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illusion-arena-engine/code/sdl/sdl_glimp.c
leilei- 513c538fba A bunch of things 
- s_interrupt - allows sounds to be interrupted by the same sound or entity channel
- new dynamic light calculation for vertex lighting, affecting vertex color (no projected dlight textures)
- rgbGen material for allowing calculation for diffuse, specular, emmissive vertex colors by hex values
- rgbMod shader command allowing new vertex color effects
- removed deprecated R_ParseStageSimple, it never worked as intended
- r_slowness gone. Use llvmpipe, PCem, or a slow computer instead.
- Spring cleaning of old deprecated/broken post-process GLSL experiments
- r_anime broke in 2015
- r_tvMode - well, shaderglass exists now
- r_motionblur - Bad technique, too much memory
- t_pslettize - slow, relies on shader's lookup of a vector table
- r_film - bad on well-lit maps
- r_retroAA - this broke early too. also looked bad. would rather implement FSAA 4x
- cl_consoleScale : makes the console more 640x480 sized on any higher res. Also affects notify messages, so you can read chat easier
- cl_consoleColor also affects the line at the bottom. Also new default colors
- If consoleShader can't load (which will happen with some mods), it will fallback to a flat-colored console.
- Generic'd the red/blue team names.  We will not be having missionpack clans.
- SDL2: Clicking the red X now does something: you can leave!!! If it sucks.... hit da bricks!! real winners quit
- s_xmp_startPattern - makes the tracker song play a different pattern (for use with sub-songs)
- fixed xmp playback as xmp explicitly requires a length of the module now. Fixes issue #96
- suppress the warning about non-22khz music, as mods are playing at the mixer's rate always, and this warning regards a much earlier (1999) unstable sound mixer.
- deprecating r_modelshader because the shader got stale, old, buggy, and amd hates it now
- r_shadeMethod will be something else (and not shader-based)
- r_lightmapColorNorm : Make normalization of bright luxels an option, default is 1 (q3 behavior).
- r_lightmapColorNorm 0 = no normalization, straight clamp, like Nightdive's vision of Quake2
- r_lightmapColorNorm 2 = experiment: normalize, but add some luminance on while maintaining the hue by normalizing again. This tries to restore more range on fully saturated colors
- dropped SHADER_MAX_VERTEXES back to 1000 because raising it causes various unexpected issues, so dialing it down for now
- raise MAX_IMAGE_ANIMATIONS to 16 because I've got a cool water shader using it and 8 is too choppy
- Crash fix for older (<=2001) mods by trimming the string shared with ui module, so no overflow for them
- jettisoning old proposed mme particle system that was never ever hooked up properly.
- other small warning cleanup
- r_shadeMethod : 0/1 = q3 behavior, 2 = ue1-ish behavior, 3 = mix of 1 and 2, -1 = one uniform color, 150-666 = a lod range to change between the 3
- r_monolightmaps : refactor - goes to the light data instead of the calculations and images
- removed r_greyscale because this is a data-modifying novelty that would complicate support for loading compressed texture formats. This is better off as a post-process shader
- environment mapping refactor, rewrite and cleanup
- removed a lot of deprecated rgbGens
- removed r_texdump (it never worked)
- remove a few leftover broken postprocess things
- Internal GLSL brightness shader, so gamma control can work without the glsl/brightness_fp.glsl file when r_ext_vertex_shader is 1 and r_alternateBrightness is 2.
