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/* SPDX-License-Identifier: Apache-2.0
* Copyright 2011-2022 Blender Foundation */
#pragma once
CCL_NAMESPACE_BEGIN
ccl_device void svm_vector_math(ccl_private float *value,
ccl_private float3 *vector,
NodeVectorMathType type,
float3 a,
float3 b,
float3 c,
float param1)
{
switch (type) {
case NODE_VECTOR_MATH_ADD:
*vector = a + b;
break;
case NODE_VECTOR_MATH_SUBTRACT:
*vector = a - b;
break;
case NODE_VECTOR_MATH_MULTIPLY:
*vector = a * b;
break;
case NODE_VECTOR_MATH_DIVIDE:
*vector = safe_divide_float3_float3(a, b);
break;
case NODE_VECTOR_MATH_CROSS_PRODUCT:
*vector = cross(a, b);
break;
case NODE_VECTOR_MATH_PROJECT:
*vector = project(a, b);
break;
case NODE_VECTOR_MATH_REFLECT:
*vector = reflect(a, b);
break;
case NODE_VECTOR_MATH_REFRACT:
*vector = refract(a, normalize(b), param1);
break;
case NODE_VECTOR_MATH_FACEFORWARD:
*vector = faceforward(a, b, c);
break;
case NODE_VECTOR_MATH_MULTIPLY_ADD:
*vector = a * b + c;
break;
case NODE_VECTOR_MATH_DOT_PRODUCT:
*value = dot(a, b);
break;
case NODE_VECTOR_MATH_DISTANCE:
*value = distance(a, b);
break;
case NODE_VECTOR_MATH_LENGTH:
*value = len(a);
break;
case NODE_VECTOR_MATH_SCALE:
*vector = a * param1;
break;
case NODE_VECTOR_MATH_NORMALIZE:
*vector = safe_normalize(a);
break;
case NODE_VECTOR_MATH_SNAP:
*vector = floor(safe_divide_float3_float3(a, b)) * b;
break;
case NODE_VECTOR_MATH_FLOOR:
*vector = floor(a);
break;
case NODE_VECTOR_MATH_CEIL:
*vector = ceil(a);
break;
case NODE_VECTOR_MATH_MODULO:
*vector = make_float3(safe_modulo(a.x, b.x), safe_modulo(a.y, b.y), safe_modulo(a.z, b.z));
break;
case NODE_VECTOR_MATH_WRAP:
*vector = make_float3(wrapf(a.x, b.x, c.x), wrapf(a.y, b.y, c.y), wrapf(a.z, b.z, c.z));
break;
case NODE_VECTOR_MATH_FRACTION:
*vector = a - floor(a);
break;
case NODE_VECTOR_MATH_ABSOLUTE:
*vector = fabs(a);
break;
case NODE_VECTOR_MATH_MINIMUM:
*vector = min(a, b);
break;
case NODE_VECTOR_MATH_MAXIMUM:
*vector = max(a, b);
break;
case NODE_VECTOR_MATH_SINE:
*vector = make_float3(sinf(a.x), sinf(a.y), sinf(a.z));
break;
case NODE_VECTOR_MATH_COSINE:
*vector = make_float3(cosf(a.x), cosf(a.y), cosf(a.z));
break;
case NODE_VECTOR_MATH_TANGENT:
*vector = make_float3(tanf(a.x), tanf(a.y), tanf(a.z));
break;
default:
*vector = zero_float3();
*value = 0.0f;
}
}
ccl_device float svm_math(NodeMathType type, float a, float b, float c)
{
switch (type) {
case NODE_MATH_ADD:
return a + b;
case NODE_MATH_SUBTRACT:
return a - b;
case NODE_MATH_MULTIPLY:
return a * b;
case NODE_MATH_DIVIDE:
return safe_divide(a, b);
case NODE_MATH_POWER:
return safe_powf(a, b);
case NODE_MATH_LOGARITHM:
return safe_logf(a, b);
case NODE_MATH_SQRT:
return safe_sqrtf(a);
case NODE_MATH_INV_SQRT:
return inversesqrtf(a);
case NODE_MATH_ABSOLUTE:
return fabsf(a);
case NODE_MATH_RADIANS:
