414 lines
13 KiB
C++
414 lines
13 KiB
C++
/*************************************************************************/
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/* immediate_mesh.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "immediate_mesh.h"
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void ImmediateMesh::surface_begin(PrimitiveType p_primitive, const Ref<Material> &p_material) {
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ERR_FAIL_COND_MSG(surface_active, "Already creating a new surface.");
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active_surface_data.primitive = p_primitive;
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active_surface_data.material = p_material;
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surface_active = true;
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}
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void ImmediateMesh::surface_set_color(const Color &p_color) {
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ERR_FAIL_COND_MSG(!surface_active, "Not creating any surface. Use surface_begin() to do it.");
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if (!uses_colors) {
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colors.resize(vertices.size());
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for (uint32_t i = 0; i < colors.size(); i++) {
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colors[i] = p_color;
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}
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uses_colors = true;
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}
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current_color = p_color;
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}
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void ImmediateMesh::surface_set_normal(const Vector3 &p_normal) {
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ERR_FAIL_COND_MSG(!surface_active, "Not creating any surface. Use surface_begin() to do it.");
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if (!uses_normals) {
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normals.resize(vertices.size());
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for (uint32_t i = 0; i < normals.size(); i++) {
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normals[i] = p_normal;
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}
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uses_normals = true;
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}
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current_normal = p_normal;
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}
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void ImmediateMesh::surface_set_tangent(const Plane &p_tangent) {
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ERR_FAIL_COND_MSG(!surface_active, "Not creating any surface. Use surface_begin() to do it.");
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if (!uses_tangents) {
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tangents.resize(vertices.size());
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for (uint32_t i = 0; i < tangents.size(); i++) {
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tangents[i] = p_tangent;
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}
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uses_tangents = true;
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}
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current_tangent = p_tangent;
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}
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void ImmediateMesh::surface_set_uv(const Vector2 &p_uv) {
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ERR_FAIL_COND_MSG(!surface_active, "Not creating any surface. Use surface_begin() to do it.");
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if (!uses_uvs) {
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uvs.resize(vertices.size());
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for (uint32_t i = 0; i < uvs.size(); i++) {
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uvs[i] = p_uv;
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}
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uses_uvs = true;
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}
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current_uv = p_uv;
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}
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void ImmediateMesh::surface_set_uv2(const Vector2 &p_uv2) {
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ERR_FAIL_COND_MSG(!surface_active, "Not creating any surface. Use surface_begin() to do it.");
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if (!uses_uv2s) {
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uv2s.resize(vertices.size());
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for (uint32_t i = 0; i < uv2s.size(); i++) {
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uv2s[i] = p_uv2;
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}
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uses_uv2s = true;
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}
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current_uv2 = p_uv2;
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}
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void ImmediateMesh::surface_add_vertex(const Vector3 &p_vertex) {
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ERR_FAIL_COND_MSG(!surface_active, "Not creating any surface. Use surface_begin() to do it.");
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ERR_FAIL_COND_MSG(vertices.size() && active_surface_data.vertex_2d, "Can't mix 2D and 3D vertices in a surface.");
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if (uses_colors) {
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colors.push_back(current_color);
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}
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if (uses_normals) {
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normals.push_back(current_normal);
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}
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if (uses_tangents) {
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tangents.push_back(current_tangent);
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}
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if (uses_uvs) {
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uvs.push_back(current_uv);
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}
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if (uses_uv2s) {
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uv2s.push_back(current_uv2);
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}
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vertices.push_back(p_vertex);
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}
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void ImmediateMesh::surface_add_vertex_2d(const Vector2 &p_vertex) {
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ERR_FAIL_COND_MSG(!surface_active, "Not creating any surface. Use surface_begin() to do it.");
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ERR_FAIL_COND_MSG(vertices.size() && !active_surface_data.vertex_2d, "Can't mix 2D and 3D vertices in a surface.");
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if (uses_colors) {
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colors.push_back(current_color);
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}
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if (uses_normals) {
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normals.push_back(current_normal);
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}
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if (uses_tangents) {
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tangents.push_back(current_tangent);
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}
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if (uses_uvs) {
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uvs.push_back(current_uv);
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}
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if (uses_uv2s) {
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uv2s.push_back(current_uv2);
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}
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Vector3 v(p_vertex.x, p_vertex.y, 0);
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vertices.push_back(v);
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active_surface_data.vertex_2d = true;
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}
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void ImmediateMesh::surface_end() {
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ERR_FAIL_COND_MSG(!surface_active, "Not creating any surface. Use surface_begin() to do it.");
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ERR_FAIL_COND_MSG(!vertices.size(), "No vertices were added, surface can't be created.");
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uint32_t format = ARRAY_FORMAT_VERTEX;
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uint32_t vertex_stride = 0;
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if (active_surface_data.vertex_2d) {
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format |= ARRAY_FLAG_USE_2D_VERTICES;
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vertex_stride = sizeof(float) * 2;
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} else {
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vertex_stride = sizeof(float) * 3;
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}
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uint32_t normal_offset = 0;
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if (uses_normals) {
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format |= ARRAY_FORMAT_NORMAL;
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normal_offset = vertex_stride;
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vertex_stride += sizeof(uint32_t);
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}
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uint32_t tangent_offset = 0;
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if (uses_tangents) {
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format |= ARRAY_FORMAT_TANGENT;
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tangent_offset += vertex_stride;
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vertex_stride += sizeof(uint32_t);
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}
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AABB aabb;
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{
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surface_vertex_create_cache.resize(vertex_stride * vertices.size());
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uint8_t *surface_vertex_ptr = surface_vertex_create_cache.ptrw();
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for (uint32_t i = 0; i < vertices.size(); i++) {
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{
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float *vtx = (float *)&surface_vertex_ptr[i * vertex_stride];
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vtx[0] = vertices[i].x;
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vtx[1] = vertices[i].y;
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if (!active_surface_data.vertex_2d) {
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vtx[2] = vertices[i].z;
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}
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if (i == 0) {
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aabb = AABB(vertices[i], SMALL_VEC3); // Must have a bit of size.
