diff options
Diffstat (limited to 'intern/cycles/kernel/svm/svm_ramp_util.h')
-rw-r--r-- | intern/cycles/kernel/svm/svm_ramp_util.h | 126 |
1 files changed, 59 insertions, 67 deletions
diff --git a/intern/cycles/kernel/svm/svm_ramp_util.h b/intern/cycles/kernel/svm/svm_ramp_util.h index 847108ff1c2..202596c1fe3 100644 --- a/intern/cycles/kernel/svm/svm_ramp_util.h +++ b/intern/cycles/kernel/svm/svm_ramp_util.h @@ -21,78 +21,70 @@ CCL_NAMESPACE_BEGIN /* NOTE: svm_ramp.h, svm_ramp_util.h and node_ramp_util.h must stay consistent */ -ccl_device_inline float3 rgb_ramp_lookup(const float3 *ramp, - float f, - bool interpolate, - bool extrapolate, - int table_size) +ccl_device_inline float3 +rgb_ramp_lookup(const float3 *ramp, float f, bool interpolate, bool extrapolate, int table_size) { - if((f < 0.0f || f > 1.0f) && extrapolate) { - float3 t0, dy; - if(f < 0.0f) { - t0 = ramp[0]; - dy = t0 - ramp[1], - f = -f; - } - else { - t0 = ramp[table_size - 1]; - dy = t0 - ramp[table_size - 2]; - f = f - 1.0f; - } - return t0 + dy * f * (table_size - 1); - } - - f = clamp(f, 0.0f, 1.0f) * (table_size - 1); - - /* clamp int as well in case of NaN */ - int i = clamp(float_to_int(f), 0, table_size-1); - float t = f - (float)i; - - float3 result = ramp[i]; - - if(interpolate && t > 0.0f) { - result = (1.0f - t) * result + t * ramp[i + 1]; - } - - return result; + if ((f < 0.0f || f > 1.0f) && extrapolate) { + float3 t0, dy; + if (f < 0.0f) { + t0 = ramp[0]; + dy = t0 - ramp[1], f = -f; + } + else { + t0 = ramp[table_size - 1]; + dy = t0 - ramp[table_size - 2]; + f = f - 1.0f; + } + return t0 + dy * f * (table_size - 1); + } + + f = clamp(f, 0.0f, 1.0f) * (table_size - 1); + + /* clamp int as well in case of NaN */ + int i = clamp(float_to_int(f), 0, table_size - 1); + float t = f - (float)i; + + float3 result = ramp[i]; + + if (interpolate && t > 0.0f) { + result = (1.0f - t) * result + t * ramp[i + 1]; + } + + return result; } -ccl_device float float_ramp_lookup(const float *ramp, - float f, - bool interpolate, - bool extrapolate, - int table_size) +ccl_device float float_ramp_lookup( + const float *ramp, float f, bool interpolate, bool extrapolate, int table_size) { - if((f < 0.0f || f > 1.0f) && extrapolate) { - float t0, dy; - if(f < 0.0f) { - t0 = ramp[0]; - dy = t0 - ramp[1], - f = -f; - } - else { - t0 = ramp[table_size - 1]; - dy = t0 - ramp[table_size - 2]; - f = f - 1.0f; - } - return t0 + dy * f * (table_size - 1); - } - - f = clamp(f, 0.0f, 1.0f) * (table_size - 1); - - /* clamp int as well in case of NaN */ - int i = clamp(float_to_int(f), 0, table_size-1); - float t = f - (float)i; - - float result = ramp[i]; - - if(interpolate && t > 0.0f) { - result = (1.0f - t) * result + t * ramp[i + 1]; - } - - return result; + if ((f < 0.0f || f > 1.0f) && extrapolate) { + float t0, dy; + if (f < 0.0f) { + t0 = ramp[0]; + dy = t0 - ramp[1], f = -f; + } + else { + t0 = ramp[table_size - 1]; + dy = t0 - ramp[table_size - 2]; + f = f - 1.0f; + } + return t0 + dy * f * (table_size - 1); + } + + f = clamp(f, 0.0f, 1.0f) * (table_size - 1); + + /* clamp int as well in case of NaN */ + int i = clamp(float_to_int(f), 0, table_size - 1); + float t = f - (float)i; + + float result = ramp[i]; + + if (interpolate && t > 0.0f) { + result = (1.0f - t) * result + t * ramp[i + 1]; + } + + return result; } CCL_NAMESPACE_END -#endif /* __SVM_RAMP_UTIL_H__ */ +#endif /* __SVM_RAMP_UTIL_H__ */ |