51ed3aef63
This allows Godot to automatically compress meshes to save a lot of bandwidth. In general, this requires no interaction from the user and should result in no noticable quality loss. This scheme is not backwards compatible, so we have provided an upgrade mechanism, and a mesh versioning mechanism. Existing meshes can still be used as a result, but users can get a performance boost by reimporting assets.
236 lines
11 KiB
C++
236 lines
11 KiB
C++
/**************************************************************************/
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/* surface_tool.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) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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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 SURFACE_TOOL_H
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#define SURFACE_TOOL_H
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#include "core/templates/local_vector.h"
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#include "scene/resources/mesh.h"
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#include "thirdparty/misc/mikktspace.h"
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class SurfaceTool : public RefCounted {
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GDCLASS(SurfaceTool, RefCounted);
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static const uint32_t custom_mask[RS::ARRAY_CUSTOM_COUNT];
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static const uint32_t custom_shift[RS::ARRAY_CUSTOM_COUNT];
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public:
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struct Vertex {
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Vector3 vertex;
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Color color;
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Vector3 normal; // normal, binormal, tangent
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Vector3 binormal;
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Vector3 tangent;
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Vector2 uv;
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Vector2 uv2;
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Vector<int> bones;
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Vector<float> weights;
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Color custom[RS::ARRAY_CUSTOM_COUNT];
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uint32_t smooth_group = 0;
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bool operator==(const Vertex &p_vertex) const;
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Vertex() {}
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};
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enum CustomFormat {
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CUSTOM_RGBA8_UNORM = RS::ARRAY_CUSTOM_RGBA8_UNORM,
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CUSTOM_RGBA8_SNORM = RS::ARRAY_CUSTOM_RGBA8_SNORM,
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CUSTOM_RG_HALF = RS::ARRAY_CUSTOM_RG_HALF,
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CUSTOM_RGBA_HALF = RS::ARRAY_CUSTOM_RGBA_HALF,
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CUSTOM_R_FLOAT = RS::ARRAY_CUSTOM_R_FLOAT,
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CUSTOM_RG_FLOAT = RS::ARRAY_CUSTOM_RG_FLOAT,
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CUSTOM_RGB_FLOAT = RS::ARRAY_CUSTOM_RGB_FLOAT,
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CUSTOM_RGBA_FLOAT = RS::ARRAY_CUSTOM_RGBA_FLOAT,
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CUSTOM_MAX = RS::ARRAY_CUSTOM_MAX
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};
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enum SkinWeightCount {
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SKIN_4_WEIGHTS,
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SKIN_8_WEIGHTS
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};
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enum {
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/* Do not move vertices that are located on the topological border (vertices on triangle edges that don't have a paired triangle). Useful for simplifying portions of the larger mesh. */
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SIMPLIFY_LOCK_BORDER = 1 << 0, // From meshopt_SimplifyLockBorder
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};
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typedef void (*OptimizeVertexCacheFunc)(unsigned int *destination, const unsigned int *indices, size_t index_count, size_t vertex_count);
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static OptimizeVertexCacheFunc optimize_vertex_cache_func;
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typedef size_t (*SimplifyFunc)(unsigned int *destination, const unsigned int *indices, size_t index_count, const float *vertex_positions, size_t vertex_count, size_t vertex_positions_stride, size_t target_index_count, float target_error, unsigned int options, float *r_error);
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static SimplifyFunc simplify_func;
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typedef size_t (*SimplifyWithAttribFunc)(unsigned int *destination, const unsigned int *indices, size_t index_count, const float *vertex_data, size_t vertex_count, size_t vertex_stride, size_t target_index_count, float target_error, unsigned int options, float *result_error, const float *attributes, const float *attribute_weights, size_t attribute_count);
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static SimplifyWithAttribFunc simplify_with_attrib_func;
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typedef float (*SimplifyScaleFunc)(const float *vertex_positions, size_t vertex_count, size_t vertex_positions_stride);
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static SimplifyScaleFunc simplify_scale_func;
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typedef size_t (*SimplifySloppyFunc)(unsigned int *destination, const unsigned int *indices, size_t index_count, const float *vertex_positions_data, size_t vertex_count, size_t vertex_positions_stride, size_t target_index_count, float target_error, float *out_result_error);
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static SimplifySloppyFunc simplify_sloppy_func;
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typedef size_t (*GenerateRemapFunc)(unsigned int *destination, const unsigned int *indices, size_t index_count, const void *vertices, size_t vertex_count, size_t vertex_size);
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static GenerateRemapFunc generate_remap_func;
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typedef void (*RemapVertexFunc)(void *destination, const void *vertices, size_t vertex_count, size_t vertex_size, const unsigned int *remap);
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static RemapVertexFunc remap_vertex_func;
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typedef void (*RemapIndexFunc)(unsigned int *destination, const unsigned int *indices, size_t index_count, const unsigned int *remap);
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static RemapIndexFunc remap_index_func;
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static void strip_mesh_arrays(PackedVector3Array &r_vertices, PackedInt32Array &r_indices);
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private:
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struct VertexHasher {
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static _FORCE_INLINE_ uint32_t hash(const Vertex &p_vtx);
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};
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struct SmoothGroupVertex {
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Vector3 vertex;
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uint32_t smooth_group = 0;
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bool operator==(const SmoothGroupVertex &p_vertex) const;
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SmoothGroupVertex(const Vertex &p_vertex) {
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vertex = p_vertex.vertex;
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smooth_group = p_vertex.smooth_group;
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};
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};
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struct SmoothGroupVertexHasher {
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static _FORCE_INLINE_ uint32_t hash(const SmoothGroupVertex &p_vtx);
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};
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struct TriangleHasher {
