| @@ -1,4 +1,4 @@ | |||
| /* $Id: s_tritemp.h,v 1.24 2001/08/14 14:08:44 brianp Exp $ */ | |||
| /* $Id: s_tritemp.h,v 1.25 2001/09/13 21:54:29 brianp Exp $ */ | |||
| /* | |||
| * Mesa 3-D graphics library | |||
| @@ -97,14 +97,14 @@ | |||
| { | |||
| typedef struct { | |||
| const SWvertex *v0, *v1; /* Y(v0) < Y(v1) */ | |||
| GLfloat dx; /* X(v1) - X(v0) */ | |||
| GLfloat dy; /* Y(v1) - Y(v0) */ | |||
| GLfixed fdxdy; /* dx/dy in fixed-point */ | |||
| GLfixed fsx; /* first sample point x coord */ | |||
| GLfixed fsy; | |||
| GLfloat adjy; /* adjust from v[0]->fy to fsy, scaled */ | |||
| GLint lines; /* number of lines to be sampled on this edge */ | |||
| GLfixed fx0; /* fixed pt X of lower endpoint */ | |||
| GLfloat dx; /* X(v1) - X(v0) */ | |||
| GLfloat dy; /* Y(v1) - Y(v0) */ | |||
| GLfixed fdxdy; /* dx/dy in fixed-point */ | |||
| GLfixed fsx; /* first sample point x coord */ | |||
| GLfixed fsy; | |||
| GLfloat adjy; /* adjust from v[0]->fy to fsy, scaled */ | |||
| GLint lines; /* number of lines to be sampled on this edge */ | |||
| GLfixed fx0; /* fixed pt X of lower endpoint */ | |||
| } EdgeT; | |||
| #ifdef INTERP_Z | |||
| @@ -135,41 +135,41 @@ | |||
| const GLfixed fy2 = FloatToFixed(v2->win[1] - 0.5F) & snapMask; | |||
| if (fy0 <= fy1) { | |||
| if (fy1 <= fy2) { | |||
| if (fy1 <= fy2) { | |||
| /* y0 <= y1 <= y2 */ | |||
| vMin = v0; vMid = v1; vMax = v2; | |||
| vMin = v0; vMid = v1; vMax = v2; | |||
| vMin_fy = fy0; vMid_fy = fy1; vMax_fy = fy2; | |||
| } | |||
| else if (fy2 <= fy0) { | |||
| } | |||
| else if (fy2 <= fy0) { | |||
| /* y2 <= y0 <= y1 */ | |||
| vMin = v2; vMid = v0; vMax = v1; | |||
| vMin = v2; vMid = v0; vMax = v1; | |||
| vMin_fy = fy2; vMid_fy = fy0; vMax_fy = fy1; | |||
| } | |||
| else { | |||
| } | |||
| else { | |||
| /* y0 <= y2 <= y1 */ | |||
| vMin = v0; vMid = v2; vMax = v1; | |||
| vMin = v0; vMid = v2; vMax = v1; | |||
| vMin_fy = fy0; vMid_fy = fy2; vMax_fy = fy1; | |||
| bf = -bf; | |||
| } | |||
| } | |||
| } | |||
| else { | |||
| if (fy0 <= fy2) { | |||
| if (fy0 <= fy2) { | |||
| /* y1 <= y0 <= y2 */ | |||
| vMin = v1; vMid = v0; vMax = v2; | |||
| vMin = v1; vMid = v0; vMax = v2; | |||
| vMin_fy = fy1; vMid_fy = fy0; vMax_fy = fy2; | |||
| bf = -bf; | |||
| } | |||
| else if (fy2 <= fy1) { | |||
| } | |||
| else if (fy2 <= fy1) { | |||
| /* y2 <= y1 <= y0 */ | |||
| vMin = v2; vMid = v1; vMax = v0; | |||
| vMin = v2; vMid = v1; vMax = v0; | |||
| vMin_fy = fy2; vMid_fy = fy1; vMax_fy = fy0; | |||
| bf = -bf; | |||
| } | |||
| else { | |||
| } | |||
