New _mesa_debug() function to replace fprintf() calls.

Some source files updated to call _mesa_debug(), but not finished.
Added __GLimports as a parameter to _mesa_create/init_context() and
updated drivers accordingly.
Fleshed-out more of the __GLimports and __GLexports functionality.
Removed run-time config file support (config.c)

22 files changed, 330 insertions, 154 deletions

diff --git a/src/mesa/main/Makefile.DJ b/src/mesa/main/Makefile.DJ
index afe95f0c367..4749bfd849d 100644
--- a/src/mesa/main/Makefile.DJ
+++ b/src/mesa/main/Makefile.DJ
@@ -60,7 +60,6 @@ CORE_SOURCES = \
 	buffers.c \

 	clip.c \

 	colortab.c \

-	config.c \

 	context.c \

 	convolve.c \

 	debug.c \

diff --git a/src/mesa/main/Makefile.OSMesa16 b/src/mesa/main/Makefile.OSMesa16
index eeb32a264b6..4613f1a2703 100644
--- a/src/mesa/main/Makefile.OSMesa16
+++ b/src/mesa/main/Makefile.OSMesa16
@@ -1,4 +1,4 @@
-# $Id: Makefile.OSMesa16,v 1.6 2002/02/02 21:41:58 brianp Exp $
+# $Id: Makefile.OSMesa16,v 1.7 2002/06/13 04:28:29 brianp Exp $
 
 # Mesa 3-D graphics library
 # Version:  4.1
@@ -31,7 +31,6 @@ CORE_SOURCES = \
 	buffers.c \
 	clip.c \
 	colortab.c \
-	config.c \
 	context.c \
 	convolve.c \
 	debug.c \
diff --git a/src/mesa/main/Makefile.X11 b/src/mesa/main/Makefile.X11
index 8ab3a308499..19a90b03b23 100644
--- a/src/mesa/main/Makefile.X11
+++ b/src/mesa/main/Makefile.X11
@@ -1,4 +1,4 @@
-# $Id: Makefile.X11,v 1.67 2002/04/09 14:58:03 keithw Exp $
+# $Id: Makefile.X11,v 1.68 2002/06/13 04:28:29 brianp Exp $
 
 # Mesa 3-D graphics library
 # Version:  4.1
@@ -31,7 +31,6 @@ CORE_SOURCES = \
 	buffers.c \
 	clip.c \
 	colortab.c \
-	config.c \
 	context.c \
 	convolve.c \
 	debug.c \
diff --git a/src/mesa/main/Makefile.ugl b/src/mesa/main/Makefile.ugl
index 92ca94c9f27..f8f00fa411b 100644
--- a/src/mesa/main/Makefile.ugl
+++ b/src/mesa/main/Makefile.ugl
@@ -61,7 +61,6 @@ GL_SOURCES = \
 	buffers.c \
 	clip.c \
 	colortab.c \
-	config.c \
 	context.c \
 	convolve.c \
 	debug.c \
diff --git a/src/mesa/main/Makefile.win b/src/mesa/main/Makefile.win
index a536d1e4ea1..77814140a71 100644
--- a/src/mesa/main/Makefile.win
+++ b/src/mesa/main/Makefile.win
@@ -46,7 +46,6 @@ CORE_SRCS = \
 	buffers.c \
 	clip.c \
 	colortab.c \
-	config.c \
 	context.c \
 	convolve.c \
 	debug.c \
diff --git a/src/mesa/main/attrib.c b/src/mesa/main/attrib.c
index b75fe4d6259..f5f611784b8 100644
--- a/src/mesa/main/attrib.c
+++ b/src/mesa/main/attrib.c
@@ -1,4 +1,4 @@
-/* $Id: attrib.c,v 1.65 2002/06/07 16:01:03 brianp Exp $ */
+/* $Id: attrib.c,v 1.66 2002/06/13 04:28:29 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -119,8 +119,8 @@ _mesa_PushAttrib(GLbitfield mask)
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
-   if (MESA_VERBOSE&VERBOSE_API)
-      fprintf(stderr, "glPushAttrib %x\n", (int)mask);
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug("glPushAttrib %x\n", (int) mask);
 
    if (ctx->AttribStackDepth >= MAX_ATTRIB_STACK_DEPTH) {
       _mesa_error( ctx, GL_STACK_OVERFLOW, "glPushAttrib" );
@@ -801,9 +801,8 @@ _mesa_PopAttrib(void)
 