- r_skyTess - an attempt to make the complexity of skydomes an option so it could use less polygons. Has no effect on skyboxes
2025-05-20 06:30:51 -04:00

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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 "../renderercommon/tr_common.h"
#include "../sys/sys_local.h"
#include "sdl_icon.h"
/* 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
#if SDL_MAJOR_VERSION != 2
static QGLContext opengl_context;
#endif
//int vresWidth;
//int vresHeight;
typedef enum
{
RSERR_OK,
RSERR_INVALID_FULLSCREEN,
RSERR_INVALID_MODE,
RSERR_UNKNOWN
} rserr_t;
#if SDL_MAJOR_VERSION == 2
SDL_Window *SDL_window = NULL;
SDL_GLContext SDL_glContext = NULL;
#else
static SDL_Surface *screen = NULL;
static const SDL_VideoInfo *videoInfo = NULL;
#endif
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_conMode; // leilei - console mode - force native resolutions of various consoles
cvar_t *r_centerWindow;
cvar_t *r_sdlDriver;
void (APIENTRYP qglActiveTextureARB) (GLenum texture);
void (APIENTRYP qglClientActiveTextureARB) (GLenum texture);
void (APIENTRYP qglMultiTexCoord2fARB) (GLenum target, GLfloat s, GLfloat t);
void (APIENTRYP qglLockArraysEXT) (GLint first, GLsizei count);
void (APIENTRYP qglUnlockArraysEXT) (void);
/*
===============
GLimp_Shutdown
===============
*/
void GLimp_Shutdown( void )
{
ri.IN_Shutdown();
SDL_QuitSubSystem( SDL_INIT_VIDEO );
#if SDL_MAJOR_VERSION != 2
screen = NULL;
#endif
}
/*
===============
GLimp_Minimize
Minimize the game so that user is back at the desktop
===============
*/
void GLimp_Minimize(void)
{
#if SDL_MAJOR_VERSION == 2
SDL_MinimizeWindow( SDL_window );
#else
SDL_WM_IconifyWindow();
#endif
}
/*
===============
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;
#if SDL_MAJOR_VERSION == 2
SDL_Rect *modeA = (SDL_Rect *)a;
SDL_Rect *modeB = (SDL_Rect *)b;
#else
SDL_Rect *modeA = *(SDL_Rect **)a;
SDL_Rect *modeB = *(SDL_Rect **)b;
#endif
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 };
#if SDL_MAJOR_VERSION == 2
SDL_Rect modes[ 128 ];
#else
SDL_Rect **modes;
#endif
int numModes = 0;
int i;
#if SDL_MAJOR_VERSION == 2
int display = SDL_GetWindowDisplayIndex( SDL_window );
SDL_DisplayMode windowMode;
if( SDL_GetWindowDisplayMode( SDL_window, &windowMode ) < 0 )
{
ri.Printf( PRINT_WARNING, "Couldn't get window display mode, no resolutions detected\n" );
return;
}
for( i = 0; i < SDL_GetNumDisplayModes( display ); i++ )
{
SDL_DisplayMode mode;
if( SDL_GetDisplayMode( display, i, &mode ) < 0 )
continue;
if( !mode.w || !mode.h )
{
ri.Printf( PRINT_ALL, "Display supports any resolution\n" );
return;
}
if( windowMode.format != mode.format )
continue;
modes[ numModes ].w = mode.w;
modes[ numModes ].h = mode.h;
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
ri.Printf( PRINT_WARNING, "Skipping mode %ux%x, buffer too small\n", modes[i].w, modes[i].h );
}
#else
modes = SDL_ListModes( videoInfo->vfmt, SDL_OPENGL | SDL_FULLSCREEN );
if( !modes )
{
ri.Printf( PRINT_WARNING, "Can't get list of available modes\n" );
return;
}
if( modes == (SDL_Rect **)-1 )
{
ri.Printf( PRINT_ALL, "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
ri.Printf( PRINT_WARNING, "Skipping mode %ux%x, buffer too small\n", modes[i]->w, modes[i]->h );
}
#endif
if( *buf )
{
buf[ strlen( buf ) - 1 ] = 0;
ri.Printf( PRINT_ALL, "Available modes: '%s'\n", buf );
ri.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 *icon = NULL;
#if SDL_MAJOR_VERSION == 2