| else { | |||
| /* y1 <= y2 <= y0 */ | |||
| vMin = v1; vMid = v2; vMax = v0; | |||
| vMin = v1; vMid = v2; vMax = v0; | |||
| vMin_fy = fy1; vMid_fy = fy2; vMax_fy = fy0; | |||
| } | |||
| } | |||
| } | |||
| /* fixed point X coords */ | |||
| @@ -197,7 +197,7 @@ | |||
| /* Do backface culling */ | |||
| if (area * bf < 0.0) | |||
| return; | |||
| return; | |||
| if (area == 0.0F) | |||
| return; | |||
| @@ -381,7 +381,7 @@ | |||
| span.redStep = SignedFloatToFixed(drdx); | |||
| drdy = oneOverArea * (eMaj.dx * eBot_dr - eMaj_dr * eBot.dx); | |||
| eMaj_dg = (GLint) vMax->color[GCOMP] - (GLint) vMin->color[GCOMP]; | |||
| eBot_dg = (GLint) vMid->color[GCOMP] - (GLint) vMin->color[GCOMP]; | |||
| eBot_dg = (GLint) vMid->color[GCOMP] - (GLint) vMin->color[GCOMP]; | |||
| dgdx = oneOverArea * (eMaj_dg * eBot.dy - eMaj.dy * eBot_dg); | |||
| span.greenStep = SignedFloatToFixed(dgdx); | |||
| dgdy = oneOverArea * (eMaj.dx * eBot_dg - eMaj_dg * eBot.dx); | |||
| @@ -389,7 +389,7 @@ | |||
| eBot_db = (GLint) vMid->color[BCOMP] - (GLint) vMin->color[BCOMP]; | |||
| dbdx = oneOverArea * (eMaj_db * eBot.dy - eMaj.dy * eBot_db); | |||
| span.blueStep = SignedFloatToFixed(dbdx); | |||
| dbdy = oneOverArea * (eMaj.dx * eBot_db - eMaj_db * eBot.dx); | |||
| dbdy = oneOverArea * (eMaj.dx * eBot_db - eMaj_db * eBot.dx); | |||
| # ifdef INTERP_ALPHA | |||
| eMaj_da = (GLint) vMax->color[ACOMP] - (GLint) vMin->color[ACOMP]; | |||
| eBot_da = (GLint) vMid->color[ACOMP] - (GLint) vMin->color[ACOMP]; | |||
| @@ -425,7 +425,7 @@ | |||
| span.redStep = drdx; | |||
| drdy = oneOverArea * (eMaj.dx * eBot_dr - eMaj_dr * eBot.dx); | |||
| eMaj_dg = vMax->color[GCOMP] - vMin->color[GCOMP]; | |||
| eBot_dg = vMid->color[GCOMP] - vMin->color[GCOMP]; | |||
| eBot_dg = vMid->color[GCOMP] - vMin->color[GCOMP]; | |||
| dgdx = oneOverArea * (eMaj_dg * eBot.dy - eMaj.dy * eBot_dg); | |||
| span.greenStep = dgdx; | |||
| dgdy = oneOverArea * (eMaj.dx * eBot_dg - eMaj_dg * eBot.dx); | |||
| @@ -433,7 +433,7 @@ | |||
| eBot_db = vMid->color[BCOMP] - vMin->color[BCOMP]; | |||
| dbdx = oneOverArea * (eMaj_db * eBot.dy - eMaj.dy * eBot_db); | |||
| span.blueStep = dbdx; | |||
| dbdy = oneOverArea * (eMaj.dx * eBot_db - eMaj_db * eBot.dx); | |||
| dbdy = oneOverArea * (eMaj.dx * eBot_db - eMaj_db * eBot.dx); | |||
| eMaj_da = vMax->color[ACOMP] - vMin->color[ACOMP]; | |||
| eBot_da = vMid->color[ACOMP] - vMin->color[ACOMP]; | |||
| dadx = oneOverArea * (eMaj_da * eBot.dy - eMaj.dy * eBot_da); | |||
| @@ -459,7 +459,7 @@ | |||
