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jedi-academy/codemp/sdl/sdl_glimp.cpp
Jonathan Gray 804687385c avoid enum to int conversions
2013-05-02 13:47:50 +10:00

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/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
This file is part of Quake III Arena source code.
Quake III Arena source code 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.
Quake III Arena source code 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 Quake III Arena source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
#ifdef USE_LOCAL_HEADERS
# include "SDL.h"
#else
# include <SDL.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "sdl_local.h"
#include "../renderer/tr_local.h"
#ifdef notyet
#include "sdl_icon.h"
#endif
#define CLIENT_WINDOW_TITLE "Jedi Outcast"
#define CLIENT_WINDOW_MIN_TITLE "JO"
/* Just hack it for now. */
#ifdef MACOS_X
#include <OpenGL/OpenGL.h>
typedef CGLContextObj QGLContext;
#define GLimp_GetCurrentContext() CGLGetCurrentContext()
#define GLimp_SetCurrentContext(ctx) CGLSetCurrentContext(ctx)
#else
typedef void *QGLContext;
#define GLimp_GetCurrentContext() (NULL)
#define GLimp_SetCurrentContext(ctx)
#endif
static QGLContext opengl_context;
static float displayAspect;
typedef enum
{
RSERR_OK,
RSERR_INVALID_FULLSCREEN,
RSERR_INVALID_MODE,
RSERR_UNKNOWN
} rserr_t;
static SDL_Surface *screen = NULL;
static const SDL_VideoInfo *videoInfo = NULL;
cvar_t *r_allowSoftwareGL; // Don't abort out if a hardware visual can't be obtained
cvar_t *r_allowResize; // make window resizable
cvar_t *r_centerWindow;
cvar_t *r_sdlDriver;
cvar_t *r_noborder;
// Whether the current hardware supports dynamic glows/flares.
extern bool g_bDynamicGlowSupported;
// Hack variable for deciding which kind of texture rectangle thing to do (for some
// reason it acts different on radeon! It's against the spec!).
bool g_bTextureRectangleHack = false;
/*
===============
GLimp_Shutdown
===============
*/
void GLimp_Shutdown( void )
{
IN_Shutdown();
SDL_QuitSubSystem( SDL_INIT_VIDEO );
screen = NULL;
}
/*
===============
GLimp_Minimize
Minimize the game so that user is back at the desktop
===============
*/
void GLimp_Minimize(void)
{
SDL_WM_IconifyWindow();
}
/*
===============
GLimp_LogComment
===============
*/
void GLimp_LogComment( char *comment )
{
}
/*
===============
GLimp_CompareModes
===============
*/
static int GLimp_CompareModes( const void *a, const void *b )
{
const float ASPECT_EPSILON = 0.001f;
SDL_Rect *modeA = *(SDL_Rect **)a;
SDL_Rect *modeB = *(SDL_Rect **)b;
float aspectA = (float)modeA->w / (float)modeA->h;
float aspectB = (float)modeB->w / (float)modeB->h;
int areaA = modeA->w * modeA->h;
int areaB = modeB->w * modeB->h;
float aspectDiffA = fabs( aspectA - displayAspect );
float aspectDiffB = fabs( aspectB - displayAspect );
float aspectDiffsDiff = aspectDiffA - aspectDiffB;
if( aspectDiffsDiff > ASPECT_EPSILON )
return 1;
else if( aspectDiffsDiff < -ASPECT_EPSILON )
return -1;
else
return areaA - areaB;
}
/*
===============
GLimp_DetectAvailableModes
===============
*/
static void GLimp_DetectAvailableModes(void)
{
char buf[ MAX_STRING_CHARS ] = { 0 };
SDL_Rect **modes;
int numModes;
int i;
modes = SDL_ListModes( videoInfo->vfmt, SDL_OPENGL | SDL_FULLSCREEN );
if( !modes )
{
Com_Printf( "Can't get list of available modes\n" );
return;
}
if( modes == (SDL_Rect **)-1 )
{
Com_Printf( "Display supports any resolution\n" );
return; // can set any resolution
}
for( numModes = 0; modes[ numModes ]; numModes++ );
if( numModes > 1 )
qsort( modes, numModes, sizeof( SDL_Rect* ), GLimp_CompareModes );
for( i = 0; i < numModes; i++ )
{
const char *newModeString = va( "%ux%u ", modes[ i ]->w, modes[ i ]->h );
if( strlen( newModeString ) < (int)sizeof( buf ) - strlen( buf ) )
Q_strcat( buf, sizeof( buf ), newModeString );
else
Com_Printf( "Skipping mode %ux%x, buffer too small\n", modes[i]->w, modes[i]->h );
}
if( *buf )
{
buf[ strlen( buf ) - 1 ] = 0;
Com_Printf( "Available modes: '%s'\n", buf );
Cvar_Set( "r_availableModes", buf );
}
}
/*
===============
GLimp_SetMode
===============
*/
static int GLimp_SetMode(int mode, qboolean fullscreen, qboolean noborder)
{
const char* glstring;
int sdlcolorbits;
int colorbits, depthbits, stencilbits;
int tcolorbits, tdepthbits, tstencilbits;
int samples;
int i = 0;
SDL_Surface *vidscreen = NULL;
Uint32 flags = SDL_OPENGL;
Com_Printf( "Initializing OpenGL display\n");
if ( r_allowResize->integer )