Uint32 flags = SDL_WINDOW_SHOWN | SDL_WINDOW_OPENGL;
int display = 0;
SDL_DisplayMode desktopMode;
int x = SDL_WINDOWPOS_UNDEFINED, y = SDL_WINDOWPOS_UNDEFINED;
#else
SDL_Surface *vidscreen = NULL;
Uint32 flags = SDL_OPENGL;
#endif
ri.Printf( PRINT_ALL, "Initializing OpenGL display\n");
if ( r_allowResize->integer )
#if SDL_MAJOR_VERSION == 2
flags |= SDL_WINDOW_RESIZABLE;
#else
flags |= SDL_RESIZABLE;
#endif
#if SDL_MAJOR_VERSION == 2
// If a window exists, note its display index
if( SDL_window != NULL )
display = SDL_GetWindowDisplayIndex( SDL_window );
if( SDL_GetDesktopDisplayMode( display, &desktopMode ) == 0 )
{
displayAspect = (float)desktopMode.w / (float)desktopMode.h;
ri.Printf( PRINT_ALL, "Display aspect: %.3f\n", displayAspect );
}
else
{
Com_Memset( &desktopMode, 0, sizeof( SDL_DisplayMode ) );
ri.Printf( PRINT_ALL,
"Cannot determine display aspect, assuming 1.333\n" );
}
#else
if( videoInfo == NULL )
{
static SDL_VideoInfo sVideoInfo;
static SDL_PixelFormat sPixelFormat;
videoInfo = SDL_GetVideoInfo( );
// Take a copy of the videoInfo
Com_Memcpy( &sPixelFormat, videoInfo->vfmt, sizeof( SDL_PixelFormat ) );
sPixelFormat.palette = NULL; // Should already be the case
Com_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;
ri.Printf( PRINT_ALL, "Estimated display aspect: %.3f\n", displayAspect );
}
else
{
ri.Printf( PRINT_ALL,
"Cannot estimate display aspect, assuming 1.333\n" );
}
}
#endif
ri.Printf (PRINT_ALL, "...setting mode %d:", mode );
if (mode == -2)
{
// use desktop video resolution
#if SDL_MAJOR_VERSION == 2
if ( desktopMode.h > 0 )
{
glConfig.vidWidth = desktopMode.w;
glConfig.vidHeight = desktopMode.h;
}
#else
if ( videoInfo->current_h > 0 )
{
glConfig.vidWidth = videoInfo->current_w;
glConfig.vidHeight = videoInfo->current_h;
}
#endif
else
{
glConfig.vidWidth = 640;
glConfig.vidHeight = 480;
ri.Printf( PRINT_ALL,
"Cannot determine display resolution, assuming 640x480\n" );
}
glConfig.windowAspect = (float)glConfig.vidWidth / (float)glConfig.vidHeight;
}
else if ( !R_GetModeInfo( &glConfig.vidWidth, &glConfig.vidHeight, &glConfig.windowAspect, mode ) )
{
ri.Printf( PRINT_ALL, " invalid mode\n" );
return RSERR_INVALID_MODE;
}
ri.Printf( PRINT_ALL, " %d %d\n", glConfig.vidWidth, glConfig.vidHeight);
#if SDL_MAJOR_VERSION == 2
// Destroy existing state if it exists
if( SDL_glContext != NULL )
{
SDL_GL_DeleteContext( SDL_glContext );
SDL_glContext = NULL;
}
if( SDL_window != NULL )
{
SDL_GetWindowPosition( SDL_window, &x, &y );
ri.Printf( PRINT_DEVELOPER, "Existing window at %dx%d before being destroyed\n", x, y );
SDL_DestroyWindow( SDL_window );
SDL_window = NULL;
}
#endif
if (fullscreen)
{
#if SDL_MAJOR_VERSION == 2
flags |= SDL_WINDOW_FULLSCREEN;
#else
flags |= SDL_FULLSCREEN;
#endif
glConfig.isFullscreen = qtrue;
}
else
{
if (noborder)
#if SDL_MAJOR_VERSION == 2
flags |= SDL_WINDOW_BORDERLESS;
#else
flags |= SDL_NOFRAME;
#endif
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;
samples = r_ext_multisample->value;
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 );
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);
}
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 )
{
ri.Printf( PRINT_ALL, "Unable to guarantee accelerated "
"visual with libSDL < 1.2.10\n" );
}
}
#endif
#if SDL_MAJOR_VERSION != 2
if( SDL_GL_SetAttribute( SDL_GL_SWAP_CONTROL, r_swapInterval->integer ) < 0 )
ri.Printf( PRINT_ALL, "r_swapInterval requires libSDL >= 1.2.10\n" );
#endif
