mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2025-07-23 06:09:50 -06:00
Reimplement Bounding Box calculation using the software renderer.
This commit is contained in:
@ -14,6 +14,7 @@
|
||||
|
||||
#include "VideoCommon/PixelEngine.h"
|
||||
#include "VideoCommon/TextureDecoder.h"
|
||||
#include "VideoCommon/BoundingBox.h"
|
||||
#include "VideoCommon/VideoCommon.h"
|
||||
|
||||
|
||||
@ -73,12 +74,12 @@ void SWBPWritten(int address, int newvalue)
|
||||
EfbCopy::CopyEfb();
|
||||
break;
|
||||
case BPMEM_CLEARBBOX1:
|
||||
PixelEngine::bbox[0] = newvalue >> 10;
|
||||
PixelEngine::bbox[1] = newvalue & 0x3ff;
|
||||
BoundingBox::coords[BoundingBox::LEFT] = newvalue >> 10;
|
||||
BoundingBox::coords[BoundingBox::RIGHT] = newvalue & 0x3ff;
|
||||
break;
|
||||
case BPMEM_CLEARBBOX2:
|
||||
PixelEngine::bbox[2] = newvalue >> 10;
|
||||
PixelEngine::bbox[3] = newvalue & 0x3ff;
|
||||
BoundingBox::coords[BoundingBox::TOP] = newvalue >> 10;
|
||||
BoundingBox::coords[BoundingBox::BOTTOM] = newvalue & 0x3ff;
|
||||
break;
|
||||
case BPMEM_CLEAR_PIXEL_PERF:
|
||||
// TODO: I didn't test if the value written to this register affects the amount of cleared registers
|
||||
|
@ -437,12 +437,6 @@ namespace EfbInterface
|
||||
{
|
||||
SetPixelAlphaOnly(offset, dstClrPtr[ALP_C]);
|
||||
}
|
||||
|
||||
// branchless bounding box update
|
||||
PixelEngine::bbox[0] = std::min(x, PixelEngine::bbox[0]);
|
||||
PixelEngine::bbox[1] = std::max(x, PixelEngine::bbox[1]);
|
||||
PixelEngine::bbox[2] = std::min(y, PixelEngine::bbox[2]);
|
||||
PixelEngine::bbox[3] = std::max(y, PixelEngine::bbox[3]);
|
||||
}
|
||||
|
||||
void SetColor(u16 x, u16 y, u8 *color)
|
||||
|
@ -14,6 +14,7 @@
|
||||
#include "VideoBackends/Software/SWVideoConfig.h"
|
||||
#include "VideoBackends/Software/Tev.h"
|
||||
#include "VideoBackends/Software/XFMemLoader.h"
|
||||
#include "VideoCommon/BoundingBox.h"
|
||||
|
||||
|
||||
#define BLOCK_SIZE 2
|
||||
@ -130,7 +131,7 @@ inline void Draw(s32 x, s32 y, s32 xi, s32 yi)
|
||||
if (z < 0 || z > 0x00ffffff)
|
||||
return;
|
||||
|
||||
if (bpmem.UseEarlyDepthTest() && g_SWVideoConfig.bZComploc)
|
||||
if (!BoundingBox::active && bpmem.UseEarlyDepthTest() && g_SWVideoConfig.bZComploc)
|
||||
{
|
||||
// TODO: Test if perf regs are incremented even if test is disabled
|
||||
EfbInterface::IncPerfCounterQuadCount(PQ_ZCOMP_INPUT_ZCOMPLOC);
|
||||
@ -317,7 +318,7 @@ void DrawTriangleFrontFace(OutputVertexData *v0, OutputVertexData *v1, OutputVer
|
||||
{
|
||||
INCSTAT(swstats.thisFrame.numTrianglesDrawn);
|
||||
|
||||
if (g_SWVideoConfig.bHwRasterizer)
|
||||
if (g_SWVideoConfig.bHwRasterizer && !BoundingBox::active)
