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https://github.com/emu-russia/pureikyubu.git
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149 lines
4.3 KiB
C++
149 lines
4.3 KiB
C++
// texture generators
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#include "pch.h"
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TexGenOut tgout[8];
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// generate NUMTEX coordinates
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void DoTexGen(const Vertex *v)
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{
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float in[4], q;
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float *mx;
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if(xfRegs.numtex == 0)
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{
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mx = &xfRegs.posmtx[xfRegs.texidx[0]][0];
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in[0] = v->tcoord[0][0];
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in[1] = v->tcoord[0][1];
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in[2] = 1.0f;
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in[3] = 1.0f;
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}
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for(unsigned n=0; n<xfRegs.numtex; n++)
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{
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if(xfRegs.texgen[n].type == 0)
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{
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// select inrow
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switch(xfRegs.texgen[n].src_row)
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{
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case XF_TEXGEN_GEOM_INROW:
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{
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in[0] = v->pos[0];
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in[1] = v->pos[1];
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in[2] = v->pos[2];
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in[3] = 1.0f;
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}
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break;
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case XF_TEXGEN_NORMAL_INROW:
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{
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in[0] = v->nrm[0];
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in[1] = v->nrm[1];
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in[2] = v->nrm[2];
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in[3] = 1.0f;
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}
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break;
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case XF_TEXGEN_TEX0_INROW:
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{
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mx = &xfRegs.posmtx[xfRegs.texidx[0]][0];
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in[0] = v->tcoord[0][0];
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in[1] = v->tcoord[0][1];
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in[2] = 1.0f;
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in[3] = 1.0f;
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}
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break;
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case XF_TEXGEN_TEX1_INROW:
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{
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mx = &xfRegs.posmtx[xfRegs.texidx[1]][0];
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in[0] = v->tcoord[1][0];
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in[1] = v->tcoord[1][1];
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in[2] = 1.0f;
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in[3] = 1.0f;
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}
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break;
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case XF_TEXGEN_TEX2_INROW:
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{
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mx = &xfRegs.posmtx[xfRegs.texidx[2]][0];
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in[0] = v->tcoord[2][0];
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in[1] = v->tcoord[2][1];
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in[2] = 1.0f;
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in[3] = 1.0f;
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}
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break;
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case XF_TEXGEN_TEX3_INROW:
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{
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mx = &xfRegs.posmtx[xfRegs.texidx[3]][0];
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in[0] = v->tcoord[3][0];
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in[1] = v->tcoord[3][1];
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in[2] = 1.0f;
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in[3] = 1.0f;
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}
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break;
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case XF_TEXGEN_TEX4_INROW:
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{
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mx = &xfRegs.posmtx[xfRegs.texidx[4]][0];
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in[0] = v->tcoord[4][0];
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in[1] = v->tcoord[4][1];
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in[2] = 1.0f;
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in[3] = 1.0f;
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}
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break;
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case XF_TEXGEN_TEX5_INROW:
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{
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mx = &xfRegs.posmtx[xfRegs.texidx[5]][0];
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in[0] = v->tcoord[5][0];
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in[1] = v->tcoord[5][1];
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in[2] = 1.0f;
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in[3] = 1.0f;
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}
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break;
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case XF_TEXGEN_TEX6_INROW:
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{
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mx = &xfRegs.posmtx[xfRegs.texidx[6]][0];
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in[0] = v->tcoord[6][0];
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in[1] = v->tcoord[6][1];
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in[2] = 1.0f;
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in[3] = 1.0f;
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}
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break;
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case XF_TEXGEN_TEX7_INROW:
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{
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mx = &xfRegs.posmtx[xfRegs.texidx[7]][0];
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in[0] = v->tcoord[7][0];
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in[1] = v->tcoord[7][1];
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in[2] = 1.0f;
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in[3] = 1.0f;
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}
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break;
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}
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mx = &xfRegs.posmtx[xfRegs.texidx[n]][0];
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// st or stq ?
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if(xfRegs.texgen[n].pojection)
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{
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tgout[n].out[0] = in[0] * mx[0] + in[1] * mx[1] + in[2] * mx[2] + mx[3];
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tgout[n].out[1] = in[0] * mx[4] + in[1] * mx[5] + in[2] * mx[6] + mx[7];
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q = in[0] * mx[8] + in[1] * mx[9] + in[2] * mx[10] + mx[11];
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tgout[n].out[0] /= q;
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tgout[n].out[1] /= q;
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}
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else
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{
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tgout[n].out[0] = in[0] * mx[0] + in[1] * mx[1] + mx[2] + mx[3];
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tgout[n].out[1] = in[0] * mx[4] + in[1] * mx[5] + mx[6] + mx[7];
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}
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// dual-transform
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}
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}
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//tgout[0].out[1] /= 1.33333;
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}
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