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Merge vram dirty tracking

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Squashed commit of the following:

commit b463a05d4b909372f0cd1ad91caa0c77a25e5901
Author: RSDuck <rsduck@users.noreply.github.com>
Date:   Mon Nov 30 01:55:35 2020 +0100

    minor fix

commit ce73cebbdf5da243d7ebade82d8799ded9cd6b28
Author: RSDuck <rsduck@users.noreply.github.com>
Date:   Mon Nov 30 00:43:08 2020 +0100

    fix dirty flags of BG/OBJ mappings not being reset

commit fc5d73a6178e3adc444398bdd23de8314b5ca8f8
Author: RSDuck <rsduck@users.noreply.github.com>
Date:   Mon Nov 30 00:11:13 2020 +0100

    use flat vram for gpu2d everywhere

commit 34ee9fe2bf04fcfa2a5a1c8d78d70007e606f1a2
Author: RSDuck <rsduck@users.noreply.github.com>
Date:   Sat Nov 28 19:10:34 2020 +0100

    mark VRAM dirty for display capture

commit e8778fa2f429c6df0eece19d6a5ee83ae23a0cf4
Author: RSDuck <rsduck@users.noreply.github.com>
Date:   Sat Nov 28 18:59:31 2020 +0100

    use flat VRAM for textures and texpals
    also skip rendering if nothing changed and a bunch of fixes

commit 53f2041e2e1a28b35702a2ed51de885c36689f71
Author: RSDuck <rsduck@users.noreply.github.com>
Date:   Fri Nov 27 18:29:56 2020 +0100

    use vram dirty tracking for extpals
    also preparations to take this further

commit 4cdfa329e95aed26d3b21319c8fd86a04abf20f7
Author: RSDuck <rsduck@users.noreply.github.com>
Date:   Mon Nov 16 23:32:22 2020 +0100