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} else {
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aabb.expand_to(vertices[i]);
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}
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}
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if (uses_normals) {
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uint32_t *normal = (uint32_t *)&surface_vertex_ptr[i * vertex_stride + normal_offset];
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Vector3 n = normals[i] * Vector3(0.5, 0.5, 0.5) + Vector3(0.5, 0.5, 0.5);
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uint32_t value = 0;
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value |= CLAMP(int(n.x * 1023.0), 0, 1023);
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value |= CLAMP(int(n.y * 1023.0), 0, 1023) << 10;
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value |= CLAMP(int(n.z * 1023.0), 0, 1023) << 20;
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*normal = value;
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}
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if (uses_tangents) {
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uint32_t *tangent = (uint32_t *)&surface_vertex_ptr[i * vertex_stride + tangent_offset];
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Plane t = tangents[i];
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uint32_t value = 0;
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value |= CLAMP(int((t.normal.x * 0.5 + 0.5) * 1023.0), 0, 1023);
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value |= CLAMP(int((t.normal.y * 0.5 + 0.5) * 1023.0), 0, 1023) << 10;
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value |= CLAMP(int((t.normal.z * 0.5 + 0.5) * 1023.0), 0, 1023) << 20;
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if (t.d > 0) {
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value |= 3UL << 30;
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}
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*tangent = value;
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}
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}
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}
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if (uses_colors || uses_uvs || uses_uv2s) {
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uint32_t attribute_stride = 0;
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if (uses_colors) {
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format |= ARRAY_FORMAT_COLOR;
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attribute_stride += sizeof(uint8_t) * 4;
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}
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uint32_t uv_offset = 0;
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if (uses_uvs) {
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format |= ARRAY_FORMAT_TEX_UV;
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uv_offset = attribute_stride;
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attribute_stride += sizeof(float) * 2;
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}
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uint32_t uv2_offset = 0;
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if (uses_uv2s) {
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format |= ARRAY_FORMAT_TEX_UV2;
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uv2_offset = attribute_stride;
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attribute_stride += sizeof(float) * 2;
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}
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surface_attribute_create_cache.resize(vertices.size() * attribute_stride);
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uint8_t *surface_attribute_ptr = surface_attribute_create_cache.ptrw();
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for (uint32_t i = 0; i < vertices.size(); i++) {
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if (uses_colors) {
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uint8_t *color8 = (uint8_t *)&surface_attribute_ptr[i * attribute_stride];
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color8[0] = uint8_t(CLAMP(colors[i].r * 255.0, 0.0, 255.0));
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color8[1] = uint8_t(CLAMP(colors[i].g * 255.0, 0.0, 255.0));
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color8[2] = uint8_t(CLAMP(colors[i].b * 255.0, 0.0, 255.0));
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color8[3] = uint8_t(CLAMP(colors[i].a * 255.0, 0.0, 255.0));
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}
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if (uses_uvs) {
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float *uv = (float *)&surface_attribute_ptr[i * attribute_stride + uv_offset];
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uv[0] = uvs[i].x;
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uv[1] = uvs[i].y;
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}
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if (uses_uv2s) {
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float *uv2 = (float *)&surface_attribute_ptr[i * attribute_stride + uv2_offset];
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uv2[0] = uv2s[i].x;
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uv2[1] = uv2s[i].y;
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}
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}
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}
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RS::SurfaceData sd;
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sd.primitive = RS::PrimitiveType(active_surface_data.primitive);
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sd.format = format;
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sd.vertex_data = surface_vertex_create_cache;
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if (uses_colors || uses_uvs || uses_uv2s) {
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sd.attribute_data = surface_attribute_create_cache;
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}
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sd.vertex_count = vertices.size();
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sd.aabb = aabb;
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if (active_surface_data.material.is_valid()) {
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sd.material = active_surface_data.material->get_rid();
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}
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RS::get_singleton()->mesh_add_surface(mesh, sd);
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active_surface_data.aabb = aabb;
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active_surface_data.format = format;
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active_surface_data.array_len = vertices.size();
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surfaces.push_back(active_surface_data);
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colors.clear();
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normals.clear();
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tangents.clear();
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uvs.clear();
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uv2s.clear();
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vertices.clear();
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uses_colors = false;
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uses_normals = false;
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uses_tangents = false;
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uses_uvs = false;
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uses_uv2s = false;
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surface_active = false;
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}
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void ImmediateMesh::clear_surfaces() {
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RS::get_singleton()->mesh_clear(mesh);
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surfaces.clear();
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surface_active = false;
