forked from dolphin-emu/dolphin
517 lines
14 KiB
C++
517 lines
14 KiB
C++
// Copyright 2013 Dolphin Emulator Project
|
|
// Licensed under GPLv2
|
|
// Refer to the license.txt file included.
|
|
|
|
#include <algorithm>
|
|
#include <cmath>
|
|
|
|
#include "Common/Common.h"
|
|
#include "Common/MathUtil.h"
|
|
|
|
#include "VideoBackends/Software/BPMemLoader.h"
|
|
#include "VideoBackends/Software/CPMemLoader.h"
|
|
#include "VideoBackends/Software/NativeVertexFormat.h"
|
|
#include "VideoBackends/Software/TransformUnit.h"
|
|
#include "VideoBackends/Software/Vec3.h"
|
|
#include "VideoBackends/Software/XFMemLoader.h"
|
|
|
|
|
|
namespace TransformUnit
|
|
{
|
|
|
|
static void MultiplyVec2Mat24(const Vec3 &vec, const float *mat, Vec3 &result)
|
|
{
|
|
result.x = mat[0] * vec.x + mat[1] * vec.y + mat[2] + mat[3];
|
|
result.y = mat[4] * vec.x + mat[5] * vec.y + mat[6] + mat[7];
|
|
result.z = 1.0f;
|
|
}
|
|
|
|
static void MultiplyVec2Mat34(const Vec3 &vec, const float *mat, Vec3 &result)
|
|
{
|
|
result.x = mat[0] * vec.x + mat[1] * vec.y + mat[2] + mat[3];
|
|
result.y = mat[4] * vec.x + mat[5] * vec.y + mat[6] + mat[7];
|
|
result.z = mat[8] * vec.x + mat[9] * vec.y + mat[10] + mat[11];
|
|
}
|
|
|
|
static void MultiplyVec3Mat33(const Vec3 &vec, const float *mat, Vec3 &result)
|
|
{
|
|
result.x = mat[0] * vec.x + mat[1] * vec.y + mat[2] * vec.z;
|
|
result.y = mat[3] * vec.x + mat[4] * vec.y + mat[5] * vec.z;
|
|
result.z = mat[6] * vec.x + mat[7] * vec.y + mat[8] * vec.z;
|
|
}
|
|
|
|
static void MultiplyVec3Mat24(const Vec3 &vec, const float *mat, Vec3 &result)
|
|
{
|
|
result.x = mat[0] * vec.x + mat[1] * vec.y + mat[2] * vec.z + mat[3];
|
|
result.y = mat[4] * vec.x + mat[5] * vec.y + mat[6] * vec.z + mat[7];
|
|
result.z = 1.0f;
|
|
}
|
|
|
|
static void MultiplyVec3Mat34(const Vec3 &vec, const float *mat, Vec3 &result)
|
|
{
|
|
result.x = mat[0] * vec.x + mat[1] * vec.y + mat[2] * vec.z + mat[3];
|
|
result.y = mat[4] * vec.x + mat[5] * vec.y + mat[6] * vec.z + mat[7];
|
|
result.z = mat[8] * vec.x + mat[9] * vec.y + mat[10] * vec.z + mat[11];
|
|
}
|
|
|
|
static void MultipleVec3Perspective(const Vec3 &vec, const float *proj, Vec4 &result)
|
|
{
|
|
result.x = proj[0] * vec.x + proj[1] * vec.z;
|
|
result.y = proj[2] * vec.y + proj[3] * vec.z;
|
|
//result.z = (proj[4] * vec.z + proj[5]);
|
|
result.z = (proj[4] * vec.z + proj[5]) * (1.0f - (float)1e-7);
|
|
result.w = -vec.z;
|
|
}
|
|
|
|
static void MultipleVec3Ortho(const Vec3 &vec, const float *proj, Vec4 &result)
|
|
{
|
|
result.x = proj[0] * vec.x + proj[1];
|
|
result.y = proj[2] * vec.y + proj[3];
|
|