flags |= SDL_RESIZABLE;
if( videoInfo == NULL )
{
static SDL_VideoInfo sVideoInfo;
static SDL_PixelFormat sPixelFormat;
videoInfo = SDL_GetVideoInfo( );
// Take a copy of the videoInfo
memcpy( &sPixelFormat, videoInfo->vfmt, sizeof( SDL_PixelFormat ) );
sPixelFormat.palette = NULL; // Should already be the case
memcpy( &sVideoInfo, videoInfo, sizeof( SDL_VideoInfo ) );
sVideoInfo.vfmt = &sPixelFormat;
videoInfo = &sVideoInfo;
if( videoInfo->current_h > 0 )
{
// Guess the display aspect ratio through the desktop resolution
// by assuming (relatively safely) that it is set at or close to
// the display's native aspect ratio
displayAspect = (float)videoInfo->current_w / (float)videoInfo->current_h;
Com_Printf( "Estimated display aspect: %.3f\n", displayAspect );
}
else
{
Com_Printf( "Cannot estimate display aspect, assuming 1.333\n" );
}
}
Com_Printf ( "...setting mode %d:", mode );
if (mode == -2)
{
// use desktop video resolution
if( videoInfo->current_h > 0 )
{
glConfig.vidWidth = videoInfo->current_w;
glConfig.vidHeight = videoInfo->current_h;
}
else
{
glConfig.vidWidth = 640;
glConfig.vidHeight = 480;
Com_Printf( "Cannot determine display resolution, assuming 640x480\n" );
}
#if 0
glConfig.windowAspect = (float)glConfig.vidWidth / (float)glConfig.vidHeight;
#endif
}
else if ( !R_GetModeInfo( &glConfig.vidWidth, &glConfig.vidHeight, mode ) )
{
Com_Printf( " invalid mode\n" );
return RSERR_INVALID_MODE;
}
Com_Printf(" %d %d\n", glConfig.vidWidth, glConfig.vidHeight);
if (fullscreen)
{
flags |= SDL_FULLSCREEN;
glConfig.isFullscreen = qtrue;
}
else
{
if (noborder)
flags |= SDL_NOFRAME;
glConfig.isFullscreen = qfalse;
}
colorbits = r_colorbits->value;
if ((!colorbits) || (colorbits >= 32))
colorbits = 24;
if (!r_depthbits->value)
depthbits = 24;
else
depthbits = r_depthbits->value;
stencilbits = r_stencilbits->value;
#ifdef notyet
samples = r_ext_multisample->value;
#else
samples = 0;
#endif
for (i = 0; i < 16; i++)
{
// 0 - default
// 1 - minus colorbits
// 2 - minus depthbits
// 3 - minus stencil
if ((i % 4) == 0 && i)
{
// one pass, reduce
switch (i / 4)
{
case 2 :
if (colorbits == 24)
colorbits = 16;
break;
case 1 :
if (depthbits == 24)
depthbits = 16;
else if (depthbits == 16)
depthbits = 8;
case 3 :
if (stencilbits == 24)
stencilbits = 16;
else if (stencilbits == 16)
stencilbits = 8;
}
}
tcolorbits = colorbits;
tdepthbits = depthbits;
tstencilbits = stencilbits;
if ((i % 4) == 3)
{ // reduce colorbits
if (tcolorbits == 24)
tcolorbits = 16;
}
if ((i % 4) == 2)
{ // reduce depthbits
if (tdepthbits == 24)
tdepthbits = 16;
else if (tdepthbits == 16)
tdepthbits = 8;
}
if ((i % 4) == 1)
{ // reduce stencilbits
if (tstencilbits == 24)
tstencilbits = 16;
else if (tstencilbits == 16)
tstencilbits = 8;
else
tstencilbits = 0;
}
sdlcolorbits = 4;
if (tcolorbits == 24)
sdlcolorbits = 8;
#ifdef __sgi /* Fix for SGIs grabbing too many bits of color */
if (sdlcolorbits == 4)
sdlcolorbits = 0; /* Use minimum size for 16-bit color */
/* Need alpha or else SGIs choose 36+ bit RGB mode */
SDL_GL_SetAttribute( SDL_GL_ALPHA_SIZE, 1);
#endif
SDL_GL_SetAttribute( SDL_GL_RED_SIZE, sdlcolorbits );
SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, sdlcolorbits );
SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, sdlcolorbits );
SDL_GL_SetAttribute( SDL_GL_DEPTH_SIZE, tdepthbits );
SDL_GL_SetAttribute( SDL_GL_STENCIL_SIZE, tstencilbits );
SDL_GL_SetAttribute( SDL_GL_MULTISAMPLEBUFFERS, samples ? 1 : 0 );
SDL_GL_SetAttribute( SDL_GL_MULTISAMPLESAMPLES, samples );
#ifdef notyet
if(r_stereoEnabled->integer)
{
glConfig.stereoEnabled = qtrue;
SDL_GL_SetAttribute(SDL_GL_STEREO, 1);
}
else
{
glConfig.stereoEnabled = qfalse;
SDL_GL_SetAttribute(SDL_GL_STEREO, 0);
}
#endif
SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 );
#if 0 // See http://bugzilla.icculus.org/show_bug.cgi?id=3526
// If not allowing software GL, demand accelerated
if( !r_allowSoftwareGL->integer )
{
if( SDL_GL_SetAttribute( SDL_GL_ACCELERATED_VISUAL, 1 ) < 0 )
{
Com_Printf( "Unable to guarantee accelerated "
"visual with libSDL < 1.2.10\n" );
}
}
#endif
if( SDL_GL_SetAttribute( SDL_GL_SWAP_CONTROL, r_swapInterval->integer ) < 0 )
Com_Printf( "r_swapInterval requires libSDL >= 1.2.10\n" );
#ifdef USE_ICON
{
SDL_Surface *icon = SDL_CreateRGBSurfaceFrom(
(void *)CLIENT_WINDOW_ICON.pixel_data,
CLIENT_WINDOW_ICON.width,
CLIENT_WINDOW_ICON.height,
CLIENT_WINDOW_ICON.bytes_per_pixel * 8,
CLIENT_WINDOW_ICON.bytes_per_pixel * CLIENT_WINDOW_ICON.width,
