#ifndef MAIN_H
#define MAIN_H

#ifndef _WIN32
//#define VPDEBUG
#endif
#ifdef VPDEBUG
void dump_tex(int id);
void dump_start();
void dump_stop();
extern int dumping;
#endif

#include <Glide64/trace.h>

#define zscale 1.0f

typedef struct _wrapper_config
{
    int fbo;
    int anisofilter;
    int vram_size;
} wrapper_config;
extern wrapper_config config;

// VP added this utility function
// returns the bytes per pixel of a given GR texture format
int grTexFormatSize(int fmt);

/* 2015.03.07 cxd4 -- regulated GL state machine debugging using glGetError */
extern int grDisplayGLError(const char* message);

extern int packed_pixels_support;
extern int ati_sucks;
extern float largest_supported_anisotropy;

extern int default_texture; // the infamous "32*1024*1024" is now configurable
extern int depth_texture;
void set_depth_shader();
void set_bw_shader();
extern float invtex[2];
extern int buffer_cleared; // mark that the buffer has been cleared, used to check if we need to reload the texture buffer content

#ifdef _WIN32
#include <windows.h>
typedef const char * (WINAPI * PFNWGLGETEXTENSIONSSTRINGARBPROC)(HDC hdc);
#else
#include <stdio.h>
#endif

#if defined(__ANDROID__) || defined(ANDROID)
#include "OGLESwrappers.h"
#else
#include "opengl.h"

extern "C" {
#ifndef GL_VERSION_1_3
    extern PFNGLACTIVETEXTUREARBPROC glActiveTextureARB;
    extern PFNGLMULTITEXCOORD2FARBPROC glMultiTexCoord2fARB;
#endif
    extern PFNGLATTACHOBJECTARBPROC glAttachObjectARB;
    extern PFNGLBINDFRAMEBUFFEREXTPROC glBindFramebufferEXT;
    extern PFNGLBINDRENDERBUFFEREXTPROC glBindRenderbufferEXT;
    extern PFNGLBLENDFUNCSEPARATEEXTPROC glBlendFuncSeparateEXT;
    extern PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glCheckFramebufferStatusEXT;
    extern PFNGLCOMPILESHADERARBPROC glCompileShaderARB;
    extern PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgramObjectARB;
    extern PFNGLCREATESHADEROBJECTARBPROC glCreateShaderObjectARB;
    extern PFNGLDELETERENDERBUFFERSEXTPROC glDeleteRenderbuffersEXT;
    extern PFNGLDELETEFRAMEBUFFERSEXTPROC glDeleteFramebuffersEXT;
    extern PFNGLFOGCOORDFEXTPROC glFogCoordfEXT;
    extern PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC glFramebufferRenderbufferEXT;
    extern PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2DEXT;
    extern PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffersEXT;
    extern PFNGLGENRENDERBUFFERSEXTPROC glGenRenderbuffersEXT;
    extern PFNGLGETINFOLOGARBPROC glGetInfoLogARB;
    extern PFNGLGETOBJECTPARAMETERIVARBPROC glGetObjectParameterivARB;
    extern PFNGLGETUNIFORMLOCATIONARBPROC glGetUniformLocationARB;
    extern PFNGLLINKPROGRAMARBPROC glLinkProgramARB;
    extern PFNGLRENDERBUFFERSTORAGEEXTPROC glRenderbufferStorageEXT;
    extern PFNGLSECONDARYCOLOR3FPROC glSecondaryColor3f;
    extern PFNGLSHADERSOURCEARBPROC glShaderSourceARB;
    extern PFNGLUNIFORM1FARBPROC glUniform1fARB;
    extern PFNGLUNIFORM1IARBPROC glUniform1iARB;
    extern PFNGLUNIFORM4FARBPROC glUniform4fARB;
    extern PFNGLUSEPROGRAMOBJECTARBPROC glUseProgramObjectARB;
    extern PFNGLGETHANDLEARBPROC glGetHandleARB;
}
#endif

