Xash3D FWGS engine.
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#include "common.h"
#include "client.h"
#include "library.h"
#include "cl_tent.h"
#include "platform/platform.h"
#include "vid_common.h"
struct ref_state_s ref;
ref_globals_t refState;
convar_t *gl_vsync;
convar_t *gl_showtextures;
convar_t *r_decals;
convar_t *r_adjust_fov;
convar_t *r_showtree;
convar_t *gl_wgl_msaa_samples;
convar_t *gl_clear;
convar_t *r_refdll;
void R_GetTextureParms( int *w, int *h, int texnum )
{
if( w ) *w = REF_GET_PARM( PARM_TEX_WIDTH, texnum );
if( h ) *h = REF_GET_PARM( PARM_TEX_HEIGHT, texnum );
}
/*
================
GL_FreeImage
Frees image by name
================
*/
void GAME_EXPORT GL_FreeImage( const char *name )
{
int texnum;
if( !ref.initialized )
return;
if(( texnum = ref.dllFuncs.GL_FindTexture( name )) != 0 )
ref.dllFuncs.GL_FreeTexture( texnum );
}
void R_UpdateRefState( void )
{
refState.time = cl.time;
refState.oldtime = cl.oldtime;
refState.realtime = host.realtime;
refState.frametime = host.frametime;
}
void GL_RenderFrame( const ref_viewpass_t *rvp )
{
R_UpdateRefState();
VectorCopy( rvp->vieworigin, refState.vieworg );
VectorCopy( rvp->viewangles, refState.viewangles );
AngleVectors( refState.viewangles, refState.vforward, refState.vright, refState.vup );
ref.dllFuncs.GL_RenderFrame( rvp );
}
static int pfnEngineGetParm( int parm, int arg )
{
return CL_RenderGetParm( parm, arg, false ); // prevent recursion
}
static world_static_t *pfnGetWorld( void )
{
return &world;
}
static void pfnStudioEvent( const mstudioevent_t *event, const cl_entity_t *e )
{
clgame.dllFuncs.pfnStudioEvent( event, e );
}
static efrag_t* pfnGetEfragsFreeList( void )
{
return clgame.free_efrags;
}
static void pfnSetEfragsFreeList( efrag_t *list )
{
clgame.free_efrags = list;
}
static model_t *pfnGetDefaultSprite( enum ref_defaultsprite_e spr )
{
switch( spr )
{
case REF_DOT_SPRITE: return cl_sprite_dot;
case REF_CHROME_SPRITE: return cl_sprite_shell;
default: Host_Error( "GetDefaultSprite: unknown sprite %d\n", spr );
}
return NULL;
}
static void *pfnMod_Extradata( int type, model_t *m )
{
switch( type )
{
case mod_alias: return Mod_AliasExtradata( m );
case mod_studio: return Mod_StudioExtradata( m );
case mod_sprite: // fallthrough
case mod_brush: return NULL;
default: Host_Error( "Mod_Extradata: unknown type %d\n", type );
}
return NULL;
}
static model_t *pfnMod_GetCurrentLoadingModel( void )
{
return loadmodel;
}
static void pfnMod_SetCurrentLoadingModel( model_t *m )
{
loadmodel = m;
}
static void pfnGetPredictedOrigin( vec3_t v )
{
VectorCopy( cl.simorg, v );
}
static color24 *pfnCL_GetPaletteColor( int color ) // clgame.palette[color]
{
return &clgame.palette[color];
}
static void pfnCL_GetScreenInfo( int *width, int *height ) // clgame.scrInfo, ptrs may be NULL
{
if( width ) *width = clgame.scrInfo.iWidth;
if( height ) *height = clgame.scrInfo.iHeight;
}
static void pfnSetLocalLightLevel( int level )
{
cl.local.light_level = level;
}
/*
===============
pfnPlayerInfo
===============
*/
static player_info_t *pfnPlayerInfo( int index )
{
if( index == -1 ) // special index for menu
return &gameui.playerinfo;
if( index < 0 || index > cl.maxclients )
return NULL;
return &cl.players[index];
}
/*
===============
pfnGetPlayerState
===============
*/
static entity_state_t *R_StudioGetPlayerState( int index )
{
if( index < 0 || index >= cl.maxclients )
return NULL;
return &cl.frames[cl.parsecountmod].playerstate[index];
}
static int pfnGetStudioModelInterface( int version, struct r_studio_interface_s **ppinterface, struct engine_studio_api_s *pstudio )
{
return clgame.dllFuncs.pfnGetStudioModelInterface ?