return a * (M_PI_F / 180.0f);
case NODE_MATH_DEGREES:
return a * (180.0f / M_PI_F);
case NODE_MATH_MINIMUM:
return fminf(a, b);
case NODE_MATH_MAXIMUM:
return fmaxf(a, b);
case NODE_MATH_LESS_THAN:
return a < b;
case NODE_MATH_GREATER_THAN:
return a > b;
case NODE_MATH_ROUND:
return floorf(a + 0.5f);
case NODE_MATH_FLOOR:
return floorf(a);
case NODE_MATH_CEIL:
return ceilf(a);
case NODE_MATH_FRACTION:
return a - floorf(a);
case NODE_MATH_MODULO:
return safe_modulo(a, b);
case NODE_MATH_TRUNC:
return a >= 0.0f ? floorf(a) : ceilf(a);
case NODE_MATH_SNAP:
return floorf(safe_divide(a, b)) * b;
case NODE_MATH_WRAP:
return wrapf(a, b, c);
case NODE_MATH_PINGPONG:
return pingpongf(a, b);
case NODE_MATH_SINE:
return sinf(a);
case NODE_MATH_COSINE:
return cosf(a);
case NODE_MATH_TANGENT:
return tanf(a);
case NODE_MATH_SINH:
return sinhf(a);
case NODE_MATH_COSH:
return coshf(a);
case NODE_MATH_TANH:
return tanhf(a);
case NODE_MATH_ARCSINE:
return safe_asinf(a);
case NODE_MATH_ARCCOSINE:
return safe_acosf(a);
case NODE_MATH_ARCTANGENT:
return atanf(a);
case NODE_MATH_ARCTAN2:
return atan2f(a, b);
case NODE_MATH_SIGN:
return compatible_signf(a);
case NODE_MATH_EXPONENT:
return expf(a);
case NODE_MATH_COMPARE:
return ((a == b) || (fabsf(a - b) <= fmaxf(c, FLT_EPSILON))) ? 1.0f : 0.0f;
case NODE_MATH_MULTIPLY_ADD:
return a * b + c;
case NODE_MATH_SMOOTH_MIN:
return smoothminf(a, b, c);
case NODE_MATH_SMOOTH_MAX:
return -smoothminf(-a, -b, c);
default:
return 0.0f;
}
}
ccl_device float3 svm_math_blackbody_color_rec709(float t)
{
/* Calculate color in range 800..12000 using an approximation
* a/x+bx+c for R and G and ((at + b)t + c)t + d) for B.
*
* The result of this can be negative to support gamut wider than
* than rec.709, just needs to be clamped. */
if (t >= 12000.0f) {
return make_float3(0.8262954810464208f, 0.9945080501520986f, 1.566307710274283f);
}
else if (t < 800.0f) {
/* Arbitrary lower limit where light is very dim, matching OSL. */
return make_float3(5.413294490189271f, -0.20319390035873933f, -0.0822535242887164f);
}
int i = (t >= 6365.0f) ? 6 :
(t >= 3315.0f) ? 5 :
(t >= 1902.0f) ? 4 :
(t >= 1449.0f) ? 3 :
(t >= 1167.0f) ? 2 :
(t >= 965.0f) ? 1 :
0;
ccl_constant float *r = blackbody_table_r[i];
ccl_constant float *g = blackbody_table_g[i];
ccl_constant float *b = blackbody_table_b[i];
const float t_inv = 1.0f / t;
return make_float3(r[0] * t_inv + r[1] * t + r[2],
g[0] * t_inv + g[1] * t + g[2],
((b[0] * t + b[1]) * t + b[2]) * t + b[3]);
}
ccl_device_inline float3 svm_math_gamma_color(float3 color, float gamma)
{
if (gamma == 0.0f)
return make_float3(1.0f, 1.0f, 1.0f);
if (color.x > 0.0f)
color.x = powf(color.x, gamma);
if (color.y > 0.0f)
color.y = powf(color.y, gamma);
if (color.z > 0.0f)
color.z = powf(color.z, gamma);
return color;
}
CCL_NAMESPACE_END
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