    while (attr) {
 
-      if (MESA_VERBOSE&VERBOSE_API) {
-	 fprintf(stderr, "glPopAttrib %s\n",
-                 _mesa_lookup_enum_by_nr(attr->kind));
+      if (MESA_VERBOSE & VERBOSE_API) {
+         _mesa_debug("glPopAttrib %s\n", _mesa_lookup_enum_by_nr(attr->kind));
       }
 
       switch (attr->kind) {
diff --git a/src/mesa/main/blend.c b/src/mesa/main/blend.c
index b00e834d4f2..6d5b6a13f55 100644
--- a/src/mesa/main/blend.c
+++ b/src/mesa/main/blend.c
@@ -1,10 +1,10 @@
-/* $Id: blend.c,v 1.34 2001/09/14 21:36:43 brianp Exp $ */
+/* $Id: blend.c,v 1.35 2002/06/13 04:28:29 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.5
+ * Version:  4.1
  *
- * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -46,7 +46,7 @@ _mesa_BlendFunc( GLenum sfactor, GLenum dfactor )
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
-      fprintf(stderr, "glBlendFunc %s %s\n",
+      _mesa_debug("glBlendFunc %s %s\n",
 	      _mesa_lookup_enum_by_nr(sfactor),
 	      _mesa_lookup_enum_by_nr(dfactor));
 
@@ -127,7 +127,7 @@ _mesa_BlendFuncSeparateEXT( GLenum sfactorRGB, GLenum dfactorRGB,
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
-      fprintf(stderr, "glBlendFuncSeparate %s %s %s %s\n",
+      _mesa_debug("glBlendFuncSeparate %s %s %s %s\n",
 	      _mesa_lookup_enum_by_nr(sfactorRGB),
 	      _mesa_lookup_enum_by_nr(dfactorRGB),
 	      _mesa_lookup_enum_by_nr(sfactorA),
@@ -268,7 +268,7 @@ _mesa_BlendEquation( GLenum mode )
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
-      fprintf(stderr, "glBlendEquation %s\n",
+      _mesa_debug("glBlendEquation %s\n",
 	      _mesa_lookup_enum_by_nr(mode));
 
    switch (mode) {
@@ -445,7 +445,7 @@ _mesa_ColorMask( GLboolean red, GLboolean green,
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "glColorMask %d %d %d %d\n", red, green, blue, alpha);
+      _mesa_debug("glColorMask %d %d %d %d\n", red, green, blue, alpha);
 
    /* Shouldn't have any information about channel depth in core mesa
     * -- should probably store these as the native booleans:
diff --git a/src/mesa/main/buffers.c b/src/mesa/main/buffers.c
index e1706c32553..295921e1d0b 100644
--- a/src/mesa/main/buffers.c
+++ b/src/mesa/main/buffers.c
@@ -1,4 +1,4 @@
-/* $Id: buffers.c,v 1.34 2002/04/19 00:23:08 brianp Exp $ */
+/* $Id: buffers.c,v 1.35 2002/06/13 04:28:29 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -97,7 +97,7 @@ _mesa_Clear( GLbitfield mask )
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "glClear 0x%x\n", mask);
+      _mesa_debug("glClear 0x%x\n", mask);
 
    if (mask & ~(GL_COLOR_BUFFER_BIT |
                 GL_DEPTH_BUFFER_BIT |
@@ -146,7 +146,7 @@ _mesa_DrawBuffer( GLenum mode )
 
 
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "glDrawBuffer %s\n", _mesa_lookup_enum_by_nr(mode));
+      _mesa_debug("glDrawBuffer %s\n", _mesa_lookup_enum_by_nr(mode));
 
    switch (mode) {
       case GL_AUX0:
@@ -298,7 +298,7 @@ _mesa_ReadBuffer( GLenum mode )
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "glReadBuffer %s\n", _mesa_lookup_enum_by_nr(mode));
+      _mesa_debug("glReadBuffer %s\n", _mesa_lookup_enum_by_nr(mode));
 
    switch (mode) {
       case GL_AUX0:
@@ -360,7 +360,7 @@ _mesa_ResizeBuffersMESA( void )
    GLcontext *ctx = _mesa_get_current_context();
 
