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- Added gl_paltonemap_powtable and gl_paltonemap_reverselookup for tweaking palette tonemap generation.
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1 changed files with 6 additions and 3 deletions
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@ -81,6 +81,9 @@ CVAR(Float, gl_exposure_min, 0.35f, CVAR_ARCHIVE)
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CVAR(Float, gl_exposure_base, 0.35f, CVAR_ARCHIVE)
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CVAR(Float, gl_exposure_speed, 0.05f, CVAR_ARCHIVE)
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CVAR(Float, gl_paltonemap_powtable, 1.2f, CVAR_ARCHIVE)
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CVAR(Bool, gl_paltonemap_reverselookup, false, CVAR_ARCHIVE)
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CUSTOM_CVAR(Int, gl_tonemap, 0, CVAR_ARCHIVE)
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{
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if (self < 0 || self > 5)
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@ -828,7 +831,7 @@ int FGLRenderer::PTM_BestColor (const uint32 *pal_in, int r, int g, int b, int f
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if (firstTime)
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{
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firstTime = false;
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for (int x = 0; x < 256; x++) powtable[x] = pow((double)x/255,1.2);
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for (int x = 0; x < 256; x++) powtable[x] = pow((double)x/255, (double)gl_paltonemap_powtable);
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}
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for (int color = first; color < num; color++)
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@ -837,9 +840,9 @@ int FGLRenderer::PTM_BestColor (const uint32 *pal_in, int r, int g, int b, int f
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double y = powtable[abs(g-pal[color].g)];
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double z = powtable[abs(b-pal[color].b)];
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fdist = x + y + z;
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if (color == first || fdist < fbestdist)
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if (color == first || ((gl_paltonemap_reverselookup)?(fdist <= fbestdist):(fdist < fbestdist)))
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{
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if (fdist == 0)
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if (fdist == 0 && !gl_paltonemap_reverselookup)
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return color;
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fbestdist = fdist;
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