[mupen64plus-pandora.git] / source / gles2rice / src / OGLGraphicsContext.cpp

/*
Copyright (C) 2003 Rice1964

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#include "osal_opengl.h"

#define M64P_PLUGIN_PROTOTYPES 1
#include "m64p_plugin.h"
#include "Config.h"
#include "Debugger.h"
#if SDL_VIDEO_OPENGL
#include "OGLExtensions.h"
#endif
#include "OGLDebug.h"
#include "OGLGraphicsContext.h"
#include "TextureManager.h"
#include "Video.h"
#include "version.h"

COGLGraphicsContext::COGLGraphicsContext() :
    m_bSupportMultiTexture(false),
    m_bSupportTextureEnvCombine(false),
    m_bSupportSeparateSpecularColor(false),
    m_bSupportSecondColor(false),
    m_bSupportFogCoord(false),
    m_bSupportTextureObject(false),
    m_bSupportRescaleNormal(false),
    m_bSupportLODBias(false),
    m_bSupportTextureMirrorRepeat(false),
    m_bSupportTextureLOD(false),
    m_bSupportNVRegisterCombiner(false),
    m_bSupportBlendColor(false),
    m_bSupportBlendSubtract(false),
    m_bSupportNVTextureEnvCombine4(false),
    m_pVendorStr(NULL),
    m_pRenderStr(NULL),
    m_pExtensionStr(NULL),
    m_pVersionStr(NULL)
{
}


COGLGraphicsContext::~COGLGraphicsContext()
{
}

bool COGLGraphicsContext::Initialize(uint32 dwWidth, uint32 dwHeight, BOOL bWindowed )
{
    DebugMessage(M64MSG_INFO, "Initializing OpenGL Device Context.");
    Lock();

    CGraphicsContext::Get()->m_supportTextureMirror = false;
    CGraphicsContext::Initialize(dwWidth, dwHeight, bWindowed );

    if( bWindowed )
    {
        windowSetting.statusBarHeightToUse = windowSetting.statusBarHeight;
        windowSetting.toolbarHeightToUse = windowSetting.toolbarHeight;
    }
    else
    {
        windowSetting.statusBarHeightToUse = 0;
        windowSetting.toolbarHeightToUse = 0;
    }

    int  depthBufferDepth = options.OpenglDepthBufferSetting;
    int  colorBufferDepth = 32;
    int bVerticalSync = windowSetting.bVerticalSync;
    if( options.colorQuality == TEXTURE_FMT_A4R4G4B4 ) colorBufferDepth = 16;

    // init sdl & gl
    DebugMessage(M64MSG_VERBOSE, "Initializing video subsystem...");
    if (CoreVideo_Init() != M64ERR_SUCCESS)   
        return false;

    /* hard-coded attribute values */
    const int iDOUBLEBUFFER = 1;

    /* set opengl attributes */
    CoreVideo_GL_SetAttribute(M64P_GL_DOUBLEBUFFER, iDOUBLEBUFFER);
    CoreVideo_GL_SetAttribute(M64P_GL_SWAP_CONTROL, bVerticalSync);
    CoreVideo_GL_SetAttribute(M64P_GL_BUFFER_SIZE, colorBufferDepth);
    CoreVideo_GL_SetAttribute(M64P_GL_DEPTH_SIZE, depthBufferDepth);

    /* set multisampling */
    if (options.multiSampling > 0)
    {
        CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLEBUFFERS, 1);
        if (options.multiSampling <= 2)
            CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLESAMPLES, 2);
        else if (options.multiSampling <= 4)
            CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLESAMPLES, 4);
        else if (options.multiSampling <= 8)
            CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLESAMPLES, 8);
        else
            CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLESAMPLES, 16);
    }

    /* Set the video mode */
    m64p_video_mode ScreenMode = bWindowed ? M64VIDEO_WINDOWED : M64VIDEO_FULLSCREEN;
    m64p_video_flags flags = M64VIDEOFLAG_SUPPORT_RESIZING;
#if 1
    if (CoreVideo_SetVideoMode(800, windowSetting.uDisplayHeight, colorBufferDepth, ScreenMode, flags) != M64ERR_SUCCESS)
#else
    if (CoreVideo_SetVideoMode(windowSetting.uDisplayWidth, windowSetting.uDisplayHeight, colorBufferDepth, ScreenMode, flags) != M64ERR_SUCCESS)
#endif
    {
        DebugMessage(M64MSG_ERROR, "Failed to set %i-bit video mode: %ix%i", colorBufferDepth, (int)windowSetting.uDisplayWidth, (int)windowSetting.uDisplayHeight);
        CoreVideo_Quit();
        return false;
    }

    /* check that our opengl attributes were properly set */
    int iActual;
    if (CoreVideo_GL_GetAttribute(M64P_GL_DOUBLEBUFFER, &iActual) == M64ERR_SUCCESS)
        if (iActual != iDOUBLEBUFFER)
            DebugMessage(M64MSG_WARNING, "Failed to set GL_DOUBLEBUFFER to %i. (it's %i)", iDOUBLEBUFFER, iActual);
    if (CoreVideo_GL_GetAttribute(M64P_GL_SWAP_CONTROL, &iActual) == M64ERR_SUCCESS)
        if (iActual != bVerticalSync)
            DebugMessage(M64MSG_WARNING, "Failed to set GL_SWAP_CONTROL to %i. (it's %i)", bVerticalSync, iActual);
    if (CoreVideo_GL_GetAttribute(M64P_GL_BUFFER_SIZE, &iActual) == M64ERR_SUCCESS)
        if (iActual != colorBufferDepth)
            DebugMessage(M64MSG_WARNING, "Failed to set GL_BUFFER_SIZE to %i. (it's %i)", colorBufferDepth, iActual);
    if (CoreVideo_GL_GetAttribute(M64P_GL_DEPTH_SIZE, &iActual) == M64ERR_SUCCESS)
        if (iActual != depthBufferDepth)
            DebugMessage(M64MSG_WARNING, "Failed to set GL_DEPTH_SIZE to %i. (it's %i)", depthBufferDepth, iActual);

