luboslenco
60 lines
2.3 KiB
C
60 lines
2.3 KiB
C
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#include "../global.h"
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void geometry_node_init() {
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any_array_push(nodes_material_input, geometry_node_def);
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any_map_set(parser_material_node_vectors, "NEW_GEOMETRY", geometry_node_vector);
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any_map_set(parser_material_node_values, "NEW_GEOMETRY", geometry_node_value);
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}
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char *geometry_node_vector(ui_node_t *node, ui_node_socket_t *socket) {
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if (socket == node->outputs->buffer[0]) { // Position
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parser_material_kong->frag_wposition = true;
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return "input.wposition";
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}
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else if (socket == node->outputs->buffer[1]) { // Normal
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parser_material_kong->frag_n = true;
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return "n";
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}
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else if (socket == node->outputs->buffer[2]) { // Tangent
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parser_material_kong->frag_wtangent = true;
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return "input.wtangent";
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}
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else if (socket == node->outputs->buffer[3]) { // True Normal
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parser_material_kong->frag_n = true;
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return "n";
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}
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else if (socket == node->outputs->buffer[4]) { // Incoming
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parser_material_kong->frag_vvec = true;
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return "vvec";
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}
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else { // Parametric
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parser_material_kong->frag_mposition = true;
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return "input.mposition";
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}
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}
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char *geometry_node_value(ui_node_t *node, ui_node_socket_t *socket) {
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if (socket == node->outputs->buffer[6]) { // Backfacing
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return "0.0"; // SV_IsFrontFace
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// return "(1.0 - float(gl_FrontFacing))";
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}
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else if (socket == node->outputs->buffer[7]) { // Pointiness
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f32 strength = 1.0;
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f32 radius = 1.0;
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f32 offset = 0.0;
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char *store = parser_material_store_var_name(node);
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parser_material_kong->frag_n = true;
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parser_material_write(parser_material_kong, string("var %s_dx: float3 = ddx3(n);", store));
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parser_material_write(parser_material_kong, string("var %s_dy: float3 = ddy3(n);", store));
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parser_material_write(parser_material_kong,
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string("var %s_curvature: float = max(dot(%s_dx, %s_dx), dot(%s_dy, %s_dy));", store, store, store, store, store));
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parser_material_write(parser_material_kong, string("%s_curvature = clamp(pow(%s_curvature, (1.0 / %s) * 0.25) * %s * 2.0 + %s / 10.0, 0.0, 1.0);",
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store, store, f32_to_string(radius), f32_to_string(strength), f32_to_string(offset)));
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return string("%s_curvature", store);
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}
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else { // Random Per Island
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return "0.0";
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}
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}
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