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Differential D5481 Diff 17112 source/blender/nodes/shader/nodes/node_shader_math.c

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source/blender/nodes/shader/nodes/node_shader_math.c

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/** \file /** \file
* \ingroup shdnodes * \ingroup shdnodes
*/ */
#include "node_shader_util.h" #include "node_shader_util.h"
/* **************** SCALAR MATH ******************** */ /* **************** SCALAR MATH ******************** */
static bNodeSocketTemplate sh_node_math_in[] = { static bNodeSocketTemplate sh_node_math_in[] = {
{SOCK_FLOAT, 1, N_("Value"), 0.5f, 0.5f, 0.5f, 1.0f, -10000.0f, 10000.0f, PROP_NONE}, {SOCK_FLOAT, 1, N_("A"), 0.5f, 0.5f, 0.5f, 1.0f, -10000.0f, 10000.0f, PROP_NONE},
{SOCK_FLOAT, 1, N_("Value"), 0.5f, 0.5f, 0.5f, 1.0f, -10000.0f, 10000.0f, PROP_NONE}, {SOCK_FLOAT, 1, N_("B"), 0.5f, 0.5f, 0.5f, 1.0f, -10000.0f, 10000.0f, PROP_NONE},
{-1, 0, ""}}; {-1, 0, ""}};
static bNodeSocketTemplate sh_node_math_out[] = {{SOCK_FLOAT, 0, N_("Value")}, {-1, 0, ""}}; static bNodeSocketTemplate sh_node_math_out[] = {{SOCK_FLOAT, 0, N_("Result")}, {-1, 0, ""}};
static void node_shader_exec_math(void *UNUSED(data),
int UNUSED(thread),
bNode *node,
bNodeExecData *UNUSED(execdata),
bNodeStack **in,
bNodeStack **out)
{
float a, b, r = 0.0f;
nodestack_get_vec(&a, SOCK_FLOAT, in[0]);
nodestack_get_vec(&b, SOCK_FLOAT, in[1]);
switch (node->custom1) {
case NODE_MATH_ADD:
r = a + b;
break;
case NODE_MATH_SUB:
r = a - b;
break;
case NODE_MATH_MUL:
r = a * b;
break;
case NODE_MATH_DIVIDE: {
if (b == 0) { /* We don't want to divide by zero. */
r = 0.0;
}
else {
r = a / b;
}
break;
}
case NODE_MATH_SIN: {
/* This one only takes one input, so we've got to choose. */
if (in[0]->hasinput || !in[1]->hasinput) {
r = sinf(a);
}
else {
r = sinf(b);
}
break;
}
case NODE_MATH_COS: {
/* This one only takes one input, so we've got to choose. */
if (in[0]->hasinput || !in[1]->hasinput) {
r = cosf(a);
}
else {
r = cosf(b);
}
break;
}
case NODE_MATH_TAN: {
/* This one only takes one input, so we've got to choose. */
if (in[0]->hasinput || !in[1]->hasinput) {
r = tanf(a);
}
else {
r = tanf(b);
}
break;
}
case NODE_MATH_ASIN: {
/* This one only takes one input, so we've got to choose. */
if (in[0]->hasinput || !in[1]->hasinput) {
/* Can't do the impossible... */
if (a <= 1 && a >= -1) {
r = asinf(a);
}
else {
r = 0.0;
}
}
else {
/* Can't do the impossible... */
if (b <= 1 && b >= -1) {
r = asinf(b);
}
else {
r = 0.0;
}
}
break;
}
case NODE_MATH_ACOS: {
/* This one only takes one input, so we've got to choose. */
if (in[0]->hasinput || !in[1]->hasinput) {
/* Can't do the impossible... */
if (a <= 1 && a >= -1) {
r = acosf(a);
}
else {
r = 0.0;
}
}
else {
/* Can't do the impossible... */
if (b <= 1 && b >= -1) {
r = acosf(b);
}
else {
r = 0.0;
}
}
break;
}
case NODE_MATH_ATAN: {
/* This one only takes one input, so we've got to choose. */
if (in[0]->hasinput || !in[1]->hasinput) {
r = atan(a);
}
else {
r = atan(b);
}
break;
}
case NODE_MATH_POW: {