clgame.dllFuncs.pfnGetStudioModelInterface( version, ppinterface, pstudio ) :
0;
}
static byte *pfnImage_GetPool( void )
{
return host.imagepool;
}
static const bpc_desc_t *pfnImage_GetPFDesc( int idx )
{
return &PFDesc[idx];
}
static void pfnDrawNormalTriangles( void )
{
clgame.dllFuncs.pfnDrawNormalTriangles();
}
static void pfnDrawTransparentTriangles( void )
{
clgame.dllFuncs.pfnDrawTransparentTriangles();
}
static screenfade_t *pfnRefGetScreenFade( void )
{
return &clgame.fade;
}
/*
===============
R_DoResetGamma
gamma will be reset for
some type of screenshots
===============
*/
static qboolean R_DoResetGamma( void )
{
switch( cls.scrshot_action )
{
case scrshot_envshot:
case scrshot_skyshot:
return true;
default:
return false;
}
}
static qboolean R_Init_Video_( const int type )
{
host.apply_opengl_config = true;
Cbuf_AddText( va( "exec %s.cfg", ref.dllFuncs.R_GetConfigName()));
Cbuf_Execute();
host.apply_opengl_config = false;
return R_Init_Video( type );
}
static ref_api_t gEngfuncs =
{
pfnEngineGetParm,
(void*)Cvar_Get,
(void*)Cvar_FindVarExt,
Cvar_VariableValue,
Cvar_VariableString,
Cvar_SetValue,
Cvar_Set,
(void*)Cvar_RegisterVariable,
Cvar_FullSet,
Cmd_AddRefCommand,
Cmd_RemoveCommand,
Cmd_Argc,
Cmd_Argv,
Cmd_Args,
Cbuf_AddText,
Cbuf_InsertText,
Cbuf_Execute,
Con_Printf,
Con_DPrintf,
Con_Reportf,
Con_NPrintf,
Con_NXPrintf,
CL_CenterPrint,
Con_DrawStringLen,
Con_DrawString,
CL_DrawCenterPrint,
CL_GetLocalPlayer,
CL_GetViewModel,
CL_GetEntityByIndex,
R_BeamGetEntity,
CL_GetWaterEntity,
CL_AddVisibleEntity,
Mod_SampleSizeForFace,
Mod_BoxVisible,
pfnGetWorld,
Mod_PointInLeaf,
Mod_CreatePolygonsForHull,
R_StudioSlerpBones,
R_StudioCalcBoneQuaternion,
R_StudioCalcBonePosition,
R_StudioGetAnim,
pfnStudioEvent,
CL_DrawEFX,
CL_ThinkParticle,
R_FreeDeadParticles,
CL_AllocParticleFast,
CL_AllocElight,
pfnGetDefaultSprite,
R_StoreEfrags,
Mod_ForName,
pfnMod_Extradata,
CL_ModelHandle,
pfnMod_GetCurrentLoadingModel,
pfnMod_SetCurrentLoadingModel,
CL_GetRemapInfoForEntity,
CL_AllocRemapInfo,
CL_FreeRemapInfo,
CL_UpdateRemapInfo,
CL_ExtraUpdate,
Host_Error,
COM_SetRandomSeed,
COM_RandomFloat,
COM_RandomLong,
pfnRefGetScreenFade,
CL_TextMessageGet,
pfnGetPredictedOrigin,
pfnCL_GetPaletteColor,
pfnCL_GetScreenInfo,
pfnSetLocalLightLevel,
Sys_CheckParm,
pfnPlayerInfo,
R_StudioGetPlayerState,
Mod_CacheCheck,
Mod_LoadCacheFile,
Mod_Calloc,
pfnGetStudioModelInterface,
_Mem_AllocPool,
_Mem_FreePool,
_Mem_Alloc,