#include "glide.h"

void init_geometry();
void init_textures();
void init_combiner();
void free_textures();
void updateCombiner(int i);
void updateCombinera(int i);
void remove_tex(unsigned int idmin, unsigned int idmax);
void add_tex(unsigned int id);

#ifdef _WIN32
extern PFNGLACTIVETEXTUREARBPROC glActiveTextureARB;
extern PFNGLMULTITEXCOORD2FARBPROC glMultiTexCoord2fARB;
extern PFNGLBLENDFUNCSEPARATEEXTPROC glBlendFuncSeparateEXT;
extern PFNGLFOGCOORDFPROC glFogCoordfEXT;

extern PFNGLCREATESHADEROBJECTARBPROC glCreateShaderObjectARB;
extern PFNGLSHADERSOURCEARBPROC glShaderSourceARB;
extern PFNGLCOMPILESHADERARBPROC glCompileShaderARB;
extern PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgramObjectARB;
extern PFNGLATTACHOBJECTARBPROC glAttachObjectARB;
extern PFNGLLINKPROGRAMARBPROC glLinkProgramARB;
extern PFNGLUSEPROGRAMOBJECTARBPROC glUseProgramObjectARB;
extern PFNGLGETHANDLEARBPROC glGetHandleARB;
extern PFNGLGETUNIFORMLOCATIONARBPROC glGetUniformLocationARB;
extern PFNGLUNIFORM1IARBPROC glUniform1iARB;
extern PFNGLUNIFORM4IARBPROC glUniform4iARB;
extern PFNGLUNIFORM4FARBPROC glUniform4fARB;
extern PFNGLUNIFORM1FARBPROC glUniform1fARB;
extern PFNGLDELETEOBJECTARBPROC glDeleteObjectARB;
extern PFNGLGETINFOLOGARBPROC glGetInfoLogARB;
extern PFNGLGETOBJECTPARAMETERIVARBPROC glGetObjectParameterivARB;
extern PFNGLSECONDARYCOLOR3FPROC glSecondaryColor3f;
#endif
void check_link(GLuint program);
void vbo_enable();
void vbo_disable();

//Vertex Attribute Locations
#define POSITION_ATTR 0
#define COLOUR_ATTR 1
#define TEXCOORD_0_ATTR 2
#define TEXCOORD_1_ATTR 3
#define FOG_ATTR 4

extern int w_buffer_mode;
extern int nbTextureUnits;
extern int g_width, g_height, widtho, heighto;
extern int tex0_width, tex0_height, tex1_width, tex1_height;
extern float lambda;
extern int need_lambda[2];
extern float lambda_color[2][4];
extern int inverted_culling;
extern int culling_mode;
extern int render_to_texture;
extern int lfb_color_fmt;
extern int need_to_compile;
extern int blackandwhite0;
extern int blackandwhite1;
extern int TMU_SIZE;

extern int blend_func_separate_support;
extern int fog_coord_support;
//extern int pbuffer_support;
extern int glsl_support;
extern unsigned int pBufferAddress;
extern int viewport_width, viewport_height, viewport_offset, nvidia_viewport_hack;
extern int UMAmode;

void grChromaRangeExt(GrColor_t color0, GrColor_t color1, FxU32 mode);
void grChromaRangeModeExt(GrChromakeyMode_t mode);
void grTexChromaRangeExt(GrChipID_t tmu, GrColor_t color0, GrColor_t color1, GrTexChromakeyMode_t mode);
void grTexChromaModeExt(GrChipID_t tmu, GrChromakeyMode_t mode);
void updateTexture();
void reloadTexture();
void free_combiners();
void compile_shader();
void set_lambda();
void set_copy_shader();
void disable_textureSizes();
void ExitFullScreen();

// config functions

void grConfigWrapperExt(FxI32,FxBool,FxBool);
uint32_t grWrapperFullScreenResolutionExt(uint32_t * width, uint32_t * height);
char ** grQueryResolutionsExt(int32_t*);
FX_ENTRY FxBool FX_CALL grKeyPressedExt(FxU32 key);
FX_ENTRY void FX_CALL grGetGammaTableExt(FxU32, FxU32*, FxU32*, FxU32*);

int getFullScreenWidth();
int getFullScreenHeight();

