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godot/drivers/gles3/storage/mesh_storage.h

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/**************************************************************************/
/* mesh_storage.h */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#ifndef MESH_STORAGE_GLES3_H
#define MESH_STORAGE_GLES3_H
#ifdef GLES3_ENABLED
#include "core/templates/local_vector.h"
#include "core/templates/rid_owner.h"
#include "core/templates/self_list.h"
#include "drivers/gles3/shaders/skeleton.glsl.gen.h"
#include "servers/rendering/storage/mesh_storage.h"
#include "servers/rendering/storage/utilities.h"
#include "platform_gl.h"
namespace GLES3 {
struct MeshInstance;
struct Mesh {
struct Surface {
struct Attrib {
bool enabled;
bool integer;
GLint size;
GLenum type;
GLboolean normalized;
GLsizei stride;
uint32_t offset;
};
RS::PrimitiveType primitive = RS::PRIMITIVE_POINTS;
uint64_t format = 0;
GLuint vertex_buffer = 0;
GLuint attribute_buffer = 0;
GLuint skin_buffer = 0;
uint32_t vertex_count = 0;
uint32_t vertex_buffer_size = 0;
uint32_t attribute_buffer_size = 0;
uint32_t skin_buffer_size = 0;
// Cache vertex arrays so they can be created
struct Version {
uint32_t input_mask = 0;
GLuint vertex_array = 0;
Attrib attribs[RS::ARRAY_MAX];
};
SpinLock version_lock; //needed to access versions
Version *versions = nullptr; //allocated on demand
uint32_t version_count = 0;
GLuint index_buffer = 0;
uint32_t index_count = 0;
uint32_t index_buffer_size = 0;
struct Wireframe {
GLuint index_buffer = 0;
uint32_t index_count = 0;
uint32_t index_buffer_size = 0;
};
Wireframe *wireframe = nullptr;
struct LOD {
float edge_length = 0.0;
uint32_t index_count = 0;
uint32_t index_buffer_size = 0;
GLuint index_buffer = 0;
};
LOD *lods = nullptr;
uint32_t lod_count = 0;
AABB aabb;
Vector<AABB> bone_aabbs;
// Transform used in runtime bone AABBs compute.
// As bone AABBs are saved in Mesh space, but bones animation is in Skeleton space.
Transform3D mesh_to_skeleton_xform;
Vector4 uv_scale;
struct BlendShape {
GLuint vertex_buffer = 0;
GLuint vertex_array = 0;
};
BlendShape *blend_shapes = nullptr;
GLuint skeleton_vertex_array = 0;
RID material;
};
uint32_t blend_shape_count = 0;
RS::BlendShapeMode blend_shape_mode = RS::BLEND_SHAPE_MODE_NORMALIZED;
Surface **surfaces = nullptr;
uint32_t surface_count = 0;
bool has_bone_weights = false;
AABB aabb;
AABB custom_aabb;
uint64_t skeleton_aabb_version = 0;
Vector<RID> material_cache;
List<MeshInstance *> instances;
RID shadow_mesh;
HashSet<Mesh *> shadow_owners;
String path;
Dependency dependency;
};
/* Mesh Instance */
struct MeshInstance {
Mesh *mesh = nullptr;
RID skeleton;
struct Surface {
GLuint vertex_buffers[2] = { 0, 0 };
GLuint vertex_arrays[2] = { 0, 0 };
GLuint vertex_buffer = 0;
int vertex_stride_cache = 0;
int vertex_size_cache = 0;
int vertex_normal_offset_cache = 0;
int vertex_tangent_offset_cache = 0;
uint64_t format_cache = 0;
Mesh::Surface::Version *versions = nullptr; //allocated on demand
uint32_t version_count = 0;
};
LocalVector<Surface> surfaces;
LocalVector<float> blend_weights;
List<MeshInstance *>::Element *I = nullptr; //used to erase itself
uint64_t skeleton_version = 0;
bool dirty = false;
bool weights_dirty = false;
SelfList<MeshInstance> weight_update_list;
SelfList<MeshInstance> array_update_list;
Transform2D canvas_item_transform_2d;
MeshInstance() :
weight_update_list(this), array_update_list(this) {}
};
/* MultiMesh */
struct MultiMesh {
RID mesh;
int instances = 0;
RS::MultimeshTransformFormat xform_format = RS::MULTIMESH_TRANSFORM_3D;
bool uses_colors = false;
bool uses_custom_data = false;
int visible_instances = -1;
AABB aabb;
AABB custom_aabb;
