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Don't upload 8 bit grayscale images as 16 bit luminance

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Using more color bits than the source image provides shouldn't improve
the quality.
This commit is contained in:
Zack Middleton 2018-07-20 23:40:07 -05:00
parent bead4aa8c7
commit 476134f5a6
2 changed files with 4 additions and 16 deletions
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10
code/renderergl1/tr_image.c
View file

@ -206,7 +206,6 @@ void R_ImageList_f( void ) {
estSize *= 4;
break;
case GL_LUMINANCE8:
case GL_LUMINANCE16:
case GL_LUMINANCE:
format = "L ";
// 1 byte per pixel?
@ -219,7 +218,6 @@ void R_ImageList_f( void ) {
estSize *= 3;
break;
case GL_LUMINANCE8_ALPHA8:
case GL_LUMINANCE16_ALPHA16:
case GL_LUMINANCE_ALPHA:
format = "LA ";
// 2 bytes per pixel?
@ -684,10 +682,8 @@ static void Upload32( unsigned *data,
{
if(r_greyscale->integer)
{
if(r_texturebits->integer == 16)
if(r_texturebits->integer == 16 || r_texturebits->integer == 32)
internalFormat = GL_LUMINANCE8;
else if(r_texturebits->integer == 32)
internalFormat = GL_LUMINANCE16;
else
internalFormat = GL_LUMINANCE;
}
@ -719,10 +715,8 @@ static void Upload32( unsigned *data,
{
if(r_greyscale->integer)
{
if(r_texturebits->integer == 16)
if(r_texturebits->integer == 16 || r_texturebits->integer == 32)
internalFormat = GL_LUMINANCE8_ALPHA8;
else if(r_texturebits->integer == 32)
internalFormat = GL_LUMINANCE16_ALPHA16;
else
internalFormat = GL_LUMINANCE_ALPHA;
}

10
code/renderergl2/tr_image.c
View file

@ -222,7 +222,6 @@ void R_ImageList_f( void ) {
estSize *= 4;
break;
case GL_LUMINANCE8:
case GL_LUMINANCE16:
case GL_LUMINANCE:
format = "L ";
// 1 byte per pixel?
@ -235,7 +234,6 @@ void R_ImageList_f( void ) {
estSize *= 3;
break;
case GL_LUMINANCE8_ALPHA8:
case GL_LUMINANCE16_ALPHA16:
case GL_LUMINANCE_ALPHA:
format = "LA ";
// 2 bytes per pixel?
@ -1724,10 +1722,8 @@ static GLenum RawImage_GetFormat(const byte *data, int numPixels, GLenum picForm
{
if(r_greyscale->integer)
{
if(r_texturebits->integer == 16)
if(r_texturebits->integer == 16 || r_texturebits->integer == 32)
internalFormat = GL_LUMINANCE8;
else if(r_texturebits->integer == 32)
internalFormat = GL_LUMINANCE16;
else
internalFormat = GL_LUMINANCE;
}
@ -1763,10 +1759,8 @@ static GLenum RawImage_GetFormat(const byte *data, int numPixels, GLenum picForm
{
if(r_greyscale->integer)
{
if(r_texturebits->integer == 16)
if(r_texturebits->integer == 16 || r_texturebits->integer == 32)
internalFormat = GL_LUMINANCE8_ALPHA8;
else if(r_texturebits->integer == 32)
internalFormat = GL_LUMINANCE16_ALPHA16;
else
internalFormat = GL_LUMINANCE_ALPHA;
}