luboslenco
204 lines
15 KiB
C
204 lines
15 KiB
C
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#include "../global.h"
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char *str_tex_noise = "\
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fun hash(n: float): float { return frac(sin(n) * 10000.0); } \
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fun tex_noise_f(x: float3): float { \
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var step: float3 = float3(110.0, 241.0, 171.0); \
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var i: float3 = floor3(x); \
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var f: float3 = frac3(x); \
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var n: float = dot(i, step); \
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var u: float3 = f * f * (3.0 - 2.0 * f); \
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return lerp(lerp(lerp(hash(n + dot(step, float3(0.0, 0.0, 0.0))), hash(n + dot(step, float3(1.0, 0.0, 0.0))), u.x), \
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lerp(hash(n + dot(step, float3(0.0, 1.0, 0.0))), hash(n + dot(step, float3(1.0, 1.0, 0.0))), u.x), u.y), \
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lerp(lerp(hash(n + dot(step, float3(0.0, 0.0, 1.0))), hash(n + dot(step, float3(1.0, 0.0, 1.0))), u.x), \
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lerp(hash(n + dot(step, float3(0.0, 1.0, 1.0))), hash(n + dot(step, float3(1.0, 1.0, 1.0))), u.x), u.y), u.z); \
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} \
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fun tex_noise_fbm(p: float3, detail: float, roughness: float, lacunarity: float): float { \
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var fscale: float = 1.0; \
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var amp: float = 1.0; \
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var maxamp: float = 0.0; \
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var sum: float = 0.0; \
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var n: int = int(clamp(detail, 0.0, 8.0)); \
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for (var ii: int = 0; ii <= n; ii += 1) { \
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sum = sum + amp * tex_noise_f(p * fscale); \
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maxamp = maxamp + amp; \
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amp = amp * roughness; \
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fscale = fscale * lacunarity; \
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} \
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var rmd: float = detail - floor(detail); \
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if (rmd > 0.0) { \
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var t: float = tex_noise_f(p * fscale); \
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var sum2: float = sum + t * amp; \
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var maxamp2: float = maxamp + amp; \
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return lerp(sum / maxamp, sum2 / maxamp2, rmd); \
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} \
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return sum / maxamp; \
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} \
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fun tex_noise(p: float3, scale: float, detail: float, roughness: float, lacunarity: float, distortion: float): float3 { \
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var pp: float3 = p * scale; \
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pp = pp + distortion * (float3(tex_noise_f(pp), tex_noise_f(pp + float3(0.5, 0.0, 0.0)), tex_noise_f(pp + float3(0.0, 0.5, 0.0))) * 2.0 - 1.0); \
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var f: float = tex_noise_fbm(pp, detail, roughness, lacunarity); \
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var r: float = tex_noise_fbm(pp + float3(0.33, 0.0, 0.0), detail, roughness, lacunarity); \
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var g: float = tex_noise_fbm(pp + float3(0.0, 0.33, 0.0), detail, roughness, lacunarity); \
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return float3(f, r, g); \
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} \
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";
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static char *noise_texture_node_result(ui_node_t *node) {
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node_shader_add_function(parser_material_kong, str_tex_noise);
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char *co = parser_material_get_coord(node);
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char *scale = parser_material_parse_value_input(node->inputs->buffer[1], false);
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char *detail = parser_material_parse_value_input(node->inputs->buffer[2], false);
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char *roughness = parser_material_parse_value_input(node->inputs->buffer[3], false);
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char *lacunarity = parser_material_parse_value_input(node->inputs->buffer[4], false);
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char *distortion = parser_material_parse_value_input(node->inputs->buffer[5], false);
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return string("tex_noise(%s, %s, %s, %s, %s, %s)", co, scale, detail, roughness, lacunarity, distortion);
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}
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char *noise_texture_node_vector(ui_node_t *node, ui_node_socket_t *socket) {
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return noise_texture_node_result(node);
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}
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char *noise_texture_node_value(ui_node_t *node, ui_node_socket_t *socket) {
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return string("%s.x", noise_texture_node_result(node));
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}
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void noise_texture_node_init() {
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char *noise_dimensions_data = string("%s", _tr("3D"));
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char *noise_feature_data = string("%s", _tr("fBM"));
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ui_node_t *noise_texture_node_def =
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GC_ALLOC_INIT(ui_node_t, {.id = 0,
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.name = _tr("Noise Texture"),
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.type = "TEX_NOISE",
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.x = 0,
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.y = 0,
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.color = 0xff4982a0,
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.inputs = any_array_create_from_raw(
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(void *[]){
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GC_ALLOC_INIT(ui_node_socket_t, {.id = 0,
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.node_id = 0,
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.name = _tr("Vector"),
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.type = "VECTOR",
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.color = 0xff6363c7,
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.default_value = f32_array_create_xyz(0.0, 0.0, 0.0),
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.min = 0.0,
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.max = 1.0,
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.precision = 100,
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.display = 0}),
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GC_ALLOC_INIT(ui_node_socket_t, {.id = 0,
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.node_id = 0,
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.name = _tr("Scale"),
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.type = "VALUE",
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.color = 0xffa1a1a1,