bool aabb_dirty = false;
bool buffer_set = false;
uint32_t stride_cache = 0;
uint32_t color_offset_cache = 0;
uint32_t custom_data_offset_cache = 0;
Vector<float> data_cache; //used if individual setting is used
bool *data_cache_dirty_regions = nullptr;
uint32_t data_cache_used_dirty_regions = 0;
GLuint buffer = 0;
bool dirty = false;
MultiMesh *dirty_list = nullptr;
RendererMeshStorage::MultiMeshInterpolator interpolator;
Dependency dependency;
};
struct Skeleton {
bool use_2d = false;
int size = 0;
int height = 0;
Vector<float> data;
bool dirty = false;
Skeleton *dirty_list = nullptr;
Transform2D base_transform_2d;
GLuint transforms_texture = 0;
uint64_t version = 1;
Dependency dependency;
};
class MeshStorage : public RendererMeshStorage {
private:
static MeshStorage *singleton;
struct {
SkeletonShaderGLES3 shader;
RID shader_version;
} skeleton_shader;
/* Mesh */
mutable RID_Owner<Mesh, true> mesh_owner;
void _mesh_surface_generate_version_for_input_mask(Mesh::Surface::Version &v, Mesh::Surface *s, uint64_t p_input_mask, MeshInstance::Surface *mis = nullptr);
/* Mesh Instance API */
mutable RID_Owner<MeshInstance> mesh_instance_owner;
void _mesh_instance_clear(MeshInstance *mi);
void _mesh_instance_add_surface(MeshInstance *mi, Mesh *mesh, uint32_t p_surface);
void _blend_shape_bind_mesh_instance_buffer(MeshInstance *p_mi, uint32_t p_surface);
SelfList<MeshInstance>::List dirty_mesh_instance_weights;
SelfList<MeshInstance>::List dirty_mesh_instance_arrays;
/* MultiMesh */
mutable RID_Owner<MultiMesh, true> multimesh_owner;
MultiMesh *multimesh_dirty_list = nullptr;
_FORCE_INLINE_ void _multimesh_make_local(MultiMesh *multimesh) const;
_FORCE_INLINE_ void _multimesh_mark_dirty(MultiMesh *multimesh, int p_index, bool p_aabb);
_FORCE_INLINE_ void _multimesh_mark_all_dirty(MultiMesh *multimesh, bool p_data, bool p_aabb);
_FORCE_INLINE_ void _multimesh_re_create_aabb(MultiMesh *multimesh, const float *p_data, int p_instances);
/* Skeleton */
mutable RID_Owner<Skeleton, true> skeleton_owner;
_FORCE_INLINE_ void _skeleton_make_dirty(Skeleton *skeleton);
void _compute_skeleton(MeshInstance *p_mi, Skeleton *p_sk, uint32_t p_surface);
Skeleton *skeleton_dirty_list = nullptr;
public:
static MeshStorage *get_singleton();
MeshStorage();
virtual ~MeshStorage();
/* MESH API */
Mesh *get_mesh(RID p_rid) { return mesh_owner.get_or_null(p_rid); };
bool owns_mesh(RID p_rid) { return mesh_owner.owns(p_rid); };
virtual RID mesh_allocate() override;
virtual void mesh_initialize(RID p_rid) override;
virtual void mesh_free(RID p_rid) override;
virtual void mesh_set_blend_shape_count(RID p_mesh, int p_blend_shape_count) override;
virtual bool mesh_needs_instance(RID p_mesh, bool p_has_skeleton) override;
virtual void mesh_add_surface(RID p_mesh, const RS::SurfaceData &p_surface) override;
virtual int mesh_get_blend_shape_count(RID p_mesh) const override;
virtual void mesh_set_blend_shape_mode(RID p_mesh, RS::BlendShapeMode p_mode) override;
virtual RS::BlendShapeMode mesh_get_blend_shape_mode(RID p_mesh) const override;
virtual void mesh_surface_update_vertex_region(RID p_mesh, int p_surface, int p_offset, const Vector<uint8_t> &p_data) override;
virtual void mesh_surface_update_attribute_region(RID p_mesh, int p_surface, int p_offset, const Vector<uint8_t> &p_data) override;
virtual void mesh_surface_update_skin_region(RID p_mesh, int p_surface, int p_offset, const Vector<uint8_t> &p_data) override;
virtual void mesh_surface_set_material(RID p_mesh, int p_surface, RID p_material) override;
virtual RID mesh_surface_get_material(RID p_mesh, int p_surface) const override;
virtual RS::SurfaceData mesh_get_surface(RID p_mesh, int p_surface) const override;