|
||||
{
|
||||
HwRasterizer::DrawTriangleFrontFace(v0, v1, v2);
|
||||
return;
|
||||
@ -414,84 +415,254 @@ void DrawTriangleFrontFace(OutputVertexData *v0, OutputVertexData *v1, OutputVer
|
||||
if (DY23 < 0 || (DY23 == 0 && DX23 > 0)) C2++;
|
||||
if (DY31 < 0 || (DY31 == 0 && DX31 > 0)) C3++;
|
||||
|
||||
// Loop through blocks
|
||||
for (s32 y = miny; y < maxy; y += BLOCK_SIZE)
|
||||
// If drawing, rasterize every block
|
||||
if (!BoundingBox::active)
|
||||
{
|
||||
for (s32 x = minx; x < maxx; x += BLOCK_SIZE)
|
||||
// Loop through blocks
|
||||
for (s32 y = miny; y < maxy; y += BLOCK_SIZE)
|
||||
{
|
||||
// Corners of block
|
||||
s32 x0 = x << 4;
|
||||
s32 x1 = (x + BLOCK_SIZE - 1) << 4;
|
||||
s32 y0 = y << 4;
|
||||
s32 y1 = (y + BLOCK_SIZE - 1) << 4;
|
||||
|
||||
// Evaluate half-space functions
|
||||
bool a00 = C1 + DX12 * y0 - DY12 * x0 > 0;
|
||||
bool a10 = C1 + DX12 * y0 - DY12 * x1 > 0;
|
||||
bool a01 = C1 + DX12 * y1 - DY12 * x0 > 0;
|
||||
bool a11 = C1 + DX12 * y1 - DY12 * x1 > 0;
|
||||
int a = (a00 << 0) | (a10 << 1) | (a01 << 2) | (a11 << 3);
|
||||
|
||||
bool b00 = C2 + DX23 * y0 - DY23 * x0 > 0;
|
||||
bool b10 = C2 + DX23 * y0 - DY23 * x1 > 0;
|
||||
bool b01 = C2 + DX23 * y1 - DY23 * x0 > 0;
|
||||
bool b11 = C2 + DX23 * y1 - DY23 * x1 > 0;
|
||||
int b = (b00 << 0) | (b10 << 1) | (b01 << 2) | (b11 << 3);
|
||||
|
||||
bool c00 = C3 + DX31 * y0 - DY31 * x0 > 0;
|
||||
bool c10 = C3 + DX31 * y0 - DY31 * x1 > 0;
|
||||
bool c01 = C3 + DX31 * y1 - DY31 * x0 > 0;
|
||||
bool c11 = C3 + DX31 * y1 - DY31 * x1 > 0;
|
||||
int c = (c00 << 0) | (c10 << 1) | (c01 << 2) | (c11 << 3);
|
||||
|
||||
// Skip block when outside an edge
|
||||
if (a == 0x0 || b == 0x0 || c == 0x0)
|
||||
continue;
|
||||
|
||||
BuildBlock(x, y);
|
||||
|
||||
// Accept whole block when totally covered
|
||||
if (a == 0xF && b == 0xF && c == 0xF)
|
||||
for (s32 x = minx; x < maxx; x += BLOCK_SIZE)
|
||||
{
|
||||
for (s32 iy = 0; iy < BLOCK_SIZE; iy++)
|
||||
{
|
||||
for (s32 ix = 0; ix < BLOCK_SIZE; ix++)
|
||||
{
|
||||
Draw(x + ix, y + iy, ix, iy);
|
||||
}
|
||||
}
|
||||
}
|
||||
else // Partially covered block
|
||||
{
|
||||
s32 CY1 = C1 + DX12 * y0 - DY12 * x0;
|
||||
s32 CY2 = C2 + DX23 * y0 - DY23 * x0;
|
||||
s32 CY3 = C3 + DX31 * y0 - DY31 * x0;
|
||||
// Corners of block
|
||||
s32 x0 = x << 4;
|
||||
s32 x1 = (x + BLOCK_SIZE - 1) << 4;
|
||||
s32 y0 = y << 4;
|
||||
s32 y1 = (y + BLOCK_SIZE - 1) << 4;
|
||||
|
||||
for (s32 iy = 0; iy < BLOCK_SIZE; iy++)
|
||||
{
|
||||
s32 CX1 = CY1;
|
||||
s32 CX2 = CY2;
|
||||
s32 CX3 = CY3;
|
||||
// Evaluate half-space functions
|
