DestroyAllTargs(0, 0x100, pnewtarg->fbw);
pnewtarg = s_RTs.GetTarg(frame, 0, maxmin);
assert(pnewtarg != NULL);
}
}
ZZLog::Prim_Log("frame_%d: fbp=0x%x fbw=%d fbh=%d(%d) psm=0x%x fbm=0x%x\n", ictx, gsfb.fbp, gsfb.fbw, gsfb.fbh, pnewtarg->fbh, gsfb.psm, gsfb.fbm);
if ((pprevrndr != pnewtarg) || (pprevrndr != NULL && (pprevrndr->status & CRenderTarget::TS_NeedUpdate)))
result = 1;
prndr = pnewtarg;
pdepth = pprevdepth;
result |= CheckFrameResolveDepth(tbp);
return result;
}
// Return number of 64-pixels block, that guaranted could be hold in memory
// from gsfb.fbp and tbp (textrure pase), zbuf.zbp (Z-buffer), frame.fbp
// (previous frame).
inline int VB::FindMinimalMemoryConstrain(int tbp, int maxpos)
{
int MinConstraint = maxpos;
// make sure texture is far away from tbp
{
int Constraint = tbp - gsfb.fbp;
if ((0 < Constraint) && (Constraint < MinConstraint))
{
MinConstraint = Constraint;
ConstraintReason = 1;
}
}
// offroad uses 0x80 fbp which messes up targets
// special case when double buffering (hamsterball)
// Suikoden 3 require e00 have this issue too. P3 - 0x1000.
if (prndr != NULL)
{
int Constraint = frame.fbp - gsfb.fbp;
if ((0x0 < Constraint) && (Constraint < MinConstraint))
{
MinConstraint = Constraint;
ConstraintReason = 2;
}
}
// old caching method
// zmsk necessary for KH movie
if (!zbuf.zmsk)
{
int Constraint = zbuf.zbp - gsfb.fbp;
if ((0 < Constraint) && (Constraint < MinConstraint))
{
MinConstraint = Constraint;
ConstraintReason = 3;
}
}
// In 16Bit mode in one Word frame stored 2 pixels
if (PSMT_ISHALF(gsfb.psm)) MinConstraint *= 2;
return MinConstraint ;
}
// This is the main code for frame resizing.
// It checks for several reasons to resize and resizes if it needs to.
// 4Mb memory in 64 bit (4 bytes) words.
// |------------------------|---------------------|----------|----------|---------------------|
// 0 gsfb.fbp zbuff.zpb tbp frame.fbp 2^20/64
inline int VB::CheckFrameAddConstraints(int tbp)
{
if (gsfb.fbw <= 0)
{
ERROR_LOG_SPAM("render target null, no constraints. Ignoring\n");
return -1;
}
// Memory region after fbp
int maxmemorypos = 0x4000 - gsfb.fbp;
ConstraintReason = 0;
maxmemorypos = FindMinimalMemoryConstrain(tbp, maxmemorypos);
maxmemorypos = FindZbufferMemoryConstrain(tbp, maxmemorypos);
int maxpos = 64 * maxmemorypos ;
maxpos /= gsfb.fbw;
//? atelier iris crashes without it
if (maxpos > 256) maxpos &= ~0x1f;
#ifdef DEVBUILD
int noscissorpos = maxpos;
int ConstrainR1 = ConstraintReason;
#endif
maxpos = FindMinimalHeightConstrain(maxpos);
frame = gsfb;
frame.fbh = maxpos;
if (!PSMT_ISHALF(frame.psm) || !(conf.settings().full_16_bit_res)) CheckFrame32bitRes(maxpos);
#ifdef DEVBUILD
if (frame.fbh == 0xe2)
ZZLog::Debug_Log("Const: %x %x %d| %x %d %x %x", frame.fbh, frame.fbw, ConstraintReason, noscissorpos, ConstrainR1, tbp, frame.fbp);
#endif
// Fixme: Reserved psm for framebuffers
// gsfb.psm &= 0xf; // shadow tower
return 0;
}
// Return number of 64 pizel words that could be placed in Z-Buffer
// If no Z-buffer present return old constraint
inline int VB::FindZbufferMemoryConstrain(int tbp, int maxpos)
{
int MinConstraint = maxpos;
// Check tbp / zbuffer constraint
if (!zbuf.zmsk)
{
int Constraint = (tbp - zbuf.zbp) * (PSMT_ISHALF(zbuf.psm) ? 2 : 1);
if ((0 < Constraint) && (Constraint < MinConstraint))
{
MinConstraint = Constraint;
ConstraintReason = 4;
}
}
return MinConstraint;
}
void CRenderTarget::SetTarget(int fbplocal, const Rect2& scissor, int context)
{
FUNCLOG
int dy = 0;
if (fbplocal != fbp)
{
float4 v;
// will be rendering to a subregion
u32 bpp = PSMT_ISHALF(psm) ? 2 : 4;
assert(((256 / bpp)*(fbplocal - fbp)) % fbw == 0);
assert(fbplocal >= fbp);
dy = ((256 / bpp) * (fbplocal - fbp)) / fbw;
v.x = vposxy.x;
v.y = vposxy.y;
v.z = vposxy.z;
v.w = vposxy.w - dy * 2.0f / (float)fbh;
ZZshSetParameter4fv(g_vparamPosXY[context], v, "g_fPosXY");
}
else
{
ZZshSetParameter4fv(g_vparamPosXY[context], vposxy, "g_fPosXY");
}
// set render states
// Bleh. I *really* need to fix this. << 3 when setting the scissors, then >> 3 when using them... --Arcum42
scissorrect.x = scissor.x0 >> 3;
scissorrect.y = (scissor.y0 >> 3) + dy;
scissorrect.w = (scissor.x1 >> 3) + 1;
scissorrect.h = (scissor.y1 >> 3) + 1 + dy;
scissorrect.w = min(scissorrect.w, fbw) - scissorrect.x;
scissorrect.h = min(scissorrect.h, fbh) - scissorrect.y;
scissorrect.x = RW(scissorrect.x);
scissorrect.y = RH(scissorrect.y);
scissorrect.w = RW(scissorrect.w);
scissorrect.h = RH(scissorrect.h);
}