_Mem_Realloc,
_Mem_Free,
COM_LoadLibrary,
COM_FreeLibrary,
COM_GetProcAddress,
FS_LoadFile,
COM_ParseFile,
FS_FileExists,
FS_AllowDirectPaths,
R_Init_Video_,
R_Free_Video,
GL_SetAttribute,
GL_GetAttribute,
GL_GetProcAddress,
GL_SwapBuffers,
SW_CreateBuffer,
SW_LockBuffer,
SW_UnlockBuffer,
BuildGammaTable,
LightToTexGamma,
R_DoResetGamma,
CL_GetLightStyle,
CL_GetDynamicLight,
CL_GetEntityLight,
R_FatPVS,
GL_GetOverviewParms,
Sys_DoubleTime,
pfnGetPhysent,
pfnTraceSurface,
PM_TraceLine,
CL_VisTraceLine,
CL_TraceLine,
pfnGetMoveVars,
Image_AddCmdFlags,
Image_SetForceFlags,
Image_ClearForceFlags,
Image_CustomPalette,
Image_Process,
FS_LoadImage,
FS_SaveImage,
FS_CopyImage,
FS_FreeImage,
Image_SetMDLPointer,
pfnImage_GetPool,
pfnImage_GetPFDesc,
pfnDrawNormalTriangles,
pfnDrawTransparentTriangles,
&clgame.drawFuncs
};
static void R_UnloadProgs( void )
{
if( !ref.hInstance ) return;
// deinitialize renderer
ref.dllFuncs.R_Shutdown();
Cvar_FullSet( "host_refloaded", "0", FCVAR_READ_ONLY );
COM_FreeLibrary( ref.hInstance );
ref.hInstance = NULL;
memset( &refState, 0, sizeof( refState ));
memset( &ref.dllFuncs, 0, sizeof( ref.dllFuncs ));
Cvar_Unlink( FCVAR_RENDERINFO | FCVAR_GLCONFIG );
Cmd_Unlink( CMD_REFDLL );
}
static void CL_FillTriAPIFromRef( triangleapi_t *dst, const ref_interface_t *src )
{
dst->version = TRI_API_VERSION;
dst->Begin = src->Begin;
dst->RenderMode = TriRenderMode;
dst->End = src->End;
dst->Color4f = TriColor4f;
dst->Color4ub = TriColor4ub;
dst->TexCoord2f = src->TexCoord2f;
dst->Vertex3f = src->Vertex3f;
dst->Vertex3fv = src->Vertex3fv;
dst->Brightness = TriBrightness;
dst->CullFace = TriCullFace;
dst->SpriteTexture = TriSpriteTexture;
dst->WorldToScreen = TriWorldToScreen;
dst->Fog = src->Fog;
dst->ScreenToWorld = src->ScreenToWorld;
dst->GetMatrix = src->GetMatrix;
dst->BoxInPVS = TriBoxInPVS;
dst->LightAtPoint = TriLightAtPoint;
dst->Color4fRendermode = TriColor4fRendermode;
dst->FogParams = src->FogParams;
}
static qboolean R_LoadProgs( const char *name )
{
extern triangleapi_t gTriApi;
static ref_api_t gpEngfuncs;
REFAPI GetRefAPI; // single export
if( ref.hInstance ) R_UnloadProgs();
FS_AllowDirectPaths( true );
if( !(ref.hInstance = COM_LoadLibrary( name, false, true ) ))
{
FS_AllowDirectPaths( false );
Con_Reportf( "R_LoadProgs: can't load renderer library %s: %s\n", name, COM_GetLibraryError() );
return false;
}
FS_AllowDirectPaths( false );
