diff --git a/src/r_things.c b/src/r_things.c index 446cb838d..ef496335e 100644 --- a/src/r_things.c +++ b/src/r_things.c @@ -740,9 +740,7 @@ void R_DrawFlippedMaskedColumn(column_t *column, INT32 texheight) static void R_DrawVisSprite(vissprite_t *vis) { column_t *column; -#ifdef RANGECHECK INT32 texturecolumn; -#endif fixed_t frac; patch_t *patch = vis->patch; fixed_t this_scale = vis->mobj->scale; @@ -890,28 +888,51 @@ static void R_DrawVisSprite(vissprite_t *vis) if (vis->x2 >= vid.width) vis->x2 = vid.width-1; - for (dc_x = vis->x1; dc_x <= vis->x2; dc_x++, frac += vis->xiscale) + // Split drawing loops for paper and non-paper to reduce conditional checks per sprite + if (vis->scalestep) { -#ifdef RANGECHECK + // Papersprite drawing loop - texturecolumn = frac>>FRACBITS; - - if (texturecolumn < 0 || texturecolumn >= SHORT(patch->width)) - I_Error("R_DrawSpriteRange: bad texturecolumn at %d from end", vis->x2 - dc_x); - column = (column_t *)((UINT8 *)patch + LONG(patch->columnofs[texturecolumn])); -#else - column = (column_t *)((UINT8 *)patch + LONG(patch->columnofs[frac>>FRACBITS])); -#endif - if (vis->scalestep) + for (dc_x = vis->x1; dc_x <= vis->x2; dc_x++, spryscale += vis->scalestep) { + angle_t angle = ((vis->centerangle + xtoviewangle[dc_x]) >> ANGLETOFINESHIFT) & 0xFFF; + texturecolumn = (vis->paperoffset - FixedMul(FINETANGENT(angle), vis->paperdistance)) / this_scale; + + if (texturecolumn < 0 || texturecolumn >= SHORT(patch->width)) + continue; + + if (vis->xiscale < 0) // Flipped sprite + texturecolumn = SHORT(patch->width) - 1 - texturecolumn; + sprtopscreen = (centeryfrac - FixedMul(dc_texturemid, spryscale)); dc_iscale = (0xffffffffu / (unsigned)spryscale); + + column = (column_t *)((UINT8 *)patch + LONG(patch->columnofs[texturecolumn])); + + if (vis->cut & SC_VFLIP) + R_DrawFlippedMaskedColumn(column, patch->height); + else + R_DrawMaskedColumn(column); + } + } + else + { + // Non-paper drawing loop + for (dc_x = vis->x1; dc_x <= vis->x2; dc_x++, frac += vis->xiscale) + { +#ifdef RANGECHECK + texturecolumn = frac>>FRACBITS; + if (texturecolumn < 0 || texturecolumn >= SHORT(patch->width)) + I_Error("R_DrawSpriteRange: bad texturecolumn at %d from end", vis->x2 - dc_x); + column = (column_t *)((UINT8 *)patch + LONG(patch->columnofs[texturecolumn])); +#else + column = (column_t *)((UINT8 *)patch + LONG(patch->columnofs[frac>>FRACBITS])); +#endif + if (vis->cut & SC_VFLIP) + R_DrawFlippedMaskedColumn(column, patch->height); + else + R_DrawMaskedColumn(column); } - if (vis->cut & SC_VFLIP) - R_DrawFlippedMaskedColumn(column, patch->height); - else - R_DrawMaskedColumn(column); - spryscale += vis->scalestep; } colfunc = colfuncs[BASEDRAWFUNC]; @@ -1070,8 +1091,6 @@ static void R_SplitSprite(vissprite_t *sprite) } } -//#define PROPERPAPER // This was reverted less than 7 hours before 2.2's release because of very strange, frequent crashes. - // // R_ProjectSprite // Generates a vissprite for a thing @@ -1108,7 +1127,9 @@ static void R_ProjectSprite(mobj_t *thing) fixed_t iscale; fixed_t scalestep; fixed_t offset, offset2; + boolean papersprite = !!