#ifdef USE_ICON
{
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
);
#if SDL_MAJOR_VERSION != 2
SDL_WM_SetIcon( icon, NULL );
#endif
}
#endif
#if SDL_MAJOR_VERSION == 2
if( ( SDL_window = SDL_CreateWindow( CLIENT_WINDOW_TITLE, x, y,
glConfig.vidWidth, glConfig.vidHeight, flags ) ) == 0 )
{
ri.Printf( PRINT_DEVELOPER, "SDL_CreateWindow failed: %s\n", SDL_GetError( ) );
continue;
}
if( fullscreen )
{
SDL_DisplayMode mode;
switch( tcolorbits )
{
case 16: mode.format = SDL_PIXELFORMAT_RGB565; break;
case 24: mode.format = SDL_PIXELFORMAT_RGB24; break;
default: ri.Printf( PRINT_DEVELOPER, "tcolorbits is %d, can't fullscreen\n", tcolorbits ); continue;
}
mode.w = glConfig.vidWidth;
mode.h = glConfig.vidHeight;
mode.refresh_rate = glConfig.displayFrequency = ri.Cvar_VariableIntegerValue( "r_displayRefresh" );
mode.driverdata = NULL;
if( SDL_SetWindowDisplayMode( SDL_window, &mode ) < 0 )
{
ri.Printf( PRINT_DEVELOPER, "SDL_SetWindowDisplayMode failed: %s\n", SDL_GetError( ) );
continue;
}
}
SDL_SetWindowIcon( SDL_window, icon );
if( ( SDL_glContext = SDL_GL_CreateContext( SDL_window ) ) == NULL )
{
ri.Printf( PRINT_DEVELOPER, "SDL_GL_CreateContext failed: %s\n", SDL_GetError( ) );
continue;
}
SDL_GL_SetSwapInterval( r_swapInterval->integer );
#else
SDL_WM_SetCaption(CLIENT_WINDOW_TITLE, CLIENT_WINDOW_MIN_TITLE);
SDL_ShowCursor(0);
if (!(vidscreen = SDL_SetVideoMode(glConfig.vidWidth, glConfig.vidHeight, colorbits, flags)))
{
ri.Printf( PRINT_DEVELOPER, "SDL_SetVideoMode failed: %s\n", SDL_GetError( ) );
continue;
}
opengl_context = GLimp_GetCurrentContext();
#endif
ri.Printf( PRINT_ALL, "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;
}
SDL_FreeSurface( icon );
GLimp_DetectAvailableModes();
#if SDL_MAJOR_VERSION != 2
if (!vidscreen)
{
ri.Printf( PRINT_ALL, "Couldn't get a visual\n" );
return RSERR_INVALID_MODE;
}
#endif
vresWidth = glConfig.vidWidth;
vresHeight = glConfig.vidHeight;
vresWidth = 640;
vresHeight = 480;
#if SDL_MAJOR_VERSION != 2
screen = vidscreen;
#endif
// then change the gl port..
glstring = (char *) qglGetString (GL_RENDERER);
ri.Printf( PRINT_ALL, "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))
{
#if SDL_MAJOR_VERSION == 2
const char *driverName;
#else
char driverName[ 64 ];
#endif
if (SDL_Init(SDL_INIT_VIDEO) == -1)
{
ri.Printf( PRINT_ALL, "SDL_Init( SDL_INIT_VIDEO ) FAILED (%s)\n",
SDL_GetError());
return qfalse;
}
#if SDL_MAJOR_VERSION == 2
driverName = SDL_GetCurrentVideoDriver();
#else
SDL_VideoDriverName( driverName, sizeof( driverName ) - 1 );
#endif
ri.Printf( PRINT_ALL, "SDL using driver \"%s\"\n", driverName );
ri.Cvar_Set( "r_sdlDriver", driverName );
}
if (fullscreen && ri.Cvar_VariableIntegerValue( "in_nograb" ) )
{
ri.Printf( PRINT_ALL, "Fullscreen not allowed with in_nograb 1\n");
ri.Cvar_Set( "r_fullscreen", "0" );
r_fullscreen->modified = qfalse;
fullscreen = qfalse;
}
err = GLimp_SetMode(mode, fullscreen, noborder);
switch ( err )
{
case RSERR_INVALID_FULLSCREEN:
ri.Printf( PRINT_ALL, "...WARNING: fullscreen unavailable in this mode\n" );
return qfalse;
case RSERR_INVALID_MODE:
ri.Printf( PRINT_ALL, "...WARNING: could not set the given mode (%d)\n", mode );
return qfalse;
default:
break;
}
return qtrue;
}
static qboolean GLimp_HaveExtension(const char *ext)
{
const char *ptr = Q_stristr( glConfig.extensions_string, ext );
if (ptr == NULL)
return qfalse;
ptr += strlen(ext);
return ((*ptr == ' ') || (*ptr == '\0')); // verify it's complete string.