#if SDL_VIDEO_OPENGL
    /* Get function pointers to OpenGL extensions (blame Microsoft Windows for this) */
    OGLExtensions_Init();
#endif

    char caption[500];
    sprintf(caption, "%s v%i.%i.%i", PLUGIN_NAME, VERSION_PRINTF_SPLIT(PLUGIN_VERSION));
    CoreVideo_SetCaption(caption);
    SetWindowMode();

    InitState();
    InitOGLExtension();
    sprintf(m_strDeviceStats, "%.60s - %.128s : %.60s", m_pVendorStr, m_pRenderStr, m_pVersionStr);
    TRACE0(m_strDeviceStats);
    DebugMessage(M64MSG_INFO, "Using OpenGL: %s", m_strDeviceStats);

    Unlock();

    Clear(CLEAR_COLOR_AND_DEPTH_BUFFER);    // Clear buffers
    UpdateFrame();
    Clear(CLEAR_COLOR_AND_DEPTH_BUFFER);
    UpdateFrame();
    
    m_bReady = true;
    status.isVertexShaderEnabled = false;

    return true;
}

bool COGLGraphicsContext::ResizeInitialize(uint32 dwWidth, uint32 dwHeight, BOOL bWindowed )
{
    Lock();

    CGraphicsContext::Initialize(dwWidth, dwHeight, bWindowed );

    int  depthBufferDepth = options.OpenglDepthBufferSetting;
    int  colorBufferDepth = 32;
    int bVerticalSync = windowSetting.bVerticalSync;
    if( options.colorQuality == TEXTURE_FMT_A4R4G4B4 ) colorBufferDepth = 16;

    /* hard-coded attribute values */
    const int iDOUBLEBUFFER = 1;

    /* set opengl attributes */
    CoreVideo_GL_SetAttribute(M64P_GL_DOUBLEBUFFER, iDOUBLEBUFFER);
    CoreVideo_GL_SetAttribute(M64P_GL_SWAP_CONTROL, bVerticalSync);
    CoreVideo_GL_SetAttribute(M64P_GL_BUFFER_SIZE, colorBufferDepth);
    CoreVideo_GL_SetAttribute(M64P_GL_DEPTH_SIZE, depthBufferDepth);

    /* set multisampling */
    if (options.multiSampling > 0)
    {
        CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLEBUFFERS, 1);
        if (options.multiSampling <= 2)
            CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLESAMPLES, 2);
        else if (options.multiSampling <= 4)
            CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLESAMPLES, 4);
        else if (options.multiSampling <= 8)
            CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLESAMPLES, 8);
        else
            CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLESAMPLES, 16);
    }

    /* Call Mupen64plus core Video Extension to resize the window, which will create a new OpenGL Context under SDL */
    if (CoreVideo_ResizeWindow(windowSetting.uDisplayWidth, windowSetting.uDisplayHeight) != M64ERR_SUCCESS)
    {
        DebugMessage(M64MSG_ERROR, "Failed to set %i-bit video mode: %ix%i", colorBufferDepth, (int)windowSetting.uDisplayWidth, (int)windowSetting.uDisplayHeight);
        CoreVideo_Quit();
        return false;
    }

    InitState();
    Unlock();

    Clear(CLEAR_COLOR_AND_DEPTH_BUFFER);    // Clear buffers
    UpdateFrame();
    Clear(CLEAR_COLOR_AND_DEPTH_BUFFER);
    UpdateFrame();
    
    return true;
}

void COGLGraphicsContext::InitState(void)
{
    m_pRenderStr = glGetString(GL_RENDERER);
    m_pExtensionStr = glGetString(GL_EXTENSIONS);
    m_pVersionStr = glGetString(GL_VERSION);
    m_pVendorStr = glGetString(GL_VENDOR);
    glMatrixMode(GL_PROJECTION);
    OPENGL_CHECK_ERRORS;
    glLoadIdentity();
    OPENGL_CHECK_ERRORS;

    glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
    OPENGL_CHECK_ERRORS;
    glClearDepth(1.0f);
    OPENGL_CHECK_ERRORS;

#if SDL_VIDEO_OPENGL
    glShadeModel(GL_SMOOTH);
    OPENGL_CHECK_ERRORS;

    //position viewer 
    //glMatrixMode(GL_MODELVIEW);
    //glLoadIdentity();

    glDisable(GL_ALPHA_TEST);
    OPENGL_CHECK_ERRORS;
#endif

    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
    OPENGL_CHECK_ERRORS;
    glDisable(GL_BLEND);
    OPENGL_CHECK_ERRORS;

    glFrontFace(GL_CCW);
    OPENGL_CHECK_ERRORS;
    glDisable(GL_CULL_FACE);
    OPENGL_CHECK_ERRORS;
#if SDL_VIDEO_OPENGL
    glDisable(GL_NORMALIZE);
    OPENGL_CHECK_ERRORS;
#endif

    glDepthFunc(GL_LEQUAL);
    OPENGL_CHECK_ERRORS;
    glEnable(GL_DEPTH_TEST);
    OPENGL_CHECK_ERRORS;