(thing->frame & FF_PAPERSPRITE); + fixed_t paperoffset = 0, paperdistance = 0; angle_t centerangle = 0; INT32 dispoffset = thing->info->dispoffset; @@ -1127,10 +1148,6 @@ static void R_ProjectSprite(mobj_t *thing) UINT32 rollangle = AngleFixed(arollangle)>>FRACBITS; #endif -#ifndef PROPERPAPER - fixed_t ang_scale = FRACUNIT; -#endif - // transform the origin point tr_x = thing->x - viewx; tr_y = thing->y - viewy; @@ -1141,7 +1158,7 @@ static void R_ProjectSprite(mobj_t *thing) tz = gxt-gyt; // thing is behind view plane? - if (!(papersprite) && (tz < FixedMul(MINZ, this_scale))) // papersprite clipping is handled later + if (!papersprite && (tz < FixedMul(MINZ, this_scale))) // papersprite clipping is handled later return; gxt = -FixedMul(tr_x, viewsin); @@ -1149,7 +1166,7 @@ static void R_ProjectSprite(mobj_t *thing) tx = -(gyt + gxt); // too far off the side? - if (abs(tx) > tz<<2) + if (!papersprite && abs(tx) > tz<<2) // papersprite clipping is handled later return; // aspect ratio stuff @@ -1213,13 +1230,7 @@ static void R_ProjectSprite(mobj_t *thing) #endif if (sprframe->rotate != SRF_SINGLE || papersprite) - { ang = R_PointToAngle (thing->x, thing->y) - (thing->player ? thing->player->drawangle : thing->angle); -#ifndef PROPERPAPER - if (papersprite) - ang_scale = abs(FINESINE(ang>>ANGLETOFINESHIFT)); -#endif - } if (sprframe->rotate == SRF_SINGLE) { @@ -1280,31 +1291,11 @@ static void R_ProjectSprite(mobj_t *thing) else offset = -spr_offset; offset = FixedMul(offset, this_scale); -#ifndef PROPERPAPER - tx += FixedMul(offset, ang_scale); - x1 = (centerxfrac + FixedMul (tx,xscale)) >>FRACBITS; - - // off the right side? - if (x1 > viewwidth) - return; -#endif offset2 = FixedMul(spr_width, this_scale); -#ifndef PROPERPAPER - tx += FixedMul(offset2, ang_scale); - x2 = ((centerxfrac + FixedMul (tx,xscale)) >> FRACBITS) - (papersprite ? 2 : 1); - - // off the left side - if (x2 < 0) - return; -#endif if (papersprite) { - fixed_t -#ifdef PROPERPAPER - xscale2, -#endif - yscale2, cosmul, sinmul, tz2; + fixed_t xscale2, yscale2, cosmul, sinmul, tx2, tz2; INT32 range; if (ang >= ANGLE_180) @@ -1322,19 +1313,23 @@ static void R_ProjectSprite(mobj_t *thing) gyt = -FixedMul(tr_y, viewsin); tz = gxt-gyt; yscale = FixedDiv(projectiony, tz); - if (yscale < 64) return; // Fix some funky visuals + //if (yscale < 64) return; // Fix some funky visuals -#ifdef PROPERPAPER gxt = -FixedMul(tr_x, viewsin); gyt = FixedMul(tr_y, viewcos); tx = -(gyt + gxt); xscale = FixedDiv(projection, tz); x1 = (centerxfrac + FixedMul(tx,xscale))>>FRACBITS; - // off the right side? - if (x1 > viewwidth) - return; -#endif + // Get paperoffset (offset) and paperoffset (distance) + paperoffset = -FixedMul(tr_x, cosmul) - FixedMul(tr_y, sinmul); + paperdistance = -FixedMul(tr_x, sinmul) + FixedMul(tr_y, cosmul); + if (paperdistance < 