}
/*
===============
GLimp_InitExtensions
===============
*/
static void GLimp_InitExtensions( void )
{
if ( !r_allowExtensions->integer )
{
ri.Printf( PRINT_ALL, "* IGNORING OPENGL EXTENSIONS *\n" );
return;
}
ri.Printf( PRINT_ALL, "Initializing OpenGL extensions\n" );
glConfig.textureCompression = TC_NONE;
// GL_EXT_texture_compression_s3tc
if ( GLimp_HaveExtension( "GL_ARB_texture_compression" ) &&
GLimp_HaveExtension( "GL_EXT_texture_compression_s3tc" ) )
{
if ( r_ext_compressed_textures->value )
{
glConfig.textureCompression = TC_S3TC_ARB;
ri.Printf( PRINT_ALL, "...using GL_EXT_texture_compression_s3tc\n" );
}
else
{
ri.Printf( PRINT_ALL, "...ignoring GL_EXT_texture_compression_s3tc\n" );
}
}
else
{
ri.Printf( PRINT_ALL, "...GL_EXT_texture_compression_s3tc not found\n" );
}
// GL_S3_s3tc ... legacy extension before GL_EXT_texture_compression_s3tc.
if (glConfig.textureCompression == TC_NONE)
{
if ( GLimp_HaveExtension( "GL_S3_s3tc" ) )
{
if ( r_ext_compressed_textures->value )
{
glConfig.textureCompression = TC_S3TC;
ri.Printf( PRINT_ALL, "...using GL_S3_s3tc\n" );
}
else
{
ri.Printf( PRINT_ALL, "...ignoring GL_S3_s3tc\n" );
}
}
else
{
ri.Printf( PRINT_ALL, "...GL_S3_s3tc not found\n" );
}
}
// GL_EXT_texture_env_add
glConfig.textureEnvAddAvailable = qfalse;
if ( GLimp_HaveExtension( "EXT_texture_env_add" ) )
{
if ( r_ext_texture_env_add->integer )
{
glConfig.textureEnvAddAvailable = qtrue;
ri.Printf( PRINT_ALL, "...using GL_EXT_texture_env_add\n" );
}
else
{
glConfig.textureEnvAddAvailable = qfalse;
ri.Printf( PRINT_ALL, "...ignoring GL_EXT_texture_env_add\n" );
}
}
else
{
ri.Printf( PRINT_ALL, "...GL_EXT_texture_env_add not found\n" );
}
// GL_ARB_multitexture
qglMultiTexCoord2fARB = NULL;
qglActiveTextureARB = NULL;
qglClientActiveTextureARB = NULL;
if ( GLimp_HaveExtension( "GL_ARB_multitexture" ) )
{
if ( r_ext_multitexture->value )
{
qglMultiTexCoord2fARB = SDL_GL_GetProcAddress( "glMultiTexCoord2fARB" );
qglActiveTextureARB = SDL_GL_GetProcAddress( "glActiveTextureARB" );
qglClientActiveTextureARB = SDL_GL_GetProcAddress( "glClientActiveTextureARB" );
if ( qglActiveTextureARB )
{
GLint glint = 0;
qglGetIntegerv( GL_MAX_TEXTURE_UNITS_ARB, &glint );
glConfig.numTextureUnits = (int) glint;
if ( glConfig.numTextureUnits > 1 )
{
ri.Printf( PRINT_ALL, "...using GL_ARB_multitexture\n" );
}
else
{
qglMultiTexCoord2fARB = NULL;
qglActiveTextureARB = NULL;
qglClientActiveTextureARB = NULL;
ri.Printf( PRINT_ALL, "...not using GL_ARB_multitexture, < 2 texture units\n" );
}
}
}
else
{
ri.Printf( PRINT_ALL, "...ignoring GL_ARB_multitexture\n" );
}
}
else
{
ri.Printf( PRINT_ALL, "...GL_ARB_multitexture not found\n" );
}
// GL_EXT_compiled_vertex_array
if ( GLimp_HaveExtension( "GL_EXT_compiled_vertex_array" ) )
{
if ( r_ext_compiled_vertex_array->value )
{
ri.Printf( PRINT_ALL, "...using GL_EXT_compiled_vertex_array\n" );
