static void GLimp_InitExtensions( void )
{
if ( !r_allowExtensions->integer )
{
Com_Printf ("*** IGNORING OPENGL EXTENSIONS ***\n" );
g_bDynamicGlowSupported = false;
ri->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" );
}
ri->Cvar_SetValue( "r_ext_texture_filter_anisotropic_avail", glConfig.maxTextureFilterAnisotropy );
if ( r_ext_texture_filter_anisotropic->value > glConfig.maxTextureFilterAnisotropy )
{
ri->Cvar_SetValue( "r_ext_texture_filter_anisotropic_avail", glConfig.maxTextureFilterAnisotropy );
}
}
else
{
Com_Printf ("...GL_EXT_texture_filter_anisotropic not found\n" );
ri->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" );
}
// 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 )
{
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 = (PFNGLCOMBINERPARAMETERFVNVPROC)SDL_GL_GetProcAddress( "glCombinerParameterfvNV" );
qglCombinerParameterivNV = (PFNGLCOMBINERPARAMETERIVNVPROC)SDL_GL_GetProcAddress( "glCombinerParameterivNV" );
qglCombinerParameterfNV = (PFNGLCOMBINERPARAMETERFNVPROC)SDL_GL_GetProcAddress( "glCombinerParameterfNV" );
qglCombinerParameteriNV = (PFNGLCOMBINERPARAMETERINVPROC)SDL_GL_GetProcAddress( "glCombinerParameteriNV" );
qglCombinerInputNV = (PFNGLCOMBINERINPUTNVPROC)SDL_GL_GetProcAddress( "glCombinerInputNV" );
qglCombinerOutputNV = (PFNGLCOMBINEROUTPUTNVPROC)SDL_GL_GetProcAddress( "glCombinerOutputNV" );
qglFinalCombinerInputNV = (PFNGLFINALCOMBINERINPUTNVPROC)SDL_GL_GetProcAddress( "glFinalCombinerInputNV" );
qglGetCombinerInputParameterfvNV = (PFNGLGETCOMBINERINPUTPARAMETERFVNVPROC)SDL_GL_GetProcAddress( "glGetCombinerInputParameterfvNV" );
qglGetCombinerInputParameterivNV = (PFNGLGETCOMBINERINPUTPARAMETERIVNVPROC)SDL_GL_GetProcAddress( "glGetCombinerInputParameterivNV" );
qglGetCombinerOutputParameterfvNV = (PFNGLGETCOMBINEROUTPUTPARAMETERFVNVPROC)SDL_GL_GetProcAddress( "glGetCombinerOutputParameterfvNV" );
qglGetCombinerOutputParameterivNV = (PFNGLGETCOMBINEROUTPUTPARAMETERIVNVPROC)SDL_GL_GetProcAddress( "glGetCombinerOutputParameterivNV" );
qglGetFinalCombinerInputParameterfvNV = (PFNGLGETFINALCOMBINERINPUTPARAMETERFVNVPROC)SDL_GL_GetProcAddress( "glGetFinalCombinerInputParameterfvNV" );
qglGetFinalCombinerInputParameterivNV = (PFNGLGETFINALCOMBINERINPUTPARAMETERIVNVPROC)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_stricmpn( glConfig.vendor_string, "ATI Technologies",16 )==0
&& Q_stricmpn( 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;
}
// Find out how many general combiners they have.
