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Texture coordinates are stored in fixed point format in TEV which allows overflows to be emulated correctly. Added logic to calculated texture LOD and use the correct mip. Dumping textures will now dump all mip levels. Added line rendering. Changed data stored in vertex from float arrays to vectors for cleaner math.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5178 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
donkopunchstania
2010-03-09 04:38:07 +00:00
parent 5beb6dfd47
commit cc7c6cd35f
16 changed files with 704 additions and 323 deletions
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211
Source/Plugins/Plugin_VideoSoftware/Src/Rasterizer.cpp
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@ -27,8 +27,20 @@
#include "VideoConfig.h"
#define BLOCK_SIZE 8
#define BLOCK_SIZE 2
#define CLAMP(x, a, b) (x>b)?b:(x<a)?a:x
// returns approximation of log2(f) in s28.4
// results are close enough to use for LOD
static inline s32 FixedLog2(float f)
{
u32 *x = (u32*)&f;
s32 logInt = ((*x & 0x7F800000) >> 19) - 2032; // integer part
s32 logFract = (*x & 0x007fffff) >> 19; // approximate fractional part
return logInt + logFract;
}
namespace Rasterizer
{
@ -43,6 +55,7 @@ s32 scissorRight = 0;
s32 scissorBottom = 0;
Tev tev;
RasterBlock rasterBlock;
void Init()
{
@ -91,53 +104,58 @@ void SetTevReg(int reg, int comp, bool konst, s16 color)
tev.SetRegColor(reg, comp, konst, color);
}
inline void Draw(s32 x, s32 y)
inline void Draw(s32 x, s32 y, s32 xi, s32 yi)
{
INCSTAT(stats.thisFrame.rasterizedPixels);
float zFloat = 1.0f + ZSlope.GetValue(x, y);
if(zFloat < 0|| zFloat > 1)
return;
float zFloat = 1.0f + ZSlope.GetValue(x, y);
if (zFloat < 0.0f || zFloat > 1.0f)
return;
u32 z = (u32)(zFloat * 0x00ffffff);
s32 z = (s32)(zFloat * 0x00ffffff);
if (bpmem.zcontrol.zcomploc && bpmem.zmode.testenable)
{
// early z
if (!EfbInterface::ZCompare(x, y, z))
return;
}
if (bpmem.zcontrol.zcomploc && bpmem.zmode.testenable)
{
// early z
if (!EfbInterface::ZCompare(x, y, z))
return;
}
float invW = 1.0f / WSlope.GetValue(x, y);
RasterBlockPixel& pixel = rasterBlock.Pixel[xi][yi];
tev.Position[0] = x;
tev.Position[1] = y;
tev.Position[2] = z;
float invW = pixel.InvW;
for(unsigned int i = 0; i < bpmem.genMode.numcolchans; i++)
{
for(int comp = 0; comp < 4; comp++)
tev.Color[i][comp] = (u8)ColorSlopes[i][comp].GetValue(x, y);
}
tev.Position[0] = x;
tev.Position[1] = y;
tev.Position[2] = z;
for(unsigned int i = 0; i < bpmem.genMode.numtexgens; i++)
{
if (xfregs.texMtxInfo[i].projection)
{
float q = TexSlopes[i][2].GetValue(x, y) * invW;
float invQ = invW / q;
tev.Uv[i][0] = TexSlopes[i][0].GetValue(x, y) * invQ * (bpmem.texcoords[i].s.scale_minus_1 + 1);
tev.Uv[i][1] = TexSlopes[i][1].GetValue(x, y) * invQ * (bpmem.texcoords[i].t.scale_minus_1 + 1);
tev.Lod[i] = 0;
}
else
{
tev.Uv[i][0] = TexSlopes[i][0].GetValue(x, y) * invW * (bpmem.texcoords[i].s.scale_minus_1 + 1);
tev.Uv[i][1] = TexSlopes[i][1].GetValue(x, y) * invW * (bpmem.texcoords[i].t.scale_minus_1 + 1);
tev.Lod[i] = 0;
}
}
// colors
for (unsigned int i = 0; i < bpmem.genMode.numcolchans; i++)
{
for(int comp = 0; comp < 4; comp++)
tev.Color[i][comp] = (u8)ColorSlopes[i][comp].GetValue(x, y);
}
// tex coords
for (unsigned int i = 0; i < bpmem.genMode.numtexgens; i++)
{
// multiply by 128 because TEV stores stores UVs as s17.7
tev.Uv[i].s = (s32)(pixel.Uv[i][0] * 128);
tev.Uv[i].t = (s32)(pixel.Uv[i][1] * 128);
}
for (unsigned int i = 0; i < bpmem.genMode.numindstages; i++)
{
tev.IndirectLod[i] = rasterBlock.IndirectLod[i];
tev.IndirectLinear[i] = rasterBlock.IndirectLinear[i];
}
for (unsigned int i = 0; i <= bpmem.genMode.numtevstages; i++)
{
tev.TextureLod[i] = rasterBlock.TextureLod[i];
tev.TextureLinear[i] = rasterBlock.TextureLinear[i];
}
tev.Draw();
}
@ -155,6 +173,109 @@ void InitSlope(Slope *slope, float f1, float f2, float f3, float DX31, float DX1
slope->y0 = Y1;
}
inline void CalculateLOD(s32 &lod, bool &linear, u32 texmap, u32 texcoord)
{
FourTexUnits& texUnit = bpmem.tex[(texmap >> 2) & 1];
u8 subTexmap = texmap & 3;
// LOD calculation requires data from the texture mode for bias, etc.