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colors.clear();
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normals.clear();
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tangents.clear();
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uvs.clear();
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uv2s.clear();
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vertices.clear();
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uses_colors = false;
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uses_normals = false;
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uses_tangents = false;
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uses_uvs = false;
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uses_uv2s = false;
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}
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int ImmediateMesh::get_surface_count() const {
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return surfaces.size();
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}
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int ImmediateMesh::surface_get_array_len(int p_idx) const {
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ERR_FAIL_INDEX_V(p_idx, int(surfaces.size()), -1);
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return surfaces[p_idx].array_len;
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}
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int ImmediateMesh::surface_get_array_index_len(int p_idx) const {
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return 0;
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}
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Array ImmediateMesh::surface_get_arrays(int p_surface) const {
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ERR_FAIL_INDEX_V(p_surface, int(surfaces.size()), Array());
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return RS::get_singleton()->mesh_surface_get_arrays(mesh, p_surface);
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}
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TypedArray<Array> ImmediateMesh::surface_get_blend_shape_arrays(int p_surface) const {
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return TypedArray<Array>();
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}
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Dictionary ImmediateMesh::surface_get_lods(int p_surface) const {
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return Dictionary();
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}
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uint32_t ImmediateMesh::surface_get_format(int p_idx) const {
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ERR_FAIL_INDEX_V(p_idx, int(surfaces.size()), 0);
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return surfaces[p_idx].format;
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}
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Mesh::PrimitiveType ImmediateMesh::surface_get_primitive_type(int p_idx) const {
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ERR_FAIL_INDEX_V(p_idx, int(surfaces.size()), PRIMITIVE_MAX);
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return surfaces[p_idx].primitive;
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}
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void ImmediateMesh::surface_set_material(int p_idx, const Ref<Material> &p_material) {
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ERR_FAIL_INDEX(p_idx, int(surfaces.size()));
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surfaces[p_idx].material = p_material;
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RID mat;
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if (p_material.is_valid()) {
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mat = p_material->get_rid();
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}
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RS::get_singleton()->mesh_surface_set_material(mesh, p_idx, mat);
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}
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Ref<Material> ImmediateMesh::surface_get_material(int p_idx) const {
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ERR_FAIL_INDEX_V(p_idx, int(surfaces.size()), Ref<Material>());
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return surfaces[p_idx].material;
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}
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int ImmediateMesh::get_blend_shape_count() const {
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return 0;
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}
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StringName ImmediateMesh::get_blend_shape_name(int p_index) const {
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return StringName();
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}
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void ImmediateMesh::set_blend_shape_name(int p_index, const StringName &p_name) {
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}
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AABB ImmediateMesh::get_aabb() const {
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AABB aabb;
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for (uint32_t i = 0; i < surfaces.size(); i++) {
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if (i == 0) {
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aabb = surfaces[i].aabb;
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} else {
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aabb = aabb.merge(surfaces[i].aabb);
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}
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}
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return aabb;
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}
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void ImmediateMesh::_bind_methods() {
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ClassDB::bind_method(D_METHOD("surface_begin", "primitive", "material"), &ImmediateMesh::surface_begin, DEFVAL(Ref<Material>()));
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ClassDB::bind_method(D_METHOD("surface_set_color", "color"), &ImmediateMesh::surface_set_color);
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ClassDB::bind_method(D_METHOD("surface_set_normal", "normal"), &ImmediateMesh::surface_set_normal);
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ClassDB::bind_method(D_METHOD("surface_set_tangent", "tangent"), &ImmediateMesh::surface_set_tangent);
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ClassDB::bind_method(D_METHOD("surface_set_uv", "uv"), &ImmediateMesh::surface_set_uv);
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ClassDB::bind_method(D_METHOD("surface_set_uv2", "uv2"), &ImmediateMesh::surface_set_uv2);
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ClassDB::bind_method(D_METHOD("surface_add_vertex", "vertex"), &ImmediateMesh::surface_add_vertex);
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ClassDB::bind_method(D_METHOD("surface_add_vertex_2d", "vertex"), &ImmediateMesh::surface_add_vertex_2d);
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ClassDB::bind_method(D_METHOD("surface_end"), &ImmediateMesh::surface_end);
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ClassDB::bind_method(D_METHOD("clear_surfaces"), &ImmediateMesh::clear_surfaces);
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}
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RID ImmediateMesh::get_rid() const {
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return mesh;
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}
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ImmediateMesh::ImmediateMesh() {
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mesh = RS::get_singleton()->mesh_create();
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}
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ImmediateMesh::~ImmediateMesh() {
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RS::get_singleton()->free(mesh);
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}
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