#if SDL_VIDEO_OPENGL
    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
    OPENGL_CHECK_ERRORS;
#endif

    glEnable(GL_BLEND);
    OPENGL_CHECK_ERRORS;
#if SDL_VIDEO_OPENGL
    glEnable(GL_ALPHA_TEST);
    OPENGL_CHECK_ERRORS;

    glMatrixMode(GL_PROJECTION);
    OPENGL_CHECK_ERRORS;
    glLoadIdentity();
    OPENGL_CHECK_ERRORS;
    
    glDepthRange(-1, 1);

#elif SDL_VIDEO_OPENGL_ES2
    glDepthRangef(-1.0f, 1.0f);
#endif
    OPENGL_CHECK_ERRORS;
}

void COGLGraphicsContext::InitOGLExtension(void)
{
#if SDL_VIDEO_OPENGL
    // important extension features, it is very bad not to have these feature
    m_bSupportMultiTexture = IsExtensionSupported(OSAL_GL_ARB_MULTITEXTURE);
    m_bSupportTextureEnvCombine = IsExtensionSupported("GL_EXT_texture_env_combine");
    
    m_bSupportSeparateSpecularColor = IsExtensionSupported("GL_EXT_separate_specular_color");
    m_bSupportSecondColor = IsExtensionSupported("GL_EXT_secondary_color");
    m_bSupportFogCoord = IsExtensionSupported("GL_EXT_fog_coord");
    m_bSupportTextureObject = IsExtensionSupported("GL_EXT_texture_object");

    // Optional extension features
    m_bSupportRescaleNormal = IsExtensionSupported("GL_EXT_rescale_normal");
    m_bSupportLODBias = IsExtensionSupported("GL_EXT_texture_lod_bias");
    m_bSupportAnisotropicFiltering = IsExtensionSupported("GL_EXT_texture_filter_anisotropic");
#else
    m_bSupportMultiTexture = true;
    m_bSupportFogCoord = false;
    m_bSupportAnisotropicFiltering = true;
#endif
    // Compute maxAnisotropicFiltering
    m_maxAnisotropicFiltering = 0;

    if( m_bSupportAnisotropicFiltering
    && (options.anisotropicFiltering == 2
        || options.anisotropicFiltering == 4
        || options.anisotropicFiltering == 8
        || options.anisotropicFiltering == 16))
    {
        //Get the max value of aniso that the graphic card support
        glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &m_maxAnisotropicFiltering);
        OPENGL_CHECK_ERRORS;

        // If user want more aniso than hardware can do
        if(options.anisotropicFiltering > (uint32) m_maxAnisotropicFiltering)
        {
            DebugMessage(M64MSG_INFO, "A value of '%i' is set for AnisotropicFiltering option but the hardware has a maximum value of '%i' so this will be used", options.anisotropicFiltering, m_maxAnisotropicFiltering);
        }

        //check if user want less anisotropy than hardware can do
        if((uint32) m_maxAnisotropicFiltering > options.anisotropicFiltering)
        m_maxAnisotropicFiltering = options.anisotropicFiltering;
    }
	
#if SDL_VIDEO_OPENGL
    // Nvidia only extension features (optional)
    m_bSupportNVRegisterCombiner = IsExtensionSupported("GL_NV_register_combiners");
    m_bSupportTextureMirrorRepeat = IsExtensionSupported("GL_IBM_texture_mirrored_repeat") || IsExtensionSupported("ARB_texture_mirrored_repeat");
    m_supportTextureMirror = m_bSupportTextureMirrorRepeat;
    m_bSupportTextureLOD = IsExtensionSupported("GL_EXT_texture_lod");
    m_bSupportBlendColor = IsExtensionSupported("GL_EXT_blend_color");
    m_bSupportBlendSubtract = IsExtensionSupported("GL_EXT_blend_subtract");
    m_bSupportNVTextureEnvCombine4 = IsExtensionSupported("GL_NV_texture_env_combine4");
#else
    m_supportTextureMirror = true;
#endif
}

bool COGLGraphicsContext::IsExtensionSupported(const char* pExtName)
{
    if (strstr((const char*)m_pExtensionStr, pExtName) != NULL)
    {
        DebugMessage(M64MSG_VERBOSE, "OpenGL Extension '%s' is supported.", pExtName);
        return true;
    }
    else
    {
        DebugMessage(M64MSG_VERBOSE, "OpenGL Extension '%s' is NOT supported.", pExtName);
        return false;
    }
}

bool COGLGraphicsContext::IsWglExtensionSupported(const char* pExtName)
{
    if( m_pWglExtensionStr == NULL )
        return false;

    if( strstr((const char*)m_pWglExtensionStr, pExtName) != NULL )
        return true;
    else
        return false;
}


void COGLGraphicsContext::CleanUp()
{
    CoreVideo_Quit();
    m_bReady = false;
}


void COGLGraphicsContext::Clear(ClearFlag dwFlags, uint32 color, float depth)
{
    uint32 flag=0;
    if( dwFlags&CLEAR_COLOR_BUFFER )    flag |= GL_COLOR_BUFFER_BIT;
    if( dwFlags&CLEAR_DEPTH_BUFFER )    flag |= GL_DEPTH_BUFFER_BIT;

    float r = ((color>>16)&0xFF)/255.0f;
    float g = ((color>> 8)&0xFF)/255.0f;
    float b = ((color    )&0xFF)/255.0f;
    float a = ((color>>24)&0xFF)/255.0f;
    glClearColor(r, g, b, a);
    OPENGL_CHECK_ERRORS;
    glClearDepth(depth);
    OPENGL_CHECK_ERRORS;
    glClear(flag);  //Clear color buffer and depth buffer
    OPENGL_CHECK_ERRORS;
}

void COGLGraphicsContext::UpdateFrame(bool swaponly)
{
    status.gFrameCount++;

    glFlush();
    OPENGL_CHECK_ERRORS;
    //glFinish();
    //wglSwapIntervalEXT(0);