||||
bool a00 = C1 + DX12 * y0 - DY12 * x0 > 0;
|
||||
bool a10 = C1 + DX12 * y0 - DY12 * x1 > 0;
|
||||
bool a01 = C1 + DX12 * y1 - DY12 * x0 > 0;
|
||||
bool a11 = C1 + DX12 * y1 - DY12 * x1 > 0;
|
||||
int a = (a00 << 0) | (a10 << 1) | (a01 << 2) | (a11 << 3);
|
||||
|
||||
for (s32 ix = 0; ix < BLOCK_SIZE; ix++)
|
||||
bool b00 = C2 + DX23 * y0 - DY23 * x0 > 0;
|
||||
bool b10 = C2 + DX23 * y0 - DY23 * x1 > 0;
|
||||
bool b01 = C2 + DX23 * y1 - DY23 * x0 > 0;
|
||||
bool b11 = C2 + DX23 * y1 - DY23 * x1 > 0;
|
||||
int b = (b00 << 0) | (b10 << 1) | (b01 << 2) | (b11 << 3);
|
||||
|
||||
bool c00 = C3 + DX31 * y0 - DY31 * x0 > 0;
|
||||
bool c10 = C3 + DX31 * y0 - DY31 * x1 > 0;
|
||||
bool c01 = C3 + DX31 * y1 - DY31 * x0 > 0;
|
||||
bool c11 = C3 + DX31 * y1 - DY31 * x1 > 0;
|
||||
int c = (c00 << 0) | (c10 << 1) | (c01 << 2) | (c11 << 3);
|
||||
|
||||
// Skip block when outside an edge
|
||||
if (a == 0x0 || b == 0x0 || c == 0x0)
|
||||
continue;
|
||||
|
||||
BuildBlock(x, y);
|
||||
|
||||
// Accept whole block when totally covered
|
||||
if (a == 0xF && b == 0xF && c == 0xF)
|
||||
{
|
||||
for (s32 iy = 0; iy < BLOCK_SIZE; iy++)
|
||||
{
|
||||
if (CX1 > 0 && CX2 > 0 && CX3 > 0)
|
||||
for (s32 ix = 0; ix < BLOCK_SIZE; ix++)
|
||||
{
|
||||
Draw(x + ix, y + iy, ix, iy);
|
||||
}
|
||||
|
||||
CX1 -= FDY12;
|
||||
CX2 -= FDY23;
|
||||
CX3 -= FDY31;
|
||||
}
|
||||
}
|
||||
else // Partially covered block
|
||||
{
|
||||
s32 CY1 = C1 + DX12 * y0 - DY12 * x0;
|
||||
s32 CY2 = C2 + DX23 * y0 - DY23 * x0;
|
||||
s32 CY3 = C3 + DX31 * y0 - DY31 * x0;
|
||||
|
||||
CY1 += FDX12;
|
||||
CY2 += FDX23;
|
||||
CY3 += FDX31;
|
||||
for (s32 iy = 0; iy < BLOCK_SIZE; iy++)
|
||||
{
|
||||
s32 CX1 = CY1;
|
||||
s32 CX2 = CY2;
|
||||
s32 CX3 = CY3;
|
||||
|
||||
for (s32 ix = 0; ix < BLOCK_SIZE; ix++)
|
||||
{
|
||||
if (CX1 > 0 && CX2 > 0 && CX3 > 0)
|
||||
{
|
||||
Draw(x + ix, y + iy, ix, iy);
|
||||
}
|
||||
|
||||
CX1 -= FDY12;
|
||||
CX2 -= FDY23;
|
||||
CX3 -= FDY31;
|
||||
}
|
||||
|
||||
CY1 += FDX12;
|
||||
CY2 += FDX23;
|
||||
CY3 += FDX31;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// If we are only calculating bbox, we only need to find the topmost,
|
||||
// leftmost, bottom most and rightmost pixels to be drawn.
|
||||
// So instead of drawing every single one of the triangle's pixels,
|
||||
// four loops are run: one for the top pixel, one for the left, one for
|
||||
// the bottom and one for the right. As soon as a pixel that is to be
|
||||
// drawn is found, the loop breaks. This enables a ~150% speedbost in
|
||||
// bbox calculation, albeit at the cost of some ugly repetitive code.
