* Remove use of GL_ARB_multitexture since this has been part of the

  core API for many years now


git-svn-id: svn://svn.icculus.org/quake3/trunk@1176 edf5b092-35ff-0310-97b2-ce42778d08ea

9 files changed, 42 insertions, 84 deletions

diff --git a/code/renderer/qgl.h b/code/renderer/qgl.h
index a2ed123..7ba2658 100644
--- a/code/renderer/qgl.h
+++ b/code/renderer/qgl.h
@@ -28,10 +28,6 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
 #include "SDL_opengl.h"
 
-extern PFNGLMULTITEXCOORD2FARBPROC qglMultiTexCoord2fARB;
-extern PFNGLACTIVETEXTUREARBPROC qglActiveTextureARB;
-extern PFNGLCLIENTACTIVETEXTUREARBPROC qglClientActiveTextureARB;
-
 extern PFNGLLOCKARRAYSEXTPROC qglLockArraysEXT;
 extern PFNGLUNLOCKARRAYSEXTPROC qglUnlockArraysEXT;
 
@@ -371,5 +367,23 @@ extern PFNGLUNLOCKARRAYSEXTPROC qglUnlockArraysEXT;
 #define qglVertex4sv glVertex4sv
 #define qglVertexPointer glVertexPointer
 #define qglViewport glViewport
+#define qglMultiTexCoord1s glMultiTexCoord1s
+#define qglMultiTexCoord1i glMultiTexCoord1i
+#define qglMultiTexCoord1f glMultiTexCoord1f
+#define qglMultiTexCoord1d glMultiTexCoord1d
+#define qglMultiTexCoord2s glMultiTexCoord2s
+#define qglMultiTexCoord2i glMultiTexCoord2i
+#define qglMultiTexCoord2f glMultiTexCoord2f
+#define qglMultiTexCoord2d glMultiTexCoord2d
+#define qglMultiTexCoord3s glMultiTexCoord3s
+#define qglMultiTexCoord3i glMultiTexCoord3i
+#define qglMultiTexCoord3f glMultiTexCoord3f
+#define qglMultiTexCoord3d glMultiTexCoord3d
+#define qglMultiTexCoord4s glMultiTexCoord4s
+#define qglMultiTexCoord4i glMultiTexCoord4i
+#define qglMultiTexCoord4f glMultiTexCoord4f
+#define qglMultiTexCoord4d glMultiTexCoord4d
+#define qglActiveTexture glActiveTexture
+#define qglClientActiveTexture glClientActiveTexture
 
 #endif
diff --git a/code/renderer/tr_backend.c b/code/renderer/tr_backend.c
index 2061dd8..cc1a55a 100644
--- a/code/renderer/tr_backend.c
+++ b/code/renderer/tr_backend.c
@@ -71,17 +71,17 @@ void GL_SelectTexture( int unit )
 
 	if ( unit == 0 )
 	{
-		qglActiveTextureARB( GL_TEXTURE0_ARB );
-		GLimp_LogComment( "glActiveTextureARB( GL_TEXTURE0_ARB )\n" );
-		qglClientActiveTextureARB( GL_TEXTURE0_ARB );
-		GLimp_LogComment( "glClientActiveTextureARB( GL_TEXTURE0_ARB )\n" );
+		qglActiveTexture( GL_TEXTURE0 );
+		GLimp_LogComment( "glActiveTexture( GL_TEXTURE0 )\n" );
+		qglClientActiveTexture( GL_TEXTURE0 );
+		GLimp_LogComment( "glClientActiveTexture( GL_TEXTURE0 )\n" );
 	}
 	else if ( unit == 1 )
 	{
-		qglActiveTextureARB( GL_TEXTURE1_ARB );
-		GLimp_LogComment( "glActiveTextureARB( GL_TEXTURE1_ARB )\n" );
-		qglClientActiveTextureARB( GL_TEXTURE1_ARB );
-		GLimp_LogComment( "glClientActiveTextureARB( GL_TEXTURE1_ARB )\n" );
+		qglActiveTexture( GL_TEXTURE1 );
+		GLimp_LogComment( "glActiveTexture( GL_TEXTURE1 )\n" );
+		qglClientActiveTexture( GL_TEXTURE1 );
+		GLimp_LogComment( "glClientActiveTexture( GL_TEXTURE1 )\n" );
 	} else {
 		ri.Error( ERR_DROP, "GL_SelectTexture: unit = %i", unit );
 	}
diff --git a/code/renderer/tr_image.c b/code/renderer/tr_image.c
index 37b91c2..1ec33da 100644
--- a/code/renderer/tr_image.c
+++ b/code/renderer/tr_image.c
@@ -765,13 +765,13 @@ image_t *R_CreateImage( const char *name, const byte *pic, int width, int height
 	image->wrapClampMode = glWrapClampMode;
 