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static _FORCE_INLINE_ uint32_t hash(const int *p_triangle);
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static _FORCE_INLINE_ bool compare(const int *p_lhs, const int *p_rhs);
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};
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struct WeightSort {
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int index = 0;
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float weight = 0.0;
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bool operator<(const WeightSort &p_right) const {
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return weight < p_right.weight;
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}
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};
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bool begun = false;
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bool first = false;
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Mesh::PrimitiveType primitive = Mesh::PRIMITIVE_LINES;
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uint64_t format = 0;
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Ref<Material> material;
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//arrays
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LocalVector<Vertex> vertex_array;
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LocalVector<int> index_array;
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//memory
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Color last_color;
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Vector3 last_normal;
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Vector2 last_uv;
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Vector2 last_uv2;
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Vector<int> last_bones;
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Vector<float> last_weights;
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Plane last_tangent;
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uint32_t last_smooth_group = 0;
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SkinWeightCount skin_weights = SKIN_4_WEIGHTS;
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Color last_custom[RS::ARRAY_CUSTOM_COUNT];
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CustomFormat last_custom_format[RS::ARRAY_CUSTOM_COUNT];
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void _create_list_from_arrays(Array arr, LocalVector<Vertex> *r_vertex, LocalVector<int> *r_index, uint64_t &lformat);
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void _create_list(const Ref<Mesh> &p_existing, int p_surface, LocalVector<Vertex> *r_vertex, LocalVector<int> *r_index, uint64_t &lformat);
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//mikktspace callbacks
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static int mikktGetNumFaces(const SMikkTSpaceContext *pContext);
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static int mikktGetNumVerticesOfFace(const SMikkTSpaceContext *pContext, const int iFace);
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static void mikktGetPosition(const SMikkTSpaceContext *pContext, float fvPosOut[], const int iFace, const int iVert);
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static void mikktGetNormal(const SMikkTSpaceContext *pContext, float fvNormOut[], const int iFace, const int iVert);
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static void mikktGetTexCoord(const SMikkTSpaceContext *pContext, float fvTexcOut[], const int iFace, const int iVert);
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static void mikktSetTSpaceDefault(const SMikkTSpaceContext *pContext, const float fvTangent[], const float fvBiTangent[], const float fMagS, const float fMagT,
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const tbool bIsOrientationPreserving, const int iFace, const int iVert);
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void _add_triangle_fan(const Vector<Vector3> &p_vertices, const Vector<Vector2> &p_uvs = Vector<Vector2>(), const Vector<Color> &p_colors = Vector<Color>(), const Vector<Vector2> &p_uv2s = Vector<Vector2>(), const Vector<Vector3> &p_normals = Vector<Vector3>(), const TypedArray<Plane> &p_tangents = TypedArray<Plane>());
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protected:
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static void _bind_methods();
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public:
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void set_skin_weight_count(SkinWeightCount p_weights);
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SkinWeightCount get_skin_weight_count() const;
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void set_custom_format(int p_channel_index, CustomFormat p_format);
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CustomFormat get_custom_format(int p_channel_index) const;
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Mesh::PrimitiveType get_primitive_type() const;
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void begin(Mesh::PrimitiveType p_primitive);
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void set_color(Color p_color);
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void set_normal(const Vector3 &p_normal);
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void set_tangent(const Plane &p_tangent);
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void set_uv(const Vector2 &p_uv);
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void set_uv2(const Vector2 &p_uv2);
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void set_custom(int p_channel_index, const Color &p_custom);
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void set_bones(const Vector<int> &p_bones);
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void set_weights(const Vector<float> &p_weights);
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void set_smooth_group(uint32_t p_group);
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void add_vertex(const Vector3 &p_vertex);
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void add_triangle_fan(const Vector<Vector3> &p_vertices, const Vector<Vector2> &p_uvs = Vector<Vector2>(), const Vector<Color> &p_colors = Vector<Color>(), const Vector<Vector2> &p_uv2s = Vector<Vector2>(), const Vector<Vector3> &p_normals = Vector<Vector3>(), const Vector<Plane> &p_tangents = Vector<Plane>());
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void add_index(int p_index);
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void index();
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void deindex();
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void generate_normals(bool p_flip = false);
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void generate_tangents();
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void optimize_indices_for_cache();
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AABB get_aabb() const;
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Vector<int> generate_lod(float p_threshold, int p_target_index_count = 3);
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void set_material(const Ref<Material> &p_material);
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Ref<Material> get_material() const;
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void clear();
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LocalVector<Vertex> &get_vertex_array() { return vertex_array; }
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void create_from_triangle_arrays(const Array &p_arrays);
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static void create_vertex_array_from_triangle_arrays(const Array &p_arrays, LocalVector<Vertex> &ret, uint64_t *r_format = nullptr);
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Array commit_to_arrays();
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void create_from(const Ref<Mesh> &p_existing, int p_surface);
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void create_from_blend_shape(const Ref<Mesh> &p_existing, int p_surface, const String &p_blend_shape_name);
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void append_from(const Ref<Mesh> &p_existing, int p_surface, const Transform3D &p_xform);
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Ref<ArrayMesh> commit(const Ref<ArrayMesh> &p_existing = Ref<ArrayMesh>(), uint64_t p_compress_flags = 0);
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SurfaceTool();
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};
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VARIANT_ENUM_CAST(SurfaceTool::CustomFormat)
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VARIANT_ENUM_CAST(SurfaceTool::SkinWeightCount)
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#endif // SURFACE_TOOL_H
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