|
||||
const s32 FTOP = miny << 4;
|
||||
const s32 FLEFT = minx << 4;
|
||||
const s32 FBOTTOM = maxy << 4;
|
||||
const s32 FRIGHT = maxx << 4;
|
||||
|
||||
// Start checking for bbox top
|
||||
s32 CY1 = C1 + DX12 * FTOP - DY12 * FLEFT;
|
||||
s32 CY2 = C2 + DX23 * FTOP - DY23 * FLEFT;
|
||||
s32 CY3 = C3 + DX31 * FTOP - DY31 * FLEFT;
|
||||
|
||||
// Loop
|
||||
for (s32 y = miny; y <= maxy; ++y)
|
||||
{
|
||||
if (y >= BoundingBox::coords[BoundingBox::TOP])
|
||||
break;
|
||||
|
||||
s32 CX1 = CY1;
|
||||
s32 CX2 = CY2;
|
||||
s32 CX3 = CY3;
|
||||
|
||||
for (s32 x = minx; x <= maxx; ++x)
|
||||
{
|
||||
if (CX1 > 0 && CX2 > 0 && CX3 > 0)
|
||||
{
|
||||
// Build the new raster block every other pixel
|
||||
BuildBlock((x & ~(BLOCK_SIZE - 1)), y & ~(BLOCK_SIZE - 1));
|
||||
|
||||
Draw(x, y, x & 1, y & 1);
|
||||
|
||||
if (y >= BoundingBox::coords[BoundingBox::TOP])
|
||||
break;
|
||||
}
|
||||
|
||||
CX1 -= FDY12;
|
||||
CX2 -= FDY23;
|
||||
CX3 -= FDY31;
|
||||
}
|
||||
|
||||
CY1 += FDX12;
|
||||
CY2 += FDX23;
|
||||
CY3 += FDX31;
|
||||
}
|
||||
|
||||
// Checking for bbox left
|
||||
s32 CX1 = C1 + DX12 * FTOP - DY12 * FLEFT;
|
||||
s32 CX2 = C2 + DX23 * FTOP - DY23 * FLEFT;
|
||||
s32 CX3 = C3 + DX31 * FTOP - DY31 * FLEFT;
|
||||
|
||||
// Loop
|
||||
for (s32 x = minx; x <= maxx; ++x)
|
||||
{
|
||||
if (x >= BoundingBox::coords[BoundingBox::LEFT])
|
||||
break;
|
||||
|
||||
s32 CY1 = CX1;
|
||||
s32 CY2 = CX2;
|
||||
s32 CY3 = CX3;
|
||||
|
||||
for (s32 y = miny; y <= maxy; ++y)
|
||||
{
|
||||
if (CY1 > 0 && CY2 > 0 && CY3 > 0)
|
||||
{
|
||||
// Build the new raster block every other pixel
|
||||
BuildBlock((x & ~(BLOCK_SIZE - 1)), y & ~(BLOCK_SIZE - 1));
|
||||
|
||||
Draw(x, y, x & 1, y & 1);
|
||||
|
||||
if (x >= BoundingBox::coords[BoundingBox::LEFT])
|
||||
break;
|
||||
}
|
||||
|
||||
CY1 += FDX12;
|
||||
CY2 += FDX23;
|
||||
CY3 += FDX31;
|
||||
}
|
||||
|
||||
CX1 -= FDY12;
|
||||
CX2 -= FDY23;
|
||||
CX3 -= FDY31;
|
||||
}
|
||||
|
||||
// Checking for bbox bottom
|
||||
CY1 = C1 + DX12 * FBOTTOM - DY12 * FRIGHT;
|
||||
CY2 = C2 + DX23 * FBOTTOM - DY23 * FRIGHT;
|
||||
CY3 = C3 + DX31 * FBOTTOM - DY31 * FRIGHT;
|
||||
|
||||
// Loop
|
||||
for (s32 y = maxy; y >= miny; --y)
|
||||
{
|
||||
s32 CX1 = CY1;
|
||||
s32 CX2 = CY2;
|
||||
s32 CX3 = CY3;
|
||||
|
||||
if (y <= BoundingBox::coords[BoundingBox::BOTTOM])
|
||||
break;
|
||||
|
||||