 	// lightmaps are always allocated on TMU 1
-	if ( qglActiveTextureARB && isLightmap ) {
+	if ( glConfig.numTextureUnits > 1 && isLightmap ) {
 		image->TMU = 1;
 	} else {
 		image->TMU = 0;
 	}
 
-	if ( qglActiveTextureARB ) {
+	if ( glConfig.numTextureUnits > 1 ) {
 		GL_SelectTexture( image->TMU );
 	}
 
@@ -4849,7 +4849,7 @@ void R_DeleteTextures( void ) {
 	tr.numImages = 0;
 
 	Com_Memset( glState.currenttextures, 0, sizeof( glState.currenttextures ) );
-	if ( qglActiveTextureARB ) {
+	if ( glConfig.numTextureUnits > 1 ) {
 		GL_SelectTexture( 1 );
 		qglBindTexture( GL_TEXTURE_2D, 0 );
 		GL_SelectTexture( 0 );
diff --git a/code/renderer/tr_init.c b/code/renderer/tr_init.c
index 76e0a9d..6caa64f 100644
--- a/code/renderer/tr_init.c
+++ b/code/renderer/tr_init.c
@@ -80,8 +80,6 @@ cvar_t	*r_nocurves;
 cvar_t	*r_allowExtensions;
 
 cvar_t	*r_ext_compressed_textures;
-cvar_t	*r_ext_gamma_control;
-cvar_t	*r_ext_multitexture;
 cvar_t	*r_ext_compiled_vertex_array;
 cvar_t	*r_ext_texture_env_add;
 cvar_t	*r_ext_texture_filter_anisotropic;
@@ -761,7 +759,7 @@ void GL_SetDefaultState( void )
 
 	// initialize downstream texture unit if we're running
 	// in a multitexture environment
-	if ( qglActiveTextureARB ) {
+	if ( glConfig.numTextureUnits > 1 ) {
 		GL_SelectTexture( 1 );
 		GL_TextureMode( r_textureMode->string );
 		GL_TexEnv( GL_MODULATE );
@@ -801,7 +799,6 @@ GfxInfo_f
 */
 void GfxInfo_f( void ) 
 {
-	cvar_t *sys_cpustring = ri.Cvar_Get( "sys_cpustring", "", 0 );
 	const char *enablestrings[] =
 	{
 		"disabled",
@@ -818,7 +815,7 @@ void GfxInfo_f( void )
 	ri.Printf( PRINT_ALL, "GL_VERSION: %s\n", glConfig.version_string );
 	ri.Printf( PRINT_ALL, "GL_EXTENSIONS: %s\n", glConfig.extensions_string );
 	ri.Printf( PRINT_ALL, "GL_MAX_TEXTURE_SIZE: %d\n", glConfig.maxTextureSize );
-	ri.Printf( PRINT_ALL, "GL_MAX_ACTIVE_TEXTURES_ARB: %d\n", glConfig.maxActiveTextures );
+	ri.Printf( PRINT_ALL, "GL_MAX_TEXTURE_UNITS: %d\n", glConfig.numTextureUnits );
 	ri.Printf( PRINT_ALL, "\nPIXELFORMAT: color(%d-bits) Z(%d-bit) stencil(%d-bits)\n", glConfig.colorBits, glConfig.depthBits, glConfig.stencilBits );
 	ri.Printf( PRINT_ALL, "MODE: %d, %d x %d %s hz:", r_mode->integer, glConfig.vidWidth, glConfig.vidHeight, fsstrings[r_fullscreen->integer == 1] );
 	if ( glConfig.displayFrequency )
@@ -837,7 +834,6 @@ void GfxInfo_f( void )
 	{
 		ri.Printf( PRINT_ALL, "GAMMA: software w/ %d overbright bits\n", tr.overbrightBits );
 	}
-	ri.Printf( PRINT_ALL, "CPU: %s\n", sys_cpustring->string );
 