| span.specRedStep = SignedFloatToFixed(dsrdx); | |||
| dsrdy = oneOverArea * (eMaj.dx * eBot_dsr - eMaj_dsr * eBot.dx); | |||
| eMaj_dsg = (GLint) vMax->specular[GCOMP] - (GLint) vMin->specular[GCOMP]; | |||
| eBot_dsg = (GLint) vMid->specular[GCOMP] - (GLint) vMin->specular[GCOMP]; | |||
| eBot_dsg = (GLint) vMid->specular[GCOMP] - (GLint) vMin->specular[GCOMP]; | |||
| dsgdx = oneOverArea * (eMaj_dsg * eBot.dy - eMaj.dy * eBot_dsg); | |||
| span.specGreenStep = SignedFloatToFixed(dsgdx); | |||
| dsgdy = oneOverArea * (eMaj.dx * eBot_dsg - eMaj_dsg * eBot.dx); | |||
| @@ -467,7 +467,7 @@ | |||
| eBot_dsb = (GLint) vMid->specular[BCOMP] - (GLint) vMin->specular[BCOMP]; | |||
| dsbdx = oneOverArea * (eMaj_dsb * eBot.dy - eMaj.dy * eBot_dsb); | |||
| span.specBlueStep = SignedFloatToFixed(dsbdx); | |||
| dsbdy = oneOverArea * (eMaj.dx * eBot_dsb - eMaj_dsb * eBot.dx); | |||
| dsbdy = oneOverArea * (eMaj.dx * eBot_dsb - eMaj_dsb * eBot.dx); | |||
| } | |||
| else { | |||
| dsrdx = dsrdy = 0.0F; | |||
| @@ -490,7 +490,7 @@ | |||
| span.specRedStep = dsrdx; | |||
| dsrdy = oneOverArea * (eMaj.dx * eBot_dsr - eMaj_dsr * eBot.dx); | |||
| eMaj_dsg = vMax->specular[GCOMP] - vMin->specular[GCOMP]; | |||
| eBot_dsg = vMid->specular[GCOMP] - vMin->specular[GCOMP]; | |||
| eBot_dsg = vMid->specular[GCOMP] - vMin->specular[GCOMP]; | |||
| dsgdx = oneOverArea * (eMaj_dsg * eBot.dy - eMaj.dy * eBot_dsg); | |||
| span.specGreenStep = dsgdx; | |||
| dsgdy = oneOverArea * (eMaj.dx * eBot_dsg - eMaj_dsg * eBot.dx); | |||
| @@ -498,7 +498,7 @@ | |||
| eBot_dsb = vMid->specular[BCOMP] - vMin->specular[BCOMP]; | |||
| dsbdx = oneOverArea * (eMaj_dsb * eBot.dy - eMaj.dy * eBot_dsb); | |||
| span.specBlueStep = dsbdx; | |||
| dsbdy = oneOverArea * (eMaj.dx * eBot_dsb - eMaj_dsb * eBot.dx); | |||
| dsbdy = oneOverArea * (eMaj.dx * eBot_dsb - eMaj_dsb * eBot.dx); | |||
| } | |||
| else { | |||
| dsrdx = dsrdy = span.specRedStep = 0; | |||
| @@ -560,23 +560,23 @@ | |||
| - eMaj.dy * eBot_ds); | |||
| dsdy = oneOverArea * (eMaj.dx * eBot_ds - eMaj_ds * eBot.dx); | |||
| eMaj_dt = vMax->texcoord[0][1] * wMax - vMin->texcoord[0][1] * wMin; | |||
| eBot_dt = vMid->texcoord[0][1] * wMid - vMin->texcoord[0][1] * wMin; | |||
| span.texStep[0][1] = oneOverArea * (eMaj_dt * eBot.dy | |||
| eMaj_dt = vMax->texcoord[0][1] * wMax - vMin->texcoord[0][1] * wMin; | |||
| eBot_dt = vMid->texcoord[0][1] * wMid - vMin->texcoord[0][1] * wMin; | |||
| span.texStep[0][1] = oneOverArea * (eMaj_dt * eBot.dy | |||
| - eMaj.dy * eBot_dt); | |||
| dtdy = oneOverArea * (eMaj.dx * eBot_dt - eMaj_dt * eBot.dx); | |||
