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- Add support for linearly desaturating images via r_greyscale

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- Use correct luminance values for rendering textures
Patch submitted by Forrest Voight.
This commit is contained in:
Thilo Schulz 2011-02-04 16:04:37 +00:00
parent 13836e5f4a
commit e66abb3237
6 changed files with 61 additions and 8 deletions
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21
code/renderer/tr_image.c
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@ -560,6 +560,27 @@ static void Upload32( unsigned *data,
scan = ((byte *)data);
samples = 3;
if( r_greyscale->integer )
{
for ( i = 0; i < c; i++ )
{
byte luma = LUMA(scan[i*4], scan[i*4 + 1], scan[i*4 + 2]);
scan[i*4] = luma;
scan[i*4 + 1] = luma;
scan[i*4 + 2] = luma;
}
}
else if( r_greyscale->value )
{
for ( i = 0; i < c; i++ )
{
float luma = LUMA(scan[i*4], scan[i*4 + 1], scan[i*4 + 2]);
scan[i*4] = LERP(scan[i*4], luma, r_greyscale->value);
scan[i*4 + 1] = LERP(scan[i*4 + 1], luma, r_greyscale->value);
scan[i*4 + 2] = LERP(scan[i*4 + 2], luma, r_greyscale->value);
}
}
if(lightMap)
{
if(r_greyscale->integer)