#ifdef Q3_LITTLE_ENDIAN
0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
#else
0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF
#endif
);
SDL_WM_SetIcon( icon, NULL );
SDL_FreeSurface( icon );
}
#endif
SDL_WM_SetCaption(CLIENT_WINDOW_TITLE, CLIENT_WINDOW_MIN_TITLE);
SDL_ShowCursor(0);
if (!(vidscreen = SDL_SetVideoMode(glConfig.vidWidth, glConfig.vidHeight, colorbits, flags)))
{
Com_Printf( "SDL_SetVideoMode failed: %s\n", SDL_GetError( ) );
continue;
}
opengl_context = GLimp_GetCurrentContext();
Com_Printf( "Using %d/%d/%d Color bits, %d depth, %d stencil display.\n",
sdlcolorbits, sdlcolorbits, sdlcolorbits, tdepthbits, tstencilbits);
glConfig.colorBits = tcolorbits;
glConfig.depthBits = tdepthbits;
glConfig.stencilBits = tstencilbits;
break;
}
GLimp_DetectAvailableModes();
if (!vidscreen)
{
Com_Printf( "Couldn't get a visual\n" );
return RSERR_INVALID_MODE;
}
screen = vidscreen;
glstring = (char *) qglGetString (GL_RENDERER);
Com_Printf( "GL_RENDERER: %s\n", glstring );
return RSERR_OK;
}
/*
===============
GLimp_StartDriverAndSetMode
===============
*/
static qboolean GLimp_StartDriverAndSetMode(int mode, qboolean fullscreen, qboolean noborder)
{
rserr_t err;
if (!SDL_WasInit(SDL_INIT_VIDEO))
{
char driverName[ 64 ];
if (SDL_Init(SDL_INIT_VIDEO) == -1)
{
Com_Printf("SDL_Init( SDL_INIT_VIDEO ) FAILED (%s)\n",
SDL_GetError());
return qfalse;
}
SDL_VideoDriverName( driverName, sizeof( driverName ) - 1 );
Com_Printf( "SDL using driver \"%s\"\n", driverName );
Cvar_Set( "r_sdlDriver", driverName );
}
if (fullscreen && Cvar_VariableIntegerValue( "in_nograb" ) )
{
Com_Printf( "Fullscreen not allowed with in_nograb 1\n");
Cvar_Set( "r_fullscreen", "0" );
r_fullscreen->modified = qfalse;
fullscreen = qfalse;
}
err = (rserr_t) GLimp_SetMode(mode, fullscreen, noborder);
switch ( err )
{
case RSERR_INVALID_FULLSCREEN:
Com_Printf( "...WARNING: fullscreen unavailable in this mode\n" );
return qfalse;
case RSERR_INVALID_MODE:
Com_Printf( "...WARNING: could not set the given mode (%d)\n", mode );
return qfalse;
default:
break;
}
return qtrue;
}
//--------------------------------------------
static void GLW_InitTextureCompression( void )
{
qboolean newer_tc, old_tc;
// Check for available tc methods.
newer_tc = ( strstr( glConfig.extensions_string, "ARB_texture_compression" )
&& strstr( glConfig.extensions_string, "EXT_texture_compression_s3tc" )) ? qtrue : qfalse;
old_tc = ( strstr( glConfig.extensions_string, "GL_S3_s3tc" )) ? qtrue : qfalse;
if ( old_tc )
{
Com_Printf ("...GL_S3_s3tc available\n" );
}
if ( newer_tc )
{
Com_Printf ("...GL_EXT_texture_compression_s3tc available\n" );
}
if ( !r_ext_compressed_textures->value )
{
// Compressed textures are off
glConfig.textureCompression = TC_NONE;
Com_Printf ("...ignoring texture compression\n" );
}
else if ( !old_tc && !newer_tc )
{
// Requesting texture compression, but no method found
glConfig.textureCompression = TC_NONE;
Com_Printf ("...no supported texture compression method found\n" );
Com_Printf (".....ignoring texture compression\n" );
}
else
{
// some form of supported texture compression is avaiable, so see if the user has a preference
if ( r_ext_preferred_tc_method->integer == TC_NONE )
{
// No preference, so pick the best
if ( newer_tc )
{
Com_Printf ("...no tc preference specified\n" );
Com_Printf (".....using GL_EXT_texture_compression_s3tc\n" );
glConfig.textureCompression = TC_S3TC_DXT;
}
else
{
Com_Printf ("...no tc preference specified\n" );
Com_Printf (".....using GL_S3_s3tc\n" );
glConfig.textureCompression = TC_S3TC;
}
}
else
{
// User has specified a preference, now see if this request can be honored
if ( old_tc && newer_tc )
{
// both are avaiable, so we can use the desired tc method
if ( r_ext_preferred_tc_method->integer == TC_S3TC )
{
Com_Printf ("...using preferred tc method, GL_S3_s3tc\n" );
glConfig.textureCompression = TC_S3TC;
}
else
{
Com_Printf ("...using preferred tc method, GL_EXT_texture_compression_s3tc\n" );
glConfig.textureCompression = TC_S3TC_DXT;
}
}
else
{
// Both methods are not available, so this gets trickier
if ( r_ext_preferred_tc_method->integer == TC_S3TC )
{
// Preferring to user older compression
if ( old_tc )
{
Com_Printf ("...using GL_S3_s3tc\n" );
glConfig.textureCompression = TC_S3TC;
}
else
{
// Drat, preference can't be honored
Com_Printf ("...preferred tc method, GL_S3_s3tc not available\n" );
Com_Printf (".....falling back to GL_EXT_texture_compression_s3tc\n" );