    /*
    if (debuggerPauseCount == countToPause)
    {
        static int iShotNum = 0;
        // get width, height, allocate buffer to store image
        int width = windowSetting.uDisplayWidth;
        int height = windowSetting.uDisplayHeight;
        printf("Saving debug images: width=%i  height=%i\n", width, height);
        short *buffer = (short *) malloc(((width+3)&~3)*(height+1)*4);
        glReadBuffer( GL_FRONT );
        // set up a BMGImage struct
        struct BMGImageStruct img;
        memset(&img, 0, sizeof(BMGImageStruct));
        InitBMGImage(&img);
        img.bits = (unsigned char *) buffer;
        img.bits_per_pixel = 32;
        img.height = height;
        img.width = width;
        img.scan_width = width * 4;
        // store the RGB color image
        char chFilename[64];
        sprintf(chFilename, "dbg_rgb_%03i.png", iShotNum);
        glReadPixels(0,0,width,height, GL_BGRA, GL_UNSIGNED_BYTE, buffer);
        WritePNG(chFilename, img);
        // store the Z buffer
        sprintf(chFilename, "dbg_Z_%03i.png", iShotNum);
        glReadPixels(0,0,width,height, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, buffer);
        //img.bits_per_pixel = 16;
        //img.scan_width = width * 2;
        WritePNG(chFilename, img);
        // dump a subset of the Z data
        for (int y = 0; y < 480; y += 16)
        {
            for (int x = 0; x < 640; x+= 16)
                printf("%4hx ", buffer[y*640 + x]);
            printf("\n");
        }
        printf("\n");
        // free memory and get out of here
        free(buffer);
        iShotNum++;
        }
    */

   
   // if emulator defined a render callback function, call it before buffer swap
   if(renderCallback)
       (*renderCallback)(status.bScreenIsDrawn);

   CoreVideo_GL_SwapBuffers();
   
   /*if(options.bShowFPS)
     {
    static unsigned int lastTick=0;
    static int frames=0;
    unsigned int nowTick = SDL_GetTicks();
    frames++;
    if(lastTick + 5000 <= nowTick)
      {
         char caption[200];
         sprintf(caption, "%s v%i.%i.%i - %.3f VI/S", PLUGIN_NAME, VERSION_PRINTF_SPLIT(PLUGIN_VERSION), frames/5.0);
         CoreVideo_SetCaption(caption);
         frames = 0;
         lastTick = nowTick;
      }
     }*/

    glDepthMask(GL_TRUE);
    OPENGL_CHECK_ERRORS;
    glClearDepth(1.0f);
    OPENGL_CHECK_ERRORS;
    if( !g_curRomInfo.bForceScreenClear )
    {
        glClear(GL_DEPTH_BUFFER_BIT);
        OPENGL_CHECK_ERRORS;
    }
    else
        needCleanScene = true;

    status.bScreenIsDrawn = false;
}

bool COGLGraphicsContext::SetFullscreenMode()
{
    windowSetting.statusBarHeightToUse = 0;
    windowSetting.toolbarHeightToUse = 0;
    return true;
}

bool COGLGraphicsContext::SetWindowMode()
{
    windowSetting.statusBarHeightToUse = windowSetting.statusBarHeight;
    windowSetting.toolbarHeightToUse = windowSetting.toolbarHeight;
    return true;
}
int COGLGraphicsContext::ToggleFullscreen()
{
    if (CoreVideo_ToggleFullScreen() == M64ERR_SUCCESS)
    {
        m_bWindowed = !m_bWindowed;
        if(m_bWindowed)
            SetWindowMode();
        else
            SetFullscreenMode();
    }

    return m_bWindowed?0:1;
}

// This is a static function, will be called when the plugin DLL is initialized
void COGLGraphicsContext::InitDeviceParameters()
{
    status.isVertexShaderEnabled = false;   // Disable it for now
}

// Get methods
bool COGLGraphicsContext::IsSupportAnisotropicFiltering()
{
    return m_bSupportAnisotropicFiltering;
}

