259 lines
9.1 KiB
C++
259 lines
9.1 KiB
C++
/*************************************************************************/
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/* lightmapper_rd.h */
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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) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 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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#ifndef LIGHTMAPPER_RD_H
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#define LIGHTMAPPER_RD_H
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#include "core/templates/local_vector.h"
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#include "scene/3d/lightmapper.h"
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#include "scene/resources/mesh.h"
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#include "servers/rendering/rendering_device.h"
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class LightmapperRD : public Lightmapper {
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GDCLASS(LightmapperRD, Lightmapper)
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struct MeshInstance {
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MeshData data;
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int slice = 0;
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Vector2i offset;
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};
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struct Light {
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float position[3];
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uint32_t type = LIGHT_TYPE_DIRECTIONAL;
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float direction[3];
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float energy;
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float color[3];
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float size;
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float range;
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float attenuation;
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float spot_angle;
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float spot_attenuation;
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uint32_t static_bake;
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uint32_t pad[3];
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bool operator<(const Light &p_light) const {
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return type < p_light.type;
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}
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};
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struct Vertex {
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float position[3];
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float normal_z;
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float uv[2];
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float normal_xy[2];
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bool operator==(const Vertex &p_vtx) const {
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return (position[0] == p_vtx.position[0]) &&
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(position[1] == p_vtx.position[1]) &&
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(position[2] == p_vtx.position[2]) &&
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(uv[0] == p_vtx.uv[0]) &&
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(uv[1] == p_vtx.uv[1]) &&
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(normal_xy[0] == p_vtx.normal_xy[0]) &&
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(normal_xy[1] == p_vtx.normal_xy[1]) &&
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(normal_z == p_vtx.normal_z);
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}
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};
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struct Edge {
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Vector3 a;
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Vector3 b;
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Vector3 na;
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Vector3 nb;
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bool operator==(const Edge &p_seam) const {
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return a == p_seam.a && b == p_seam.b && na == p_seam.na && nb == p_seam.nb;
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}
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Edge() {
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}
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Edge(const Vector3 &p_a, const Vector3 &p_b, const Vector3 &p_na, const Vector3 &p_nb) {
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a = p_a;
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b = p_b;
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na = p_na;
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nb = p_nb;
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}
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};
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struct Probe {
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float position[4];
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};
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Vector<Probe> probe_positions;
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struct EdgeHash {
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_FORCE_INLINE_ static uint32_t hash(const Edge &p_edge) {
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uint32_t h = hash_djb2_one_float(p_edge.a.x);
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h = hash_djb2_one_float(p_edge.a.y, h);
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h = hash_djb2_one_float(p_edge.a.z, h);
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h = hash_djb2_one_float(p_edge.b.x, h);
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h = hash_djb2_one_float(p_edge.b.y, h);
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h = hash_djb2_one_float(p_edge.b.z, h);
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return h;
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}
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};
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struct EdgeUV2 {
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Vector2 a;
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Vector2 b;
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Vector2i indices;
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bool operator==(const EdgeUV2 &p_uv2) const {
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return a == p_uv2.a && b == p_uv2.b;
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}
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bool seam_found = false;
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EdgeUV2(Vector2 p_a, Vector2 p_b, Vector2i p_indices) {
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a = p_a;
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b = p_b;
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indices = p_indices;
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}
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EdgeUV2() {}
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};
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struct Seam {
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Vector2i a;
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Vector2i b;
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uint32_t slice;
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bool operator<(const Seam &p_seam) const {
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return slice < p_seam.slice;
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}
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};
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struct VertexHash {
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_FORCE_INLINE_ static uint32_t hash(const Vertex &p_vtx) {
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uint32_t h = hash_djb2_one_float(p_vtx.position[0]);
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h = hash_djb2_one_float(p_vtx.position[1], h);
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h = hash_djb2_one_float(p_vtx.position[2], h);
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h = hash_djb2_one_float(p_vtx.uv[0], h);
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h = hash_djb2_one_float(p_vtx.uv[1], h);