glConfig.textureCompression = TC_S3TC_DXT;
}
}
else
{
// Preferring to user newer compression
if ( newer_tc )
{
Com_Printf ("...using GL_EXT_texture_compression_s3tc\n" );
glConfig.textureCompression = TC_S3TC_DXT;
}
else
{
// Drat, preference can't be honored
Com_Printf ("...preferred tc method, GL_EXT_texture_compression_s3tc not available\n" );
Com_Printf (".....falling back to GL_S3_s3tc\n" );
glConfig.textureCompression = TC_S3TC;
}
}
}
}
}
}
/*
** GLW_InitExtensions
*/
static void GLimp_InitExtensions( void )
{
if ( !r_allowExtensions->integer )
{
Com_Printf ("*** IGNORING OPENGL EXTENSIONS ***\n" );
g_bDynamicGlowSupported = false;
Cvar_Set( "r_DynamicGlow","0" );
return;
}
Com_Printf ("Initializing OpenGL extensions\n" );
// Select our tc scheme
GLW_InitTextureCompression();
// GL_EXT_texture_env_add
glConfig.textureEnvAddAvailable = qfalse;
if ( strstr( glConfig.extensions_string, "EXT_texture_env_add" ) )
{
if ( r_ext_texture_env_add->integer )
{
glConfig.textureEnvAddAvailable = qtrue;
Com_Printf ("...using GL_EXT_texture_env_add\n" );
}
else
{
glConfig.textureEnvAddAvailable = qfalse;
Com_Printf ("...ignoring GL_EXT_texture_env_add\n" );
}
}
else
{
Com_Printf ("...GL_EXT_texture_env_add not found\n" );
}
// GL_EXT_texture_filter_anisotropic
glConfig.maxTextureFilterAnisotropy = 0;
if ( strstr( glConfig.extensions_string, "EXT_texture_filter_anisotropic" ) )
{
#define GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT 0x84FF //can't include glext.h here ... sigh
qglGetFloatv( GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &glConfig.maxTextureFilterAnisotropy );
Com_Printf ("...GL_EXT_texture_filter_anisotropic available\n" );
if ( r_ext_texture_filter_anisotropic->integer>1 )
{
Com_Printf ("...using GL_EXT_texture_filter_anisotropic\n" );
}
else
{
Com_Printf ("...ignoring GL_EXT_texture_filter_anisotropic\n" );
}
Cvar_Set( "r_ext_texture_filter_anisotropic_avail", va("%f",glConfig.maxTextureFilterAnisotropy) );
if ( r_ext_texture_filter_anisotropic->value > glConfig.maxTextureFilterAnisotropy )
{
Cvar_Set( "r_ext_texture_filter_anisotropic", va("%f",glConfig.maxTextureFilterAnisotropy) );
}
}
else
{
Com_Printf ("...GL_EXT_texture_filter_anisotropic not found\n" );
Cvar_Set( "r_ext_texture_filter_anisotropic_avail", "0" );
}
// GL_EXT_clamp_to_edge
glConfig.clampToEdgeAvailable = qfalse;
if ( strstr( glConfig.extensions_string, "GL_EXT_texture_edge_clamp" ) )
{
glConfig.clampToEdgeAvailable = qtrue;
Com_Printf ("...Using GL_EXT_texture_edge_clamp\n" );
}
#if 0
// WGL_EXT_swap_control
qwglSwapIntervalEXT = ( BOOL (WINAPI *)(int)) SDL_GL_GetProcAddress( "wglSwapIntervalEXT" );
if ( qwglSwapIntervalEXT )
{
Com_Printf ("...using WGL_EXT_swap_control\n" );
r_swapInterval->modified = qtrue; // force a set next frame
}
else
{
Com_Printf ("...WGL_EXT_swap_control not found\n" );
}
#endif
// GL_ARB_multitexture
qglMultiTexCoord2fARB = NULL;
qglActiveTextureARB = NULL;
qglClientActiveTextureARB = NULL;
if ( strstr( glConfig.extensions_string, "GL_ARB_multitexture" ) )
{
if ( r_ext_multitexture->integer )
{
qglMultiTexCoord2fARB = ( PFNGLMULTITEXCOORD2FARBPROC ) SDL_GL_GetProcAddress( "glMultiTexCoord2fARB" );
qglActiveTextureARB = ( PFNGLACTIVETEXTUREARBPROC ) SDL_GL_GetProcAddress( "glActiveTextureARB" );
qglClientActiveTextureARB = ( PFNGLCLIENTACTIVETEXTUREARBPROC ) SDL_GL_GetProcAddress( "glClientActiveTextureARB" );
if ( qglActiveTextureARB )
{
qglGetIntegerv( GL_MAX_ACTIVE_TEXTURES_ARB, &glConfig.maxActiveTextures );
if ( glConfig.maxActiveTextures > 1 )
{
Com_Printf ("...using GL_ARB_multitexture\n" );
}
else
{
qglMultiTexCoord2fARB = NULL;
qglActiveTextureARB = NULL;
qglClientActiveTextureARB = NULL;
Com_Printf ("...not using GL_ARB_multitexture, < 2 texture units\n" );
}
}
}
else
{
Com_Printf ("...ignoring GL_ARB_multitexture\n" );
}
}
else
{
Com_Printf ("...GL_ARB_multitexture not found\n" );
}
// GL_EXT_compiled_vertex_array
qglLockArraysEXT = NULL;
qglUnlockArraysEXT = NULL;
if ( strstr( glConfig.extensions_string, "GL_EXT_compiled_vertex_array" ) )
{
if ( r_ext_compiled_vertex_array->integer )
{
Com_Printf ("...using GL_EXT_compiled_vertex_array\n" );
qglLockArraysEXT = ( void ( APIENTRY * )( int, int ) ) SDL_GL_GetProcAddress( "glLockArraysEXT" );
qglUnlockArraysEXT = ( void ( APIENTRY * )( void ) ) SDL_GL_GetProcAddress( "glUnlockArraysEXT" );
if (!qglLockArraysEXT || !qglUnlockArraysEXT) {
Com_Error (ERR_FATAL, "bad getprocaddress");
}
}
else
{
Com_Printf ("...ignoring GL_EXT_compiled_vertex_array\n" );