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.default_value = f32_array_create_x(5.0),
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.min = 0.0,
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.max = 10.0,
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.precision = 100,
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.display = 0}),
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GC_ALLOC_INIT(ui_node_socket_t, {.id = 0,
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.node_id = 0,
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.name = _tr("Detail"),
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.type = "VALUE",
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.color = 0xffa1a1a1,
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.default_value = f32_array_create_x(2.0),
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.min = 0.0,
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.max = 8.0,
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.precision = 100,
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.display = 0}),
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GC_ALLOC_INIT(ui_node_socket_t, {.id = 0,
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.node_id = 0,
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.name = _tr("Roughness"),
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.type = "VALUE",
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.color = 0xffa1a1a1,
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.default_value = f32_array_create_x(0.5),
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.min = 0.0,
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.max = 1.0,
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.precision = 100,
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.display = 0}),
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GC_ALLOC_INIT(ui_node_socket_t, {.id = 0,
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.node_id = 0,
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.name = _tr("Lacunarity"),
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.type = "VALUE",
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.color = 0xffa1a1a1,
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.default_value = f32_array_create_x(2.0),
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.min = 0.0,
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.max = 10.0,
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.precision = 100,
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.display = 0}),
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GC_ALLOC_INIT(ui_node_socket_t, {.id = 0,
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.node_id = 0,
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.name = _tr("Distortion"),
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.type = "VALUE",
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.color = 0xffa1a1a1,
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.default_value = f32_array_create_x(0.0),
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.min = -10.0,
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.max = 10.0,
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.precision = 100,
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.display = 0}),
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},
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6),
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.outputs = any_array_create_from_raw(
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(void *[]){
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GC_ALLOC_INIT(ui_node_socket_t, {.id = 0,
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.node_id = 0,
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.name = _tr("Factor"),
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.type = "VALUE",
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.color = 0xffa1a1a1,
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.default_value = f32_array_create_x(0.5),
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.min = 0.0,
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.max = 1.0,
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.precision = 100,
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.display = 0}),
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GC_ALLOC_INIT(ui_node_socket_t, {.id = 0,
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.node_id = 0,
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.name = _tr("Color"),
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.type = "RGBA",
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.color = 0xffc7c729,
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.default_value = f32_array_create_xyzw(0.5, 0.5, 0.5, 1.0),
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.min = 0.0,
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.max = 1.0,
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.precision = 100,
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.display = 0}),
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},
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2),
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.buttons = any_array_create_from_raw(
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(void *[]){
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GC_ALLOC_INIT(ui_node_button_t, {.name = _tr("Dimensions"),
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.type = "ENUM",
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.output = -1,
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.default_value = f32_array_create_x(0),
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.data = u8_array_create_from_string(noise_dimensions_data),
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.min = 0.0,
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.max = 3.0,
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.precision = 100,
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.height = 0}),
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GC_ALLOC_INIT(ui_node_button_t, {.name = _tr("Type"),
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.type = "ENUM",
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.output = -1,
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.default_value = f32_array_create_x(0),
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.data = u8_array_create_from_string(noise_feature_data),
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.min = 0.0,
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.max = 1.0,
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.precision = 100,
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.height = 0}),
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GC_ALLOC_INIT(ui_node_button_t, {.name = _tr("Normalize"),
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.type = "BOOL",
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.output = -1,
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.default_value = f32_array_create_x(0),
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.data = NULL,
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.min = 0.0,
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.max = 1.0,
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.precision = 100,
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.height = 0}),
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},
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3),
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.width = 0,
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.flags = 0});
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any_array_push(nodes_material_texture, noise_texture_node_def);
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any_map_set(parser_material_node_vectors, "TEX_NOISE", noise_texture_node_vector);
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any_map_set(parser_material_node_values, "TEX_NOISE", noise_texture_node_value);
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}
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