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "glResizeBuffersMESA\n");
+      _mesa_debug("glResizeBuffersMESA\n");
 
    if (ctx) {
       ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH( ctx );
@@ -416,7 +416,7 @@ _mesa_Scissor( GLint x, GLint y, GLsizei width, GLsizei height )
    }
 
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "glScissor %d %d %d %d\n", x, y, width, height);
+      _mesa_debug("glScissor %d %d %d %d\n", x, y, width, height);
 
    if (x == ctx->Scissor.X &&
        y == ctx->Scissor.Y &&
diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c
index 420bfa46914..bb436590636 100644
--- a/src/mesa/main/context.c
+++ b/src/mesa/main/context.c
@@ -1,4 +1,4 @@
-/* $Id: context.c,v 1.163 2002/05/27 17:04:52 brianp Exp $ */
+/* $Id: context.c,v 1.164 2002/06/13 04:28:29 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -41,7 +41,6 @@
 #include "get.h"
 #include "glthread.h"
 #include "hash.h"
-#include "imports.h"
 #include "light.h"
 #include "macros.h"
 #include "mem.h"
@@ -78,13 +77,19 @@ int MESA_DEBUG_FLAGS = 0;
 #endif
 
 
+static void
+free_shared_state( GLcontext *ctx, struct gl_shared_state *ss );
+
 
 /**********************************************************************/
 /*****       OpenGL SI-style interface (new in Mesa 3.5)          *****/
 /**********************************************************************/
 
-static GLboolean
-_mesa_DestroyContext(__GLcontext *gc)
+/* Called by window system/device driver (via gc->exports.destroyCurrent())
+ * when the rendering context is to be destroyed.
+ */
+GLboolean
+_mesa_destroyContext(__GLcontext *gc)
 {
    if (gc) {
       _mesa_free_context_data(gc);
@@ -93,6 +98,133 @@ _mesa_DestroyContext(__GLcontext *gc)
    return GL_TRUE;
 }
 
+/* Called by window system/device driver (via gc->exports.loseCurrent())
+ * when the rendering context is made non-current.
+ */
+GLboolean
+_mesa_loseCurrent(__GLcontext *gc)
+{
+   /* XXX unbind context from thread */
+   return GL_TRUE;
+}
+
+/* Called by window system/device driver (via gc->exports.makeCurrent())
+ * when the rendering context is made current.
+ */
+GLboolean
+_mesa_makeCurrent(__GLcontext *gc)
+{
+   /* XXX bind context to thread */
+   return GL_TRUE;
+}
+
+/* Called by window system/device driver - yadda, yadda, yadda.
+ * See above comments.
+ */
+GLboolean
+_mesa_shareContext(__GLcontext *gc, __GLcontext *gcShare)
+{
+   if (gc && gcShare && gc->Shared && gcShare->Shared) {
+      gc->Shared->RefCount--;
+      if (gc->Shared->RefCount == 0) {
+         free_shared_state(gc, gc->Shared);
+      }
+      gc->Shared = gcShare->Shared;
+      gc->Shared->RefCount++;
+      return GL_TRUE;
+   }
+   else {
+      return GL_FALSE;
+   }
+}
+
+GLboolean
+_mesa_copyContext(__GLcontext *dst, const __GLcontext *src, GLuint mask)
+{
+   if (dst && src) {
+      _mesa_copy_context( src, dst, mask );
+      return GL_TRUE;
+   }
+   else {
+      return GL_FALSE;
+   }
+}
+
+GLboolean
+_mesa_forceCurrent(__GLcontext *gc)
+{
+   return GL_TRUE;
+}
+
+GLboolean
+_mesa_notifyResize(__GLcontext *gc)
+{
+   GLint x, y;
+   GLuint width, height;
+   __GLdrawablePrivate *d = gc->imports.getDrawablePrivate(gc);
+   if (!d || !d->getDrawableSize)
+      return GL_FALSE;
+   d->getDrawableSize( d, &x, &y, &width, &height );
+   /* update viewport, resize software buffers, etc. */
+   return GL_TRUE;
+}
+
+void
+_mesa_notifyDestroy(__GLcontext *gc)
+{
+}
+
+/* Called by window system just before swapping buffers.
+ * We have to finish any pending rendering.
+ */
+void
+_mesa_notifySwapBuffers(__GLcontext *gc)
+{
+   FLUSH_VERTICES( gc, 0 );
+}
+
+struct __GLdispatchStateRec *
+_mesa_dispatchExec(__GLcontext *gc)
+{
+   return NULL;
+}
+
+void
+_mesa_beginDispatchOverride(__GLcontext *gc)
+{
+}
+
+void
+_mesa_endDispatchOverride(__GLcontext *gc)
+{
+}
+
+/* Setup the exports.  The window system will call these functions
+ * when it needs Mesa to do something.
+ * NOTE: Device drivers should override these functions!  For example,
+ * the Xlib driver should plug in the XMesa*-style functions into this
+ * structure.  The XMesa-style functions should then call the _mesa_*
+ * version of these functions.  This is an approximation to OO design
+ * (inheritance and virtual functions).
+ */
+static void
+_mesa_init_default_exports(__GLexports *exports)
+{
+    exports->destroyContext = _mesa_destroyContext;
+    exports->loseCurrent = _mesa_loseCurrent;
+    exports->makeCurrent = _mesa_makeCurrent;
+    exports->shareContext = _mesa_shareContext;
+    exports->copyContext = _mesa_copyContext;
+    exports->forceCurrent = _mesa_forceCurrent;
+    exports->notifyResize = _mesa_notifyResize;
+    exports->notifyDestroy = _mesa_notifyCestroy;
+    exports->notifySwapBuffers = _mesa_notifySwapBuffers;
+    exports->dispatchExec = _mesa_dispatchExec;
+    exports->beginDispatchOverride = _mesa_beginDispatchOverride;
+    exports->endDispatchOverride = _mesa_endDispatchOverride;
+}
+
+
 
