OrdinaryMagician/vkdoom_m
OrdinaryMagician/vkdoom_m
1
Fork 0
Code Activity

Renderer floatification: Use floating point for texturemids and Y scales

Browse source
This commit is contained in:
Randy Heit 2016-04-15 20:30:05 -05:00
commit 3ef5a678d5
12 changed files with 185 additions and 182 deletions
Download patch file Download diff file Expand all files Collapse all files

9
src/r_drawt.cpp
View file

@ -1108,14 +1108,15 @@ void R_FillColumnHorizP (void)
void R_DrawMaskedColumnHoriz (const BYTE *column, const FTexture::Span *span)
{
const fixed_t texturemid = FLOAT2FIXED(dc_texturemid);
while (span->Length != 0)
{
const int length = span->Length;
const int top = span->TopOffset;
// calculate unclipped screen coordinates for post
dc_yl = (sprtopscreen + spryscale * top) >> FRACBITS;
dc_yh = (sprtopscreen + spryscale * (top + length) - FRACUNIT) >> FRACBITS;
dc_yl = xs_RoundToInt(sprtopscreen + spryscale * top);
dc_yh = xs_RoundToInt(sprtopscreen + spryscale * (top + length) - 1);
if (sprflipvert)
{
@ -1136,7 +1137,7 @@ void R_DrawMaskedColumnHoriz (const BYTE *column, const FTexture::Span *span)
if (sprflipvert)
{
dc_texturefrac = (dc_yl*dc_iscale) - (top << FRACBITS)
- fixed_t(CenterY * dc_iscale) - dc_texturemid;
- fixed_t(CenterY * dc_iscale) - texturemid;
const fixed_t maxfrac = length << FRACBITS;
while (dc_texturefrac >= maxfrac)
{
@ -1154,7 +1155,7 @@ void R_DrawMaskedColumnHoriz (const BYTE *column, const FTexture::Span *span)
}
else
{
dc_texturefrac = dc_texturemid - (top << FRACBITS)
dc_texturefrac = texturemid - (top << FRACBITS)
+ (dc_yl*dc_iscale) - fixed_t((CenterY-1) * dc_iscale);
while (dc_texturefrac < 0)
{