#define GL_MAX_GENERAL_COMBINERS_NV 0x854D
GLint iNumGeneralCombiners = 0;
if(bNVRegisterCombiners)
qglGetIntegerv( GL_MAX_GENERAL_COMBINERS_NV, &iNumGeneralCombiners );
// Only allow dynamic glows/flares if they have the hardware
if ( bTexRectSupported && bARBVertexProgram && 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;
ri->Cvar_Set( "r_DynamicGlow","0" );
}
}
static void SetFinalProjection( void ) {
float xmin, xmax, ymin, ymax;
float width, height, depth;
float zNear, zFar, zProj, stereoSep;
float dx, dy;
vec2_t pixelJitter, eyeJitter;
//
// set up projection matrix
//
zNear = r_znear->value;
zFar = backEnd.viewParms.zFar;
zProj = r_zproj->value;
stereoSep = r_stereoSeparation->value / 100.0f;
ymax = zNear * tan( backEnd.viewParms.fovY * M_PI / 360.0f );
ymin = -ymax;
xmax = zNear * tan( backEnd.viewParms.fovX * M_PI / 360.0f );
xmin = -xmax;
width = xmax - xmin;
height = ymax - ymin;
depth = zFar - zNear;
pixelJitter[0] = pixelJitter[1] = 0;
eyeJitter[0] = eyeJitter[1] = 0;
/* Jitter the view */
if ( stereoSep <= 0.0f) {
R_MME_JitterView( pixelJitter, eyeJitter );
} else if ( stereoSep > 0.0f) {
R_MME_JitterViewStereo( pixelJitter, eyeJitter );
}
dx = ( pixelJitter[0]*width ) / backEnd.viewParms.viewportWidth;
dy = ( pixelJitter[1]*height ) / backEnd.viewParms.viewportHeight;
dx += eyeJitter[0];
dy += eyeJitter[1];
xmin += dx; xmax += dx;
ymin += dy; ymax += dy;
qglMatrixMode(GL_PROJECTION);
qglPushMatrix();
qglLoadIdentity();
qglFrustum( xmin, xmax, ymin, ymax, zNear, zFar );
qglGetFloatv(GL_PROJECTION_MATRIX, backEnd.viewParms.projectionMatrix );
qglPopMatrix();
backEnd.viewParms.projectionMatrix[0] = 2 * zNear / width;
backEnd.viewParms.projectionMatrix[4] = 0;
backEnd.viewParms.projectionMatrix[8] = ( xmax + xmin + 2 * stereoSep ) / width; // normally 0
backEnd.viewParms.projectionMatrix[12] = 2 * zProj * stereoSep / width;
backEnd.viewParms.projectionMatrix[1] = 0;
backEnd.viewParms.projectionMatrix[5] = 2 * zNear / height;
backEnd.viewParms.projectionMatrix[9] = ( ymax + ymin ) / height; // normally 0
backEnd.viewParms.projectionMatrix[13] = 0;
backEnd.viewParms.projectionMatrix[2] = 0;
backEnd.viewParms.projectionMatrix[6] = 0;
backEnd.viewParms.projectionMatrix[10] = -( zFar + zNear ) / depth;
backEnd.viewParms.projectionMatrix[14] = -2 * zFar * zNear / depth;
backEnd.viewParms.projectionMatrix[3] = 0;
backEnd.viewParms.projectionMatrix[7] = 0;
backEnd.viewParms.projectionMatrix[11] = -1;
backEnd.viewParms.projectionMatrix[15] = 0;
}
/*
** 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" );
}
}
/*
** GLW_InitExtensions
*/
static void GLW_InitExtensions( void )
{
// Select our tc scheme
GLW_InitTextureCompression();
// GL_EXT_texture_env_add
glConfig.textureEnvAddAvailable = qfalse;
if ( strstr( glConfig.extensions_string, "EXT_texture_env_add" ) )
{
glConfig.textureEnvAddAvailable = qtrue;
}
// GL_EXT_texture_filter_anisotropic
glConfig.maxTextureFilterAnisotropy = 0;
if ( strstr( glConfig.extensions_string, "EXT_texture_filter_anisotropic" ) )
{
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;
}
// GL_ARB_multitexture
if ( strstr( glConfig.extensions_string, "GL_ARB_multitexture" ) )
{
if ( qglActiveTextureARB )
{
qglGetIntegerv( GL_MAX_ACTIVE_TEXTURES_ARB, &glConfig.maxActiveTextures );
if ( glConfig.maxActiveTextures < 2 )
{
qglMultiTexCoord2fARB = NULL;
qglActiveTextureARB = NULL;
qglClientActiveTextureARB = NULL;
}
}
}
}