for (s32 x = maxx; x >= minx; --x)
|
||||
{
|
||||
if (CX1 > 0 && CX2 > 0 && CX3 > 0)
|
||||
{
|
||||
// Build the new raster block every other pixel
|
||||
BuildBlock((x & ~(BLOCK_SIZE - 1)), y & ~(BLOCK_SIZE - 1));
|
||||
|
||||
Draw(x, y, x & 1, y & 1);
|
||||
|
||||
if (y <= BoundingBox::coords[BoundingBox::BOTTOM])
|
||||
break;
|
||||
}
|
||||
|
||||
CX1 += FDY12;
|
||||
CX2 += FDY23;
|
||||
CX3 += FDY31;
|
||||
}
|
||||
|
||||
CY1 -= FDX12;
|
||||
CY2 -= FDX23;
|
||||
CY3 -= FDX31;
|
||||
}
|
||||
|
||||
// Checking for bbox right
|
||||
CX1 = C1 + DX12 * FBOTTOM - DY12 * FRIGHT;
|
||||
CX2 = C2 + DX23 * FBOTTOM - DY23 * FRIGHT;
|
||||
CX3 = C3 + DX31 * FBOTTOM - DY31 * FRIGHT;
|
||||
|
||||
// Loop
|
||||
for (s32 x = maxx; x >= minx; --x)
|
||||
{
|
||||
if (x <= BoundingBox::coords[BoundingBox::RIGHT])
|
||||
break;
|
||||
|
||||
s32 CY1 = CX1;
|
||||
s32 CY2 = CX2;
|
||||
s32 CY3 = CX3;
|
||||
|
||||
for (s32 y = maxy; y >= miny; --y)
|
||||
{
|
||||
if (CY1 > 0 && CY2 > 0 && CY3 > 0)
|
||||
{
|
||||
// Build the new raster block every other pixel
|
||||
BuildBlock((x & ~(BLOCK_SIZE - 1)), y & ~(BLOCK_SIZE - 1));
|
||||
|
||||
Draw(x, y, x & 1, y & 1);
|
||||
|
||||
if (x <= BoundingBox::coords[BoundingBox::RIGHT])
|
||||
break;
|
||||
}
|
||||
|
||||
CY1 -= FDX12;
|
||||
CY2 -= FDX23;
|
||||
CY3 -= FDX31;
|
||||
}
|
||||
|
||||
CX1 += FDY12;
|
||||
CX2 += FDY23;
|
||||
CX3 += FDY31;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
@ -13,6 +13,7 @@
|
||||
#include "VideoBackends/Software/Tev.h"
|
||||
#include "VideoBackends/Software/TextureSampler.h"
|
||||
#include "VideoBackends/Software/XFMemLoader.h"
|
||||
#include "VideoCommon/BoundingBox.h"
|
||||
|
||||
#ifdef _DEBUG
|
||||
#define ALLOW_TEV_DUMPS 1
|
||||
@ -157,7 +158,7 @@ void Tev::SetRasColor(int colorChan, int swaptable)
|
||||
RasColor[ALP_C] = color[bpmem.tevksel[swaptable].swap2];
|
||||
}
|
||||
break;
|
||||
case 5: // alpha bump
|
||||
case 5: // alpha bump
|
||||
{
|
||||
for (s16& comp : RasColor)
|
||||
{
|
||||
@ -649,121 +650,138 @@ void Tev::Draw()
|
||||
if (!TevAlphaTest(output[ALP_C]))
|
||||
return;
|
||||
|
||||
// z texture
|
||||
if (bpmem.ztex2.op)
|
||||
// This part is only needed if we are not simply computing bbox
|
||||
// (i. e., only needed when using the SW renderer)
|
||||
if (!BoundingBox::active)
|
||||
{
|
||||
u32 ztex = bpmem.ztex1.bias;
|
||||
switch (bpmem.ztex2.type)
|
||||
// z texture
