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kraken/kraken/KRMesh.h

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//
// KRMesh.h
// Kraken Engine
//
// Copyright 2024 Kearwood Gilbert. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other materials
// provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY KEARWOOD GILBERT ''AS IS'' AND ANY EXPRESS OR IMPLIED
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KEARWOOD GILBERT OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// The views and conclusions contained in the software and documentation are those of the
// authors and should not be interpreted as representing official policies, either expressed
// or implied, of Kearwood Gilbert.
//
#pragma once
#include "KREngine-common.h"
#include "KRContext.h"
#include "KRBone.h"
#include "KRMeshManager.h"
#include "KREngine-common.h"
#include "hydra.h"
using namespace kraken;
#define MAX_VBO_SIZE 65535
#define KRENGINE_MAX_BONE_WEIGHTS_PER_VERTEX 4
#define KRENGINE_MAX_NAME_LENGTH 256
// MAX_VBO_SIZE must be divisible by 3 so triangles aren't split across VBO objects...
#define BUFFER_OFFSET(i) ((char *)NULL + (i))
#include "KRMaterialManager.h"
#include "KRCamera.h"
#include "KRViewport.h"
class KRMaterial;
class KRNode;
class KRRenderPass;
enum class ModelFormat : __uint8_t
{
KRENGINE_MODEL_FORMAT_TRIANGLES = 0,
KRENGINE_MODEL_FORMAT_STRIP,
KRENGINE_MODEL_FORMAT_INDEXED_TRIANGLES,
KRENGINE_MODEL_FORMAT_INDEXED_STRIP
};
class KRMesh : public KRResource
{
public:
static void parseName(const std::string& name, std::string& lodBaseName, int& lodCoverage);
KRMesh(KRContext& context, std::string name, mimir::Block* data);
KRMesh(KRContext& context, std::string name);
virtual ~KRMesh();
kraken_stream_level getStreamLevel();
void preStream(float lodCoverage);
bool hasTransparency();
typedef enum
{
KRENGINE_ATTRIB_VERTEX = 0,
KRENGINE_ATTRIB_NORMAL,
KRENGINE_ATTRIB_TANGENT,
KRENGINE_ATTRIB_TEXUVA,
KRENGINE_ATTRIB_TEXUVB,
KRENGINE_ATTRIB_BONEINDEXES,
KRENGINE_ATTRIB_BONEWEIGHTS,
KRENGINE_ATTRIB_VERTEX_SHORT,
KRENGINE_ATTRIB_NORMAL_SHORT,
KRENGINE_ATTRIB_TANGENT_SHORT,
KRENGINE_ATTRIB_TEXUVA_SHORT,
KRENGINE_ATTRIB_TEXUVB_SHORT,
KRENGINE_NUM_ATTRIBUTES
} vertex_attrib_t;
typedef struct
{
ModelFormat format;
std::vector<hydra::Vector3> vertices;
std::vector<__uint16_t> vertex_indexes;
std::vector<std::pair<int, int> > vertex_index_bases;
std::vector<hydra::Vector2> uva;
std::vector<hydra::Vector2> uvb;
std::vector<hydra::Vector3> normals;
std::vector<hydra::Vector3> tangents;
std::vector<int> submesh_starts;
std::vector<int> submesh_lengths;
std::vector<std::string> material_names;
std::vector<std::string> bone_names;
std::vector<std::vector<int> > bone_indexes;
std::vector<hydra::Matrix4> bone_bind_poses;
std::vector<std::vector<float> > bone_weights;
} mesh_info;
void render(const KRNode::RenderInfo& ri, const std::string& object_name, const hydra::Matrix4& matModel, KRTexture* pLightMap, const std::vector<KRBone*>& bones, const hydra::Vector3& rim_color, float rim_power, float lod_coverage = 0.0f);
std::string m_lodBaseName;
virtual std::string getExtension();
virtual bool save(const std::string& path);
virtual bool save(mimir::Block& data);
void LoadData(const mesh_info& mi, bool calculate_normals, bool calculate_tangents);
void loadPack(mimir::Block* data);
void convertToIndexed();
void optimize();
void optimizeIndexes();
void renderNoMaterials(VkCommandBuffer& commandBuffer, const KRRenderPass* renderPass, const std::string& object_name, const std::string& material_name, float lodCoverage);
bool isReady() const;
float getMaxDimension();
hydra::Vector3 getMinPoint() const;
hydra::Vector3 getMaxPoint() const;
class Submesh
{
public:
Submesh()
{};
~Submesh()
{
vbo_data_blocks.clear();
for (auto itr = vertex_data_blocks.begin(); itr != vertex_data_blocks.end(); itr++) {
delete (*itr);
}
for (auto itr = index_data_blocks.begin(); itr != index_data_blocks.end(); itr++) {
delete (*itr);
}
};
int start_vertex;
int vertex_count;
char szMaterialName[KRENGINE_MAX_NAME_LENGTH];
vector<mimir::Block*> vertex_data_blocks;
vector<mimir::Block*> index_data_blocks;
// KRMeshManager depends on the address of KRVBOData's being constant
// after allocation, enforced by deleted copy constructors.