    VRAM dirty tracking
This commit is contained in:
RSDuck
2020-11-30 16:58:52 +01:00
parent acb272ed78
commit 6e8bac3909
10 changed files with 765 additions and 215 deletions
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338
src/GPU.cpp
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@ -49,8 +49,8 @@ u8 VRAM_F[ 16*1024];
u8 VRAM_G[ 16*1024];
u8 VRAM_H[ 32*1024];
u8 VRAM_I[ 16*1024];
u8* VRAM[9] = {VRAM_A, VRAM_B, VRAM_C, VRAM_D, VRAM_E, VRAM_F, VRAM_G, VRAM_H, VRAM_I};
u32 VRAMMask[9] = {0x1FFFF, 0x1FFFF, 0x1FFFF, 0x1FFFF, 0xFFFF, 0x3FFF, 0x3FFF, 0x7FFF, 0x3FFF};
u8* const VRAM[9] = {VRAM_A, VRAM_B, VRAM_C, VRAM_D, VRAM_E, VRAM_F, VRAM_G, VRAM_H, VRAM_I};
u32 const VRAMMask[9] = {0x1FFFF, 0x1FFFF, 0x1FFFF, 0x1FFFF, 0xFFFF, 0x3FFF, 0x3FFF, 0x7FFF, 0x3FFF};
u8 VRAMCNT[9];
u8 VRAMSTAT;
@ -85,6 +85,62 @@ bool Accelerated;
GPU2D* GPU2D_A;
GPU2D* GPU2D_B;
/*
VRAM invalidation tracking
- we want to know when a VRAM region used for graphics changed
- for some regions unmapping is mandatory to modify them (Texture, TexPal and ExtPal) and
we don't want to completely invalidate them every time they're unmapped and remapped
For this reason we don't track the dirtyness per mapping region, but instead per VRAM bank
with VRAMDirty. Writes to LCDC go directly into VRAMDirty, while writes via other mapping regions
like BG or OBJ are first tracked in VRAMWritten_* and need to be flushed using SyncDirtyFlags.
This is more or less a description of VRAMTrackingSet::DeriveState
Each time before the memory is read two things could have happened
to each 16kb piece (16kb is the smallest unit in which mappings can
be made thus also the size VRAMMap_* use):
- this piece was remapped compared to last time we checked,
which means this location in memory is invalid.
- this piece wasn't remapped, which means we need to check whether
it was changed. This can be archived by checking VRAMDirty.
VRAMDirty need to be reset for the respective VRAM bank.
*/
VRAMTrackingSet<512*1024, 16*1024> VRAMDirty_ABG;
VRAMTrackingSet<256*1024, 16*1024> VRAMDirty_AOBJ;
VRAMTrackingSet<128*1024, 16*1024> VRAMDirty_BBG;
VRAMTrackingSet<128*1024, 16*1024> VRAMDirty_BOBJ;
VRAMTrackingSet<32*1024, 8*1024> VRAMDirty_ABGExtPal;
VRAMTrackingSet<32*1024, 8*1024> VRAMDirty_BBGExtPal;
VRAMTrackingSet<8*1024, 8*1024> VRAMDirty_AOBJExtPal;
VRAMTrackingSet<8*1024, 8*1024> VRAMDirty_BOBJExtPal;
VRAMTrackingSet<512*1024, 128*1024> VRAMDirty_Texture;
VRAMTrackingSet<128*1024, 16*1024> VRAMDirty_TexPal;
NonStupidBitField<512*1024/VRAMDirtyGranularity> VRAMWritten_ABG;
NonStupidBitField<256*1024/VRAMDirtyGranularity> VRAMWritten_AOBJ;
NonStupidBitField<128*1024/VRAMDirtyGranularity> VRAMWritten_BBG;
NonStupidBitField<128*1024/VRAMDirtyGranularity> VRAMWritten_BOBJ;
NonStupidBitField<256*1024/VRAMDirtyGranularity> VRAMWritten_ARM7;
NonStupidBitField<128*1024/VRAMDirtyGranularity> VRAMDirty[9];
u8 VRAMFlat_ABG[512*1024];
u8 VRAMFlat_BBG[128*1024];
u8 VRAMFlat_AOBJ[256*1024];
u8 VRAMFlat_BOBJ[128*1024];
u8 VRAMFlat_ABGExtPal[32*1024];
u8 VRAMFlat_BBGExtPal[32*1024];
u8 VRAMFlat_AOBJExtPal[8*1024];
u8 VRAMFlat_BOBJExtPal[8*1024];
u8 VRAMFlat_Texture[512*1024];
u8 VRAMFlat_TexPal[128*1024];
bool Init()
{
@ -113,6 +169,30 @@ void DeInit()
if (Framebuffer[1][1]) delete[] Framebuffer[1][1];
}
void ResetVRAMCache()
{
for (int i = 0; i < 9; i++)