0) + { + paperoffset = -paperoffset; + paperdistance = -paperdistance; + } + centerangle = viewangle - thing->angle; tr_x += FixedMul(offset2, cosmul); tr_y += FixedMul(offset2, sinmul); @@ -1342,38 +1337,52 @@ static void R_ProjectSprite(mobj_t *thing) gyt = -FixedMul(tr_y, viewsin); tz2 = gxt-gyt; yscale2 = FixedDiv(projectiony, tz2); - if (yscale2 < 64) return; // ditto + //if (yscale2 < 64) return; // ditto -#ifdef PROPERPAPER gxt = -FixedMul(tr_x, viewsin); gyt = FixedMul(tr_y, viewcos); - tx = -(gyt + gxt); + tx2 = -(gyt + gxt); xscale2 = FixedDiv(projection, tz2); - x2 = (centerxfrac + FixedMul(tx,xscale2))>>FRACBITS; x2--; + x2 = ((centerxfrac + FixedMul(tx2,xscale2))>>FRACBITS); + + if (max(tz, tz2) < FixedMul(MINZ, this_scale)) // non-papersprite clipping is handled earlier + return; + + // Needs partially clipped + if (tz < FixedMul(MINZ, this_scale)) + { + fixed_t div = FixedDiv(tz2-tz, FixedMul(MINZ, this_scale)-tz); + tx += FixedDiv(tx2-tx, div); + tz = FixedMul(MINZ, this_scale); + yscale = FixedDiv(projectiony, tz); + xscale = FixedDiv(projection, tz); + x1 = (centerxfrac + FixedMul(tx,xscale))>>FRACBITS; + } + else if (tz2 < FixedMul(MINZ, this_scale)) + { + fixed_t div = FixedDiv(tz-tz2, FixedMul(MINZ, this_scale)-tz2); + tx2 += FixedDiv(tx-tx2, div); + tz2 = FixedMul(MINZ, this_scale); + yscale2 = FixedDiv(projectiony, tz2); + xscale2 = FixedDiv(projection, tz2); + x2 = (centerxfrac + FixedMul(tx2,xscale2))>>FRACBITS; + } + + // off the right side? + if (x1 > viewwidth) + return; // off the left side if (x2 < 0) return; -#endif - - if (max(tz, tz2) < FixedMul(MINZ, this_scale)) // non-papersprite clipping is handled earlier - return; if ((range = x2 - x1) <= 0) return; -#ifdef PROPERPAPER range++; // fencepost problem -#endif - scalestep = (yscale2 - yscale)/range; - xscale = -#ifdef PROPERPAPER - FixedDiv(range<>FRACBITS; @@ -1397,7 +1405,6 @@ static void R_ProjectSprite(mobj_t *thing) // off the left side if (x2 < 0) return; -#endif } if ((thing->flags2 & MF2_LINKDRAW) && thing->tracer) // toast 16/09/16 (SYMMETRY) @@ -1518,6 +1525,9 @@ static void R_ProjectSprite(mobj_t *thing) vis->pzt = vis->pz + vis->thingheight; vis->texturemid = vis->gzt - viewz; vis->scalestep = scalestep; + vis->paperoffset = paperoffset; + vis->paperdistance = paperdistance; + vis->centerangle = centerangle; vis->mobj = thing; // Easy access! Tails 06-07-2002 diff --git a/src/r_things.h b/src/r_things.h index 8e4a543c3..1b74dd74e 100644 --- a/src/r_things.h +++ b/src/r_things.h @@ -181,8 +181,11 @@ typedef struct vissprite_s fixed_t startfrac; // horizontal position of x1 fixed_t scale, sortscale; // sortscale only differs from scale for paper sprites and MF2_LINKDRAW fixed_t scalestep; // only for paper sprites, 0 otherwise + fixed_t paperoffset, paperdistance; // for paper sprites, offset/dist relative to the angle fixed_t xiscale; // negative if flipped + angle_t centerangle; // for paper sprites + fixed_t texturemid; patch_t *patch;