result.z = proj[4] * vec.z + proj[5];
|
|
result.w = 1;
|
|
}
|
|
|
|
void TransformPosition(const InputVertexData *src, OutputVertexData *dst)
|
|
{
|
|
const float* mat = (const float*)&xfmem.posMatrices[src->posMtx * 4];
|
|
MultiplyVec3Mat34(src->position, mat, dst->mvPosition);
|
|
|
|
if (xfmem.projection.type == GX_PERSPECTIVE)
|
|
{
|
|
MultipleVec3Perspective(dst->mvPosition, xfmem.projection.rawProjection, dst->projectedPosition);
|
|
}
|
|
else
|
|
{
|
|
MultipleVec3Ortho(dst->mvPosition, xfmem.projection.rawProjection, dst->projectedPosition);
|
|
}
|
|
}
|
|
|
|
void TransformNormal(const InputVertexData *src, bool nbt, OutputVertexData *dst)
|
|
{
|
|
const float* mat = (const float*)&xfmem.normalMatrices[(src->posMtx & 31) * 3];
|
|
|
|
if (nbt)
|
|
{
|
|
MultiplyVec3Mat33(src->normal[0], mat, dst->normal[0]);
|
|
MultiplyVec3Mat33(src->normal[1], mat, dst->normal[1]);
|
|
MultiplyVec3Mat33(src->normal[2], mat, dst->normal[2]);
|
|
dst->normal[0].Normalize();
|
|
}
|
|
else
|
|
{
|
|
MultiplyVec3Mat33(src->normal[0], mat, dst->normal[0]);
|
|
dst->normal[0].Normalize();
|
|
}
|
|
}
|
|
|
|
static void TransformTexCoordRegular(const TexMtxInfo &texinfo, int coordNum, bool specialCase, const InputVertexData *srcVertex, OutputVertexData *dstVertex)
|
|
{
|
|
const Vec3 *src;
|
|
switch (texinfo.sourcerow)
|
|
{
|
|
case XF_SRCGEOM_INROW:
|
|
src = &srcVertex->position;
|
|
break;
|
|
case XF_SRCNORMAL_INROW:
|
|
src = &srcVertex->normal[0];
|
|
break;
|
|
case XF_SRCBINORMAL_T_INROW:
|
|
src = &srcVertex->normal[1];
|
|
break;
|
|
case XF_SRCBINORMAL_B_INROW:
|
|
src = &srcVertex->normal[2];
|
|
break;
|
|
default:
|
|
_assert_(texinfo.sourcerow >= XF_SRCTEX0_INROW && texinfo.sourcerow <= XF_SRCTEX7_INROW);
|
|
src = (Vec3*)srcVertex->texCoords[texinfo.sourcerow - XF_SRCTEX0_INROW];
|
|
break;
|
|
}
|
|
|
|
const float *mat = (const float*)&xfmem.posMatrices[srcVertex->texMtx[coordNum] * 4];
|
|
Vec3 *dst = &dstVertex->texCoords[coordNum];
|
|
|
|
if (texinfo.projection == XF_TEXPROJ_ST)
|
|
{
|
|
if (texinfo.inputform == XF_TEXINPUT_AB11 || specialCase)
|
|
MultiplyVec2Mat24(*src, mat, *dst);
|
|
else
|
|
MultiplyVec3Mat24(*src, mat, *dst);
|
|
}
|
|
else // texinfo.projection == XF_TEXPROJ_STQ
|
|
{
|
|
_assert_(!specialCase);
|
|
|
|
if (texinfo.inputform == XF_TEXINPUT_AB11)
|
|
MultiplyVec2Mat34(*src, mat, *dst);
|
|
else
|
|
MultiplyVec3Mat34(*src, mat, *dst);
|
|
}
|
|
|
|
if (xfmem.dualTexTrans.enabled)
|
|
{
|
|
Vec3 tempCoord;
|
|
|
|
// normalize
|
|
const PostMtxInfo &postInfo = xfmem.postMtxInfo[coordNum];
|
|
const float *postMat = (const float*)&xfmem.postMatrices[postInfo.index * 4];
|
