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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2005 Blender Foundation.
* All rights reserved.
*/
/** \file
* \ingroup shdnodes
*/
#include "node_shader_util.h"
/* **************** SCALAR MATH ******************** */
static bNodeSocketTemplate sh_node_math_in[] = {
{SOCK_FLOAT, N_("Value"), 0.5f, 0.5f, 0.5f, 1.0f, -10000.0f, 10000.0f, PROP_NONE},
{SOCK_FLOAT, N_("Value"), 0.5f, 0.5f, 0.5f, 1.0f, -10000.0f, 10000.0f, PROP_NONE},
{SOCK_FLOAT, N_("Value"), 0.0f, 0.5f, 0.5f, 1.0f, -10000.0f, 10000.0f, PROP_NONE},
{-1, ""}};
static bNodeSocketTemplate sh_node_math_out[] = {{SOCK_FLOAT, N_("Value")}, {-1, ""}};
static const char *gpu_shader_get_name(int mode)
{
switch (mode) {
case NODE_MATH_ADD:
return "math_add";
case NODE_MATH_SUBTRACT:
return "math_subtract";
case NODE_MATH_MULTIPLY:
return "math_multiply";
case NODE_MATH_DIVIDE:
return "math_divide";
case NODE_MATH_MULTIPLY_ADD:
return "math_multiply_add";
case NODE_MATH_POWER:
return "math_power";
case NODE_MATH_LOGARITHM:
return "math_logarithm";
case NODE_MATH_EXPONENT:
return "math_exponent";
case NODE_MATH_SQRT:
return "math_sqrt";
case NODE_MATH_INV_SQRT:
return "math_inversesqrt";
case NODE_MATH_ABSOLUTE:
return "math_absolute";
case NODE_MATH_RADIANS:
return "math_radians";
case NODE_MATH_DEGREES:
return "math_degrees";
case NODE_MATH_MINIMUM:
return "math_minimum";
case NODE_MATH_MAXIMUM:
return "math_maximum";
case NODE_MATH_LESS_THAN:
return "math_less_than";
case NODE_MATH_GREATER_THAN:
return "math_greater_than";
case NODE_MATH_SIGN:
return "math_sign";
case NODE_MATH_COMPARE:
return "math_compare";
case NODE_MATH_SMOOTH_MIN:
return "math_smoothmin";
case NODE_MATH_SMOOTH_MAX:
return "math_smoothmax";
case NODE_MATH_ROUND:
return "math_round";
case NODE_MATH_FLOOR:
return "math_floor";
case NODE_MATH_CEIL:
return "math_ceil";
case NODE_MATH_FRACTION:
return "math_fraction";
case NODE_MATH_MODULO:
return "math_modulo";
case NODE_MATH_TRUNC:
return "math_trunc";
case NODE_MATH_SNAP:
return "math_snap";
case NODE_MATH_WRAP:
return "math_wrap";
case NODE_MATH_PINGPONG:
return "math_pingpong";
case NODE_MATH_SINE:
return "math_sine";
case NODE_MATH_COSINE:
return "math_cosine";
case NODE_MATH_TANGENT:
return "math_tangent";
case NODE_MATH_SINH:
return "math_sinh";
case NODE_MATH_COSH:
return "math_cosh";
case NODE_MATH_TANH:
return "math_tanh";
case NODE_MATH_ARCSINE:
return "math_arcsine";
case NODE_MATH_ARCCOSINE:
return "math_arccosine";
case NODE_MATH_ARCTANGENT:
return "math_arctangent";
case NODE_MATH_ARCTAN2:
return "math_arctan2";
}
return nullptr;
}
static int gpu_shader_math(GPUMaterial *mat,
bNode *node,
bNodeExecData *UNUSED(execdata),
GPUNodeStack *in,
GPUNodeStack *out)
{
const char *name = gpu_shader_get_name(node->custom1);
if (name != nullptr) {
int ret = GPU_stack_link(mat, node, name, in, out);
if (ret && node->custom2 & SHD_MATH_CLAMP) {
float min[3] = {0.0f, 0.0f, 0.0f};
float max[3] = {1.0f, 1.0f, 1.0f};
GPU_link(
mat, "clamp_value", out[0].link, GPU_constant(min), GPU_constant(max), &out[0].link);
}
return ret;
}
else {
return 0;
}
}
static void sh_node_math_expand_in_mf_network(blender::bke::NodeMFNetworkBuilder &builder)
{
/* TODO: Implement clamp and other operations. */
const int mode = builder.bnode().custom1;
switch (mode) {
case NODE_MATH_ADD: {
static blender::fn::CustomMF_SI_SI_SO<float, float, float> fn{
"Add", [](float a, float b) { return a + b; }};
builder.set_matching_fn(fn);
break;
}
case NODE_MATH_SUBTRACT: {
static blender::fn::CustomMF_SI_SI_SO<float, float, float> fn{
"Subtract", [](float a, float b) { return a - b; }};
builder.set_matching_fn(fn);
break;
}
case NODE_MATH_MULTIPLY: {
static blender::fn::CustomMF_SI_SI_SO<float, float, float> fn{
"Multiply", [](float a, float b) { return a * b; }};
builder.set_matching_fn(fn);
break;
}
case NODE_MATH_DIVIDE: {
static blender::fn::CustomMF_SI_SI_SO<float, float, float> fn{
"Divide", [](float a, float b) { return (b != 0.0f) ? a / b : 0.0f; }};
builder.set_matching_fn(fn);
break;
}
default:
BLI_assert(false);
break;
}
}
void register_node_type_sh_math(void)
{
static bNodeType ntype;
sh_fn_node_type_base(&ntype, SH_NODE_MATH, "Math", NODE_CLASS_CONVERTOR, 0);
node_type_socket_templates(&ntype, sh_node_math_in, sh_node_math_out);
node_type_label(&ntype, node_math_label);
node_type_gpu(&ntype, gpu_shader_math);
node_type_update(&ntype, node_math_update);
ntype.expand_in_mf_network = sh_node_math_expand_in_mf_network;
nodeRegisterType(&ntype);
}
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