int COGLGraphicsContext::getMaxAnisotropicFiltering()
{
    return m_maxAnisotropicFiltering;
}
Commit	Line	Data
292f9317	1	/*
	2	Copyright (C) 2003 Rice1964
	3
	4	This program is free software; you can redistribute it and/or
	5	modify it under the terms of the GNU General Public License
	6	as published by the Free Software Foundation; either version 2
	7	of the License, or (at your option) any later version.
	8
	9	This program is distributed in the hope that it will be useful,
	10	but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	GNU General Public License for more details.
	13
	14	You should have received a copy of the GNU General Public License
	15	along with this program; if not, write to the Free Software
	16	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	17	*/
	18
	19	#include "osal_opengl.h"
	20
	21	#define M64P_PLUGIN_PROTOTYPES 1
	22	#include "m64p_plugin.h"
	23	#include "Config.h"
	24	#include "Debugger.h"
	25	#if SDL_VIDEO_OPENGL
	26	#include "OGLExtensions.h"
	27	#endif
	28	#include "OGLDebug.h"
	29	#include "OGLGraphicsContext.h"
	30	#include "TextureManager.h"
	31	#include "Video.h"
	32	#include "version.h"
	33
	34	COGLGraphicsContext::COGLGraphicsContext() :
	35	m_bSupportMultiTexture(false),
	36	m_bSupportTextureEnvCombine(false),
	37	m_bSupportSeparateSpecularColor(false),
	38	m_bSupportSecondColor(false),
	39	m_bSupportFogCoord(false),
	40	m_bSupportTextureObject(false),
	41	m_bSupportRescaleNormal(false),
	42	m_bSupportLODBias(false),
	43	m_bSupportTextureMirrorRepeat(false),
	44	m_bSupportTextureLOD(false),
	45	m_bSupportNVRegisterCombiner(false),
	46	m_bSupportBlendColor(false),
	47	m_bSupportBlendSubtract(false),
	48	m_bSupportNVTextureEnvCombine4(false),
	49	m_pVendorStr(NULL),
	50	m_pRenderStr(NULL),
	51	m_pExtensionStr(NULL),
	52	m_pVersionStr(NULL)
	53	{
	54	}
	55
	56
	57	COGLGraphicsContext::~COGLGraphicsContext()
	58	{
	59	}
	60
	61	bool COGLGraphicsContext::Initialize(uint32 dwWidth, uint32 dwHeight, BOOL bWindowed )
	62	{
	63	DebugMessage(M64MSG_INFO, "Initializing OpenGL Device Context.");
	64	Lock();
65
66	CGraphicsContext::Get()->m_supportTextureMirror = false;
67	CGraphicsContext::Initialize(dwWidth, dwHeight, bWindowed );
68
69	if( bWindowed )
70	{
71	windowSetting.statusBarHeightToUse = windowSetting.statusBarHeight;
72	windowSetting.toolbarHeightToUse = windowSetting.toolbarHeight;
73	}
74	else
75	{
76	windowSetting.statusBarHeightToUse = 0;
77	windowSetting.toolbarHeightToUse = 0;
78	}
79
80	int depthBufferDepth = options.OpenglDepthBufferSetting;
81	int colorBufferDepth = 32;
82	int bVerticalSync = windowSetting.bVerticalSync;
83	if( options.colorQuality == TEXTURE_FMT_A4R4G4B4 ) colorBufferDepth = 16;
84
85	// init sdl & gl
86	DebugMessage(M64MSG_VERBOSE, "Initializing video subsystem...");
87	if (CoreVideo_Init() != M64ERR_SUCCESS)
88	return false;
89
90	/* hard-coded attribute values */
91	const int iDOUBLEBUFFER = 1;
92
93	/* set opengl attributes */
94	CoreVideo_GL_SetAttribute(M64P_GL_DOUBLEBUFFER, iDOUBLEBUFFER);
95	CoreVideo_GL_SetAttribute(M64P_GL_SWAP_CONTROL, bVerticalSync);
96	CoreVideo_GL_SetAttribute(M64P_GL_BUFFER_SIZE, colorBufferDepth);
97	CoreVideo_GL_SetAttribute(M64P_GL_DEPTH_SIZE, depthBufferDepth);
98
99	/* set multisampling */
100	if (options.multiSampling > 0)
101	{
102	CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLEBUFFERS, 1);
103	if (options.multiSampling <= 2)
104	CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLESAMPLES, 2);
105	else if (options.multiSampling <= 4)
106	CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLESAMPLES, 4);
107	else if (options.multiSampling <= 8)
108	CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLESAMPLES, 8);
109	else
110	CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLESAMPLES, 16);
111	}
112
113	/* Set the video mode */
114	m64p_video_mode ScreenMode = bWindowed ? M64VIDEO_WINDOWED : M64VIDEO_FULLSCREEN;
115	m64p_video_flags flags = M64VIDEOFLAG_SUPPORT_RESIZING;
ca22e7b7	116	#if 1
	117	if (CoreVideo_SetVideoMode(800, windowSetting.uDisplayHeight, colorBufferDepth, ScreenMode, flags) != M64ERR_SUCCESS)
	118	#else
292f9317	119	if (CoreVideo_SetVideoMode(windowSetting.uDisplayWidth, windowSetting.uDisplayHeight, colorBufferDepth, ScreenMode, flags) != M64ERR_SUCCESS)
ca22e7b7	120	#endif
292f9317	121	{
	122	DebugMessage(M64MSG_ERROR, "Failed to set %i-bit video mode: %ix%i", colorBufferDepth, (int)windowSetting.uDisplayWidth, (int)windowSetting.uDisplayHeight);
	123	CoreVideo_Quit();
	124	return false;
	125	}
	126