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h = hash_djb2_one_float(p_vtx.normal_xy[0], h);
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h = hash_djb2_one_float(p_vtx.normal_xy[1], h);
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h = hash_djb2_one_float(p_vtx.normal_z, h);
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return h;
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}
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};
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struct Box {
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float min_bounds[3];
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float pad0;
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float max_bounds[3];
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float pad1;
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};
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struct Triangle {
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uint32_t indices[3];
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uint32_t slice;
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bool operator<(const Triangle &p_triangle) const {
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return slice < p_triangle.slice;
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}
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};
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Vector<MeshInstance> mesh_instances;
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Vector<Light> lights;
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struct TriangleSort {
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uint32_t cell_index;
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uint32_t triangle_index;
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bool operator<(const TriangleSort &p_triangle_sort) const {
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return cell_index < p_triangle_sort.cell_index; //sorting by triangle index in this case makes no sense
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}
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};
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void _plot_triangle_into_triangle_index_list(int p_size, const Vector3i &p_ofs, const AABB &p_bounds, const Vector3 p_points[], uint32_t p_triangle_index, LocalVector<TriangleSort> &triangles, uint32_t p_grid_size);
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struct RasterPushConstant {
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float atlas_size[2];
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float uv_offset[2];
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float to_cell_size[3];
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uint32_t base_triangle;
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float to_cell_offset[3];
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float bias;
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int32_t grid_size[3];
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uint32_t pad2;
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};
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struct RasterSeamsPushConstant {
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uint32_t base_index;
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uint32_t slice;
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float uv_offset[2];
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uint32_t debug;
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float blend;
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uint32_t pad[2];
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};
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struct PushConstant {
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int32_t atlas_size[2];
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uint32_t ray_count;
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uint32_t ray_to;
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float world_size[3];
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float bias;
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float to_cell_offset[3];
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uint32_t ray_from;
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float to_cell_size[3];
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uint32_t light_count;
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int32_t grid_size;
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int32_t atlas_slice;
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int32_t region_ofs[2];
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float environment_xform[12];
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};
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Vector<Ref<Image>> bake_textures;
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Vector<Color> probe_values;
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BakeError _blit_meshes_into_atlas(int p_max_texture_size, Vector<Ref<Image>> &albedo_images, Vector<Ref<Image>> &emission_images, AABB &bounds, Size2i &atlas_size, int &atlas_slices, BakeStepFunc p_step_function, void *p_bake_userdata);
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void _create_acceleration_structures(RenderingDevice *rd, Size2i atlas_size, int atlas_slices, AABB &bounds, int grid_size, Vector<Probe> &probe_positions, GenerateProbes p_generate_probes, Vector<int> &slice_triangle_count, Vector<int> &slice_seam_count, RID &vertex_buffer, RID &triangle_buffer, RID &box_buffer, RID &lights_buffer, RID &triangle_cell_indices_buffer, RID &probe_positions_buffer, RID &grid_texture, RID &grid_texture_sdf, RID &seams_buffer, BakeStepFunc p_step_function, void *p_bake_userdata);
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void _raster_geometry(RenderingDevice *rd, Size2i atlas_size, int atlas_slices, int grid_size, AABB bounds, float p_bias, Vector<int> slice_triangle_count, RID position_tex, RID unocclude_tex, RID normal_tex, RID raster_depth_buffer, RID rasterize_shader, RID raster_base_uniform);
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public:
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virtual void add_mesh(const MeshData &p_mesh) override;
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virtual void add_directional_light(bool p_static, const Vector3 &p_direction, const Color &p_color, float p_energy, float p_angular_distance) override;
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virtual void add_omni_light(bool p_static, const Vector3 &p_position, const Color &p_color, float p_energy, float p_range, float p_attenuation, float p_size) override;
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virtual void add_spot_light(bool p_static, const Vector3 &p_position, const Vector3 p_direction, const Color &p_color, float p_energy, float p_range, float p_attenuation, float p_spot_angle, float p_spot_attenuation, float p_size) override;
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virtual void add_probe(const Vector3 &p_position) override;
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virtual BakeError bake(BakeQuality p_quality, bool p_use_denoiser, int p_bounces, float p_bias, int p_max_texture_size, bool p_bake_sh, GenerateProbes p_generate_probes, const Ref<Image> &p_environment_panorama, const Basis &p_environment_transform, BakeStepFunc p_step_function = nullptr, void *p_bake_userdata = nullptr) override;
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int get_bake_texture_count() const override;
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Ref<Image> get_bake_texture(int p_index) const override;
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int get_bake_mesh_count() const override;
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Variant get_bake_mesh_userdata(int p_index) const override;
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Rect2 get_bake_mesh_uv_scale(int p_index) const override;
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int get_bake_mesh_texture_slice(int p_index) const override;
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int get_bake_probe_count() const override;
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Vector3 get_bake_probe_point(int p_probe) const override;
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Vector<Color> get_bake_probe_sh(int p_probe) const override;
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LightmapperRD();
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};
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#endif // LIGHTMAPPER_H
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