}
}
else
{
Com_Printf ("...GL_EXT_compiled_vertex_array not found\n" );
}
qglPointParameterfEXT = NULL;
qglPointParameterfvEXT = NULL;
//3d textures -rww
qglTexImage3DEXT = NULL;
qglTexSubImage3DEXT = NULL;
if ( strstr( glConfig.extensions_string, "GL_EXT_point_parameters" ) )
{
if ( r_ext_compiled_vertex_array->integer || 1)
{
Com_Printf ("...using GL_EXT_point_parameters\n" );
qglPointParameterfEXT = ( void ( APIENTRY * )( GLenum, GLfloat) ) SDL_GL_GetProcAddress( "glPointParameterfEXT" );
qglPointParameterfvEXT = ( void ( APIENTRY * )( GLenum, GLfloat *) ) SDL_GL_GetProcAddress( "glPointParameterfvEXT" );
//3d textures -rww
qglTexImage3DEXT = (void ( APIENTRY * ) (GLenum, GLint, GLenum, GLsizei, GLsizei, GLsizei, GLint, GLenum, GLenum, const GLvoid *) ) SDL_GL_GetProcAddress( "glTexImage3DEXT" );
qglTexSubImage3DEXT = (void ( APIENTRY * ) (GLenum, GLint, GLint, GLint, GLint, GLsizei, GLsizei, GLsizei, GLenum, GLenum, const GLvoid *) ) SDL_GL_GetProcAddress( "glTexSubImage3DEXT" );
if (!qglPointParameterfEXT || !qglPointParameterfvEXT)
{
Com_Error (ERR_FATAL, "bad getprocaddress");
}
}
else
{
Com_Printf ("...ignoring GL_EXT_point_parameters\n" );
}
}
else
{
Com_Printf ("...GL_EXT_point_parameters not found\n" );
}
bool bNVRegisterCombiners = false;
// Register Combiners.
if ( strstr( glConfig.extensions_string, "GL_NV_register_combiners" ) )
{
// NOTE: This extension requires multitexture support (over 2 units).
if ( glConfig.maxActiveTextures >= 2 )
{
bNVRegisterCombiners = true;
// Register Combiners function pointer address load. - AReis
// NOTE: VV guys will _definetly_ not be able to use regcoms. Pixel Shaders are just as good though :-)
// NOTE: Also, this is an nVidia specific extension (of course), so fragment shaders would serve the same purpose
// if we needed some kind of fragment/pixel manipulation support.
qglCombinerParameterfvNV = ( PFNGLCOMBINERPARAMETERFVNV ) SDL_GL_GetProcAddress( "glCombinerParameterfvNV" );
qglCombinerParameterivNV = ( PFNGLCOMBINERPARAMETERIVNV ) SDL_GL_GetProcAddress( "glCombinerParameterivNV" );
qglCombinerParameterfNV = ( PFNGLCOMBINERPARAMETERFNV ) SDL_GL_GetProcAddress( "glCombinerParameterfNV" );
qglCombinerParameteriNV = ( PFNGLCOMBINERPARAMETERINV ) SDL_GL_GetProcAddress( "glCombinerParameteriNV" );
qglCombinerInputNV = ( PFNGLCOMBINERINPUTNV ) SDL_GL_GetProcAddress( "glCombinerInputNV" );
qglCombinerOutputNV = ( PFNGLCOMBINEROUTPUTNV ) SDL_GL_GetProcAddress( "glCombinerOutputNV" );
qglFinalCombinerInputNV = ( PFNGLFINALCOMBINERINPUTNV ) SDL_GL_GetProcAddress( "glFinalCombinerInputNV" );
qglGetCombinerInputParameterfvNV = ( PFNGLGETCOMBINERINPUTPARAMETERFVNV ) SDL_GL_GetProcAddress( "glGetCombinerInputParameterfvNV" );
qglGetCombinerInputParameterivNV = ( PFNGLGETCOMBINERINPUTPARAMETERIVNV ) SDL_GL_GetProcAddress( "glGetCombinerInputParameterivNV" );
qglGetCombinerOutputParameterfvNV = ( PFNGLGETCOMBINEROUTPUTPARAMETERFVNV ) SDL_GL_GetProcAddress( "glGetCombinerOutputParameterfvNV" );
qglGetCombinerOutputParameterivNV = ( PFNGLGETCOMBINEROUTPUTPARAMETERIVNV ) SDL_GL_GetProcAddress( "glGetCombinerOutputParameterivNV" );
qglGetFinalCombinerInputParameterfvNV = ( PFNGLGETFINALCOMBINERINPUTPARAMETERFVNV ) SDL_GL_GetProcAddress( "glGetFinalCombinerInputParameterfvNV" );
qglGetFinalCombinerInputParameterivNV = ( PFNGLGETFINALCOMBINERINPUTPARAMETERIVNV ) SDL_GL_GetProcAddress( "glGetFinalCombinerInputParameterivNV" );
// Validate the functions we need.
if ( !qglCombinerParameterfvNV || !qglCombinerParameterivNV || !qglCombinerParameterfNV || !qglCombinerParameteriNV || !qglCombinerInputNV ||
!qglCombinerOutputNV || !qglFinalCombinerInputNV || !qglGetCombinerInputParameterfvNV || !qglGetCombinerInputParameterivNV ||
!qglGetCombinerOutputParameterfvNV || !qglGetCombinerOutputParameterivNV || !qglGetFinalCombinerInputParameterfvNV || !qglGetFinalCombinerInputParameterivNV )
{
bNVRegisterCombiners = false;
qglCombinerParameterfvNV = NULL;
qglCombinerParameteriNV = NULL;
Com_Printf ("...GL_NV_register_combiners failed\n" );
}
}
else
{
bNVRegisterCombiners = false;
Com_Printf ("...ignoring GL_NV_register_combiners\n" );
}
}
else
{
bNVRegisterCombiners = false;
Com_Printf ("...GL_NV_register_combiners not found\n" );
}
// NOTE: Vertex and Fragment Programs are very dependant on each other - this is actually a
// good thing! So, just check to see which we support (one or the other) and load the shared
// function pointers. ARB rocks!