|
|
|
if (specialCase)
|
|
{
|
|
// no normalization
|
|
// q of input is 1
|
|
// q of output is unknown
|
|
tempCoord.x = dst->x;
|
|
tempCoord.y = dst->y;
|
|
|
|
dst->x = postMat[0] * tempCoord.x + postMat[1] * tempCoord.y + postMat[2] + postMat[3];
|
|
dst->y = postMat[4] * tempCoord.x + postMat[5] * tempCoord.y + postMat[6] + postMat[7];
|
|
dst->z = 1.0f;
|
|
}
|
|
else
|
|
{
|
|
if (postInfo.normalize)
|
|
tempCoord = dst->Normalized();
|
|
else
|
|
tempCoord = *dst;
|
|
|
|
MultiplyVec3Mat34(tempCoord, postMat, *dst);
|
|
}
|
|
}
|
|
}
|
|
|
|
struct LightPointer
|
|
{
|
|
u32 reserved[3];
|
|
u8 color[4];
|
|
Vec3 cosatt;
|
|
Vec3 distatt;
|
|
Vec3 pos;
|
|
Vec3 dir;
|
|
};
|
|
|
|
static inline void AddIntegerColor(const u8 *src, Vec3 &dst)
|
|
{
|
|
dst.x += src[1];
|
|
dst.y += src[2];
|
|
dst.z += src[3];
|
|
}
|
|
|
|
static inline void AddScaledIntegerColor(const u8 *src, float scale, Vec3 &dst)
|
|
{
|
|
dst.x += src[1] * scale;
|
|
dst.y += src[2] * scale;
|
|
dst.z += src[3] * scale;
|
|
}
|
|
|
|
static inline float SafeDivide(float n, float d)
|
|
{
|
|
return (d==0) ? (n>0?1:0) : n/d;
|
|
}
|
|
|
|
static void LightColor(const Vec3 &pos, const Vec3 &normal, u8 lightNum, const LitChannel &chan, Vec3 &lightCol)
|
|
{
|
|
const LightPointer *light = (const LightPointer*)&xfmem.lights[lightNum];
|
|
|
|
if (!(chan.attnfunc & 1))
|
|
{
|
|
// atten disabled
|
|
switch (chan.diffusefunc)
|
|
{
|
|
case LIGHTDIF_NONE:
|
|
AddIntegerColor(light->color, lightCol);
|
|
break;
|
|
case LIGHTDIF_SIGN:
|
|
{
|
|
Vec3 ldir = (light->pos - pos).Normalized();
|
|
float diffuse = ldir * normal;
|
|
AddScaledIntegerColor(light->color, diffuse, lightCol);
|
|
}
|
|
break;
|
|
case LIGHTDIF_CLAMP:
|
|
{
|
|
Vec3 ldir = (light->pos - pos).Normalized();
|
|
float diffuse = std::max(0.0f, ldir * normal);
|
|
AddScaledIntegerColor(light->color, diffuse, lightCol);
|
|
}
|
|
break;
|
|
default: _assert_(0);
|
|
}
|
|
}
|
|
else // spec and spot
|
|
{
|
|
// not sure about divide by zero checks
|
|
Vec3 ldir = light->pos - pos;
|
|
float attn;
|
|
|
|
if (chan.attnfunc == 3) // spot
|
|
{
|
|
float dist2 = ldir.Length2();
|
|
float dist = sqrtf(dist2);
|
|
ldir = ldir / dist;
|
|
attn = std::max(0.0f, ldir * light->dir);
|
|
|
|
float cosAtt = light->cosatt.x + (light->cosatt.y * attn) + (light->cosatt.z * attn * attn);
|
|
float distAtt = light->distatt.x + (light->distatt.y * dist) + (light->distatt.z * dist2);
|
|
attn = SafeDivide(std::max(0.0f, cosAtt), distAtt);
|
|
}
|
|
else if (chan.attnfunc == 1) // specular
|
|
{
|
|
// donko - what is going on here? 655.36 is a guess but seems about right.