	127	/* check that our opengl attributes were properly set */
	128	int iActual;
	129	if (CoreVideo_GL_GetAttribute(M64P_GL_DOUBLEBUFFER, &iActual) == M64ERR_SUCCESS)
	130	if (iActual != iDOUBLEBUFFER)
	131	DebugMessage(M64MSG_WARNING, "Failed to set GL_DOUBLEBUFFER to %i. (it's %i)", iDOUBLEBUFFER, iActual);
	132	if (CoreVideo_GL_GetAttribute(M64P_GL_SWAP_CONTROL, &iActual) == M64ERR_SUCCESS)
	133	if (iActual != bVerticalSync)
	134	DebugMessage(M64MSG_WARNING, "Failed to set GL_SWAP_CONTROL to %i. (it's %i)", bVerticalSync, iActual);
	135	if (CoreVideo_GL_GetAttribute(M64P_GL_BUFFER_SIZE, &iActual) == M64ERR_SUCCESS)
	136	if (iActual != colorBufferDepth)
	137	DebugMessage(M64MSG_WARNING, "Failed to set GL_BUFFER_SIZE to %i. (it's %i)", colorBufferDepth, iActual);
	138	if (CoreVideo_GL_GetAttribute(M64P_GL_DEPTH_SIZE, &iActual) == M64ERR_SUCCESS)
	139	if (iActual != depthBufferDepth)
	140	DebugMessage(M64MSG_WARNING, "Failed to set GL_DEPTH_SIZE to %i. (it's %i)", depthBufferDepth, iActual);
	141
	142	#if SDL_VIDEO_OPENGL
	143	/* Get function pointers to OpenGL extensions (blame Microsoft Windows for this) */
	144	OGLExtensions_Init();
	145	#endif
	146
	147	char caption[500];
	148	sprintf(caption, "%s v%i.%i.%i", PLUGIN_NAME, VERSION_PRINTF_SPLIT(PLUGIN_VERSION));
	149	CoreVideo_SetCaption(caption);
	150	SetWindowMode();
	151
	152	InitState();
	153	InitOGLExtension();
	154	sprintf(m_strDeviceStats, "%.60s - %.128s : %.60s", m_pVendorStr, m_pRenderStr, m_pVersionStr);
	155	TRACE0(m_strDeviceStats);
	156	DebugMessage(M64MSG_INFO, "Using OpenGL: %s", m_strDeviceStats);
	157
	158	Unlock();
	159
	160	Clear(CLEAR_COLOR_AND_DEPTH_BUFFER); // Clear buffers
	161	UpdateFrame();
	162	Clear(CLEAR_COLOR_AND_DEPTH_BUFFER);
	163	UpdateFrame();
	164
	165	m_bReady = true;
	166	status.isVertexShaderEnabled = false;
	167
	168	return true;
	169	}
	170
	171	bool COGLGraphicsContext::ResizeInitialize(uint32 dwWidth, uint32 dwHeight, BOOL bWindowed )
	172	{
	173	Lock();
	174
	175	CGraphicsContext::Initialize(dwWidth, dwHeight, bWindowed );
	176
	177	int depthBufferDepth = options.OpenglDepthBufferSetting;
	178	int colorBufferDepth = 32;
	179	int bVerticalSync = windowSetting.bVerticalSync;
	180	if( options.colorQuality == TEXTURE_FMT_A4R4G4B4 ) colorBufferDepth = 16;
	181
	182	/* hard-coded attribute values */
	183	const int iDOUBLEBUFFER = 1;
	184
185	/* set opengl attributes */
186	CoreVideo_GL_SetAttribute(M64P_GL_DOUBLEBUFFER, iDOUBLEBUFFER);
187	CoreVideo_GL_SetAttribute(M64P_GL_SWAP_CONTROL, bVerticalSync);
188	CoreVideo_GL_SetAttribute(M64P_GL_BUFFER_SIZE, colorBufferDepth);
189	CoreVideo_GL_SetAttribute(M64P_GL_DEPTH_SIZE, depthBufferDepth);
190
191	/* set multisampling */
192	if (options.multiSampling > 0)
193	{
194	CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLEBUFFERS, 1);
195	if (options.multiSampling <= 2)
196	CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLESAMPLES, 2);
197	else if (options.multiSampling <= 4)
198	CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLESAMPLES, 4);
199	else if (options.multiSampling <= 8)
200	CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLESAMPLES, 8);
201	else
202	CoreVideo_GL_SetAttribute(M64P_GL_MULTISAMPLESAMPLES, 16);
203	}
204
205	/* Call Mupen64plus core Video Extension to resize the window, which will create a new OpenGL Context under SDL */
206	if (CoreVideo_ResizeWindow(windowSetting.uDisplayWidth, windowSetting.uDisplayHeight) != M64ERR_SUCCESS)
207	{
208	DebugMessage(M64MSG_ERROR, "Failed to set %i-bit video mode: %ix%i", colorBufferDepth, (int)windowSetting.uDisplayWidth, (int)windowSetting.uDisplayHeight);
209	CoreVideo_Quit();
210	return false;
211	}
212
213	InitState();
214	Unlock();
215
216	Clear(CLEAR_COLOR_AND_DEPTH_BUFFER); // Clear buffers
217	UpdateFrame();
218	Clear(CLEAR_COLOR_AND_DEPTH_BUFFER);
219	UpdateFrame();
220
221	return true;
222	}
223
224	void COGLGraphicsContext::InitState(void)
225	{
226	m_pRenderStr = glGetString(GL_RENDERER);
227	m_pExtensionStr = glGetString(GL_EXTENSIONS);
228	m_pVersionStr = glGetString(GL_VERSION);
229	m_pVendorStr = glGetString(GL_VENDOR);
230	glMatrixMode(GL_PROJECTION);
231	OPENGL_CHECK_ERRORS;
232	glLoadIdentity();
233	OPENGL_CHECK_ERRORS;
234
235	glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
236	OPENGL_CHECK_ERRORS;
237	glClearDepth(1.0f);
238	OPENGL_CHECK_ERRORS;
239
240	#if SDL_VIDEO_OPENGL
241	glShadeModel(GL_SMOOTH);
242	OPENGL_CHECK_ERRORS;
243
244	//position viewer
245	//glMatrixMode(GL_MODELVIEW);
246	//glLoadIdentity();
247
248	glDisable(GL_ALPHA_TEST);
