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- Added gl_paltonemap_powtable and gl_paltonemap_reverselookup for tweaking palette tonemap generation.

This commit is contained in:
Rachael Alexanderson 2017-01-24 10:19:59 -05:00 committed by Christoph Oelckers
parent 02f678dccc
commit 6e47bf9bbc
1 changed files with 6 additions and 3 deletions
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9
src/gl/renderer/gl_postprocess.cpp
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@ -81,6 +81,9 @@ CVAR(Float, gl_exposure_min, 0.35f, CVAR_ARCHIVE)
CVAR(Float, gl_exposure_base, 0.35f, CVAR_ARCHIVE)
CVAR(Float, gl_exposure_speed, 0.05f, CVAR_ARCHIVE)
CVAR(Float, gl_paltonemap_powtable, 1.2f, CVAR_ARCHIVE)
CVAR(Bool, gl_paltonemap_reverselookup, false, CVAR_ARCHIVE)
CUSTOM_CVAR(Int, gl_tonemap, 0, CVAR_ARCHIVE)
{
if (self < 0 || self > 5)
@ -828,7 +831,7 @@ int FGLRenderer::PTM_BestColor (const uint32 *pal_in, int r, int g, int b, int f
if (firstTime)
{
firstTime = false;
for (int x = 0; x < 256; x++) powtable[x] = pow((double)x/255,1.2);
for (int x = 0; x < 256; x++) powtable[x] = pow((double)x/255, (double)gl_paltonemap_powtable);
}
for (int color = first; color < num; color++)
@ -837,9 +840,9 @@ int FGLRenderer::PTM_BestColor (const uint32 *pal_in, int r, int g, int b, int f
double y = powtable[abs(g-pal[color].g)];
double z = powtable[abs(b-pal[color].b)];
fdist = x + y + z;
if (color == first || fdist < fbestdist)
if (color == first || ((gl_paltonemap_reverselookup)?(fdist <= fbestdist):(fdist < fbestdist)))
{
if (fdist == 0)
if (fdist == 0 && !gl_paltonemap_reverselookup)
return color;
fbestdist = fdist;