|
|
attn = (light->pos * normal) > -655.36 ? std::max(0.0f, (light->dir * normal)) : 0;
|
|
ldir.set(1.0f, attn, attn * attn);
|
|
|
|
float cosAtt = std::max(0.0f, light->cosatt * ldir);
|
|
float distAtt = light->distatt * ldir;
|
|
attn = SafeDivide(std::max(0.0f, cosAtt), distAtt);
|
|
}
|
|
else
|
|
{
|
|
PanicAlert("LightColor");
|
|
return;
|
|
}
|
|
|
|
switch (chan.diffusefunc)
|
|
{
|
|
case LIGHTDIF_NONE:
|
|
AddScaledIntegerColor(light->color, attn, lightCol);
|
|
break;
|
|
case LIGHTDIF_SIGN:
|
|
{
|
|
float difAttn = ldir * normal;
|
|
AddScaledIntegerColor(light->color, attn * difAttn, lightCol);
|
|
}
|
|
break;
|
|
|
|
case LIGHTDIF_CLAMP:
|
|
{
|
|
float difAttn = std::max(0.0f, ldir * normal);
|
|
AddScaledIntegerColor(light->color, attn * difAttn, lightCol);
|
|
}
|
|
break;
|
|
default: _assert_(0);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void LightAlpha(const Vec3 &pos, const Vec3 &normal, u8 lightNum, const LitChannel &chan, float &lightCol)
|
|
{
|
|
const LightPointer *light = (const LightPointer*)&xfmem.lights[lightNum];
|
|
|
|
if (!(chan.attnfunc & 1))
|
|
{
|
|
// atten disabled
|
|
switch (chan.diffusefunc)
|
|
{
|
|
case LIGHTDIF_NONE:
|
|
lightCol += light->color[0];
|
|
break;
|
|
case LIGHTDIF_SIGN:
|
|
{
|
|
Vec3 ldir = (light->pos - pos).Normalized();
|
|
float diffuse = ldir * normal;
|
|
lightCol += light->color[0] * diffuse;
|
|
}
|
|
break;
|
|
case LIGHTDIF_CLAMP:
|
|
{
|
|
Vec3 ldir = (light->pos - pos).Normalized();
|
|
float diffuse = std::max(0.0f, ldir * normal);
|
|
lightCol += light->color[0] * diffuse;
|
|
}
|
|
break;
|
|
default: _assert_(0);
|
|
}
|
|
}
|
|
else // spec and spot
|
|
{
|
|
Vec3 ldir = light->pos - pos;
|
|
float attn;
|
|
|
|
if (chan.attnfunc == 3) // spot
|
|
{
|
|
float dist2 = ldir.Length2();
|
|
float dist = sqrtf(dist2);
|
|
ldir = ldir / dist;
|
|
attn = std::max(0.0f, ldir * light->dir);
|
|
|
|
float cosAtt = light->cosatt.x + (light->cosatt.y * attn) + (light->cosatt.z * attn * attn);
|
|
float distAtt = light->distatt.x + (light->distatt.y * dist) + (light->distatt.z * dist2);
|
|
attn = SafeDivide(std::max(0.0f, cosAtt), distAtt);
|
|
}
|
|
else /* if (chan.attnfunc == 1) */ // specular
|
|
{
|
|
// donko - what is going on here? 655.36 is a guess but seems about right.