qglLockArraysEXT = ( void ( APIENTRY * )( GLint, GLint ) ) SDL_GL_GetProcAddress( "glLockArraysEXT" );
qglUnlockArraysEXT = ( void ( APIENTRY * )( void ) ) SDL_GL_GetProcAddress( "glUnlockArraysEXT" );
if (!qglLockArraysEXT || !qglUnlockArraysEXT)
{
ri.Error (ERR_FATAL, "bad getprocaddress");
}
}
else
{
ri.Printf( PRINT_ALL, "...ignoring GL_EXT_compiled_vertex_array\n" );
}
}
else
{
ri.Printf( PRINT_ALL, "...GL_EXT_compiled_vertex_array not found\n" );
}
textureFilterAnisotropic = qfalse;
if ( GLimp_HaveExtension( "GL_EXT_texture_filter_anisotropic" ) )
{
if ( r_ext_texture_filter_anisotropic->integer ) {
qglGetIntegerv( GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, (GLint *)&maxAnisotropy );
if ( maxAnisotropy <= 0 ) {
ri.Printf( PRINT_ALL, "...GL_EXT_texture_filter_anisotropic not properly supported!\n" );
maxAnisotropy = 0;
}
else
{
ri.Printf( PRINT_ALL, "...using GL_EXT_texture_filter_anisotropic (max: %i)\n", maxAnisotropy );
textureFilterAnisotropic = qtrue;
}
}
else
{
ri.Printf( PRINT_ALL, "...ignoring GL_EXT_texture_filter_anisotropic\n" );
}
}
else
{
ri.Printf( PRINT_ALL, "...GL_EXT_texture_filter_anisotropic not found\n" );
}
}
#define R_MODE_FALLBACK 3 // 640 * 480
#if defined( _WIN32 ) && defined( USE_CONSOLE_WINDOW )
void Sys_DestroyConsole(void);
void Sys_ShowConsole( int visLevel, qboolean quitOnClose );
#endif
/*
===============
GLimp_Init
This routine is responsible for initializing the OS specific portions
of OpenGL
===============
*/
void GLimp_Init( void )
{
r_allowSoftwareGL = ri.Cvar_Get( "r_allowSoftwareGL", "0", CVAR_LATCH );
r_sdlDriver = ri.Cvar_Get( "r_sdlDriver", "", CVAR_ROM );
r_allowResize = ri.Cvar_Get( "r_allowResize", "0", CVAR_ARCHIVE | CVAR_LATCH );
r_centerWindow = ri.Cvar_Get( "r_centerWindow", "0", CVAR_ARCHIVE | CVAR_LATCH );
if( ri.Cvar_VariableIntegerValue( "com_abnormalExit" ) )
{
ri.Cvar_Set( "r_mode", va( "%d", R_MODE_FALLBACK ) );
ri.Cvar_Set( "r_fullscreen", "0" );
ri.Cvar_Set( "r_centerWindow", "0" );
ri.Cvar_Set( "com_abnormalExit", "0" );
}
ri.Sys_SetEnv( "SDL_VIDEO_CENTERED", r_centerWindow->integer ? "1" : "" );
ri.Sys_GLimpInit( );
// Create the window and set up the context
if(GLimp_StartDriverAndSetMode(r_mode->integer, r_fullscreen->integer, r_noborder->integer))
goto success;
// Try again, this time in a platform specific "safe mode"
ri.Sys_GLimpSafeInit( );
if(GLimp_StartDriverAndSetMode(r_mode->integer, r_fullscreen->integer, qfalse))
goto success;
// Finally, try the default screen resolution
if( r_mode->integer != R_MODE_FALLBACK )
{
ri.Printf( PRINT_ALL, "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
ri.Error( ERR_FATAL, "GLimp_Init() - could not load OpenGL subsystem" );
success:
// This values force the UI to disable driver selection
glConfig.driverType = GLDRV_ICD;
glConfig.hardwareType = GLHW_GENERIC;
#if SDL_MAJOR_VERSION == 2