virtual int mesh_get_surface_count(RID p_mesh) const override;
virtual void mesh_set_custom_aabb(RID p_mesh, const AABB &p_aabb) override;
virtual AABB mesh_get_custom_aabb(RID p_mesh) const override;
virtual AABB mesh_get_aabb(RID p_mesh, RID p_skeleton = RID()) override;
virtual void mesh_set_path(RID p_mesh, const String &p_path) override;
virtual String mesh_get_path(RID p_mesh) const override;
virtual void mesh_set_shadow_mesh(RID p_mesh, RID p_shadow_mesh) override;
virtual void mesh_clear(RID p_mesh) override;
_FORCE_INLINE_ const RID *mesh_get_surface_count_and_materials(RID p_mesh, uint32_t &r_surface_count) {
Mesh *mesh = mesh_owner.get_or_null(p_mesh);
ERR_FAIL_NULL_V(mesh, nullptr);
r_surface_count = mesh->surface_count;
if (r_surface_count == 0) {
return nullptr;
}
if (mesh->material_cache.is_empty()) {
mesh->material_cache.resize(mesh->surface_count);
for (uint32_t i = 0; i < r_surface_count; i++) {
mesh->material_cache.write[i] = mesh->surfaces[i]->material;
}
}
return mesh->material_cache.ptr();
}
_FORCE_INLINE_ void *mesh_get_surface(RID p_mesh, uint32_t p_surface_index) {
Mesh *mesh = mesh_owner.get_or_null(p_mesh);
ERR_FAIL_NULL_V(mesh, nullptr);
ERR_FAIL_UNSIGNED_INDEX_V(p_surface_index, mesh->surface_count, nullptr);
return mesh->surfaces[p_surface_index];
}
_FORCE_INLINE_ RID mesh_get_shadow_mesh(RID p_mesh) {
Mesh *mesh = mesh_owner.get_or_null(p_mesh);
ERR_FAIL_NULL_V(mesh, RID());
return mesh->shadow_mesh;
}
_FORCE_INLINE_ RS::PrimitiveType mesh_surface_get_primitive(void *p_surface) {
Mesh::Surface *surface = reinterpret_cast<Mesh::Surface *>(p_surface);
return surface->primitive;
}
_FORCE_INLINE_ bool mesh_surface_has_lod(void *p_surface) const {
Mesh::Surface *s = reinterpret_cast<Mesh::Surface *>(p_surface);
return s->lod_count > 0;
}
_FORCE_INLINE_ uint32_t mesh_surface_get_vertices_drawn_count(void *p_surface) const {
Mesh::Surface *s = reinterpret_cast<Mesh::Surface *>(p_surface);
return s->index_count ? s->index_count : s->vertex_count;
}
_FORCE_INLINE_ uint32_t mesh_surface_get_lod(void *p_surface, float p_model_scale, float p_distance_threshold, float p_mesh_lod_threshold, uint32_t &r_index_count) const {
Mesh::Surface *s = reinterpret_cast<Mesh::Surface *>(p_surface);
ERR_FAIL_NULL_V(s, 0);
int32_t current_lod = -1;
r_index_count = s->index_count;
for (uint32_t i = 0; i < s->lod_count; i++) {
float screen_size = s->lods[i].edge_length * p_model_scale / p_distance_threshold;
if (screen_size > p_mesh_lod_threshold) {
break;
}
current_lod = i;
}
if (current_lod == -1) {
return 0;
} else {
r_index_count = s->lods[current_lod].index_count;
return current_lod + 1;
}
}
_FORCE_INLINE_ GLuint mesh_surface_get_index_buffer(void *p_surface, uint32_t p_lod) const {
Mesh::Surface *s = reinterpret_cast<Mesh::Surface *>(p_surface);
if (p_lod == 0) {
return s->index_buffer;
} else {
return s->lods[p_lod - 1].index_buffer;
}
}
_FORCE_INLINE_ GLuint mesh_surface_get_index_buffer_wireframe(void *p_surface) const {
Mesh::Surface *s = reinterpret_cast<Mesh::Surface *>(p_surface);
if (s->wireframe) {
return s->wireframe->index_buffer;
}
return 0;
}
_FORCE_INLINE_ GLenum mesh_surface_get_index_type(void *p_surface) const {
Mesh::Surface *s = reinterpret_cast<Mesh::Surface *>(p_surface);
return (s->vertex_count <= 65536 && s->vertex_count > 0) ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT;
}
// Use this to cache Vertex Array Objects so they are only generated once
_FORCE_INLINE_ void mesh_surface_get_vertex_arrays_and_format(void *p_surface, uint64_t p_input_mask, GLuint &r_vertex_array_gl) {
Mesh::Surface *s = reinterpret_cast<Mesh::Surface *>(p_surface);
s->version_lock.lock();
// There will never be more than 3 or 4 versions, so iterating is the fastest way.