// Vertex Programs.
bool bARBVertexProgram = false;
if ( strstr( glConfig.extensions_string, "GL_ARB_vertex_program" ) )
{
bARBVertexProgram = true;
}
else
{
bARBVertexProgram = false;
Com_Printf ("...GL_ARB_vertex_program not found\n" );
}
// Fragment Programs.
bool bARBFragmentProgram = false;
if ( strstr( glConfig.extensions_string, "GL_ARB_fragment_program" ) )
{
bARBFragmentProgram = true;
}
else
{
bARBFragmentProgram = false;
Com_Printf ("...GL_ARB_fragment_program not found\n" );
}
// If we support one or the other, load the shared function pointers.
if ( bARBVertexProgram || bARBFragmentProgram )
{
qglProgramStringARB = (PFNGLPROGRAMSTRINGARBPROC) SDL_GL_GetProcAddress("glProgramStringARB");
qglBindProgramARB = (PFNGLBINDPROGRAMARBPROC) SDL_GL_GetProcAddress("glBindProgramARB");
qglDeleteProgramsARB = (PFNGLDELETEPROGRAMSARBPROC) SDL_GL_GetProcAddress("glDeleteProgramsARB");
qglGenProgramsARB = (PFNGLGENPROGRAMSARBPROC) SDL_GL_GetProcAddress("glGenProgramsARB");
qglProgramEnvParameter4dARB = (PFNGLPROGRAMENVPARAMETER4DARBPROC) SDL_GL_GetProcAddress("glProgramEnvParameter4dARB");
qglProgramEnvParameter4dvARB = (PFNGLPROGRAMENVPARAMETER4DVARBPROC) SDL_GL_GetProcAddress("glProgramEnvParameter4dvARB");
qglProgramEnvParameter4fARB = (PFNGLPROGRAMENVPARAMETER4FARBPROC) SDL_GL_GetProcAddress("glProgramEnvParameter4fARB");
qglProgramEnvParameter4fvARB = (PFNGLPROGRAMENVPARAMETER4FVARBPROC) SDL_GL_GetProcAddress("glProgramEnvParameter4fvARB");
qglProgramLocalParameter4dARB = (PFNGLPROGRAMLOCALPARAMETER4DARBPROC) SDL_GL_GetProcAddress("glProgramLocalParameter4dARB");
qglProgramLocalParameter4dvARB = (PFNGLPROGRAMLOCALPARAMETER4DVARBPROC) SDL_GL_GetProcAddress("glProgramLocalParameter4dvARB");
qglProgramLocalParameter4fARB = (PFNGLPROGRAMLOCALPARAMETER4FARBPROC) SDL_GL_GetProcAddress("glProgramLocalParameter4fARB");
qglProgramLocalParameter4fvARB = (PFNGLPROGRAMLOCALPARAMETER4FVARBPROC) SDL_GL_GetProcAddress("glProgramLocalParameter4fvARB");
qglGetProgramEnvParameterdvARB = (PFNGLGETPROGRAMENVPARAMETERDVARBPROC) SDL_GL_GetProcAddress("glGetProgramEnvParameterdvARB");
qglGetProgramEnvParameterfvARB = (PFNGLGETPROGRAMENVPARAMETERFVARBPROC) SDL_GL_GetProcAddress("glGetProgramEnvParameterfvARB");
qglGetProgramLocalParameterdvARB = (PFNGLGETPROGRAMLOCALPARAMETERDVARBPROC) SDL_GL_GetProcAddress("glGetProgramLocalParameterdvARB");
qglGetProgramLocalParameterfvARB = (PFNGLGETPROGRAMLOCALPARAMETERFVARBPROC) SDL_GL_GetProcAddress("glGetProgramLocalParameterfvARB");
qglGetProgramivARB = (PFNGLGETPROGRAMIVARBPROC) SDL_GL_GetProcAddress("glGetProgramivARB");
qglGetProgramStringARB = (PFNGLGETPROGRAMSTRINGARBPROC) SDL_GL_GetProcAddress("glGetProgramStringARB");
qglIsProgramARB = (PFNGLISPROGRAMARBPROC) SDL_GL_GetProcAddress("glIsProgramARB");
// Validate the functions we need.
if ( !qglProgramStringARB || !qglBindProgramARB || !qglDeleteProgramsARB || !qglGenProgramsARB ||
!qglProgramEnvParameter4dARB || !qglProgramEnvParameter4dvARB || !qglProgramEnvParameter4fARB ||
!qglProgramEnvParameter4fvARB || !qglProgramLocalParameter4dARB || !qglProgramLocalParameter4dvARB ||
!qglProgramLocalParameter4fARB || !qglProgramLocalParameter4fvARB || !qglGetProgramEnvParameterdvARB ||
!qglGetProgramEnvParameterfvARB || !qglGetProgramLocalParameterdvARB || !qglGetProgramLocalParameterfvARB ||
!qglGetProgramivARB || !qglGetProgramStringARB || !qglIsProgramARB )
{
bARBVertexProgram = false;
bARBFragmentProgram = false;
qglGenProgramsARB = NULL; //clear ptrs that get checked
qglProgramEnvParameter4fARB = NULL;
Com_Printf ("...ignoring GL_ARB_vertex_program\n" );
Com_Printf ("...ignoring GL_ARB_fragment_program\n" );
}
}
// Figure out which texture rectangle extension to use.