if( !( GetRefAPI = (REFAPI)COM_GetProcAddress( ref.hInstance, GET_REF_API )) )
{
COM_FreeLibrary( ref.hInstance );
Con_Reportf( "R_LoadProgs: can't find GetRefAPI entry point in %s\n", name );
ref.hInstance = NULL;
return false;
}
// make local copy of engfuncs to prevent overwrite it with user dll
memcpy( &gpEngfuncs, &gEngfuncs, sizeof( gpEngfuncs ));
if( !GetRefAPI( REF_API_VERSION, &ref.dllFuncs, &gpEngfuncs, &refState ))
{
COM_FreeLibrary( ref.hInstance );
Con_Reportf( "R_LoadProgs: can't init renderer API: wrong version\n" );
ref.hInstance = NULL;
return false;
}
refState.developer = host_developer.value;
if( !ref.dllFuncs.R_Init( ) )
{
COM_FreeLibrary( ref.hInstance );
Con_Reportf( "R_LoadProgs: can't init renderer!\n" ); //, ref.dllFuncs.R_GetInitError() );
ref.hInstance = NULL;
return false;
}
Cvar_FullSet( "host_refloaded", "1", FCVAR_READ_ONLY );
ref.initialized = true;
// initialize TriAPI callbacks
CL_FillTriAPIFromRef( &gTriApi, &ref.dllFuncs );
return true;
}
void R_Shutdown( void )
{
int i;
model_t *mod;
// release SpriteTextures
for( i = 1, mod = clgame.sprites; i < MAX_CLIENT_SPRITES; i++, mod++ )
{
if( !mod->name[0] ) continue;
Mod_FreeModel( mod );
}
memset( clgame.sprites, 0, sizeof( clgame.sprites ));
// correctly free all models before render unload
// change this if need add online render changing
Mod_FreeAll();
R_UnloadProgs();
ref.initialized = false;
}
static void R_GetRendererName( char *dest, size_t size, const char *opt )
{
if( !Q_strstr( opt, "." OS_LIB_EXT ))
{
const char *format;
#ifdef XASH_INTERNAL_GAMELIBS
if( !Q_strcmp( opt, "ref_" ))
format = "%s";
else
format = "ref_%s";
#else
if( !Q_strcmp( opt, "ref_" ))
format = OS_LIB_PREFIX "%s." OS_LIB_EXT;
else
format = OS_LIB_PREFIX "ref_%s." OS_LIB_EXT;
#endif
Q_snprintf( dest, size, format, opt );
}
else
{
// full path
Q_strcpy( dest, opt );
}
}
static qboolean R_LoadRenderer( const char *refopt )
{
string refdll;
R_GetRendererName( refdll, sizeof( refdll ), refopt );
Con_Printf( "Loading renderer: %s -> %s\n", refopt, refdll );
if( !R_LoadProgs( refdll ))
{
R_Shutdown();
Sys_Warn( S_ERROR "Can't initialize %s renderer!\n", refdll );
return false;
}
Con_Reportf( "Renderer %s initialized\n", refdll );
return true;
}
static void SetWidthAndHeightFromCommandLine( void )
{
int width, height;
Sys_GetIntFromCmdLine( "-width", &width );
Sys_GetIntFromCmdLine( "-height", &height );
if( width < 1 || height < 1 )
{
// Not specified or invalid, so don't bother.