| dtdy = oneOverArea * (eMaj.dx * eBot_dt - eMaj_dt * eBot.dx); | |||
| eMaj_du = vMax->texcoord[0][2] * wMax - vMin->texcoord[0][2] * wMin; | |||
| eBot_du = vMid->texcoord[0][2] * wMid - vMin->texcoord[0][2] * wMin; | |||
| span.texStep[0][2] = oneOverArea * (eMaj_du * eBot.dy | |||
| eMaj_du = vMax->texcoord[0][2] * wMax - vMin->texcoord[0][2] * wMin; | |||
| eBot_du = vMid->texcoord[0][2] * wMid - vMin->texcoord[0][2] * wMin; | |||
| span.texStep[0][2] = oneOverArea * (eMaj_du * eBot.dy | |||
| - eMaj.dy * eBot_du); | |||
| dudy = oneOverArea * (eMaj.dx * eBot_du - eMaj_du * eBot.dx); | |||
| dudy = oneOverArea * (eMaj.dx * eBot_du - eMaj_du * eBot.dx); | |||
| eMaj_dv = vMax->texcoord[0][3] * wMax - vMin->texcoord[0][3] * wMin; | |||
| eBot_dv = vMid->texcoord[0][3] * wMid - vMin->texcoord[0][3] * wMin; | |||
| span.texStep[0][3] = oneOverArea * (eMaj_dv * eBot.dy | |||
| eMaj_dv = vMax->texcoord[0][3] * wMax - vMin->texcoord[0][3] * wMin; | |||
| eBot_dv = vMid->texcoord[0][3] * wMid - vMin->texcoord[0][3] * wMin; | |||
| span.texStep[0][3] = oneOverArea * (eMaj_dv * eBot.dy | |||
| - eMaj.dy * eBot_dv); | |||
| dvdy = oneOverArea * (eMaj.dx * eBot_dv - eMaj_dv * eBot.dx); | |||
| dvdy = oneOverArea * (eMaj.dx * eBot_dv - eMaj_dv * eBot.dx); | |||
| } | |||
| # ifdef INTERP_LAMBDA | |||
| { | |||
| @@ -616,29 +616,29 @@ | |||
| - eMaj.dy * eBot_ds); | |||
| dsdy[u] = oneOverArea * (eMaj.dx * eBot_ds - eMaj_ds * eBot.dx); | |||
| eMaj_dt = vMax->texcoord[u][1] * wMax | |||
| - vMin->texcoord[u][1] * wMin; | |||
| eBot_dt = vMid->texcoord[u][1] * wMid | |||
| - vMin->texcoord[u][1] * wMin; | |||
| span.texStep[u][1] = oneOverArea * (eMaj_dt * eBot.dy | |||
| eMaj_dt = vMax->texcoord[u][1] * wMax | |||
| - vMin->texcoord[u][1] * wMin; | |||
| eBot_dt = vMid->texcoord[u][1] * wMid | |||
| - vMin->texcoord[u][1] * wMin; | |||
| span.texStep[u][1] = oneOverArea * (eMaj_dt * eBot.dy | |||
| - eMaj.dy * eBot_dt); | |||
| dtdy[u] = oneOverArea * (eMaj.dx * eBot_dt - eMaj_dt * eBot.dx); | |||
| dtdy[u] = oneOverArea * (eMaj.dx * eBot_dt - eMaj_dt * eBot.dx); | |||
| eMaj_du = vMax->texcoord[u][2] * wMax | |||
| eMaj_du = vMax->texcoord[u][2] * wMax | |||
| - vMin->texcoord[u][2] * wMin; | |||
| eBot_du = vMid->texcoord[u][2] * wMid | |||
| eBot_du = vMid->texcoord[u][2] * wMid | |||
| - vMin->texcoord[u][2] * wMin; | |||
| span.texStep[u][2] = oneOverArea * (eMaj_du * eBot.dy | |||
| span.texStep[u][2] = oneOverArea * (eMaj_du * eBot.dy | |||
| - eMaj.dy * eBot_du); | |||