bool bTexRectSupported = false;
if ( Q_strnicmp( glConfig.vendor_string, "ATI Technologies",16 )==0
&& Q_strnicmp( glConfig.version_string, "1.3.3",5 )==0
&& glConfig.version_string[5] < '9' ) //1.3.34 and 1.3.37 and 1.3.38 are broken for sure, 1.3.39 is not
{
g_bTextureRectangleHack = true;
}
if ( strstr( glConfig.extensions_string, "GL_NV_texture_rectangle" )
|| strstr( glConfig.extensions_string, "GL_EXT_texture_rectangle" ) )
{
bTexRectSupported = true;
}
#if 0
// OK, so not so good to put this here, but no one else uses it!!! -AReis
typedef const char * (WINAPI * PFNWGLGETEXTENSIONSSTRINGARBPROC) (HDC hdc);
PFNWGLGETEXTENSIONSSTRINGARBPROC qwglGetExtensionsStringARB;
qwglGetExtensionsStringARB = (PFNWGLGETEXTENSIONSSTRINGARBPROC) SDL_GL_GetProcAddress("wglGetExtensionsStringARB");
const char *wglExtensions = NULL;
#endif
bool bHasPixelFormat = false;
bool bHasRenderTexture = false;
#if 0
// Get the WGL extensions string.
if ( qwglGetExtensionsStringARB )
{
wglExtensions = qwglGetExtensionsStringARB( glw_state.hDC );
}
// This externsion is used to get the wgl extension string.
if ( wglExtensions )
{
// Pixel Format.
if ( strstr( wglExtensions, "WGL_ARB_pixel_format" ) )
{
qwglGetPixelFormatAttribivARB = (PFNWGLGETPIXELFORMATATTRIBIVARBPROC) SDL_GL_GetProcAddress("wglGetPixelFormatAttribivARB");
qwglGetPixelFormatAttribfvARB = (PFNWGLGETPIXELFORMATATTRIBFVARBPROC) SDL_GL_GetProcAddress("wglGetPixelFormatAttribfvARB");
qwglChoosePixelFormatARB = (PFNWGLCHOOSEPIXELFORMATARBPROC) SDL_GL_GetProcAddress("wglChoosePixelFormatARB");
// Validate the functions we need.
if ( !qwglGetPixelFormatAttribivARB || !qwglGetPixelFormatAttribfvARB || !qwglChoosePixelFormatARB )
{
Com_Printf ("...ignoring WGL_ARB_pixel_format\n" );
}
else
{
bHasPixelFormat = true;
}
}
else
{
Com_Printf ("...ignoring WGL_ARB_pixel_format\n" );
}
// Offscreen pixel-buffer.
// NOTE: VV guys can use the equivelant SetRenderTarget() with the correct texture surfaces.
bool bWGLARBPbuffer = false;
if ( strstr( wglExtensions, "WGL_ARB_pbuffer" ) && bHasPixelFormat )
{
bWGLARBPbuffer = true;
qwglCreatePbufferARB = (PFNWGLCREATEPBUFFERARBPROC) SDL_GL_GetProcAddress("wglCreatePbufferARB");
qwglGetPbufferDCARB = (PFNWGLGETPBUFFERDCARBPROC) SDL_GL_GetProcAddress("wglGetPbufferDCARB");
qwglReleasePbufferDCARB = (PFNWGLRELEASEPBUFFERDCARBPROC) SDL_GL_GetProcAddress("wglReleasePbufferDCARB");
qwglDestroyPbufferARB = (PFNWGLDESTROYPBUFFERARBPROC) SDL_GL_GetProcAddress("wglDestroyPbufferARB");
qwglQueryPbufferARB = (PFNWGLQUERYPBUFFERARBPROC) SDL_GL_GetProcAddress("wglQueryPbufferARB");
// Validate the functions we need.
if ( !qwglCreatePbufferARB || !qwglGetPbufferDCARB || !qwglReleasePbufferDCARB || !qwglDestroyPbufferARB || !qwglQueryPbufferARB )
{
bWGLARBPbuffer = false;
Com_Printf ("...WGL_ARB_pbuffer failed\n" );
}
}
else
{
bWGLARBPbuffer = false;
Com_Printf ("...WGL_ARB_pbuffer not found\n" );
}
// Render-Texture (requires pbuffer ext (and it's dependancies of course).
if ( strstr( wglExtensions, "WGL_ARB_render_texture" ) && bWGLARBPbuffer )
{
qwglBindTexImageARB = (PFNWGLBINDTEXIMAGEARBPROC) SDL_GL_GetProcAddress("wglBindTexImageARB");
qwglReleaseTexImageARB = (PFNWGLRELEASETEXIMAGEARBPROC) SDL_GL_GetProcAddress("wglReleaseTexImageARB");
qwglSetPbufferAttribARB = (PFNWGLSETPBUFFERATTRIBARBPROC) SDL_GL_GetProcAddress("wglSetPbufferAttribARB");
// Validate the functions we need.
if ( !qwglCreatePbufferARB || !qwglGetPbufferDCARB || !qwglReleasePbufferDCARB || !qwglDestroyPbufferARB || !qwglQueryPbufferARB )
{
Com_Printf ("...ignoring WGL_ARB_render_texture\n" );
}
else
{
bHasRenderTexture = true;
}
}
else
{
Com_Printf ("...ignoring WGL_ARB_render_texture\n" );
}
}
#endif
// Find out how many general combiners they have.