 	// rendering primitives
 	{
@@ -867,7 +863,7 @@ void GfxInfo_f( void )
 	ri.Printf( PRINT_ALL, "texturemode: %s\n", r_textureMode->string );
 	ri.Printf( PRINT_ALL, "picmip: %d\n", r_picmip->integer );
 	ri.Printf( PRINT_ALL, "texture bits: %d\n", r_texturebits->integer );
-	ri.Printf( PRINT_ALL, "multitexture: %s\n", enablestrings[qglActiveTextureARB != 0] );
+	ri.Printf( PRINT_ALL, "multitexture: %s\n", enablestrings[glConfig.numTextureUnits > 1] );
 	ri.Printf( PRINT_ALL, "compiled vertex arrays: %s\n", enablestrings[qglLockArraysEXT != 0 ] );
 	ri.Printf( PRINT_ALL, "texenv add: %s\n", enablestrings[glConfig.textureEnvAddAvailable != 0] );
 	ri.Printf( PRINT_ALL, "compressed textures: %s\n", enablestrings[glConfig.textureCompression!=TC_NONE] );
@@ -903,14 +899,8 @@ void R_Register( void )
 	//
 	r_allowExtensions = ri.Cvar_Get( "r_allowExtensions", "1", CVAR_ARCHIVE | CVAR_LATCH );
 	r_ext_compressed_textures = ri.Cvar_Get( "r_ext_compressed_textures", "0", CVAR_ARCHIVE | CVAR_LATCH );
-	r_ext_gamma_control = ri.Cvar_Get( "r_ext_gamma_control", "1", CVAR_ARCHIVE | CVAR_LATCH );
-	r_ext_multitexture = ri.Cvar_Get( "r_ext_multitexture", "1", CVAR_ARCHIVE | CVAR_LATCH );
 	r_ext_compiled_vertex_array = ri.Cvar_Get( "r_ext_compiled_vertex_array", "1", CVAR_ARCHIVE | CVAR_LATCH);
-#ifdef __linux__ // broken on linux
-	r_ext_texture_env_add = ri.Cvar_Get( "r_ext_texture_env_add", "0", CVAR_ARCHIVE | CVAR_LATCH);
-#else
 	r_ext_texture_env_add = ri.Cvar_Get( "r_ext_texture_env_add", "1", CVAR_ARCHIVE | CVAR_LATCH);
-#endif
 
 	r_ext_texture_filter_anisotropic = ri.Cvar_Get( "r_ext_texture_filter_anisotropic",
 			"0", CVAR_ARCHIVE | CVAR_LATCH );
@@ -924,11 +914,7 @@ void R_Register( void )
 	r_texturebits = ri.Cvar_Get( "r_texturebits", "0", CVAR_ARCHIVE | CVAR_LATCH );
 	r_colorbits = ri.Cvar_Get( "r_colorbits", "0", CVAR_ARCHIVE | CVAR_LATCH );
 	r_stereo = ri.Cvar_Get( "r_stereo", "0", CVAR_ARCHIVE | CVAR_LATCH );
-#ifdef __linux__
-	r_stencilbits = ri.Cvar_Get( "r_stencilbits", "0", CVAR_ARCHIVE | CVAR_LATCH );
-#else
 	r_stencilbits = ri.Cvar_Get( "r_stencilbits", "8", CVAR_ARCHIVE | CVAR_LATCH );
-#endif
 	r_depthbits = ri.Cvar_Get( "r_depthbits", "0", CVAR_ARCHIVE | CVAR_LATCH );
 	r_overBrightBits = ri.Cvar_Get ("r_overBrightBits", "1", CVAR_ARCHIVE | CVAR_LATCH );
 	r_ignorehwgamma = ri.Cvar_Get( "r_ignorehwgamma", "0", CVAR_ARCHIVE | CVAR_LATCH);
diff --git a/code/renderer/tr_local.h b/code/renderer/tr_local.h
index d68e79c..a91ae16 100644
--- a/code/renderer/tr_local.h
+++ b/code/renderer/tr_local.h
@@ -1041,9 +1041,6 @@ extern cvar_t	*r_ignorehwgamma;		// overrides hardware gamma capabilities
 
 extern cvar_t	*r_allowExtensions;				// global enable/disable of OpenGL extensions
 extern cvar_t	*r_ext_compressed_textures;		// these control use of specific extensions
-extern cvar_t	*r_ext_gamma_control;
-extern cvar_t	*r_ext_texenv_op;
-extern cvar_t	*r_ext_multitexture;
 extern cvar_t	*r_ext_compiled_vertex_array;
 extern cvar_t	*r_ext_texture_env_add;
 
diff --git a/code/renderer/tr_shade.c b/code/renderer/tr_shade.c
index 6f22b7c..324f52c 100644
--- a/code/renderer/tr_shade.c
+++ b/code/renderer/tr_shade.c
@@ -43,8 +43,8 @@ This is just for OpenGL conformance testing, it should never be the fastest
 static void APIENTRY R_ArrayElementDiscrete( GLint index ) {
 	qglColor4ubv( tess.svars.colors[ index ] );
 	if ( glState.currenttmu ) {
-		qglMultiTexCoord2fARB( 0, tess.svars.texcoords[ 0 ][ index ][0], tess.svars.texcoords[ 0 ][ index ][1] );
-		qglMultiTexCoord2fARB( 1, tess.svars.texcoords[ 1 ][ index ][0], tess.svars.texcoords[ 1 ][ index ][1] );
+		qglMultiTexCoord2f( 0, tess.svars.texcoords[ 0 ][ index ][0], tess.svars.texcoords[ 0 ][ index ][1] );
+		qglMultiTexCoord2f( 1, tess.svars.texcoords[ 1 ][ index ][0], tess.svars.texcoords[ 1 ][ index ][1] );
 	} else {
 		qglTexCoord2fv( tess.svars.texcoords[ 0 ][ index ] );
 	}
diff --git a/code/renderer/tr_shader.c b/code/renderer/tr_shader.c
index 275e32d..8aa9f65 100644
--- a/code/renderer/tr_shader.c
+++ b/code/renderer/tr_shader.c
@@ -1761,7 +1761,7 @@ static qboolean CollapseMultitexture( void ) {
 	int i;
 	textureBundle_t tmpBundle;
 