VRAMDirty[i] = NonStupidBitField<128*1024/VRAMDirtyGranularity>();
VRAMDirty_ABG.Reset();
VRAMDirty_BBG.Reset();
VRAMDirty_AOBJ.Reset();
VRAMDirty_BOBJ.Reset();
VRAMDirty_ABGExtPal.Reset();
VRAMDirty_BBGExtPal.Reset();
VRAMDirty_AOBJExtPal.Reset();
VRAMDirty_BOBJExtPal.Reset();
memset(VRAMFlat_ABG, 0, sizeof(VRAMFlat_ABG));
memset(VRAMFlat_BBG, 0, sizeof(VRAMFlat_BBG));
memset(VRAMFlat_AOBJ, 0, sizeof(VRAMFlat_AOBJ));
memset(VRAMFlat_BOBJ, 0, sizeof(VRAMFlat_BOBJ));
memset(VRAMFlat_ABGExtPal, 0, sizeof(VRAMFlat_ABGExtPal));
memset(VRAMFlat_BBGExtPal, 0, sizeof(VRAMFlat_BBGExtPal));
memset(VRAMFlat_AOBJExtPal, 0, sizeof(VRAMFlat_AOBJExtPal));
memset(VRAMFlat_BOBJExtPal, 0, sizeof(VRAMFlat_BOBJExtPal));
}
void Reset()
{
VCount = 0;
@ -186,6 +266,8 @@ void Reset()
GPU2D_B->SetFramebuffer(Framebuffer[backbuf][0]);
ResetRenderer();
ResetVRAMCache();
}
void Stop()
@ -261,6 +343,8 @@ void DoSavestate(Savestate* file)
GPU2D_A->DoSavestate(file);
GPU2D_B->DoSavestate(file);
GPU3D::DoSavestate(file);
ResetVRAMCache();
}
void AssignFramebuffers()
@ -411,18 +495,8 @@ void SetRenderSettings(int renderer, RenderSettings& settings)
u8* GetUniqueBankPtr(u32 mask, u32 offset)
{
if (!mask) return NULL;
int num = 0;
if (!(mask & 0xFF)) { mask >>= 8; num += 8; }
else
{
if (!(mask & 0xF)) { mask >>= 4; num += 4; }
if (!(mask & 0x3)) { mask >>= 2; num += 2; }
if (!(mask & 0x1)) { mask >>= 1; num += 1; }
}
if (mask != 1) return NULL;
if (!mask || (mask & (mask - 1)) != 0) return NULL;
int num = __builtin_ctz(mask);
return &VRAM[num][offset & VRAMMask[num]];
}
@ -606,8 +680,6 @@ void MapVRAM_E(u32 bank, u8 cnt)
case 4: // ABG ext palette
UNMAP_RANGE(ABGExtPal, 0, 4);
GPU2D_A->BGExtPalDirty(0);
GPU2D_A->BGExtPalDirty(2);
break;
}
}
@ -634,8 +706,6 @@ void MapVRAM_E(u32 bank, u8 cnt)
case 4: // ABG ext palette
MAP_RANGE(ABGExtPal, 0, 4);
GPU2D_A->BGExtPalDirty(0);
GPU2D_A->BGExtPalDirty(2);
break;
}
}
@ -687,12 +757,10 @@ void MapVRAM_FG(u32 bank, u8 cnt)
case 4: // ABG ext palette
VRAMMap_ABGExtPal[((oldofs & 0x1) << 1)] &= ~bankmask;
VRAMMap_ABGExtPal[((oldofs & 0x1) << 1) + 1] &= ~bankmask;
GPU2D_A->BGExtPalDirty((oldofs & 0x1) << 1);
break;
case 5: // AOBJ ext palette
VRAMMap_AOBJExtPal &= ~bankmask;
GPU2D_A->OBJExtPalDirty();
break;
}
}
@ -732,12 +800,10 @@ void MapVRAM_FG(u32 bank, u8 cnt)
case 4: // ABG ext palette
VRAMMap_ABGExtPal[((ofs & 0x1) << 1)] |= bankmask;
VRAMMap_ABGExtPal[((ofs & 0x1) << 1) + 1] |= bankmask;
GPU2D_A->BGExtPalDirty((ofs & 0x1) << 1);
break;
case 5: // AOBJ ext palette
VRAMMap_AOBJExtPal |= bankmask;
GPU2D_A->OBJExtPalDirty();
break;
}
}
@ -773,8 +839,6 @@ void MapVRAM_H(u32 bank, u8 cnt)
case 2: // BBG ext palette
UNMAP_RANGE(BBGExtPal, 0, 4);
GPU2D_B->BGExtPalDirty(0);
GPU2D_B->BGExtPalDirty(2);
break;
}
}
@ -800,8 +864,6 @@ void MapVRAM_H(u32 bank, u8 cnt)
case 2: // BBG ext palette
MAP_RANGE(BBGExtPal, 0, 4);
GPU2D_B->BGExtPalDirty(0);
GPU2D_B->BGExtPalDirty(2);
break;
}
}
@ -841,7 +903,6 @@ void MapVRAM_I(u32 bank, u8 cnt)
case 3: // BOBJ ext palette
VRAMMap_BOBJExtPal &= ~bankmask;
GPU2D_B->OBJExtPalDirty();
break;
}
}
@ -871,7 +932,6 @@ void MapVRAM_I(u32 bank, u8 cnt)
case 3: // BOBJ ext palette
VRAMMap_BOBJExtPal |= bankmask;
GPU2D_B->OBJExtPalDirty();
break;
}
}
@ -937,6 +997,8 @@ void StartHBlank(u32 line)
DispStat[0] |= (1<<1);
DispStat[1] |= (1<<1);