for (uint32_t i = 0; i < s->version_count; i++) {
if (s->versions[i].input_mask != p_input_mask) {
continue;
}
// We have this version, hooray.
r_vertex_array_gl = s->versions[i].vertex_array;
s->version_lock.unlock();
return;
}
uint32_t version = s->version_count;
s->version_count++;
s->versions = (Mesh::Surface::Version *)memrealloc(s->versions, sizeof(Mesh::Surface::Version) * s->version_count);
_mesh_surface_generate_version_for_input_mask(s->versions[version], s, p_input_mask);
r_vertex_array_gl = s->versions[version].vertex_array;
s->version_lock.unlock();
}
/* MESH INSTANCE API */
MeshInstance *get_mesh_instance(RID p_rid) { return mesh_instance_owner.get_or_null(p_rid); };
bool owns_mesh_instance(RID p_rid) { return mesh_instance_owner.owns(p_rid); };
virtual RID mesh_instance_create(RID p_base) override;
virtual void mesh_instance_free(RID p_rid) override;
virtual void mesh_instance_set_skeleton(RID p_mesh_instance, RID p_skeleton) override;
virtual void mesh_instance_set_blend_shape_weight(RID p_mesh_instance, int p_shape, float p_weight) override;
virtual void mesh_instance_check_for_update(RID p_mesh_instance) override;
virtual void mesh_instance_set_canvas_item_transform(RID p_mesh_instance, const Transform2D &p_transform) override;
virtual void update_mesh_instances() override;
// TODO: considering hashing versions with multimesh buffer RID.
// Doing so would allow us to avoid specifying multimesh buffer pointers every frame and may improve performance.
_FORCE_INLINE_ void mesh_instance_surface_get_vertex_arrays_and_format(RID p_mesh_instance, uint32_t p_surface_index, uint64_t p_input_mask, GLuint &r_vertex_array_gl) {
MeshInstance *mi = mesh_instance_owner.get_or_null(p_mesh_instance);
ERR_FAIL_NULL(mi);
Mesh *mesh = mi->mesh;
ERR_FAIL_UNSIGNED_INDEX(p_surface_index, mesh->surface_count);
MeshInstance::Surface *mis = &mi->surfaces[p_surface_index];
Mesh::Surface *s = mesh->surfaces[p_surface_index];
s->version_lock.lock();
//there will never be more than, at much, 3 or 4 versions, so iterating is the fastest way
for (uint32_t i = 0; i < mis->version_count; i++) {
if (mis->versions[i].input_mask != p_input_mask) {
continue;
}
//we have this version, hooray
r_vertex_array_gl = mis->versions[i].vertex_array;
s->version_lock.unlock();
return;
}
uint32_t version = mis->version_count;
mis->version_count++;
mis->versions = (Mesh::Surface::Version *)memrealloc(mis->versions, sizeof(Mesh::Surface::Version) * mis->version_count);
_mesh_surface_generate_version_for_input_mask(mis->versions[version], s, p_input_mask, mis);
r_vertex_array_gl = mis->versions[version].vertex_array;
s->version_lock.unlock();
}
/* MULTIMESH API */
MultiMesh *get_multimesh(RID p_rid) { return multimesh_owner.get_or_null(p_rid); };
bool owns_multimesh(RID p_rid) { return multimesh_owner.owns(p_rid); };
virtual RID _multimesh_allocate() override;
virtual void _multimesh_initialize(RID p_rid) override;
virtual void _multimesh_free(RID p_rid) override;
virtual void _multimesh_allocate_data(RID p_multimesh, int p_instances, RS::MultimeshTransformFormat p_transform_format, bool p_use_colors = false, bool p_use_custom_data = false) override;
virtual int _multimesh_get_instance_count(RID p_multimesh) const override;
virtual void _multimesh_set_mesh(RID p_multimesh, RID p_mesh) override;
virtual void _multimesh_instance_set_transform(RID p_multimesh, int p_index, const Transform3D &p_transform) override;
virtual void _multimesh_instance_set_transform_2d(RID p_multimesh, int p_index, const Transform2D &p_transform) override;
virtual void _multimesh_instance_set_color(RID p_multimesh, int p_index, const Color &p_color) override;
virtual void _multimesh_instance_set_custom_data(RID p_multimesh, int p_index, const Color &p_color) override;
virtual RID _multimesh_get_mesh(RID p_multimesh) const override;
virtual void _multimesh_set_custom_aabb(RID p_multimesh, const AABB &p_aabb) override;