 /* exported OpenGL SI interface */
 __GLcontext *
@@ -104,7 +236,7 @@ __glCoreCreateContext(__GLimports *imports, __GLcontextModes *modes)
     if (ctx == NULL) {
 	return NULL;
     }
-   ctx->Driver.CurrentExecPrimitive=0;
+    ctx->Driver.CurrentExecPrimitive=0;  /* XXX why is this here??? */
     ctx->imports = *imports;
 
     _mesa_initialize_visual(&ctx->Visual,
@@ -124,10 +256,7 @@ __glCoreCreateContext(__GLimports *imports, __GLcontextModes *modes)
                             modes->accumAlphaBits,
                             0);
 
-    /* KW: was imports->wscx */
-    _mesa_initialize_context(ctx, &ctx->Visual, NULL, imports->other, GL_FALSE);
-
-    ctx->exports.destroyContext = _mesa_DestroyContext;
+    _mesa_initialize_context(ctx, &ctx->Visual, NULL, imports);
 
     return ctx;
 }
@@ -148,12 +277,6 @@ __glCoreNopDispatch(void)
 
 
 /**********************************************************************/
-/*****                  Context and Thread management             *****/
-/**********************************************************************/
-
-
-
-/**********************************************************************/
 /***** GL Visual allocation/destruction                           *****/
 /**********************************************************************/
 
@@ -1472,25 +1595,30 @@ GLboolean
 _mesa_initialize_context( GLcontext *ctx,
                           const GLvisual *visual,
                           GLcontext *share_list,
-                          void *driver_ctx,
-                          GLboolean direct )
+                          const __GLimports *imports )
 {
    GLuint dispatchSize;
 
-   (void) direct;  /* not used */
+   ASSERT(imports);
+   ASSERT(imports->other); /* other points to the device driver's context */
 
    /* misc one-time initializations */
    one_time_init();
 
+   /* initialize the exports (Mesa functions called by the window system) */
+    _mesa_init_default_exports( &(ctx->exports) );
+
+#if 0
    /**
     ** OpenGL SI stuff
     **/
    if (!ctx->imports.malloc) {
-      _mesa_InitDefaultImports(&ctx->imports, driver_ctx, NULL);
+      _mesa_init_default_imports(&ctx->imports, driver_ctx);
    }
    /* exports are setup by the device driver */
+#endif
 