| dudy[u] = oneOverArea * (eMaj.dx * eBot_du - eMaj_du * eBot.dx); | |||
| dudy[u] = oneOverArea * (eMaj.dx * eBot_du - eMaj_du * eBot.dx); | |||
| eMaj_dv = vMax->texcoord[u][3] * wMax | |||
| eMaj_dv = vMax->texcoord[u][3] * wMax | |||
| - vMin->texcoord[u][3] * wMin; | |||
| eBot_dv = vMid->texcoord[u][3] * wMid | |||
| eBot_dv = vMid->texcoord[u][3] * wMid | |||
| - vMin->texcoord[u][3] * wMin; | |||
| span.texStep[u][3] = oneOverArea * (eMaj_dv * eBot.dy | |||
| span.texStep[u][3] = oneOverArea * (eMaj_dv * eBot.dy | |||
| - eMaj.dy * eBot_dv); | |||
| dvdy[u] = oneOverArea * (eMaj.dx * eBot_dv - eMaj_dv * eBot.dx); | |||
| dvdy[u] = oneOverArea * (eMaj.dx * eBot_dv - eMaj_dv * eBot.dx); | |||
| # ifdef INTERP_LAMBDA | |||
| { | |||
| GLfloat dudx = span.texStep[u][0] * span.texWidth[u]; | |||
| @@ -997,11 +997,11 @@ | |||
| + dsdy * adjy) + FIXED_HALF; | |||
| fdsOuter = SignedFloatToFixed(dsdy + dxOuter * dsdx); | |||
| t0 = vLower->texcoord[0][1] * T_SCALE; | |||
| ft = (GLfixed)(t0 * FIXED_SCALE + dtdx * adjx | |||
| t0 = vLower->texcoord[0][1] * T_SCALE; | |||
| ft = (GLfixed)(t0 * FIXED_SCALE + dtdx * adjx | |||
| + dtdy * adjy) + FIXED_HALF; | |||
| fdtOuter = SignedFloatToFixed(dtdy + dxOuter * dtdx); | |||
| } | |||
| fdtOuter = SignedFloatToFixed(dtdy + dxOuter * dtdx); | |||
| } | |||
| #endif | |||
| #ifdef INTERP_TEX | |||
| { | |||
| @@ -1011,18 +1011,18 @@ | |||
| sLeft = s0 + (span.texStep[0][0] * adjx + dsdy * adjy) | |||
| * (1.0F/FIXED_SCALE); | |||
| dsOuter = dsdy + dxOuter * span.texStep[0][0]; | |||
| t0 = vLower->texcoord[0][1] * invW; | |||
| tLeft = t0 + (span.texStep[0][1] * adjx + dtdy * adjy) | |||
| t0 = vLower->texcoord[0][1] * invW; | |||
| tLeft = t0 + (span.texStep[0][1] * adjx + dtdy * adjy) | |||
| * (1.0F/FIXED_SCALE); | |||
| dtOuter = dtdy + dxOuter * span.texStep[0][1]; | |||
| u0 = vLower->texcoord[0][2] * invW; | |||
| uLeft = u0 + (span.texStep[0][2] * adjx + dudy * adjy) | |||
| dtOuter = dtdy + dxOuter * span.texStep[0][1]; | |||
| u0 = vLower->texcoord[0][2] * invW; | |||
| uLeft = u0 + (span.texStep[0][2] * adjx + dudy * adjy) | |||
| * (1.0F/FIXED_SCALE); | |||
| duOuter = dudy + dxOuter * span.texStep[0][2]; | |||
| v0 = vLower->texcoord[0][3] * invW; | |||
| vLeft = v0 + (span.texStep[0][3] * adjx + dvdy * adjy) | |||
| duOuter = dudy + dxOuter * span.texStep[0][2]; | |||
| v0 = vLower->texcoord[0][3] * invW; | |||
| vLeft = v0 + (span.texStep[0][3] * adjx + dvdy * adjy) | |||
| * (1.0F/FIXED_SCALE); | |||
| dvOuter = dvdy + dxOuter * span.texStep[0][3]; | |||