249	OPENGL_CHECK_ERRORS;
250	#endif
251
252	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
253	OPENGL_CHECK_ERRORS;
254	glDisable(GL_BLEND);
255	OPENGL_CHECK_ERRORS;
256
257	glFrontFace(GL_CCW);
258	OPENGL_CHECK_ERRORS;
259	glDisable(GL_CULL_FACE);
260	OPENGL_CHECK_ERRORS;
261	#if SDL_VIDEO_OPENGL
262	glDisable(GL_NORMALIZE);
263	OPENGL_CHECK_ERRORS;
264	#endif
265
266	glDepthFunc(GL_LEQUAL);
267	OPENGL_CHECK_ERRORS;
268	glEnable(GL_DEPTH_TEST);
269	OPENGL_CHECK_ERRORS;
270
271	#if SDL_VIDEO_OPENGL
272	glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
273	OPENGL_CHECK_ERRORS;
274	#endif
275
276	glEnable(GL_BLEND);
277	OPENGL_CHECK_ERRORS;
278	#if SDL_VIDEO_OPENGL
279	glEnable(GL_ALPHA_TEST);
280	OPENGL_CHECK_ERRORS;
281
282	glMatrixMode(GL_PROJECTION);
283	OPENGL_CHECK_ERRORS;
284	glLoadIdentity();
285	OPENGL_CHECK_ERRORS;
286
287	glDepthRange(-1, 1);
288
289	#elif SDL_VIDEO_OPENGL_ES2
0c9dca78	290	glDepthRangef(-1.0f, 1.0f);
292f9317	291	#endif
	292	OPENGL_CHECK_ERRORS;
	293	}
	294
	295	void COGLGraphicsContext::InitOGLExtension(void)
	296	{
0c9dca78	297	#if SDL_VIDEO_OPENGL
292f9317	298	// important extension features, it is very bad not to have these feature
	299	m_bSupportMultiTexture = IsExtensionSupported(OSAL_GL_ARB_MULTITEXTURE);
	300	m_bSupportTextureEnvCombine = IsExtensionSupported("GL_EXT_texture_env_combine");
	301
	302	m_bSupportSeparateSpecularColor = IsExtensionSupported("GL_EXT_separate_specular_color");
	303	m_bSupportSecondColor = IsExtensionSupported("GL_EXT_secondary_color");
	304	m_bSupportFogCoord = IsExtensionSupported("GL_EXT_fog_coord");
	305	m_bSupportTextureObject = IsExtensionSupported("GL_EXT_texture_object");
	306
	307	// Optional extension features
	308	m_bSupportRescaleNormal = IsExtensionSupported("GL_EXT_rescale_normal");
	309	m_bSupportLODBias = IsExtensionSupported("GL_EXT_texture_lod_bias");
	310	m_bSupportAnisotropicFiltering = IsExtensionSupported("GL_EXT_texture_filter_anisotropic");
0c9dca78	311	#else
	312	m_bSupportMultiTexture = true;
	313	m_bSupportFogCoord = false;
	314	m_bSupportAnisotropicFiltering = true;
	315	#endif
292f9317	316	// Compute maxAnisotropicFiltering
	317	m_maxAnisotropicFiltering = 0;
	318
	319	if( m_bSupportAnisotropicFiltering
	320	&& (options.anisotropicFiltering == 2
	321	\|\| options.anisotropicFiltering == 4
	322	\|\| options.anisotropicFiltering == 8
	323	\|\| options.anisotropicFiltering == 16))
	324	{
	325	//Get the max value of aniso that the graphic card support
	326	glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &m_maxAnisotropicFiltering);
	327	OPENGL_CHECK_ERRORS;
	328
	329	// If user want more aniso than hardware can do
	330	if(options.anisotropicFiltering > (uint32) m_maxAnisotropicFiltering)
	331	{
	332	DebugMessage(M64MSG_INFO, "A value of '%i' is set for AnisotropicFiltering option but the hardware has a maximum value of '%i' so this will be used", options.anisotropicFiltering, m_maxAnisotropicFiltering);
	333	}
	334
	335	//check if user want less anisotropy than hardware can do
	336	if((uint32) m_maxAnisotropicFiltering > options.anisotropicFiltering)
	337	m_maxAnisotropicFiltering = options.anisotropicFiltering;
	338	}
0c9dca78	339
0c9dca78	340	#if SDL_VIDEO_OPENGL
292f9317	341	// Nvidia only extension features (optional)
	342	m_bSupportNVRegisterCombiner = IsExtensionSupported("GL_NV_register_combiners");
	343	m_bSupportTextureMirrorRepeat = IsExtensionSupported("GL_IBM_texture_mirrored_repeat") \|\| IsExtensionSupported("ARB_texture_mirrored_repeat");
	344	m_supportTextureMirror = m_bSupportTextureMirrorRepeat;
	345	m_bSupportTextureLOD = IsExtensionSupported("GL_EXT_texture_lod");
	346	m_bSupportBlendColor = IsExtensionSupported("GL_EXT_blend_color");
	347	m_bSupportBlendSubtract = IsExtensionSupported("GL_EXT_blend_subtract");
	348	m_bSupportNVTextureEnvCombine4 = IsExtensionSupported("GL_NV_texture_env_combine4");
0c9dca78	349	#else
	350	m_supportTextureMirror = true;
	351	#endif
292f9317	352	}
	353
	354	bool COGLGraphicsContext::IsExtensionSupported(const char* pExtName)
	355	{
	356	if (strstr((const char*)m_pExtensionStr, pExtName) != NULL)
	357	{
	358	DebugMessage(M64MSG_VERBOSE, "OpenGL Extension '%s' is supported.", pExtName);
	359	return true;
	360	}
	361	else
	362	{
	363	DebugMessage(M64MSG_VERBOSE, "OpenGL Extension '%s' is NOT supported.", pExtName);
	364	return false;
	365	}
	366	}
	367
	368	bool COGLGraphicsContext::IsWglExtensionSupported(const char* pExtName)
	369	{
	370	if( m_pWglExtensionStr == NULL )
	371	return false;
	372