|
||||
if (bpmem.ztex2.op)
|
||||
{
|
||||
case 0: // 8 bit
|
||||
ztex += TexColor[ALP_C];
|
||||
break;
|
||||
case 1: // 16 bit
|
||||
ztex += TexColor[ALP_C] << 8 | TexColor[RED_C];
|
||||
break;
|
||||
case 2: // 24 bit
|
||||
ztex += TexColor[RED_C] << 16 | TexColor[GRN_C] << 8 | TexColor[BLU_C];
|
||||
break;
|
||||
u32 ztex = bpmem.ztex1.bias;
|
||||
switch (bpmem.ztex2.type)
|
||||
{
|
||||
case 0: // 8 bit
|
||||
ztex += TexColor[ALP_C];
|
||||
break;
|
||||
case 1: // 16 bit
|
||||
ztex += TexColor[ALP_C] << 8 | TexColor[RED_C];
|
||||
break;
|
||||
case 2: // 24 bit
|
||||
ztex += TexColor[RED_C] << 16 | TexColor[GRN_C] << 8 | TexColor[BLU_C];
|
||||
break;
|
||||
}
|
||||
|
||||
if (bpmem.ztex2.op == ZTEXTURE_ADD)
|
||||
ztex += Position[2];
|
||||
|
||||
Position[2] = ztex & 0x00ffffff;
|
||||
}
|
||||
|
||||
if (bpmem.ztex2.op == ZTEXTURE_ADD)
|
||||
ztex += Position[2];
|
||||
// fog
|
||||
if (bpmem.fog.c_proj_fsel.fsel)
|
||||
{
|
||||
float ze;
|
||||
|
||||
Position[2] = ztex & 0x00ffffff;
|
||||
if (bpmem.fog.c_proj_fsel.proj == 0)
|
||||
{
|
||||
// perspective
|
||||
// ze = A/(B - (Zs >> B_SHF))
|
||||
s32 denom = bpmem.fog.b_magnitude - (Position[2] >> bpmem.fog.b_shift);
|
||||
//in addition downscale magnitude and zs to 0.24 bits
|
||||
ze = (bpmem.fog.a.GetA() * 16777215.0f) / (float)denom;
|
||||
}
|
||||
else
|
||||
{
|
||||
// orthographic
|
||||
// ze = a*Zs
|
||||
//in addition downscale zs to 0.24 bits
|
||||
ze = bpmem.fog.a.GetA() * ((float)Position[2] / 16777215.0f);
|
||||
|
||||
}
|
||||
|
||||
if (bpmem.fogRange.Base.Enabled)
|
||||
{
|
||||
// TODO: This is untested and should definitely be checked against real hw.
|
||||
// - No idea if offset is really normalized against the viewport width or against the projection matrix or yet something else
|
||||
// - scaling of the "k" coefficient isn't clear either.
|
||||
|
||||
// First, calculate the offset from the viewport center (normalized to 0..1)
|
||||
float offset = (Position[0] - (bpmem.fogRange.Base.Center - 342)) / (float)xfmem.viewport.wd;
|
||||
|
||||
// Based on that, choose the index such that points which are far away from the z-axis use the 10th "k" value and such that central points use the first value.
|
||||
float floatindex = 9.f - std::abs(offset) * 9.f;
|
||||
floatindex = (floatindex < 0.f) ? 0.f : (floatindex > 9.f) ? 9.f : floatindex; // TODO: This shouldn't be necessary!