-   ctx->DriverCtx = driver_ctx;
+   ctx->DriverCtx = imports->other;
    ctx->Visual = *visual;
    ctx->DrawBuffer = NULL;
    ctx->ReadBuffer = NULL;
@@ -1643,21 +1771,20 @@ _mesa_initialize_context( GLcontext *ctx,
  * Allocate and initialize a GLcontext structure.
  * Input:  visual - a GLvisual pointer (we copy the struct contents)
  *         sharelist - another context to share display lists with or NULL
- *         driver_ctx - pointer to device driver's context state struct
+ *         imports - points to a fully-initialized __GLimports object.
  * Return:  pointer to a new __GLcontextRec or NULL if error.
  */
 GLcontext *
 _mesa_create_context( const GLvisual *visual,
                       GLcontext *share_list,
-                      void *driver_ctx,
-                      GLboolean direct )
+                      const __GLimports *imports )
 {
    GLcontext *ctx = (GLcontext *) CALLOC( sizeof(GLcontext) );
    if (!ctx) {
       return NULL;
    }
-   ctx->Driver.CurrentExecPrimitive = 0;
-   if (_mesa_initialize_context(ctx, visual, share_list, driver_ctx, direct)) {
+   ctx->Driver.CurrentExecPrimitive = 0;  /* XXX why is this here??? */
+   if (_mesa_initialize_context(ctx, visual, share_list, imports)) {
       return ctx;
    }
    else {
@@ -1879,15 +2006,6 @@ _mesa_copy_context( const GLcontext *src, GLcontext *dst, GLuint mask )
 }
 
 
-/*
- * Set the current context, binding the given frame buffer to the context.
- */
-void
-_mesa_make_current( GLcontext *newCtx, GLframebuffer *buffer )
-{
-   _mesa_make_current2( newCtx, buffer, buffer );
-}
-
 
 static void print_info( void )
 {
@@ -1918,6 +2036,16 @@ static void print_info( void )
 
 
 /*
+ * Set the current context, binding the given frame buffer to the context.
+ */
+void
+_mesa_make_current( GLcontext *newCtx, GLframebuffer *buffer )
+{
+   _mesa_make_current2( newCtx, buffer, buffer );
+}
+
+
+/*
  * Bind the given context to the given draw-buffer and read-buffer
  * and make it the current context for this thread.
  */
@@ -2133,6 +2261,20 @@ _mesa_error( GLcontext *ctx, GLenum error, const char *where )
 }
 
 
+/*
+ * Call this to report debug information.
+ */
+#ifdef DEBUG
+void
+_mesa_debug( const char *fmtString, ... )
+{
+   va_list args;
+   va_start( args, fmtString );  
+   (void) vfprintf( stderr, fmtString, args );
+   va_end( args );
+}
+#endif
+
 
 void
 _mesa_Finish( void )
diff --git a/src/mesa/main/context.h b/src/mesa/main/context.h
index e0bb2ad09f6..49555ff6e2c 100644
--- a/src/mesa/main/context.h
+++ b/src/mesa/main/context.h
@@ -1,4 +1,4 @@
-/* $Id: context.h,v 1.28 2001/12/14 02:50:01 brianp Exp $ */
+/* $Id: context.h,v 1.29 2002/06/13 04:28:29 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -53,9 +53,7 @@
 
 
 /*
- * Create/destroy a GLvisual.  A GLvisual is like a GLX visual.  It describes
- * the colorbuffer, depth buffer, stencil buffer and accum buffer which will
- * be used by the GL context and framebuffer.
+ * Create/destroy a GLvisual.
  */
 extern GLvisual *
 _mesa_create_visual( GLboolean rgbFlag,
@@ -98,9 +96,7 @@ _mesa_destroy_visual( GLvisual *vis );
 
 
 /*
- * Create/destroy a GLframebuffer.  A GLframebuffer is like a GLX drawable.
- * It bundles up the depth buffer, stencil buffer and accum buffers into a
- * single entity.
+ * Create/destroy a GLframebuffer.
  */
 extern GLframebuffer *
 _mesa_create_framebuffer( const GLvisual *visual,
@@ -126,21 +122,18 @@ _mesa_destroy_framebuffer( GLframebuffer *buffer );
 
 
 /*
- * Create/destroy a GLcontext.  A GLcontext is like a GLX context.  It
- * contains the rendering state.
+ * Create/destroy a GLcontext.
  */
 extern GLcontext *
 _mesa_create_context( const GLvisual *visual,
                       GLcontext *share_list,
-                      void *driver_ctx,
-                      GLboolean direct);
+                      const __GLimports *imports );
 
 extern GLboolean
 _mesa_initialize_context( GLcontext *ctx,
                           const GLvisual *visual,
                           GLcontext *share_list,
-                          void *driver_ctx,
-                          GLboolean direct );
+                          const __GLimports *imports );
 
 extern void
 _mesa_free_context_data( GLcontext *ctx );
@@ -182,10 +175,50 @@ _mesa_get_current_context(void);
 