	373	if( strstr((const char*)m_pWglExtensionStr, pExtName) != NULL )
	374	return true;
	375	else
	376	return false;
	377	}
	378
	379
	380	void COGLGraphicsContext::CleanUp()
	381	{
	382	CoreVideo_Quit();
	383	m_bReady = false;
	384	}
	385
	386
	387	void COGLGraphicsContext::Clear(ClearFlag dwFlags, uint32 color, float depth)
	388	{
	389	uint32 flag=0;
	390	if( dwFlags&CLEAR_COLOR_BUFFER ) flag \|= GL_COLOR_BUFFER_BIT;
	391	if( dwFlags&CLEAR_DEPTH_BUFFER ) flag \|= GL_DEPTH_BUFFER_BIT;
	392
	393	float r = ((color>>16)&0xFF)/255.0f;
	394	float g = ((color>> 8)&0xFF)/255.0f;
	395	float b = ((color )&0xFF)/255.0f;
	396	float a = ((color>>24)&0xFF)/255.0f;
	397	glClearColor(r, g, b, a);
	398	OPENGL_CHECK_ERRORS;
	399	glClearDepth(depth);
	400	OPENGL_CHECK_ERRORS;
	401	glClear(flag); //Clear color buffer and depth buffer
	402	OPENGL_CHECK_ERRORS;
	403	}
	404
	405	void COGLGraphicsContext::UpdateFrame(bool swaponly)
	406	{
	407	status.gFrameCount++;
	408
	409	glFlush();
	410	OPENGL_CHECK_ERRORS;
	411	//glFinish();
	412	//wglSwapIntervalEXT(0);
	413
	414	/*
	415	if (debuggerPauseCount == countToPause)
416	{
417	static int iShotNum = 0;
418	// get width, height, allocate buffer to store image
419	int width = windowSetting.uDisplayWidth;
420	int height = windowSetting.uDisplayHeight;
421	printf("Saving debug images: width=%i height=%i\n", width, height);
422	short buffer = (short ) malloc(((width+3)&~3)(height+1)4);
423	glReadBuffer( GL_FRONT );
424	// set up a BMGImage struct
425	struct BMGImageStruct img;
426	memset(&img, 0, sizeof(BMGImageStruct));
427	InitBMGImage(&img);
428	img.bits = (unsigned char *) buffer;
429	img.bits_per_pixel = 32;
430	img.height = height;
431	img.width = width;
432	img.scan_width = width * 4;
433	// store the RGB color image
434	char chFilename[64];
435	sprintf(chFilename, "dbg_rgb_%03i.png", iShotNum);
436	glReadPixels(0,0,width,height, GL_BGRA, GL_UNSIGNED_BYTE, buffer);
437	WritePNG(chFilename, img);
438	// store the Z buffer
439	sprintf(chFilename, "dbg_Z_%03i.png", iShotNum);
440	glReadPixels(0,0,width,height, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, buffer);
441	//img.bits_per_pixel = 16;
442	//img.scan_width = width * 2;
443	WritePNG(chFilename, img);
444	// dump a subset of the Z data
445	for (int y = 0; y < 480; y += 16)
446	{
447	for (int x = 0; x < 640; x+= 16)
448	printf("%4hx ", buffer[y*640 + x]);
449	printf("\n");
450	}
451	printf("\n");
452	// free memory and get out of here
453	free(buffer);
454	iShotNum++;
455	}
456	*/
457
458
459	// if emulator defined a render callback function, call it before buffer swap
460	if(renderCallback)
461	(*renderCallback)(status.bScreenIsDrawn);
462
463	CoreVideo_GL_SwapBuffers();
464
465	/*if(options.bShowFPS)
466	{
467	static unsigned int lastTick=0;
468	static int frames=0;
469	unsigned int nowTick = SDL_GetTicks();
470	frames++;
471	if(lastTick + 5000 <= nowTick)
472	{
473	char caption[200];
474	sprintf(caption, "%s v%i.%i.%i - %.3f VI/S", PLUGIN_NAME, VERSION_PRINTF_SPLIT(PLUGIN_VERSION), frames/5.0);
475	CoreVideo_SetCaption(caption);
476	frames = 0;
477	lastTick = nowTick;
478	}
479	}*/
480
481	glDepthMask(GL_TRUE);
482	OPENGL_CHECK_ERRORS;
483	glClearDepth(1.0f);
484	OPENGL_CHECK_ERRORS;
485	if( !g_curRomInfo.bForceScreenClear )
486	{
487	glClear(GL_DEPTH_BUFFER_BIT);
488	OPENGL_CHECK_ERRORS;
489	}
490	else
491	needCleanScene = true;
492
493	status.bScreenIsDrawn = false;
494	}
495
496	bool COGLGraphicsContext::SetFullscreenMode()
497	{
498	windowSetting.statusBarHeightToUse = 0;
499	windowSetting.toolbarHeightToUse = 0;
500	return true;
501	}
502
503	bool COGLGraphicsContext::SetWindowMode()
504	{
505	windowSetting.statusBarHeightToUse = windowSetting.statusBarHeight;
506	windowSetting.toolbarHeightToUse = windowSetting.toolbarHeight;
507	return true;
508	}
509	int COGLGraphicsContext::ToggleFullscreen()
510	{
511	if (CoreVideo_ToggleFullScreen() == M64ERR_SUCCESS)
512	{
513	m_bWindowed = !m_bWindowed;
514	if(m_bWindowed)
515	SetWindowMode();
516	else
517	SetFullscreenMode();
518	}
519
520	return m_bWindowed?0:1;
521	}
522
523	// This is a static function, will be called when the plugin DLL is initialized
524	void COGLGraphicsContext::InitDeviceParameters()
525	{
526	status.isVertexShaderEnabled = false; // Disable it for now
527	}
528
529	// Get methods
530	bool COGLGraphicsContext::IsSupportAnisotropicFiltering()
531	{
532	return m_bSupportAnisotropicFiltering;
533	}
534
535	int COGLGraphicsContext::getMaxAnisotropicFiltering()
536	{
537	return m_maxAnisotropicFiltering;
538	}