/* Only raise negative numbers by full integers */
if (a >= 0) {
r = pow(a, b);
}
else {
float y_mod_1 = fabsf(fmodf(b, 1.0f));
/* if input value is not nearly an integer,
* fall back to zero, nicer than straight rounding. */
if (y_mod_1 > 0.999f || y_mod_1 < 0.001f) {
r = powf(a, floorf(b + 0.5f));
}
else {
r = 0.0f;
}
}
break;
}
case NODE_MATH_LOG: {
/* Don't want any imaginary numbers... */
if (a > 0 && b > 0) {
r = log(a) / log(b);
}
else {
r = 0.0;
}
break;
}
case NODE_MATH_MIN: {
if (a < b) {
r = a;
}
else {
r = b;
}
break;
}
case NODE_MATH_MAX: {
if (a > b) {
r = a;
}
else {
r = b;
}
break;
}
case NODE_MATH_ROUND: {
/* This one only takes one input, so we've got to choose. */
if (in[0]->hasinput || !in[1]->hasinput) {
r = (a < 0) ? (int)(a - 0.5f) : (int)(a + 0.5f);
}
else {
r = (b < 0) ? (int)(b - 0.5f) : (int)(b + 0.5f);
}
break;
}
case NODE_MATH_LESS: {
if (a < b) {
r = 1.0f;
}
else {
r = 0.0f;
}
break;
}
case NODE_MATH_GREATER: {
if (a > b) {
r = 1.0f;
}
else {
r = 0.0f;
}
break;
}
case NODE_MATH_MOD: {
if (b == 0.0f) {
r = 0.0f;
}
else {
r = fmod(a, b);
}
break;
}
case NODE_MATH_ABS: {
r = fabsf(a);
break;
}
case NODE_MATH_ATAN2: {
r = atan2(a, b);
break;
}
case NODE_MATH_FLOOR: {
/* This one only takes one input, so we've got to choose. */
if (in[0]->hasinput || !in[1]->hasinput) {
r = floorf(a);
}
else {
r = floorf(b);
}
break;
}
case NODE_MATH_CEIL: {
/* This one only takes one input, so we've got to choose. */
if (in[0]->hasinput || !in[1]->hasinput) {
r = ceilf(a);
}
else {
r = ceilf(b);
}
break;
}
case NODE_MATH_FRACT: {
/* This one only takes one input, so we've got to choose. */
if (in[0]->hasinput || !in[1]->hasinput) {
r = a - floorf(a);
}
else {
r = b - floorf(b);
}
break;
}
case NODE_MATH_SQRT: {
/* This one only takes one input, so we've got to choose. */
if (in[0]->hasinput || !in[1]->hasinput) {
if (a > 0) {
r = sqrt(a);
}
else {
r = 0.0;
}
}
else {
if (b > 0) {
r = sqrt(b);
}
else {
r = 0.0;
}
}
break;
}
}
if (node->custom2 & SHD_MATH_CLAMP) {
CLAMP(r, 0.0f, 1.0f);
}
out[0]->vec[0] = r;
}
static int gpu_shader_math(GPUMaterial *mat, static int gpu_shader_math(GPUMaterial *mat,
bNode *node, bNode *node,
bNodeExecData *UNUSED(execdata), bNodeExecData *UNUSED(execdata),
GPUNodeStack *in, GPUNodeStack *in,
GPUNodeStack *out) GPUNodeStack *out)
{ {
static const char *names[] = { static const char *names[] = {
"math_add", "math_subtract", "math_multiply", "math_divide", "math_sine", [NODE_MATH_ADD] = "math_add",
"math_cosine", "math_tangent", "math_asin", "math_acos", "math_atan", [NODE_MATH_SUBTRACT] = "math_subtract",
"math_pow", "math_log", "math_min", "math_max", "math_round", [NODE_MATH_MULTIPLY] = "math_multiply",
"math_less_than", "math_greater_than", "math_modulo", "math_abs", "math_atan2", [NODE_MATH_DIVIDE] = "math_divide",
"math_floor", "math_ceil", "math_fract", "math_sqrt",
[NODE_MATH_POWER] = "math_power",
[NODE_MATH_LOGARITHM] = "math_logarithm",
[NODE_MATH_SQRT] = "math_sqrt",
[NODE_MATH_ABSOLUTE] = "math_absolute",
[NODE_MATH_MINIMUM] = "math_minimum",
[NODE_MATH_MAXIMUM] = "math_maximum",