 
 
+/* OpenGL SI-style export functions. */
+
+extern GLboolean
+_mesa_destroyContext(__GLcontext *gc);
+
+extern GLboolean
+_mesa_loseCurrent(__GLcontext *gc);
+
+extern GLboolean
+_mesa_makeCurrent(__GLcontext *gc);
+
+extern GLboolean
+_mesa_shareContext(__GLcontext *gc, __GLcontext *gcShare);
+
+extern GLboolean
+_mesa_copyContext(__GLcontext *dst, const __GLcontext *src, GLuint mask);
+
+extern GLboolean
+_mesa_forceCurrent(__GLcontext *gc);
+
+extern GLboolean
+_mesa_notifyResize(__GLcontext *gc);
+
 extern void
-_mesa_swapbuffers(GLcontext *ctx);
+_mesa_notifyDestroy(__GLcontext *gc);
+
+extern void
+_mesa_notifySwapBuffers(__GLcontext *gc);
+
+extern void
+_mesa_dispatchExec(__GLcontext *gc);
+
+extern void
+_mesa_beginDispatchOverride(__GLcontext *gc);
+
+extern void
+_mesa_endDispatchOverride(__GLcontext *gc);
 
 
+
+
+extern void
+_mesa_swapbuffers(GLcontext *ctx);
+
 extern struct _glapi_table *
 _mesa_get_dispatch(GLcontext *ctx);
 
@@ -204,7 +237,10 @@ _mesa_warning( const GLcontext *ctx, const char *s );
 extern void
 _mesa_error( GLcontext *ctx, GLenum error, const char *s );
 
-
+#ifdef DEBUG
+extern void
+_mesa_debug( const char *fmtString, ... );
+#endif
 
 extern void
 _mesa_Finish( void );
@@ -213,13 +249,4 @@ extern void
 _mesa_Flush( void );
 
 
-
-extern void
-_mesa_read_config_file(GLcontext *ctx);
-
-extern void
-_mesa_register_config_var(const char *name,
-                          void (*notify)( const char *, int ));
-
-
 #endif
diff --git a/src/mesa/main/depth.c b/src/mesa/main/depth.c
index 36daf5c5920..3c25550e948 100644
--- a/src/mesa/main/depth.c
+++ b/src/mesa/main/depth.c
@@ -1,10 +1,10 @@
-/* $Id: depth.c,v 1.28 2001/03/29 16:50:32 brianp Exp $ */
+/* $Id: depth.c,v 1.29 2002/06/13 04:28:29 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.5
+ * Version:  4.1
  *
- * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -70,7 +70,7 @@ _mesa_DepthFunc( GLenum func )
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
-      fprintf(stderr, "glDepthFunc %s\n", _mesa_lookup_enum_by_nr(func));
+      _mesa_debug("glDepthFunc %s\n", _mesa_lookup_enum_by_nr(func));
 
    switch (func) {
    case GL_LESS:    /* (default) pass if incoming z < stored z */
@@ -106,7 +106,7 @@ _mesa_DepthMask( GLboolean flag )
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE))
-      fprintf(stderr, "glDepthMask %d\n", flag);
+      _mesa_debug("glDepthMask %d\n", flag);
 
    /*
     * GL_TRUE indicates depth buffer writing is enabled (default)
diff --git a/src/mesa/main/dlist.c b/src/mesa/main/dlist.c
index 3ae3f67bc14..6b67b31675d 100644
--- a/src/mesa/main/dlist.c
+++ b/src/mesa/main/dlist.c
@@ -1,4 +1,4 @@
-/* $Id: dlist.c,v 1.88 2002/05/29 15:16:01 brianp Exp $ */
+/* $Id: dlist.c,v 1.89 2002/06/13 04:28:29 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -4145,7 +4145,7 @@ execute_list( GLcontext *ctx, GLuint list )
    if (ctx->Driver.BeginCallList)
       ctx->Driver.BeginCallList( ctx, list );
 