// it does not seem to use the actual texture size
TexMode0& tm0 = texUnit.texMode0[subTexmap];
TexMode1& tm1 = texUnit.texMode1[subTexmap];
float sDelta, tDelta;
if (tm0.diag_lod)
{
float *uv0 = rasterBlock.Pixel[0][0].Uv[texcoord];
float *uv1 = rasterBlock.Pixel[1][1].Uv[texcoord];
sDelta = abs(uv0[0] - uv1[0]);
tDelta = abs(uv0[1] - uv1[1]);
}
else
{
float *uv0 = rasterBlock.Pixel[0][0].Uv[texcoord];
float *uv1 = rasterBlock.Pixel[1][0].Uv[texcoord];
float *uv2 = rasterBlock.Pixel[0][1].Uv[texcoord];
sDelta = max(abs(uv0[0] - uv1[0]), abs(uv0[0] - uv2[0]));
tDelta = max(abs(uv0[1] - uv1[1]), abs(uv0[1] - uv2[1]));
}
// get LOD in s28.4
lod = FixedLog2(max(sDelta, tDelta));
// bias is s2.5
int bias = tm0.lod_bias;
bias >>= 1;
lod += bias;
linear = (lod >= 0 && (tm0.min_filter & 4) || lod < 0 && tm0.mag_filter);
// order of checks matters
// should be:
// if lod > max then max
// else if lod < min then min
lod = CLAMP(lod, (s32)tm1.min_lod, (s32)tm1.max_lod);
}
void BuildBlock(s32 blockX, s32 blockY)
{
for (s32 yi = 0; yi < BLOCK_SIZE; yi++)
{
for (s32 xi = 0; xi < BLOCK_SIZE; xi++)
{
RasterBlockPixel& pixel = rasterBlock.Pixel[xi][yi];
s32 x = xi + blockX;
s32 y = yi + blockY;
float invW = 1.0f / WSlope.GetValue(x, y);
pixel.InvW = invW;
// tex coords
for (unsigned int i = 0; i < bpmem.genMode.numtexgens; i++)
{
float projection;
if (xfregs.texMtxInfo[i].projection)
{
float q = TexSlopes[i][2].GetValue(x, y) * invW;
projection = invW / q;
}
else
projection = invW;
pixel.Uv[i][0] = TexSlopes[i][0].GetValue(x, y) * projection;
pixel.Uv[i][1] = TexSlopes[i][1].GetValue(x, y) * projection;
}
}
}
u32 indref = bpmem.tevindref.hex;
for (unsigned int i = 0; i < bpmem.genMode.numindstages; i++)
{
u32 texmap = indref & 3;
indref >>= 3;
u32 texcoord = indref & 3;
indref >>= 3;
CalculateLOD(rasterBlock.IndirectLod[i], rasterBlock.IndirectLinear[i], texmap, texcoord);
}
for (unsigned int i = 0; i <= bpmem.genMode.numtevstages; i++)
{
int stageOdd = i&1;
TwoTevStageOrders &order = bpmem.tevorders[i >> 1];
if(order.getEnable(stageOdd))
{
u32 texmap = order.getTexMap(stageOdd);
u32 texcoord = order.getTexCoord(stageOdd);
CalculateLOD(rasterBlock.TextureLod[i], rasterBlock.TextureLinear[i], texmap, texcoord);
}
}
}
void DrawTriangleFrontFace(OutputVertexData *v0, OutputVertexData *v1, OutputVertexData *v2)
{
INCSTAT(stats.thisFrame.numTrianglesDrawn);
@ -217,7 +338,7 @@ void DrawTriangleFrontFace(OutputVertexData *v0, OutputVertexData *v1, OutputVer
float fltdy12 = flty1 - v1->screenPosition[1];
float fltdy31 = v2->screenPosition[1] - flty1;
float w[3] = { 1.0f / v0->projectedPosition[3], 1.0f / v1->projectedPosition[3], 1.0f / v2->projectedPosition[3] };
float w[3] = { 1.0f / v0->projectedPosition.w, 1.0f / v1->projectedPosition.w, 1.0f / v2->projectedPosition.w };
InitSlope(&WSlope, w[0], w[1], w[2], fltdx31, fltdx12, fltdy12, fltdy31, fltx1, flty1);
InitSlope(&ZSlope, v0->screenPosition[2], v1->screenPosition[2], v2->screenPosition[2], fltdx31, fltdx12, fltdy12, fltdy31, fltx1, flty1);
@ -281,14 +402,16 @@ void DrawTriangleFrontFace(OutputVertexData *v0, OutputVertexData *v1, OutputVer
// 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++)
{
for(s32 ix = x; ix < x + BLOCK_SIZE; ix++)
for(s32 ix = 0; ix < BLOCK_SIZE; ix++)
{
Draw(ix, iy + y);
Draw(x + ix, y + iy, ix, iy);
}
}
}
@ -298,17 +421,17 @@ void DrawTriangleFrontFace(OutputVertexData *v0, OutputVertexData *v1, OutputVer
s32 CY2 = C2 + DX23 * y0 - DY23 * x0;
s32 CY3 = C3 + DX31 * y0 - DY31 * x0;
for(s32 iy = y; iy < y + BLOCK_SIZE; iy++)
for(s32 iy = 0; iy < BLOCK_SIZE; iy++)
{
s32 CX1 = CY1;
s32 CX2 = CY2;
s32 CX3 = CY3;
for(s32 ix = x; ix < x + BLOCK_SIZE; ix++)
for(s32 ix = 0; ix < BLOCK_SIZE; ix++)
{
if(CX1 > 0 && CX2 > 0 && CX3 > 0)
{
Draw(ix, iy);
Draw(x + ix, y + iy, ix, iy);
}
CX1 -= FDY12;