Lines Matching refs:gamma
837 /* The gAMA chunk describes the gamma characteristics of the system
841 float gamma PNG_DEPSTRUCT; /* gamma value of image, if (valid & PNG_INFO_gAMA) */
1030 png_fixed_point int_gamma PNG_DEPSTRUCT; /* gamma of image, if (valid & PNG_INFO_gAMA) */
1338 png_color_16 background PNG_DEPSTRUCT; /* background color in screen gamma space */
1340 png_color_16 background_1 PNG_DEPSTRUCT; /* background normalized to gamma 1.0 */
1351 int gamma_shift PNG_DEPSTRUCT; /* number of "insignificant" bits 16-bit gamma */
1353 float gamma PNG_DEPSTRUCT; /* file gamma value */
1354 float screen_gamma PNG_DEPSTRUCT; /* screen gamma value (display_exponent) */
1359 png_bytep gamma_table PNG_DEPSTRUCT; /* gamma table for 8-bit depth files */
1362 png_uint_16pp gamma_16_table PNG_DEPSTRUCT; /* gamma table for 16-bit depth files */
1802 /* Handle gamma correction. Screen_gamma=(display_exponent) */
2825 /* fg and bg should be in `gamma 1.0' space; alpha is the opacity */
