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Differential D614 Diff 1975 intern/cycles/kernel/svm/svm_blackbody.h

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intern/cycles/kernel/svm/svm_blackbody.h

Show First 20 Lines • Show All 49 Lines • ▼ Show 20 Lines else if (temperature <= BB_MAX_TABLE_RANGE) {
/* This is the overall size of the table */ /* This is the overall size of the table */
const int lookuptablesize = 956; const int lookuptablesize = 956;
const float lookuptablenormalize = 1.0f/956.0f; const float lookuptablenormalize = 1.0f/956.0f;
/* reconstruct a proper index for the table lookup, compared to OSL we don't look up two colors /* reconstruct a proper index for the table lookup, compared to OSL we don't look up two colors
just one (the OSL-lerp is also automatically done for us by "lookup_table_read") */ just one (the OSL-lerp is also automatically done for us by "lookup_table_read") */
float t = powf((temperature - BB_DRAPPER) * (1.0f / BB_TABLE_SPACING), (1.0f / BB_TABLE_XPOWER)); float t = powf((temperature - BB_DRAPPER) * (1.0f / BB_TABLE_SPACING), (1.0f / BB_TABLE_XPOWER));
int blackbody_table_offset = kernel_data.blackbody.table_offset; int blackbody_table_offset = kernel_data.tables.blackbody_offset;
/* Retrieve colors from the lookup table */ /* Retrieve colors from the lookup table */
float lutval = t*lookuptablenormalize; float lutval = t*lookuptablenormalize;
float R = lookup_table_read(kg, lutval, blackbody_table_offset, lookuptablesize); float R = lookup_table_read(kg, lutval, blackbody_table_offset, lookuptablesize);
lutval = (t + 319.0f*1.0f)*lookuptablenormalize; lutval = (t + 319.0f*1.0f)*lookuptablenormalize;
float G = lookup_table_read(kg, lutval, blackbody_table_offset, lookuptablesize); float G = lookup_table_read(kg, lutval, blackbody_table_offset, lookuptablesize);
lutval = (t + 319.0f*2.0f)*lookuptablenormalize; lutval = (t + 319.0f*2.0f)*lookuptablenormalize;
float B = lookup_table_read(kg, lutval, blackbody_table_offset, lookuptablesize); float B = lookup_table_read(kg, lutval, blackbody_table_offset, lookuptablesize);
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