[NODE_MATH_LESS_THAN] = "math_less_than",
[NODE_MATH_GREATER_THAN] = "math_greater_than",
[NODE_MATH_ROUND] = "math_round",
[NODE_MATH_FLOOR] = "math_floor",
[NODE_MATH_CEIL] = "math_ceil",
[NODE_MATH_FRACTION] = "math_fraction",
[NODE_MATH_MODULO] = "math_modulo",
[NODE_MATH_SINE] = "math_sine",
[NODE_MATH_COSINE] = "math_cosine",
[NODE_MATH_TANGENT] = "math_tangent",
[NODE_MATH_ARCSINE] = "math_arcsine",
[NODE_MATH_ARCCOSINE] = "math_arccosine",
[NODE_MATH_ARCTANGENT] = "math_arctangent",
[NODE_MATH_ARCTAN2] = "math_arctan2",
}; };
switch (node->custom1) { return GPU_stack_link(mat, node, names[node->custom1], in, out);
case NODE_MATH_ADD:
case NODE_MATH_SUB:
case NODE_MATH_MUL:
case NODE_MATH_DIVIDE:
case NODE_MATH_POW:
case NODE_MATH_LOG:
case NODE_MATH_MIN:
case NODE_MATH_MAX:
case NODE_MATH_LESS:
case NODE_MATH_GREATER:
case NODE_MATH_MOD:
case NODE_MATH_ATAN2:
GPU_stack_link(mat, node, names[node->custom1], in, out);
break;
case NODE_MATH_SIN:
case NODE_MATH_COS:
case NODE_MATH_TAN:
case NODE_MATH_ASIN:
case NODE_MATH_ACOS:
case NODE_MATH_ATAN:
case NODE_MATH_ROUND:
case NODE_MATH_ABS:
case NODE_MATH_FLOOR:
case NODE_MATH_FRACT:
case NODE_MATH_CEIL:
case NODE_MATH_SQRT:
if (in[0].hasinput || !in[1].hasinput) {
/* use only first item and terminator */
GPUNodeStack tmp_in[2];
memcpy(&tmp_in[0], &in[0], sizeof(GPUNodeStack));
memcpy(&tmp_in[1], &in[2], sizeof(GPUNodeStack));
GPU_stack_link(mat, node, names[node->custom1], tmp_in, out);
}
else {
/* use only second item and terminator */
GPUNodeStack tmp_in[2];
memcpy(&tmp_in[0], &in[1], sizeof(GPUNodeStack));
memcpy(&tmp_in[1], &in[2], sizeof(GPUNodeStack));
GPU_stack_link(mat, node, names[node->custom1], tmp_in, out);
}
break;
default:
return 0;
} }
if (node->custom2 & SHD_MATH_CLAMP) { static void node_shader_update_math(bNodeTree *UNUSED(ntree), bNode *node)
float min[3] = {0.0f, 0.0f, 0.0f}; {
float max[3] = {1.0f, 1.0f, 1.0f}; bNodeSocket *sock = nodeFindSocket(node, SOCK_IN, "B");
GPU_link(mat, "clamp_value", out[0].link, GPU_constant(min), GPU_constant(max), &out[0].link); nodeSetSocketAvailability(sock,
} !ELEM(node->custom1,
NODE_MATH_SQRT,
return 1; NODE_MATH_CEIL,
NODE_MATH_SINE,
NODE_MATH_ROUND,
NODE_MATH_FLOOR,
NODE_MATH_COSINE,
NODE_MATH_ARCSINE,
NODE_MATH_TANGENT,
NODE_MATH_ABSOLUTE,
NODE_MATH_FRACTION,
NODE_MATH_ARCCOSINE,
NODE_MATH_ARCTANGENT));
} }
void register_node_type_sh_math(void) void register_node_type_sh_math(void)
{ {
static bNodeType ntype; static bNodeType ntype;
sh_node_type_base(&ntype, SH_NODE_MATH, "Math", NODE_CLASS_CONVERTOR, 0); sh_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_socket_templates(&ntype, sh_node_math_in, sh_node_math_out);
node_type_label(&ntype, node_math_label); node_type_label(&ntype, node_math_label);
node_type_storage(&ntype, "", NULL, NULL);
node_type_exec(&ntype, NULL, NULL, node_shader_exec_math);
node_type_gpu(&ntype, gpu_shader_math); node_type_gpu(&ntype, gpu_shader_math);
node_type_update(&ntype, node_shader_update_math);
nodeRegisterType(&ntype); nodeRegisterType(&ntype);
} }