-	if ( !qglActiveTextureARB ) {
+	if ( glConfig.numTextureUnits < 2 ) {
 		return qfalse;
 	}
 
diff --git a/code/renderer/tr_types.h b/code/renderer/tr_types.h
index 4edbaf5..bb917cf 100644
--- a/code/renderer/tr_types.h
+++ b/code/renderer/tr_types.h
@@ -175,7 +175,7 @@ typedef struct {
 	char					extensions_string[BIG_INFO_STRING];
 
 	int						maxTextureSize;			// queried from GL
-	int						maxActiveTextures;		// multitexture ability
+	int						numTextureUnits;		// multitexture ability
 
 	int						colorBits, depthBits, stencilBits;
 
diff --git a/code/sdl/sdl_glimp.c b/code/sdl/sdl_glimp.c
index b75380b..bd2dc24 100644
--- a/code/sdl/sdl_glimp.c
+++ b/code/sdl/sdl_glimp.c
@@ -70,10 +70,6 @@ static SDL_Surface *screen = NULL;
 
 cvar_t *r_allowSoftwareGL; // Don't abort out if a hardware visual can't be obtained
 
-PFNGLMULTITEXCOORD2FARBPROC qglMultiTexCoord2fARB;
-PFNGLACTIVETEXTUREARBPROC qglActiveTextureARB;
-PFNGLCLIENTACTIVETEXTUREARBPROC qglClientActiveTextureARB;
-
 PFNGLLOCKARRAYSEXTPROC qglLockArraysEXT;
 PFNGLUNLOCKARRAYSEXTPROC qglUnlockArraysEXT;
 
@@ -380,46 +376,6 @@ static void GLimp_InitExtensions( void )
 		ri.Printf( PRINT_ALL, "...GL_EXT_texture_env_add not found\n" );
 	}
 
-	// GL_ARB_multitexture
-	qglMultiTexCoord2fARB = NULL;
-	qglActiveTextureARB = NULL;
-	qglClientActiveTextureARB = NULL;
-	if ( Q_stristr( glConfig.extensions_string, "GL_ARB_multitexture" ) )
-	{
-		if ( r_ext_multitexture->value )
-		{
-			qglMultiTexCoord2fARB = ( PFNGLMULTITEXCOORD2FARBPROC ) SDL_GL_GetProcAddress( "glMultiTexCoord2fARB" );
-			qglActiveTextureARB = ( PFNGLACTIVETEXTUREARBPROC ) SDL_GL_GetProcAddress( "glActiveTextureARB" );
-			qglClientActiveTextureARB = ( PFNGLCLIENTACTIVETEXTUREARBPROC ) SDL_GL_GetProcAddress( "glClientActiveTextureARB" );
-
-			if ( qglActiveTextureARB )
-			{
-				GLint glint = 0;
-				qglGetIntegerv( GL_MAX_TEXTURE_UNITS_ARB, &glint );
-				glConfig.maxActiveTextures = (int) glint;
-				if ( glConfig.maxActiveTextures > 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 ( Q_stristr( glConfig.extensions_string, "GL_EXT_compiled_vertex_array" ) )
 	{
@@ -490,7 +446,7 @@ void GLimp_Init( void )
 	{
 		if( r_mode->integer != R_MODE_FALLBACK )
 		{
-			ri.Printf( PRINT_ALL, "Setting r_mode %d failed, falling back on r_mode %d",
+			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, r_fullscreen->integer ) )
 				success = qfalse;
@@ -515,6 +471,11 @@ void GLimp_Init( void )
 	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 ) );
 
+	// multitexturing
+	qglGetIntegerv( GL_MAX_TEXTURE_UNITS, (GLint *)&glConfig.numTextureUnits );
+	if( glConfig.numTextureUnits < 2 )
+		ri.Printf( PRINT_ALL, "Insufficient texture units for multitexturing\n" );
+
 	// initialize extensions
 	GLimp_InitExtensions( );