|
|
attn = (light->pos * normal) > -655.36 ? std::max(0.0f, (light->dir * normal)) : 0;
|
|
ldir.set(1.0f, attn, attn * attn);
|
|
|
|
float cosAtt = light->cosatt * ldir;
|
|
float distAtt = light->distatt * ldir;
|
|
attn = SafeDivide(std::max(0.0f, cosAtt), distAtt);
|
|
}
|
|
|
|
switch (chan.diffusefunc)
|
|
{
|
|
case LIGHTDIF_NONE:
|
|
lightCol += light->color[0] * attn;
|
|
break;
|
|
case LIGHTDIF_SIGN:
|
|
{
|
|
float difAttn = ldir * normal;
|
|
lightCol += light->color[0] * attn * difAttn;
|
|
}
|
|
break;
|
|
|
|
case LIGHTDIF_CLAMP:
|
|
{
|
|
float difAttn = std::max(0.0f, ldir * normal);
|
|
lightCol += light->color[0] * attn * difAttn;
|
|
}
|
|
break;
|
|
default: _assert_(0);
|
|
}
|
|
}
|
|
}
|
|
|
|
void TransformColor(const InputVertexData *src, OutputVertexData *dst)
|
|
{
|
|
for (u32 chan = 0; chan < xfmem.numChan.numColorChans; chan++)
|
|
{
|
|
// abgr
|
|
u8 matcolor[4];
|
|
u8 chancolor[4];
|
|
|
|
// color
|
|
LitChannel &colorchan = xfmem.color[chan];
|
|
if (colorchan.matsource)
|
|
*(u32*)matcolor = *(u32*)src->color[chan]; // vertex
|
|
else
|
|
*(u32*)matcolor = xfmem.matColor[chan];
|
|
|
|
if (colorchan.enablelighting)
|
|
{
|
|
Vec3 lightCol;
|
|
if (colorchan.ambsource)
|
|
{
|
|
// vertex
|
|
lightCol.x = src->color[chan][1];
|
|
lightCol.y = src->color[chan][2];
|
|
lightCol.z = src->color[chan][3];
|
|
}
|
|
else
|
|
{
|
|
u8 *ambColor = (u8*)&xfmem.ambColor[chan];
|
|
lightCol.x = ambColor[1];
|
|
lightCol.y = ambColor[2];
|
|
lightCol.z = ambColor[3];
|
|
}
|
|
|
|
u8 mask = colorchan.GetFullLightMask();
|
|
for (int i = 0; i < 8; ++i)
|
|
{
|
|
if (mask&(1<<i))
|
|
LightColor(dst->mvPosition, dst->normal[0], i, colorchan, lightCol);
|
|
}
|
|
|
|
int light_x = int(lightCol.x);
|
|
int light_y = int(lightCol.y);
|
|
int light_z = int(lightCol.z);
|
|
MathUtil::Clamp(&light_x, 0, 255);
|
|
MathUtil::Clamp(&light_y, 0, 255);
|
|
MathUtil::Clamp(&light_z, 0, 255);
|
|
chancolor[1] = (matcolor[1] * (light_x + (light_x >> 7))) >> 8;
|
|
chancolor[2] = (matcolor[2] * (light_y + (light_y >> 7))) >> 8;
|
|
chancolor[3] = (matcolor[3] * (light_z + (light_z >> 7))) >> 8;
|
|
}
|
|
else
|
|
{
|
|
*(u32*)chancolor = *(u32*)matcolor;
|
|
}
|
|
|
|
// alpha
|
|
LitChannel &alphachan = xfmem.alpha[chan];
|
|
if (alphachan.matsource)
|
|
matcolor[0] = src->color[chan][0]; // vertex
|
|
else
|
|
matcolor[0] = xfmem.matColor[chan] & 0xff;
|
|
|
|
if (xfmem.alpha[chan].enablelighting)
|
|
{
|
|
float lightCol;
|
|
if (alphachan.ambsource)
|
|
lightCol = src->color[chan][0]; // vertex
