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Renderer floatification: Use floating point for decals

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This commit is contained in:
Randy Heit 2016-04-21 20:17:02 -05:00
parent cb0fe38dfe
commit 1f97488945
2 changed files with 14 additions and 21 deletions
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28
src/r_segs.cpp
View file

@ -3032,8 +3032,7 @@ static void R_RenderDecal (side_t *wall, DBaseDecal *decal, drawseg_t *clipper,
{
DVector2 decal_left, decal_right, decal_pos;
int x1, x2;
fixed_t xscale, yscale;
fixed_t topoff;
double yscale;
BYTE flipx;
double zpos;
int needrepeat = 0;
@ -3085,9 +3084,6 @@ static void R_RenderDecal (side_t *wall, DBaseDecal *decal, drawseg_t *clipper,
}
}
xscale = FLOAT2FIXED(decal->ScaleX);
yscale = FLOAT2FIXED(decal->ScaleY);
WallSpriteTile = TexMan(decal->PicNum, true);
flipx = (BYTE)(decal->RenderFlags & RF_XFLIP);
@ -3102,12 +3098,10 @@ static void R_RenderDecal (side_t *wall, DBaseDecal *decal, drawseg_t *clipper,
FWallCoords savecoord = WallC;
x2 = WallSpriteTile->GetWidth();
x1 = WallSpriteTile->LeftOffset;
x2 = x2 - x1;
x1 *= xscale;
x2 *= xscale;
double edge_right = WallSpriteTile->GetWidth();
double edge_left = WallSpriteTile->LeftOffset;
edge_right = (edge_right - edge_left) * decal->ScaleX;
edge_left *= decal->ScaleX;
double dcx, dcy;
decal->GetXY(wall, dcx, dcy);
@ -3115,8 +3109,8 @@ static void R_RenderDecal (side_t *wall, DBaseDecal *decal, drawseg_t *clipper,
DVector2 angvec = (curline->v2->fPos() - curline->v1->fPos()).Unit();
decal_left = decal_pos - x1 * angvec - ViewPos;
decal_right = decal_pos + x2 * angvec - ViewPos;
decal_left = decal_pos - edge_left * angvec - ViewPos;
decal_right = decal_pos + edge_right * angvec - ViewPos;
if (WallC.Init(decal_left, decal_right, TOO_CLOSE_Z))
goto done;
@ -3183,8 +3177,8 @@ static void R_RenderDecal (side_t *wall, DBaseDecal *decal, drawseg_t *clipper,
break;
}
topoff = WallSpriteTile->TopOffset << FRACBITS;
dc_texturemid = topoff + (zpos - ViewPos.Z) / yscale;
yscale = decal->ScaleY;
dc_texturemid = WallSpriteTile->TopOffset + (zpos - ViewPos.Z) / yscale;
// Clip sprite to drawseg
x1 = MAX<int>(clipper->x1, x1);
@ -3194,7 +3188,7 @@ static void R_RenderDecal (side_t *wall, DBaseDecal *decal, drawseg_t *clipper,
goto done;
}
PrepWall (swall, lwall, WallSpriteTile->GetWidth() << FRACBITS, x1, x2);
PrepWall (swall, lwall, WallSpriteTile->GetWidth(), x1, x2);
if (flipx)
{
@ -3242,7 +3236,7 @@ static void R_RenderDecal (side_t *wall, DBaseDecal *decal, drawseg_t *clipper,
}
// rw_offset is used as the texture's vertical scale
rw_offset = SafeDivScale30(1, yscale);
rw_offset = FLOAT2FIXED(1 / yscale);
do
{

7
src/r_things.cpp
View file

@ -632,9 +632,8 @@ void R_DrawWallSprite(vissprite_t *spr)
void R_WallSpriteColumn (void (*drawfunc)(const BYTE *column, const FTexture::Span *spans))
{
unsigned int texturecolumn = lwall[dc_x] >> FRACBITS;
dc_iscale = MulScale16 (swall[dc_x], rw_offset);
spryscale = SafeDivScale32 (1, dc_iscale);
dc_iscale = MulScale16 (swall[dc_x], rw_offset/4);
spryscale = 65536.0 / dc_iscale;
if (sprflipvert)
sprtopscreen = CenterY + dc_texturemid * spryscale;
else
@ -642,7 +641,7 @@ void R_WallSpriteColumn (void (*drawfunc)(const BYTE *column, const FTexture::Sp
const BYTE *column;
const FTexture::Span *spans;
column = WallSpriteTile->GetColumn (texturecolumn, &spans);
column = WallSpriteTile->GetColumn (lwall[dc_x] >> FRACBITS, &spans);
dc_texturefrac = 0;
drawfunc (column, spans);
rw_light += rw_lightstep;