#define GL_MAX_GENERAL_COMBINERS_NV 0x854D
GLint iNumGeneralCombiners = 0;
qglGetIntegerv( GL_MAX_GENERAL_COMBINERS_NV, &iNumGeneralCombiners );
// Only allow dynamic glows/flares if they have the hardware
if ( bTexRectSupported && bARBVertexProgram && bHasRenderTexture && qglActiveTextureARB && glConfig.maxActiveTextures >= 4 &&
( ( bNVRegisterCombiners && iNumGeneralCombiners >= 2 ) || bARBFragmentProgram ) )
{
g_bDynamicGlowSupported = true;
// this would overwrite any achived setting gwg
// Cvar_Set( "r_DynamicGlow", "1" );
}
else
{
g_bDynamicGlowSupported = false;
Cvar_Set( "r_DynamicGlow","0" );
}
}
#define R_MODE_FALLBACK 3 // 640 * 480
/*
===============
GLimp_Init
This routine is responsible for initializing the OS specific portions
of OpenGL
===============
*/
void GLimp_Init( void )
{
r_allowSoftwareGL = Cvar_Get( "r_allowSoftwareGL", "0", CVAR_LATCH );
r_sdlDriver = Cvar_Get( "r_sdlDriver", "", CVAR_ROM );
r_allowResize = Cvar_Get( "r_allowResize", "0", CVAR_ARCHIVE );
r_centerWindow = Cvar_Get( "r_centerWindow", "0", CVAR_ARCHIVE );
r_noborder = Cvar_Get( "r_noborder", "0", CVAR_ARCHIVE );
qboolean fullscreen, noborder;
if( Cvar_VariableIntegerValue( "com_abnormalExit" ) )
{
Cvar_Set( "r_mode", va( "%d", R_MODE_FALLBACK ) );
Cvar_Set( "r_fullscreen", "0" );
Cvar_Set( "r_centerWindow", "0" );
Cvar_Set( "com_abnormalExit", "0" );
}
#ifdef notyet
Sys_SetEnv( "SDL_VIDEO_CENTERED", r_centerWindow->integer ? "1" : "" );
#endif
Sys_GLimpInit( );
fullscreen = (r_fullscreen->integer) ? qtrue : qfalse;
noborder = (r_noborder->integer) ? qtrue : qfalse;
// Create the window and set up the context
if(GLimp_StartDriverAndSetMode(r_mode->integer, fullscreen, noborder))
goto success;
// Try again, this time in a platform specific "safe mode"
Sys_GLimpSafeInit( );
if(GLimp_StartDriverAndSetMode(r_mode->integer, fullscreen, qfalse))
goto success;
// Finally, try the default screen resolution
if( r_mode->integer != R_MODE_FALLBACK )
{
Com_Printf( "Setting r_mode %d failed, falling back on r_mode %d\n",
r_mode->integer, R_MODE_FALLBACK );
if(GLimp_StartDriverAndSetMode(R_MODE_FALLBACK, qfalse, qfalse))
goto success;
}
// Nothing worked, give up
Com_Error( ERR_FATAL, "GLimp_Init() - could not load OpenGL subsystem" );
success:
#if 0
// This values force the UI to disable driver selection
glConfig.driverType = GLDRV_ICD;
glConfig.hardwareType = GLHW_GENERIC;
#endif
glConfig.deviceSupportsGamma = (SDL_SetGamma( 1.0f, 1.0f, 1.0f ) >= 0) ? qtrue : qfalse;
// Mysteriously, if you use an NVidia graphics card and multiple monitors,
// SDL_SetGamma will incorrectly return false... the first time; ask
// again and you get the correct answer. This is a suspected driver bug, see
// http://bugzilla.icculus.org/show_bug.cgi?id=4316
glConfig.deviceSupportsGamma = (SDL_SetGamma( 1.0f, 1.0f, 1.0f ) >= 0) ? qtrue : qfalse;
if ( -1 == r_ignorehwgamma->integer)
glConfig.deviceSupportsGamma = qtrue;
if ( 1 == r_ignorehwgamma->integer)
glConfig.deviceSupportsGamma = qfalse;
// get our config strings
glConfig.vendor_string = (const char *) qglGetString (GL_VENDOR);
glConfig.renderer_string = (const char *) qglGetString (GL_RENDERER);
glConfig.version_string = (const char *) qglGetString (GL_VERSION);
glConfig.extensions_string = (const char *) qglGetString (GL_EXTENSIONS);
// OpenGL driver constants
qglGetIntegerv( GL_MAX_TEXTURE_SIZE, &glConfig.maxTextureSize );
// stubbed or broken drivers may have reported 0...
if ( glConfig.maxTextureSize <= 0 )
{
glConfig.maxTextureSize = 0;
}
// initialize extensions
GLimp_InitExtensions( );
Cvar_Get( "r_availableModes", "", CVAR_ROM );
// This depends on SDL_INIT_VIDEO, hence having it here
IN_Init( );
}
/*
===============
GLimp_EndFrame
Responsible for doing a swapbuffers
===============
*/
void GLimp_EndFrame( void )
{
// don't flip if drawing to front buffer
//if ( Q_stricmp( r_drawBuffer->string, "GL_FRONT" ) != 0 )
{
SDL_GL_SwapBuffers();
}
if( r_fullscreen->modified )
{
qboolean fullscreen;
qboolean needToToggle = qtrue;
qboolean sdlToggled = qfalse;
SDL_Surface *s = SDL_GetVideoSurface( );
if( s )
{
// Find out the current state
fullscreen = (!!( s->flags & SDL_FULLSCREEN )) ? qtrue : qfalse;
if( r_fullscreen->integer && Cvar_VariableIntegerValue( "in_nograb" ) )
{
Com_Printf( "Fullscreen not allowed with in_nograb 1\n");
Cvar_Set( "r_fullscreen", "0" );
r_fullscreen->modified = qfalse;
}
// Is the state we want different from the current state?
needToToggle = (!!r_fullscreen->integer != fullscreen) ? qtrue : qfalse;
if( needToToggle )
sdlToggled = SDL_WM_ToggleFullScreen( s ) ? qtrue : qfalse;
}
if( needToToggle )
{
// SDL_WM_ToggleFullScreen didn't work, so do it the slow way
if( !sdlToggled )
Cbuf_AddText( "vid_restart\n" );
IN_Restart( );
}
r_fullscreen->modified = qfalse;
}
}
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