return;
}
R_SaveVideoMode( width, height, width, height );
}
static void SetFullscreenModeFromCommandLine( void )
{
#if !XASH_MOBILE_PLATFORM
if ( Sys_CheckParm("-fullscreen") )
{
Cvar_Set( "fullscreen", "1" );
}
else if ( Sys_CheckParm( "-windowed" ) )
{
Cvar_Set( "fullscreen", "0" );
}
#endif
}
void R_CollectRendererNames( void )
{
const char *renderers[] = DEFAULT_RENDERERS;
int i;
ref.numRenderers = 0;
for( i = 0; i < DEFAULT_RENDERERS_LEN; i++ )
{
string temp;
void *dll, *pfn;
R_GetRendererName( temp, sizeof( temp ), renderers[i] );
dll = COM_LoadLibrary( temp, false, true );
if( !dll )
{
Con_Reportf( "R_CollectRendererNames: can't load library %s: %s\n", temp, COM_GetLibraryError() );
continue;
}
pfn = COM_GetProcAddress( dll, GET_REF_API );
if( !pfn )
{
Con_Reportf( "R_CollectRendererNames: can't find API entry point in %s\n", temp );
COM_FreeLibrary( dll );
continue;
}
Q_strncpy( ref.shortNames[i], renderers[i], sizeof( ref.shortNames[i] ));
pfn = COM_GetProcAddress( dll, GET_REF_HUMANREADABLE_NAME );
if( !pfn ) // just in case
{
Con_Reportf( "R_CollectRendererNames: can't find GetHumanReadableName export in %s\n", temp );
Q_strncpy( ref.readableNames[i], renderers[i], sizeof( ref.readableNames[i] ));
}
else
{
REF_HUMANREADABLE_NAME GetHumanReadableName = (REF_HUMANREADABLE_NAME)pfn;
GetHumanReadableName( ref.readableNames[i], sizeof( ref.readableNames[i] ));
}
Con_Printf( "Found renderer %s: %s\n", ref.shortNames[i], ref.readableNames[i] );
ref.numRenderers++;
COM_FreeLibrary( dll );
}
}
qboolean R_Init( void )
{
qboolean success = false;
string refopt;
gl_vsync = Cvar_Get( "gl_vsync", "0", FCVAR_ARCHIVE, "enable vertical syncronization" );
gl_showtextures = Cvar_Get( "r_showtextures", "0", FCVAR_CHEAT, "show all uploaded textures" );
r_adjust_fov = Cvar_Get( "r_adjust_fov", "1", FCVAR_ARCHIVE, "making FOV adjustment for wide-screens" );
r_decals = Cvar_Get( "r_decals", "4096", FCVAR_ARCHIVE, "sets the maximum number of decals" );
gl_wgl_msaa_samples = Cvar_Get( "gl_wgl_msaa_samples", "0", FCVAR_GLCONFIG, "samples number for multisample anti-aliasing" );
gl_clear = Cvar_Get( "gl_clear", "0", FCVAR_ARCHIVE, "clearing screen after each frame" );
r_showtree = Cvar_Get( "r_showtree", "0", FCVAR_ARCHIVE, "build the graph of visible BSP tree" );
r_refdll = Cvar_Get( "r_refdll", "", FCVAR_RENDERINFO|FCVAR_VIDRESTART, "choose renderer implementation, if supported" );
// cvars are created, execute video config
Cbuf_AddText( "exec video.cfg" );
Cbuf_Execute();
// Set screen resolution and fullscreen mode if passed in on command line.
// this is done after executing video.cfg, as the command line values should take priority.
SetWidthAndHeightFromCommandLine();
SetFullscreenModeFromCommandLine();
R_CollectRendererNames();
// command line have priority
if( !Sys_GetParmFromCmdLine( "-ref", refopt ) )
{
// r_refdll is set to empty by default, so we can change hardcoded defaults just in case
Q_strncpy( refopt, COM_CheckString( r_refdll->string ) ?
r_refdll->string : DEFAULT_ACCELERATED_RENDERER, sizeof( refopt ) );
}
if( !(success = R_LoadRenderer( refopt )))
{
// check if we are tried to load default accelearated renderer already
// and if not, load it first
if( Q_strcmp( refopt, DEFAULT_ACCELERATED_RENDERER ) )
{
success = R_LoadRenderer( refopt );
}
// software renderer is the last chance...
if( !success )
{
success = R_LoadRenderer( DEFAULT_SOFTWARE_RENDERER );
}
}
if( !success )
{
Host_Error( "Can't initialize any renderer. Check your video drivers!" );
return false;
}
SCR_Init();
return true;
}