|
||||
|
||||
// Get the two closest integer indices, look up the corresponding samples
|
||||
int indexlower = (int)floor(floatindex);
|
||||
int indexupper = indexlower + 1;
|
||||
// Look up coefficient... Seems like multiplying by 4 makes Fortune Street work properly (fog is too strong without the factor)
|
||||
float klower = bpmem.fogRange.K[indexlower/2].GetValue(indexlower%2) * 4.f;
|
||||
float kupper = bpmem.fogRange.K[indexupper/2].GetValue(indexupper%2) * 4.f;
|
||||
|
||||
// linearly interpolate the samples and multiple ze by the resulting adjustment factor
|
||||
float factor = indexupper - floatindex;
|
||||
float k = klower * factor + kupper * (1.f - factor);
|
||||
float x_adjust = sqrt(offset*offset + k*k)/k;
|
||||
ze *= x_adjust; // NOTE: This is basically dividing by a cosine (hidden behind GXInitFogAdjTable): 1/cos = c/b = sqrt(a^2+b^2)/b
|
||||
}
|
||||
|
||||
ze -= bpmem.fog.c_proj_fsel.GetC();
|
||||
|
||||
// clamp 0 to 1
|
||||
float fog = (ze<0.0f) ? 0.0f : ((ze>1.0f) ? 1.0f : ze);
|
||||
|
||||
switch (bpmem.fog.c_proj_fsel.fsel)
|
||||
{
|
||||
case 4: // exp
|
||||
fog = 1.0f - pow(2.0f, -8.0f * fog);
|
||||
break;
|
||||
case 5: // exp2
|
||||
fog = 1.0f - pow(2.0f, -8.0f * fog * fog);
|
||||
break;
|
||||
case 6: // backward exp
|
||||
fog = 1.0f - fog;
|
||||
fog = pow(2.0f, -8.0f * fog);
|
||||
break;
|
||||
case 7: // backward exp2
|
||||
fog = 1.0f - fog;
|
||||
fog = pow(2.0f, -8.0f * fog * fog);
|
||||
break;
|
||||
}
|
||||
|
||||
// lerp from output to fog color
|
||||
u32 fogInt = (u32)(fog * 256);
|
||||
u32 invFog = 256 - fogInt;
|
||||
|
||||
output[RED_C] = (output[RED_C] * invFog + fogInt * bpmem.fog.color.r) >> 8;
|
||||
output[GRN_C] = (output[GRN_C] * invFog + fogInt * bpmem.fog.color.g) >> 8;
|
||||
output[BLU_C] = (output[BLU_C] * invFog + fogInt * bpmem.fog.color.b) >> 8;
|
||||
}
|
||||
|
||||
bool late_ztest = !bpmem.zcontrol.early_ztest || !g_SWVideoConfig.bZComploc;
|
||||
if (late_ztest && bpmem.zmode.testenable)
|
||||
{
|
||||
// TODO: Check against hw if these values get incremented even if depth testing is disabled
|
||||
EfbInterface::IncPerfCounterQuadCount(PQ_ZCOMP_INPUT);
|
||||
|
||||
if (!EfbInterface::ZCompare(Position[0], Position[1], Position[2]))
|
||||
return;
|
||||
|
||||
EfbInterface::IncPerfCounterQuadCount(PQ_ZCOMP_OUTPUT);
|
||||
}
|
||||
}
|
||||
|
||||
// fog
|
||||
if (bpmem.fog.c_proj_fsel.fsel)
|
||||
{
|
||||
float ze;
|
||||
// branchless bounding box update
|
||||
BoundingBox::coords[BoundingBox::LEFT] = std::min((u16)Position[0], BoundingBox::coords[BoundingBox::LEFT]);
|
||||
BoundingBox::coords[BoundingBox::RIGHT] = std::max((u16)Position[0], BoundingBox::coords[BoundingBox::RIGHT]);
|
||||
BoundingBox::coords[BoundingBox::TOP] = std::min((u16)Position[1], BoundingBox::coords[BoundingBox::TOP]);
|
||||
BoundingBox::coords[BoundingBox::BOTTOM] = std::max((u16)Position[1], BoundingBox::coords[BoundingBox::BOTTOM]);
|
||||
|
||||
if (bpmem.fog.c_proj_fsel.proj == 0)
|
||||
{
|
||||
// perspective
|
||||
// ze = A/(B - (Zs >> B_SHF))
|
||||
s32 denom = bpmem.fog.b_magnitude - (Position[2] >> bpmem.fog.b_shift);
|
||||
//in addition downscale magnitude and zs to 0.24 bits
|
||||
ze = (bpmem.fog.a.GetA() * 16777215.0f) / (float)denom;
|
||||
}
|
||||
else
|
||||
{
|
||||
// orthographic
|
||||
// ze = a*Zs
|
||||
//in addition downscale zs to 0.24 bits
|
||||
ze = bpmem.fog.a.GetA() * ((float)Position[2] / 16777215.0f);
|
||||
// if we are only calculating the bounding box,
|
||||
// there's no need to actually draw anything
|
||||
if (BoundingBox::active)
|
||||
return;
|
||||
|
||||
}
|
||||
|
||||
if (bpmem.fogRange.Base.Enabled)
|
||||
{
|
||||
// TODO: This is untested and should definitely be checked against real hw.