SyncDirtyFlags();
if (VCount < 192)
{
// draw
@ -1096,4 +1158,224 @@ void SetVCount(u16 val)
NextVCount = val;
}
template <u32 Size, u32 MappingGranularity>
NonStupidBitField<Size/VRAMDirtyGranularity> VRAMTrackingSet<Size, MappingGranularity>::DeriveState(u32* currentMappings)
{
NonStupidBitField<Size/VRAMDirtyGranularity> result;
u16 banksToBeZeroed = 0;
for (u32 i = 0; i < Size / MappingGranularity; i++)
{
if (currentMappings[i] != Mapping[i])
{
result |= NonStupidBitField<Size/VRAMDirtyGranularity>(i*VRAMBitsPerMapping, VRAMBitsPerMapping);
banksToBeZeroed |= currentMappings[i];
Mapping[i] = currentMappings[i];
}
else
{
u32 mapping = Mapping[i];
banksToBeZeroed |= mapping;
while (mapping != 0)
{
u32 num = __builtin_ctz(mapping);
mapping &= ~(1 << num);
// hack for **speed**
// this could probably be done less ugly but then we would rely
// on the compiler for vectorisation
static_assert(VRAMDirtyGranularity == 512);
if (MappingGranularity == 16*1024)
{
u32 dirty = ((u32*)VRAMDirty[num].Data)[i & (VRAMMask[num] >> 14)];
((u32*)result.Data)[i] |= dirty;
}
else if (MappingGranularity == 8*1024)
{
u16 dirty = ((u16*)VRAMDirty[num].Data)[i & (VRAMMask[num] >> 13)];
((u16*)result.Data)[i] |= dirty;
}
else if (MappingGranularity == 128*1024)
{
((u64*)result.Data)[i * 4 + 0] |= ((u64*)VRAMDirty[num].Data)[0];
((u64*)result.Data)[i * 4 + 1] |= ((u64*)VRAMDirty[num].Data)[1];
((u64*)result.Data)[i * 4 + 2] |= ((u64*)VRAMDirty[num].Data)[2];
((u64*)result.Data)[i * 4 + 3] |= ((u64*)VRAMDirty[num].Data)[3];
}
else
{
// welp
abort();
}
}
}
}
while (banksToBeZeroed != 0)
{
u32 num = __builtin_ctz(banksToBeZeroed);
banksToBeZeroed &= ~(1 << num);
memset(VRAMDirty[num].Data, 0, sizeof(VRAMDirty[num].Data));
}
return result;
}
template NonStupidBitField<32*1024/VRAMDirtyGranularity> VRAMTrackingSet<32*1024, 8*1024>::DeriveState(u32*);
template NonStupidBitField<8*1024/VRAMDirtyGranularity> VRAMTrackingSet<8*1024, 8*1024>::DeriveState(u32*);
template NonStupidBitField<512*1024/VRAMDirtyGranularity> VRAMTrackingSet<512*1024, 128*1024>::DeriveState(u32*);
template NonStupidBitField<128*1024/VRAMDirtyGranularity> VRAMTrackingSet<128*1024, 16*1024>::DeriveState(u32*);
template NonStupidBitField<256*1024/VRAMDirtyGranularity> VRAMTrackingSet<256*1024, 16*1024>::DeriveState(u32*);
template NonStupidBitField<512*1024/VRAMDirtyGranularity> VRAMTrackingSet<512*1024, 16*1024>::DeriveState(u32*);
template <u32 Size>
void SyncDirtyFlags(u32* mappings, NonStupidBitField<Size>& writtenFlags)
{
const u32 VRAMWrittenBitsPer16KB = 16*1024/VRAMDirtyGranularity;
for (typename NonStupidBitField<Size>::Iterator it = writtenFlags.Begin(); it != writtenFlags.End(); it++)
{
u32 mapping = mappings[*it / VRAMWrittenBitsPer16KB];
while (mapping != 0)
{
u32 num = __builtin_ctz(mapping);
VRAMDirty[num][*it & (VRAMMask[num] / VRAMDirtyGranularity)] = true;
mapping &= ~(1 << num);
}
}
memset(writtenFlags.Data, 0, sizeof(writtenFlags.Data));
}
void SyncDirtyFlags()
{
SyncDirtyFlags(VRAMMap_ABG, VRAMWritten_ABG);
SyncDirtyFlags(VRAMMap_AOBJ, VRAMWritten_AOBJ);
SyncDirtyFlags(VRAMMap_BBG, VRAMWritten_BBG);
SyncDirtyFlags(VRAMMap_BOBJ, VRAMWritten_BOBJ);
SyncDirtyFlags(VRAMMap_ARM7, VRAMWritten_ARM7);
}
template <u32 MappingGranularity, u32 Size>
inline bool CopyLinearVRAM(u8* flat, u32* mappings, NonStupidBitField<Size>& dirty, u64 (*slowAccess)(u32 addr))