| dvOuter = dvdy + dxOuter * span.texStep[0][3]; | |||
| } | |||
| #endif | |||
| #ifdef INTERP_MULTITEX | |||
| @@ -1036,15 +1036,15 @@ | |||
| sLeft[u] = s0 + (span.texStep[u][0] * adjx + dsdy[u] | |||
| * adjy) * (1.0F/FIXED_SCALE); | |||
| dsOuter[u] = dsdy[u] + dxOuter * span.texStep[u][0]; | |||
| t0 = vLower->texcoord[u][1] * invW; | |||
| tLeft[u] = t0 + (span.texStep[u][1] * adjx + dtdy[u] | |||
| t0 = vLower->texcoord[u][1] * invW; | |||
| tLeft[u] = t0 + (span.texStep[u][1] * adjx + dtdy[u] | |||
| * adjy) * (1.0F/FIXED_SCALE); | |||
| dtOuter[u] = dtdy[u] + dxOuter * span.texStep[u][1]; | |||
| u0 = vLower->texcoord[u][2] * invW; | |||
| uLeft[u] = u0 + (span.texStep[u][2] * adjx + dudy[u] | |||
| dtOuter[u] = dtdy[u] + dxOuter * span.texStep[u][1]; | |||
| u0 = vLower->texcoord[u][2] * invW; | |||
| uLeft[u] = u0 + (span.texStep[u][2] * adjx + dudy[u] | |||
| * adjy) * (1.0F/FIXED_SCALE); | |||
| duOuter[u] = dudy[u] + dxOuter * span.texStep[u][2]; | |||
| v0 = vLower->texcoord[u][3] * invW; | |||
| duOuter[u] = dudy[u] + dxOuter * span.texStep[u][2]; | |||
| v0 = vLower->texcoord[u][3] * invW; | |||
| vLeft[u] = v0 + (span.texStep[u][3] * adjx + dvdy[u] | |||
| * adjy) * (1.0F/FIXED_SCALE); | |||
| dvOuter[u] = dvdy[u] + dxOuter * span.texStep[u][3]; | |||
| @@ -1100,10 +1100,10 @@ | |||
| fdtInner = fdtOuter + span.intTexStep[1]; | |||
| #endif | |||
| #ifdef INTERP_TEX | |||
| dsInner = dsOuter + span.texStep[0][0]; | |||
| dtInner = dtOuter + span.texStep[0][1]; | |||
| duInner = duOuter + span.texStep[0][2]; | |||
| dvInner = dvOuter + span.texStep[0][3]; | |||
| dsInner = dsOuter + span.texStep[0][0]; | |||
| dtInner = dtOuter + span.texStep[0][1]; | |||
| duInner = duOuter + span.texStep[0][2]; | |||
| dvInner = dvOuter + span.texStep[0][3]; | |||
| #endif | |||
| #ifdef INTERP_MULTITEX | |||
| { | |||
| @@ -1294,10 +1294,10 @@ | |||
| ft += fdtOuter; | |||
| #endif | |||
| #ifdef INTERP_TEX | |||
| sLeft += dsOuter; | |||
| tLeft += dtOuter; | |||
| uLeft += duOuter; | |||
| vLeft += dvOuter; | |||
| sLeft += dsOuter; | |||
| tLeft += dtOuter; | |||
| uLeft += duOuter; | |||
| vLeft += dvOuter; | |||
| #endif | |||
| #ifdef INTERP_MULTITEX | |||
| { | |||
| @@ -1347,10 +1347,10 @@ | |||
| ft += fdtInner; | |||
| #endif | |||
| #ifdef INTERP_TEX | |||
| sLeft += dsInner; | |||
| tLeft += dtInner; | |||
| uLeft += duInner; | |||
| vLeft += dvInner; | |||
| sLeft += dsInner; | |||
| tLeft += dtInner; | |||
| uLeft += duInner; | |||
| vLeft += dvInner; | |||
| #endif | |||
| #ifdef INTERP_MULTITEX | |||
| { | |||