1 files changed, 152 insertions, 0 deletions
diff --git a/Source/Graphics/drawbatch.h b/Source/Graphics/drawbatch.h
new file mode 100644
index 00000000..fcc717e3
--- /dev/null
+++ b/Source/Graphics/drawbatch.h
@@ -0,0 +1,152 @@
+//-----------------------------------------------------------------------------
+//           Name: drawbatch.h
+//      Developer: Wolfire Games LLC
+//    Description: 
+//        License: Read below
+//-----------------------------------------------------------------------------
+//
+//
+//   Copyright 2022 Wolfire Games LLC
+//
+//   Licensed under the Apache License, Version 2.0 (the "License");
+//   you may not use this file except in compliance with the License.
+//   You may obtain a copy of the License at
+//
+//       http://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+//
+//-----------------------------------------------------------------------------
+#pragma once
+
+#include <Graphics/glstate.h>
+#include <Graphics/vbocontainer.h>
+
+#include <Math/vec4.h>
+#include <Math/mat4.h>
+#include <Math/mat3.h>
+
+#include <Asset/Asset/texture.h>
+
+#include <opengl.h>
+
+#include <vector>
+#include <string>
+
+enum UniformType {_mat3, _mat4, _vec3, _vec4, _float};
+
+class Uniform {
+public:
+    UniformType type;
+    std::string name;
+    std::vector<GLfloat> data;
+    bool individual;
+    void Apply() const;
+    Uniform();
+};
+
+class DrawBatch;
+
+class AddedBatch {
+public:
+    const DrawBatch* batch;
+    GLuint start_face;
+    GLuint end_face;
+    GLuint start_vertex;
+    GLuint end_vertex;
+};
+
+const int _vbo_threshold = 5;
+
+class DrawBatch {
+public:
+    bool visible;
+    bool no_vbo;
+    vec4 shadow_offset;
+    vec4 color;
+    std::vector<GLfloat> normals;
+    std::vector<GLfloat> vertices;
+    std::vector<GLfloat> tex_coords[8];
+    int         tex_coord_elements[8];
+    std::vector<GLuint> faces;
+
+    bool use_vbo_texcoords[8];
+
+    RC_VBOContainer vbo_normals;
+    RC_VBOContainer vbo_vertices;
+    RC_VBOContainer vbo_tex_coords[8];
+    RC_VBOContainer vbo_faces;
+
+    vec3 bounding_sphere_center;
+    float bounding_sphere_radius;
+
+    GLfloat* normal_ptr;
+    GLfloat* vertex_ptr;
+    GLfloat* tex_coord_ptr[8];
+    const GLuint* face_ptr;
+    GLuint   num_face_ids;
+
+    int draw_times;
+
+    std::vector<AddedBatch> added_batches;
+
+    bool use_cam_pos;
+    bool use_time;
+    bool use_light;
+
+    bool transparent;
+    
+    GLState gl_state;
+
+    mat4 shadow_proj_matrix;
+    mat4 shadow_view_matrix;
+    GLenum depth_func;
+    bool polygon_offset;
+    mat4 transform;
+    mat3 inv_transpose_transform;
+
+    int shader_id;
+
+    static const int kMaxTextures = 32;
+    TextureRef texture_ref[kMaxTextures];
+
+    bool to_delete;
+
+    std::vector<Uniform> uniforms;
+    void SetTransform(const mat4 &_transform);
+    DrawBatch();
+
+    enum CreateVBOParam {NO_FACE_VBO, FACE_VBO};
+
+    void Draw();
+
+    void SetupVertexArrays() const;
+    void SetEndState() const;
+    void SetStartState() const;
+    void ApplyIndividualUniforms() const;
+    void AddUniformMat3(std::string _name, const GLfloat *_data);
+    void AddUniformMat4(std::string _name, const GLfloat *_data);
+    void AddUniformVec3(std::string _name, const GLfloat *_data);
+    void AddUniformVec3(std::string _name, const vec3 &_data);
+    void AddUniformVec4( std::string _name, const GLfloat *_data );
+    void AddUniformVec4(std::string _name, const vec4 &_data);
+    void TexCoordPointer( int size, GLfloat* data, int which_tex );
+    void VertexPointer( GLfloat* data );
+    void NormalPointer( GLfloat* data );
+    void DrawElements( GLuint size, const GLuint* data );
+    void AddBatch(const DrawBatch &other);
+    void Dispose();
+    void CreateVBO(CreateVBOParam create_vbo_param);
+    void DrawVertexArrays() const;
+    void DrawVertexArrayRange(GLuint start, GLuint end, GLuint start_vertex, GLuint end_vertex) const;
+    void EndVertexArrays() const;
+    void AddUniformFloat( std::string _name, GLfloat data );
+    void SetUniformFloat( std::string _name, GLfloat data );
+    void SetUniformVec3( std::string _name, const vec3 &_data );
+    void SetUniformVec4( std::string _name, const vec4 &_data );
+    void MakeUniformIndividual( std::string _name );
+};