OrdinaryMagician/vkdoom_m
OrdinaryMagician/vkdoom_m
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Renderer floatification: Use floating point for wall scale and yrepeat

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This commit is contained in:
Randy Heit 2016-04-22 22:54:04 -05:00
commit f1b3f59bcc
10 changed files with 115 additions and 122 deletions
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21
src/r_sky.cpp
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@ -41,8 +41,8 @@
FTextureID skyflatnum;
FTextureID sky1texture, sky2texture;
double skytexturemid;
fixed_t skyscale;
fixed_t skyiscale;
double skyscale;
float skyiscale;
bool skystretch;
fixed_t sky1cyl, sky2cyl;
@ -54,7 +54,7 @@ CUSTOM_CVAR (Bool, r_stretchsky, true, CVAR_ARCHIVE)
R_InitSkyMap ();
}
fixed_t freelookviewheight;
int freelookviewheight;
//==========================================================================
//
@ -112,19 +112,18 @@ void R_InitSkyMap ()
if (viewwidth != 0 && viewheight != 0)
{
skyiscale = (r_Yaspect*FRACUNIT) / ((freelookviewheight * viewwidth) / viewwidth);
skyscale = (((freelookviewheight * viewwidth) / viewwidth) << FRACBITS) /
(r_Yaspect);
skyiscale = float(r_Yaspect / freelookviewheight);
skyscale = freelookviewheight / r_Yaspect;
skyiscale = Scale (skyiscale, FieldOfView, 2048);
skyscale = Scale (skyscale, 2048, FieldOfView);
skyiscale *= FieldOfView / 2048.f;
skyscale *= 2048.0 / FieldOfView;
}
if (skystretch)
{
skyscale = Scale(skyscale, SKYSTRETCH_HEIGHT, skyheight);
skyiscale = Scale(skyiscale, skyheight, SKYSTRETCH_HEIGHT);
skytexturemid = skytexturemid * skyheight / SKYSTRETCH_HEIGHT;
skyscale *= (double)SKYSTRETCH_HEIGHT / skyheight;
skyiscale *= skyheight / (float)SKYSTRETCH_HEIGHT;
skytexturemid *= skyheight / (double)SKYSTRETCH_HEIGHT;
}
// The standard Doom sky texture is 256 pixels wide, repeated 4 times over 360 degrees,