renderer.h

#ifndef _RENDERER_H_
#define _RENDERER_H_

// ezt egyelore iderakom, ameddig nem talalok ki jobb jatekot.
#ifndef _USE_OPENGL
#include <GLES2/gl2.h>
#else
#include <GL/GL.h>
#include "../platform/windows/ext.h"
#endif

typedef struct{
    int width, height;
} windowMetrices_t;

extern void setupRenderer(windowMetrices_t metrices);

///////////////////////////////////////////////////////////////////////////////
// timer
///////////////////////////////////////////////////////////////////////////////

extern float getTime();

///////////////////////////////////////////////////////////////////////////////
// rendering
///////////////////////////////////////////////////////////////////////////////
extern void clear(float r, float g, float b, float a);

// clears every binded state
extern void clearStates();

enum blending_e{
    BLEND_COUTN
};
extern void blending();

extern void flush();

///////////////////////////////////////////////////////////////////////////////
// mesh
///////////////////////////////////////////////////////////////////////////////
enum polygon_drawtype_e{
    DRAW_triangles,
    DRAW_triangleFan,
    DRAW_COUNT
};

typedef struct{
    const float *vertices;       int vertices_len;
    const float *normals;        /*int normals_len;*/
    const float *uvs;            /*int uvs_len;*/
    const short int *indices; int indices_len; //in OGLES only _SHORT and _BYTE accepted :(
    enum polygon_drawtype_e drawtype;
    //
    int use_vbo;
    int vertices_id, normals_id, uvs_id, indices_id;
} mesh_t;

extern int mesh_build(mesh_t *meshObject);

extern void mesh_bind(mesh_t *meshObject);
extern void mesh_draw(mesh_t *meshObject);

extern void mesh_unbind(mesh_t *meshObject);
///////////////////////////////////////////////////////////////////////////////
// shader
// elengedhetetlen resze az ogles2-nek
///////////////////////////////////////////////////////////////////////////////
enum fixed_uniforms_e{
    UNIFORM_modelView,
    UNIFORM_projection,
    UNIFORM_COUNT
};

enum fixed_attribs_e{
    ATTRIB_vertex,
    ATTRIB_texCoord,
    ATTRIB_color,
    ATTRIB_normal,
    ATTRIB_tangent,
    ATTRIB_COUNT
};

typedef struct{
    const char *vertex_source, *fragment_source;
    int programID, vertexID, fragmentID;
    int fxed_attrib_id[16];
    int fxed_uniform_id[16];
} shader_t;

extern int shader_build(shader_t *shaderObject);

extern void shader_bind(shader_t *shaderObject);
extern void shader_unbind(shader_t *shaderObject);

extern void shader_uniform_1f  (shader_t *shaderObject, const char* name, float f1);
extern void shader_uniform_2f  (shader_t *shaderObject, const char* name, float f1, float f2);
extern void shader_uniform_3f  (shader_t *shaderObject, const char* name, float f1, float f2, float f3);
extern void shader_uniform_4f  (shader_t *shaderObject, const char* name, float f1, float f2, float f3, float f4);
extern void shader_uniform_1i  (shader_t *shaderObject, const char* name, int i);
extern void shader_uniform_mat3(shader_t *shaderObject, const char* name, float *mat);
extern void shader_uniform_mat4(shader_t *shaderObject, const char* name, float *mat);

extern void shader_fixed_attrib(const enum fixed_attribs_e dest, const void* data, const int length, const int elem_length);
//extern void shader_fixed_uniform(fixed_uniforms dest, const void* data, const int length); //lol mi + 9001 overload

///////////////////////////////////////////////////////////////////////////////
// texture
///////////////////////////////////////////////////////////////////////////////
typedef struct {
    int id;
    int sx, sy, ch;
    void* bitmap;
    int bound_level;
} texture_t;

// @return 0 if succeed.
extern int bitmap_create(texture_t *textureObject);
extern int bitmap_load(texture_t *textureObject, const void* data, const unsigned int length, int force_ch);
extern int bitmap_resize(texture_t *textureObject, const unsigned int nx, const unsigned int ny);
extern int bitmap_buildTexture(texture_t *textureObject);

extern void bitmap_bindTexture(texture_t *textureObject);
extern void bitmap_bindTexture_level(texture_t *textureObject, int level);
extern void bitmap_unbindTexture(texture_t *textureObject);

extern int bitmap_delete(texture_t *textureObject);

///////////////////////////////////////////////////////////////////////////////
// Misc
///////////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////////
// Data for full screen aligned quad
///////////////////////////////////////////////////////////////////////////////
extern const float *full_screen_quad_vertices;
extern const float *full_screen_quad_uvs;
extern const unsigned short *full_screen_quad_indices;

extern const int full_screen_quad_vertices_length;
extern const int full_screen_quad_uvs_length;
extern const int full_screen_quad_indices_length;

#endif /*_RENDERER_H_*/