{
const u32 VRAMBitsPerMapping = MappingGranularity / VRAMDirtyGranularity;
bool change = false;
typename NonStupidBitField<Size>::Iterator it = dirty.Begin();
while (it != dirty.End())
{
u32 offset = *it * VRAMDirtyGranularity;
u8* dst = flat + offset;
u8* fastAccess = GetUniqueBankPtr(mappings[*it / VRAMBitsPerMapping], offset);
if (fastAccess)
{
memcpy(dst, fastAccess, VRAMDirtyGranularity);
}
else
{
for (u32 i = 0; i < VRAMDirtyGranularity; i += 8)
*(u64*)&dst[i] = slowAccess(offset + i);
}
change = true;
it++;
}
return change;
}
bool MakeVRAMFlat_TextureCoherent(NonStupidBitField<512*1024/VRAMDirtyGranularity>& dirty)
{
return CopyLinearVRAM<128*1024>(VRAMFlat_Texture, VRAMMap_Texture, dirty, ReadVRAM_Texture<u64>);
}
bool MakeVRAMFlat_TexPalCoherent(NonStupidBitField<128*1024/VRAMDirtyGranularity>& dirty)
{
return CopyLinearVRAM<16*1024>(VRAMFlat_TexPal, VRAMMap_TexPal, dirty, ReadVRAM_TexPal<u64>);
}
bool MakeVRAMFlat_ABGCoherent(NonStupidBitField<512*1024/VRAMDirtyGranularity>& dirty)
{
return CopyLinearVRAM<16*1024>(VRAMFlat_ABG, VRAMMap_ABG, dirty, ReadVRAM_ABG<u64>);
}
bool MakeVRAMFlat_BBGCoherent(NonStupidBitField<128*1024/VRAMDirtyGranularity>& dirty)
{
return CopyLinearVRAM<16*1024>(VRAMFlat_BBG, VRAMMap_BBG, dirty, ReadVRAM_BBG<u64>);
}
bool MakeVRAMFlat_AOBJCoherent(NonStupidBitField<256*1024/VRAMDirtyGranularity>& dirty)
{
return CopyLinearVRAM<16*1024>(VRAMFlat_AOBJ, VRAMMap_AOBJ, dirty, ReadVRAM_AOBJ<u64>);
}
bool MakeVRAMFlat_BOBJCoherent(NonStupidBitField<128*1024/VRAMDirtyGranularity>& dirty)
{
return CopyLinearVRAM<16*1024>(VRAMFlat_BOBJ, VRAMMap_BOBJ, dirty, ReadVRAM_BOBJ<u64>);
}
template<typename T>
T ReadVRAM_ABGExtPal(u32 addr)
{
u32 mask = VRAMMap_ABGExtPal[(addr >> 13) & 0x3];
T ret = 0;
if (mask & (1<<4)) ret |= *(T*)&VRAM_E[addr & 0x7FFF];
if (mask & (1<<5)) ret |= *(T*)&VRAM_F[addr & 0x3FFF];
if (mask & (1<<6)) ret |= *(T*)&VRAM_G[addr & 0x3FFF];
return ret;
}
template<typename T>
T ReadVRAM_BBGExtPal(u32 addr)
{
u32 mask = VRAMMap_BBGExtPal[(addr >> 13) & 0x3];
T ret = 0;
if (mask & (1<<7)) ret |= *(T*)&VRAM_H[addr & 0x7FFF];
return ret;
}
template<typename T>
T ReadVRAM_AOBJExtPal(u32 addr)
{
u32 mask = VRAMMap_AOBJExtPal;
T ret = 0;
if (mask & (1<<4)) ret |= *(T*)&VRAM_F[addr & 0x1FFF];
if (mask & (1<<5)) ret |= *(T*)&VRAM_G[addr & 0x1FFF];
return ret;
}
template<typename T>
T ReadVRAM_BOBJExtPal(u32 addr)
{
u32 mask = VRAMMap_BOBJExtPal;
T ret = 0;
if (mask & (1<<8)) ret |= *(T*)&VRAM_I[addr & 0x1FFF];
return ret;
}
bool MakeVRAMFlat_ABGExtPalCoherent(NonStupidBitField<32*1024/VRAMDirtyGranularity>& dirty)
{
return CopyLinearVRAM<8*1024>(VRAMFlat_ABGExtPal, VRAMMap_ABGExtPal, dirty, ReadVRAM_ABGExtPal<u64>);
}
bool MakeVRAMFlat_BBGExtPalCoherent(NonStupidBitField<32*1024/VRAMDirtyGranularity>& dirty)
{
return CopyLinearVRAM<8*1024>(VRAMFlat_BBGExtPal, VRAMMap_BBGExtPal, dirty, ReadVRAM_BBGExtPal<u64>);
}
bool MakeVRAMFlat_AOBJExtPalCoherent(NonStupidBitField<8*1024/VRAMDirtyGranularity>& dirty)
{
return CopyLinearVRAM<8*1024>(VRAMFlat_AOBJExtPal, &VRAMMap_AOBJExtPal, dirty, ReadVRAM_AOBJExtPal<u64>);
}
bool MakeVRAMFlat_BOBJExtPalCoherent(NonStupidBitField<8*1024/VRAMDirtyGranularity>& dirty)
{
return CopyLinearVRAM<8*1024>(VRAMFlat_BOBJExtPal, &VRAMMap_BOBJExtPal, dirty, ReadVRAM_BOBJExtPal<u64>);
}
}