|
||||
// - No idea if offset is really normalized against the viewport width or against the projection matrix or yet something else
|
||||
// - scaling of the "k" coefficient isn't clear either.
|
||||
|
||||
// First, calculate the offset from the viewport center (normalized to 0..1)
|
||||
float offset = (Position[0] - (bpmem.fogRange.Base.Center - 342)) / (float)xfmem.viewport.wd;
|
||||
|
||||
// Based on that, choose the index such that points which are far away from the z-axis use the 10th "k" value and such that central points use the first value.
|
||||
float floatindex = 9.f - std::abs(offset) * 9.f;
|
||||
floatindex = (floatindex < 0.f) ? 0.f : (floatindex > 9.f) ? 9.f : floatindex; // TODO: This shouldn't be necessary!
|
||||
|
||||
// Get the two closest integer indices, look up the corresponding samples
|
||||
int indexlower = (int)floor(floatindex);
|
||||
int indexupper = indexlower + 1;
|
||||
// Look up coefficient... Seems like multiplying by 4 makes Fortune Street work properly (fog is too strong without the factor)
|
||||
float klower = bpmem.fogRange.K[indexlower/2].GetValue(indexlower%2) * 4.f;
|
||||
float kupper = bpmem.fogRange.K[indexupper/2].GetValue(indexupper%2) * 4.f;
|
||||
|
||||
// linearly interpolate the samples and multiple ze by the resulting adjustment factor
|
||||
float factor = indexupper - floatindex;
|
||||
float k = klower * factor + kupper * (1.f - factor);
|
||||
float x_adjust = sqrt(offset*offset + k*k)/k;
|
||||
ze *= x_adjust; // NOTE: This is basically dividing by a cosine (hidden behind GXInitFogAdjTable): 1/cos = c/b = sqrt(a^2+b^2)/b
|
||||
}
|
||||
|
||||
ze -= bpmem.fog.c_proj_fsel.GetC();
|
||||
|
||||
// clamp 0 to 1
|
||||
float fog = (ze<0.0f) ? 0.0f : ((ze>1.0f) ? 1.0f : ze);
|
||||
|
||||
switch (bpmem.fog.c_proj_fsel.fsel)
|
||||
{
|
||||
case 4: // exp
|
||||
fog = 1.0f - pow(2.0f, -8.0f * fog);
|
||||
break;
|
||||
case 5: // exp2
|
||||
fog = 1.0f - pow(2.0f, -8.0f * fog * fog);
|
||||
break;
|
||||
case 6: // backward exp
|
||||
fog = 1.0f - fog;
|
||||
fog = pow(2.0f, -8.0f * fog);
|
||||
break;
|
||||
case 7: // backward exp2
|
||||
fog = 1.0f - fog;
|
||||
fog = pow(2.0f, -8.0f * fog * fog);
|
||||
break;
|
||||
}
|
||||
|
||||
// lerp from output to fog color
|
||||
u32 fogInt = (u32)(fog * 256);
|
||||
u32 invFog = 256 - fogInt;
|
||||
|
||||
output[RED_C] = (output[RED_C] * invFog + fogInt * bpmem.fog.color.r) >> 8;
|
||||
output[GRN_C] = (output[GRN_C] * invFog + fogInt * bpmem.fog.color.g) >> 8;
|
||||
output[BLU_C] = (output[BLU_C] * invFog + fogInt * bpmem.fog.color.b) >> 8;
|
||||
}
|
||||
|
||||
bool late_ztest = !bpmem.zcontrol.early_ztest || !g_SWVideoConfig.bZComploc;
|
||||
if (late_ztest && bpmem.zmode.testenable)
|
||||
{
|
||||
// TODO: Check against hw if these values get incremented even if depth testing is disabled
|
||||
EfbInterface::IncPerfCounterQuadCount(PQ_ZCOMP_INPUT);
|
||||
|
||||
if (!EfbInterface::ZCompare(Position[0], Position[1], Position[2]))
|
||||
return;
|
||||
|
||||
EfbInterface::IncPerfCounterQuadCount(PQ_ZCOMP_OUTPUT);
|
||||
}
|
||||
|
||||
#if ALLOW_TEV_DUMPS
|
||||
if (g_SWVideoConfig.bDumpTevStages)
|
||||
|
Reference in New Issue
Block a user