// Only using SDL_SetWindowBrightness to determine if hardware gamma is supported
glConfig.deviceSupportsGamma = !r_ignorehwgamma->integer &&
SDL_SetWindowBrightness( SDL_window, 1.0f ) >= 0;
#else
glConfig.deviceSupportsGamma = SDL_SetGamma( 1.0f, 1.0f, 1.0f ) >= 0;
// 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;
#endif
#ifdef _WIN32
// leilei - 3dfx gamma
if ( qwglSetDeviceGammaRamp3DFX )
{
glConfig.deviceSupportsGamma = 1; // force it
}
#endif
if ( -1 == r_ignorehwgamma->integer)
glConfig.deviceSupportsGamma = 1;
if ( 1 == r_ignorehwgamma->integer)
glConfig.deviceSupportsGamma = 0;
// get our config strings
Q_strncpyz( glConfig.vendor_string, (char *) qglGetString (GL_VENDOR), sizeof( glConfig.vendor_string ) );
Q_strncpyz( glConfig.renderer_string, (char *) qglGetString (GL_RENDERER), sizeof( glConfig.renderer_string ) );
if (*glConfig.renderer_string && glConfig.renderer_string[strlen(glConfig.renderer_string) - 1] == '\n')
glConfig.renderer_string[strlen(glConfig.renderer_string) - 1] = 0;
Q_strncpyz( glConfig.version_string, (char *) qglGetString (GL_VERSION), sizeof( glConfig.version_string ) );
Q_strncpyz( glConfig.extensions_string, (char *) qglGetString (GL_EXTENSIONS), sizeof( glConfig.extensions_string ) );
// initialize extensions
GLimp_InitExtensions( );
ri.Cvar_Get( "r_availableModes", "", CVAR_ROM );
// This depends on SDL_INIT_VIDEO, hence having it here
#if SDL_MAJOR_VERSION == 2
ri.IN_Init( SDL_window );
#else
ri.IN_Init( );
#endif
#if defined( _WIN32 ) && defined( USE_CONSOLE_WINDOW )
// leilei - hide our console window
Sys_ShowConsole(0, 0 );
#endif
}
/*
===============
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 )
{
#if SDL_MAJOR_VERSION == 2
SDL_GL_SwapWindow( SDL_window );
#else
SDL_GL_SwapBuffers();
#endif
}
if( r_fullscreen->modified )
{
qboolean fullscreen;
qboolean needToToggle = qtrue;
qboolean sdlToggled = qfalse;
#if SDL_MAJOR_VERSION == 2
fullscreen = !!( SDL_GetWindowFlags( SDL_window ) & SDL_WINDOW_FULLSCREEN );
#else
SDL_Surface *s = SDL_GetVideoSurface( );
if( s )
{
// Find out the current state
fullscreen = !!( s->flags & SDL_FULLSCREEN );
#endif
if( r_fullscreen->integer && ri.Cvar_VariableIntegerValue( "in_nograb" ) )
{
ri.Printf( PRINT_ALL, "Fullscreen not allowed with in_nograb 1\n");
ri.Cvar_Set( "r_fullscreen", "0" );
r_fullscreen->modified = qfalse;
}
// Is the state we want different from the current state?
needToToggle = !!r_fullscreen->integer != fullscreen;
if( needToToggle )
#if SDL_MAJOR_VERSION == 2
sdlToggled = SDL_SetWindowFullscreen( SDL_window, r_fullscreen->integer ) >= 0;
#else
sdlToggled = SDL_WM_ToggleFullScreen( s );
}
#endif
if( needToToggle )
{
// SDL_WM_ToggleFullScreen didn't work, so do it the slow way
if( !sdlToggled )
ri.Cmd_ExecuteText(EXEC_APPEND, "vid_restart\n");
ri.IN_Restart( );
}
r_fullscreen->modified = qfalse;
}
}
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