// As std::vector requires copy constuctors, we wrap these in shared_ptr.
vector<shared_ptr<KRMeshManager::KRVBOData>> vbo_data_blocks;
};
typedef struct
{
union
{
struct
{ // For Indexed triangles / strips
uint16_t index_group;
uint16_t index_group_offset;
};
int32_t start_vertex; // For non-indexed trigangles / strips
};
int32_t vertex_count;
char szName[KRENGINE_MAX_NAME_LENGTH];
} pack_material;
typedef struct
{
char szName[KRENGINE_MAX_NAME_LENGTH];
float bind_pose[16];
} pack_bone;
int getLODCoverage() const;
std::string getLODBaseName() const;
static bool lod_sort_predicate(const KRMesh* m1, const KRMesh* m2);
bool has_vertex_attribute(vertex_attrib_t attribute_type) const;
static bool has_vertex_attribute(int vertex_attrib_flags, vertex_attrib_t attribute_type);
int getSubmeshCount() const;
int getVertexCount(int submesh) const;
__uint32_t getVertexAttributes() const;
int getTriangleVertexIndex(int submesh, int index) const;
hydra::Vector3 getVertexPosition(int index) const;
hydra::Vector3 getVertexNormal(int index) const;
hydra::Vector3 getVertexTangent(int index) const;
hydra::Vector2 getVertexUVA(int index) const;
hydra::Vector2 getVertexUVB(int index) const;
int getBoneIndex(int index, int weight_index) const;
float getBoneWeight(int index, int weight_index) const;
void setVertexPosition(int index, const hydra::Vector3& v);
void setVertexNormal(int index, const hydra::Vector3& v);
void setVertexTangent(int index, const hydra::Vector3& v);
void setVertexUVA(int index, const hydra::Vector2& v);
void setVertexUVB(int index, const hydra::Vector2& v);
void setBoneIndex(int index, int weight_index, int bone_index);
void setBoneWeight(int index, int weight_index, float bone_weight);
static size_t VertexSizeForAttributes(__int32_t vertex_attrib_flags);
static size_t AttributeOffset(__int32_t vertex_attrib, __int32_t vertex_attrib_flags);
static VkFormat AttributeVulkanFormat(__int32_t vertex_attrib);
int getBoneCount();
char* getBoneName(int bone_index);
hydra::Matrix4 getBoneBindPose(int bone_index);
ModelFormat getModelFormat() const;
bool lineCast(const hydra::Vector3& v0, const hydra::Vector3& v1, hydra::HitInfo& hitinfo) const;
bool rayCast(const hydra::Vector3& v0, const hydra::Vector3& dir, hydra::HitInfo& hitinfo) const;
bool sphereCast(const hydra::Matrix4& model_to_world, const hydra::Vector3& v0, const hydra::Vector3& v1, float radius, hydra::HitInfo& hitinfo) const;
static int GetLODCoverage(const std::string& name);
protected:
bool m_constant; // TRUE if this should be always loaded and should not be passed through the streamer
private:
mimir::Block* m_pData;
mimir::Block* m_pMetaData;
mimir::Block* m_pIndexBaseData;
void getSubmeshes();
void getMaterials();
void renderSubmesh(VkCommandBuffer& commandBuffer, int iSubmesh, const KRRenderPass* renderPass, const std::string& object_name, const std::string& material_name, float lodCoverage);
static bool rayCast(const hydra::Vector3& start, const hydra::Vector3& dir, const hydra::Triangle3& tri, const hydra::Vector3& tri_n0, const hydra::Vector3& tri_n1, const hydra::Vector3& tri_n2, hydra::HitInfo& hitinfo);
static bool sphereCast(const hydra::Matrix4& model_to_world, const hydra::Vector3& v0, const hydra::Vector3& v1, float radius, const hydra::Triangle3& tri, hydra::HitInfo& hitinfo);
int m_lodCoverage; // This LOD level is activated when the bounding box of the model will cover less than this percent of the screen (100 = highest detail model)
vector<KRMaterial*> m_materials;
set<KRMaterial*> m_uniqueMaterials;
bool m_hasTransparency;
hydra::Vector3 m_minPoint, m_maxPoint;
typedef struct
{
char szTag[16];
int32_t model_format; // 0 == Triangle list, 1 == Triangle strips, 2 == Indexed triangle list, 3 == Indexed triangle strips, rest are reserved (model_format_t enum)
int32_t vertex_attrib_flags;
int32_t vertex_count;
int32_t submesh_count;
int32_t bone_count;
float minx, miny, minz, maxx, maxy, maxz; // Axis aligned bounding box, in model's coordinate space
int32_t index_count;
int32_t index_base_count;
unsigned char reserved[444]; // Pad out to 512 bytes
} pack_header;
vector<Submesh> m_submeshes;
int m_vertex_attribute_offset[KRENGINE_NUM_ATTRIBUTES];
int m_vertex_size;
void updateAttributeOffsets();
void setName(const std::string name);
pack_material* getSubmesh(int mesh_index) const;
unsigned char* getVertexData() const;
size_t getVertexDataOffset() const;
unsigned char* getVertexData(int index) const;
__uint16_t* getIndexData() const;
size_t getIndexDataOffset() const;
__uint32_t* getIndexBaseData() const;
pack_header* getHeader() const;
pack_bone* getBone(int index);
void getIndexedRange(int index_group, int& start_index_offset, int& start_vertex_offset, int& index_count, int& vertex_count) const;
void releaseData();
void createDataBlocks(KRMeshManager::KRVBOData::vbo_type t);
};
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