|
|
else
|
|
lightCol = (float)(xfmem.ambColor[chan] & 0xff);
|
|
|
|
u8 mask = alphachan.GetFullLightMask();
|
|
for (int i = 0; i < 8; ++i)
|
|
{
|
|
if (mask&(1<<i))
|
|
LightAlpha(dst->mvPosition, dst->normal[0], i, alphachan, lightCol);
|
|
}
|
|
|
|
int light_a = int(lightCol);
|
|
MathUtil::Clamp(&light_a, 0, 255);
|
|
chancolor[0] = (matcolor[0] * (light_a + (light_a >> 7))) >> 8;
|
|
}
|
|
else
|
|
{
|
|
chancolor[0] = matcolor[0];
|
|
}
|
|
|
|
// abgr -> rgba
|
|
*(u32*)dst->color[chan] = Common::swap32(*(u32*)chancolor);
|
|
}
|
|
}
|
|
|
|
void TransformTexCoord(const InputVertexData *src, OutputVertexData *dst, bool specialCase)
|
|
{
|
|
for (u32 coordNum = 0; coordNum < xfmem.numTexGen.numTexGens; coordNum++)
|
|
{
|
|
const TexMtxInfo &texinfo = xfmem.texMtxInfo[coordNum];
|
|
|
|
switch (texinfo.texgentype)
|
|
{
|
|
case XF_TEXGEN_REGULAR:
|
|
TransformTexCoordRegular(texinfo, coordNum, specialCase, src, dst);
|
|
break;
|
|
case XF_TEXGEN_EMBOSS_MAP:
|
|
{
|
|
const LightPointer *light = (const LightPointer*)&xfmem.lights[texinfo.embosslightshift];
|
|
|
|
Vec3 ldir = (light->pos - dst->mvPosition).Normalized();
|
|
float d1 = ldir * dst->normal[1];
|
|
float d2 = ldir * dst->normal[2];
|
|
|
|
dst->texCoords[coordNum].x = dst->texCoords[texinfo.embosssourceshift].x + d1;
|
|
dst->texCoords[coordNum].y = dst->texCoords[texinfo.embosssourceshift].y + d2;
|
|
dst->texCoords[coordNum].z = dst->texCoords[texinfo.embosssourceshift].z;
|
|
}
|
|
break;
|
|
case XF_TEXGEN_COLOR_STRGBC0:
|
|
_assert_(texinfo.sourcerow == XF_SRCCOLORS_INROW);
|
|
_assert_(texinfo.inputform == XF_TEXINPUT_AB11);
|
|
dst->texCoords[coordNum].x = (float)dst->color[0][0] / 255.0f;
|
|
dst->texCoords[coordNum].y = (float)dst->color[0][1] / 255.0f;
|
|
dst->texCoords[coordNum].z = 1.0f;
|
|
break;
|
|
case XF_TEXGEN_COLOR_STRGBC1:
|
|
_assert_(texinfo.sourcerow == XF_SRCCOLORS_INROW);
|
|
_assert_(texinfo.inputform == XF_TEXINPUT_AB11);
|
|
dst->texCoords[coordNum].x = (float)dst->color[1][0] / 255.0f;
|
|
dst->texCoords[coordNum].y = (float)dst->color[1][1] / 255.0f;
|
|
dst->texCoords[coordNum].z = 1.0f;
|
|
break;
|
|
default:
|
|
ERROR_LOG(VIDEO, "Bad tex gen type %i", texinfo.texgentype);
|
|
}
|
|
}
|
|
|
|
for (u32 coordNum = 0; coordNum < xfmem.numTexGen.numTexGens; coordNum++)
|
|
{
|
|
dst->texCoords[coordNum][0] *= (bpmem.texcoords[coordNum].s.scale_minus_1 + 1);
|
|
dst->texCoords[coordNum][1] *= (bpmem.texcoords[coordNum].t.scale_minus_1 + 1);
|
|
}
|
|
}
|
|
|
|
}
|