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Remove redundant code from Polymost fog 

Patch from Fox.

git-svn-id: https://svn.eduke32.com/eduke32@6961 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
hendricks266 2018-08-02 01:21:16 +00:00
parent eb964f15d8
commit e38dc3f674
1 changed files with 14 additions and 25 deletions
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39
source/build/src/polymost.cpp
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@ -1332,27 +1332,20 @@ void polymost2_calc_fog(int32_t shade, int32_t vis, int32_t pal)
if (nofog) return; if (nofog) return;
fogresult = 0.f; fogresult = 0.f;
fogresult2 = -GL_FOG_MAX; // hide fog behind the camera
fogcol = fogtable[pal]; fogcol = fogtable[pal];
if (((uint8_t)(vis + 16)) > 0 && g_visibility > 0) if (((uint8_t)(vis + 16)) > 0 && g_visibility > 0)
{ {
GLfloat glfogconstant = 262144.f; constexpr GLfloat glfogconstant = 262144.f;
GLfloat fogrange = (frealmaxshade * glfogconstant) / (((uint8_t)(vis + 16)) * globalvisibility); GLfloat fogrange = (frealmaxshade * glfogconstant) / (((uint8_t)(vis + 16)) * globalvisibility);
GLfloat normalizedshade = shade / frealmaxshade; GLfloat normalizedshade = shade / frealmaxshade;
GLfloat fogshade = normalizedshade * fogrange; GLfloat fogshade = normalizedshade * fogrange;
fogresult = -fogshade; // fogresult = -fogshade; // uncomment this to incorporate shades in the fog
fogresult2 = fogrange - fogshade; fogresult2 = fogrange - fogshade;
// substract shade from fog
if (shade > 0 && shade < realmaxshade)
{
fogresult = 1.f - (fogresult2 / (fogresult2 - fogresult));
fogresult = (fogresult - normalizedshade) / (1.f - normalizedshade);
fogresult = -((fogresult2 / (1.f - fogresult)) - fogresult2) ;
}
} }
else
fogresult2 = -GL_FOG_MAX; // hide fog behind the camera
} }
void calc_and_apply_fog(int32_t tile, int32_t shade, int32_t vis, int32_t pal) void calc_and_apply_fog(int32_t tile, int32_t shade, int32_t vis, int32_t pal)
@ -1362,27 +1355,20 @@ void calc_and_apply_fog(int32_t tile, int32_t shade, int32_t vis, int32_t pal)
if (r_usenewshading == 4) if (r_usenewshading == 4)
{ {
fogresult = 0.f; fogresult = 0.f;
fogresult2 = -GL_FOG_MAX; // hide fog behind the camera
fogcol = fogtable[pal]; fogcol = fogtable[pal];
if (((uint8_t)(vis + 16)) > 0 && globalvisibility > 0) if (((uint8_t)(vis + 16)) > 0 && globalvisibility > 0)
{ {
GLfloat glfogconstant = 262144.f; constexpr GLfloat glfogconstant = 262144.f;
GLfloat fogrange = (frealmaxshade * glfogconstant) / (((uint8_t)(vis + 16)) * globalvisibility); GLfloat fogrange = (frealmaxshade * glfogconstant) / (((uint8_t)(vis + 16)) * globalvisibility);
GLfloat normalizedshade = shade / frealmaxshade; GLfloat normalizedshade = shade / frealmaxshade;
GLfloat fogshade = normalizedshade * fogrange; GLfloat fogshade = normalizedshade * fogrange;
fogresult = -fogshade; // fogresult = -fogshade; // uncomment this to incorporate shades in the fog
fogresult2 = fogrange - fogshade; fogresult2 = fogrange - fogshade;
// substract shade from fog
if (shade > 0 && shade < realmaxshade)
{
fogresult = 1.f - (fogresult2 / (fogresult2 - fogresult));
fogresult = (fogresult - normalizedshade) / (1.f - normalizedshade);
fogresult = -((fogresult2 / (1.f - fogresult)) - fogresult2) ;
}
} }
else
fogresult2 = -GL_FOG_MAX; // hide fog behind the camera
glFogf(GL_FOG_START, fogresult); glFogf(GL_FOG_START, fogresult);
glFogf(GL_FOG_END, fogresult2); glFogf(GL_FOG_END, fogresult2);
@ -1409,8 +1395,6 @@ void calc_and_apply_fog_factor(int32_t tile, int32_t shade, int32_t vis, int32_t
if (r_usenewshading == 4) if (r_usenewshading == 4)
{ {
fogresult = 0.f;
fogresult2 = -GL_FOG_MAX; // hide fog behind the camera
fogcol = fogtable[pal]; fogcol = fogtable[pal];
if (((uint8_t)(vis + 16)) > 0 && ((((uint8_t)(vis + 16)) / 8.f) + shade) > 0) if (((uint8_t)(vis + 16)) > 0 && ((((uint8_t)(vis + 16)) / 8.f) + shade) > 0)
@ -1418,13 +1402,18 @@ void calc_and_apply_fog_factor(int32_t tile, int32_t shade, int32_t vis, int32_t
GLfloat normalizedshade = shade / frealmaxshade; GLfloat normalizedshade = shade / frealmaxshade;
GLfloat fogrange = (((uint8_t)(vis + 16)) / (8.f * frealmaxshade)) + normalizedshade; GLfloat fogrange = (((uint8_t)(vis + 16)) / (8.f * frealmaxshade)) + normalizedshade;
// substract shade from fog // subtract shades from fog
if (shade > 0 && shade < realmaxshade) if (shade > 0 && shade < realmaxshade)
fogrange = (fogrange - normalizedshade) / (1.f - normalizedshade); fogrange = (fogrange - normalizedshade) / (1.f - normalizedshade);
fogresult = -(GL_FOG_MAX * fogrange); fogresult = -(GL_FOG_MAX * fogrange);
fogresult2 = GL_FOG_MAX - (GL_FOG_MAX * fogrange); fogresult2 = GL_FOG_MAX - (GL_FOG_MAX * fogrange);
} }
else
{
fogresult = 0.f;
fogresult2 = -GL_FOG_MAX; // hide fog behind the camera
}
glFogf(GL_FOG_START, fogresult); glFogf(GL_FOG_START, fogresult);
glFogf(GL_FOG_END, fogresult2); glFogf(GL_FOG_END, fogresult2);