virtual AABB _multimesh_get_custom_aabb(RID p_multimesh) const override;
virtual AABB _multimesh_get_aabb(RID p_multimesh) override;
virtual Transform3D _multimesh_instance_get_transform(RID p_multimesh, int p_index) const override;
virtual Transform2D _multimesh_instance_get_transform_2d(RID p_multimesh, int p_index) const override;
virtual Color _multimesh_instance_get_color(RID p_multimesh, int p_index) const override;
virtual Color _multimesh_instance_get_custom_data(RID p_multimesh, int p_index) const override;
virtual void _multimesh_set_buffer(RID p_multimesh, const Vector<float> &p_buffer) override;
virtual Vector<float> _multimesh_get_buffer(RID p_multimesh) const override;
virtual void _multimesh_set_visible_instances(RID p_multimesh, int p_visible) override;
virtual int _multimesh_get_visible_instances(RID p_multimesh) const override;
virtual MultiMeshInterpolator *_multimesh_get_interpolator(RID p_multimesh) const override;
void _update_dirty_multimeshes();
_FORCE_INLINE_ RS::MultimeshTransformFormat multimesh_get_transform_format(RID p_multimesh) const {
MultiMesh *multimesh = multimesh_owner.get_or_null(p_multimesh);
return multimesh->xform_format;
}
_FORCE_INLINE_ bool multimesh_uses_colors(RID p_multimesh) const {
MultiMesh *multimesh = multimesh_owner.get_or_null(p_multimesh);
return multimesh->uses_colors;
}
_FORCE_INLINE_ bool multimesh_uses_custom_data(RID p_multimesh) const {
MultiMesh *multimesh = multimesh_owner.get_or_null(p_multimesh);
return multimesh->uses_custom_data;
}
_FORCE_INLINE_ uint32_t multimesh_get_instances_to_draw(RID p_multimesh) const {
MultiMesh *multimesh = multimesh_owner.get_or_null(p_multimesh);
if (multimesh->visible_instances >= 0) {
return multimesh->visible_instances;
}
return multimesh->instances;
}
_FORCE_INLINE_ GLuint multimesh_get_gl_buffer(RID p_multimesh) const {
MultiMesh *multimesh = multimesh_owner.get_or_null(p_multimesh);
return multimesh->buffer;
}
_FORCE_INLINE_ uint32_t multimesh_get_stride(RID p_multimesh) const {
MultiMesh *multimesh = multimesh_owner.get_or_null(p_multimesh);
return multimesh->stride_cache;
}
_FORCE_INLINE_ uint32_t multimesh_get_color_offset(RID p_multimesh) const {
MultiMesh *multimesh = multimesh_owner.get_or_null(p_multimesh);
return multimesh->color_offset_cache;
}
_FORCE_INLINE_ uint32_t multimesh_get_custom_data_offset(RID p_multimesh) const {
MultiMesh *multimesh = multimesh_owner.get_or_null(p_multimesh);
return multimesh->custom_data_offset_cache;
}
/* SKELETON API */
Skeleton *get_skeleton(RID p_rid) { return skeleton_owner.get_or_null(p_rid); };
bool owns_skeleton(RID p_rid) { return skeleton_owner.owns(p_rid); };
virtual RID skeleton_allocate() override;
virtual void skeleton_initialize(RID p_rid) override;
virtual void skeleton_free(RID p_rid) override;
virtual void skeleton_allocate_data(RID p_skeleton, int p_bones, bool p_2d_skeleton = false) override;
virtual void skeleton_set_base_transform_2d(RID p_skeleton, const Transform2D &p_base_transform) override;
virtual int skeleton_get_bone_count(RID p_skeleton) const override;
virtual void skeleton_bone_set_transform(RID p_skeleton, int p_bone, const Transform3D &p_transform) override;
virtual Transform3D skeleton_bone_get_transform(RID p_skeleton, int p_bone) const override;
virtual void skeleton_bone_set_transform_2d(RID p_skeleton, int p_bone, const Transform2D &p_transform) override;
virtual Transform2D skeleton_bone_get_transform_2d(RID p_skeleton, int p_bone) const override;
virtual void skeleton_update_dependency(RID p_base, DependencyTracker *p_instance) override;
void _update_dirty_skeletons();
_FORCE_INLINE_ bool skeleton_is_valid(RID p_skeleton) {
return skeleton_owner.get_or_null(p_skeleton) != nullptr;
}
};
} // namespace GLES3
#endif // GLES3_ENABLED
#endif // MESH_STORAGE_GLES3_H
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