// ZIGGY framebuffer copy extension
// allow to copy the depth or color buffer from back/front to front/back
#define GR_FBCOPY_MODE_DEPTH 0
#define GR_FBCOPY_MODE_COLOR 1
#define GR_FBCOPY_BUFFER_BACK 0
#define GR_FBCOPY_BUFFER_FRONT 1
FX_ENTRY void FX_CALL grFramebufferCopyExt(int x, int y, int w, int h,
                                           int buffer_from, int buffer_to, int mode);

// COMBINE extension

typedef FxU32 GrCCUColor_t;
typedef FxU32 GrACUColor_t;
typedef FxU32 GrTCCUColor_t;
typedef FxU32 GrTACUColor_t;

typedef FxU32 GrCombineMode_t;
#define GR_FUNC_MODE_ZERO                 0x00
#define GR_FUNC_MODE_X                    0x01
#define GR_FUNC_MODE_ONE_MINUS_X          0x02
#define GR_FUNC_MODE_NEGATIVE_X           0x03
#define GR_FUNC_MODE_X_MINUS_HALF         0x04

#define GR_CMBX_ZERO                      0x00
#define GR_CMBX_TEXTURE_ALPHA             0x01
#define GR_CMBX_ALOCAL                    0x02
#define GR_CMBX_AOTHER                    0x03
#define GR_CMBX_B                         0x04
#define GR_CMBX_CONSTANT_ALPHA            0x05
#define GR_CMBX_CONSTANT_COLOR            0x06
#define GR_CMBX_DETAIL_FACTOR             0x07
#define GR_CMBX_ITALPHA                   0x08
#define GR_CMBX_ITRGB                     0x09
#define GR_CMBX_LOCAL_TEXTURE_ALPHA       0x0a
#define GR_CMBX_LOCAL_TEXTURE_RGB         0x0b
#define GR_CMBX_LOD_FRAC                  0x0c
#define GR_CMBX_OTHER_TEXTURE_ALPHA       0x0d
#define GR_CMBX_OTHER_TEXTURE_RGB         0x0e
#define GR_CMBX_TEXTURE_RGB               0x0f
#define GR_CMBX_TMU_CALPHA                0x10
#define GR_CMBX_TMU_CCOLOR                0x11

FX_ENTRY void FX_CALL
    grColorCombineExt(GrCCUColor_t a, GrCombineMode_t a_mode,
    GrCCUColor_t b, GrCombineMode_t b_mode,
    GrCCUColor_t c, FxBool c_invert,
    GrCCUColor_t d, FxBool d_invert,
    FxU32 shift, FxBool invert);

FX_ENTRY void FX_CALL
    grAlphaCombineExt(GrACUColor_t a, GrCombineMode_t a_mode,
    GrACUColor_t b, GrCombineMode_t b_mode,
    GrACUColor_t c, FxBool c_invert,
    GrACUColor_t d, FxBool d_invert,
    FxU32 shift, FxBool invert);

FX_ENTRY void FX_CALL
    grTexColorCombineExt(GrChipID_t       tmu,
    GrTCCUColor_t a, GrCombineMode_t a_mode,
    GrTCCUColor_t b, GrCombineMode_t b_mode,
    GrTCCUColor_t c, FxBool c_invert,
    GrTCCUColor_t d, FxBool d_invert,
    FxU32 shift, FxBool invert);

FX_ENTRY void FX_CALL
    grTexAlphaCombineExt(GrChipID_t       tmu,
    GrTACUColor_t a, GrCombineMode_t a_mode,
    GrTACUColor_t b, GrCombineMode_t b_mode,
    GrTACUColor_t c, FxBool c_invert,
    GrTACUColor_t d, FxBool d_invert,
    FxU32 shift, FxBool invert);

FX_ENTRY void FX_CALL
    grConstantColorValueExt(GrChipID_t    tmu,
    GrColor_t     value);

void CHECK_FRAMEBUFFER_STATUS(void);

#endif