-/*     fprintf(stderr, "execute list %d\n", list); */
+/*     _mesa_debug("execute list %d\n", list); */
 /*     mesa_print_display_list( list );  */
 
    ctx->CallDepth++;
@@ -4936,7 +4936,7 @@ _mesa_NewList( GLuint list, GLenum mode )
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    if (MESA_VERBOSE&VERBOSE_API)
-      fprintf(stderr, "glNewList %u %s\n", list, _mesa_lookup_enum_by_nr(mode));
+      _mesa_debug("glNewList %u %s\n", list, _mesa_lookup_enum_by_nr(mode));
 
    if (list==0) {
       _mesa_error( ctx, GL_INVALID_VALUE, "glNewList" );
@@ -4983,7 +4983,7 @@ _mesa_EndList( void )
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
    if (MESA_VERBOSE&VERBOSE_API)
-      fprintf(stderr, "glEndList\n");
+      _mesa_debug("glEndList\n");
 
    /* Check that a list is under construction */
    if (!ctx->CurrentListPtr) {
@@ -5026,7 +5026,7 @@ _mesa_CallList( GLuint list )
 
 
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "_mesa_CallList %d\n", list); 
+      _mesa_debug("_mesa_CallList %d\n", list); 
 
 /*     mesa_print_display_list( list ); */
 
@@ -5059,7 +5059,7 @@ _mesa_CallLists( GLsizei n, GLenum type, const GLvoid *lists )
    GLboolean save_compile_flag;
 
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "_mesa_CallLists %d\n", n); 
+      _mesa_debug("_mesa_CallLists %d\n", n); 
 
    /* Save the CompileFlag status, turn it off, execute display list,
     * and restore the CompileFlag.
diff --git a/src/mesa/main/enable.c b/src/mesa/main/enable.c
index 87db3d5a6f2..5d29149ca06 100644
--- a/src/mesa/main/enable.c
+++ b/src/mesa/main/enable.c
@@ -1,4 +1,4 @@
-/* $Id: enable.c,v 1.63 2002/05/27 17:04:53 brianp Exp $ */
+/* $Id: enable.c,v 1.64 2002/06/13 04:28:29 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -173,10 +173,10 @@ _mesa_DisableClientState( GLenum cap )
 void _mesa_set_enable( GLcontext *ctx, GLenum cap, GLboolean state )
 {
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "%s %s (newstate is %x)\n",
-	      state ? "glEnable" : "glDisable",
-	      _mesa_lookup_enum_by_nr(cap),
-	      ctx->NewState);
+      _mesa_debug("%s %s (newstate is %x)\n",
+                  state ? "glEnable" : "glDisable",
+                  _mesa_lookup_enum_by_nr(cap),
+                  ctx->NewState);
 
    switch (cap) {
       case GL_ALPHA_TEST:
diff --git a/src/mesa/main/feedback.c b/src/mesa/main/feedback.c
index fcd87146524..94ed866fdc2 100644
--- a/src/mesa/main/feedback.c
+++ b/src/mesa/main/feedback.c
@@ -1,10 +1,10 @@
-/* $Id: feedback.c,v 1.24 2001/03/29 17:08:26 keithw Exp $ */
+/* $Id: feedback.c,v 1.25 2002/06/13 04:28:29 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.5
+ * Version:  4.1
  *
- * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -340,7 +340,7 @@ _mesa_RenderMode( GLenum mode )
    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
 
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "glRenderMode %s\n", _mesa_lookup_enum_by_nr(mode));
+      _mesa_debug("glRenderMode %s\n", _mesa_lookup_enum_by_nr(mode));
 
    FLUSH_VERTICES(ctx, _NEW_RENDERMODE);
 
diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c
index 0705f884e68..5770db95333 100644
--- a/src/mesa/main/get.c
+++ b/src/mesa/main/get.c
@@ -1,4 +1,4 @@
-/* $Id: get.c,v 1.79 2002/05/27 17:04:53 brianp Exp $ */
+/* $Id: get.c,v 1.80 2002/06/13 04:28:29 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -128,7 +128,7 @@ _mesa_GetBooleanv( GLenum pname, GLboolean *params )
    FLUSH_VERTICES(ctx, 0);
 
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "glGetBooleanv %s\n", _mesa_lookup_enum_by_nr(pname));
+      _mesa_debug("glGetBooleanv %s\n", _mesa_lookup_enum_by_nr(pname));
 
    if (ctx->Driver.GetBooleanv
        && (*ctx->Driver.GetBooleanv)(ctx, pname, params))
@@ -1465,7 +1465,7 @@ _mesa_GetDoublev( GLenum pname, GLdouble *params )
    FLUSH_VERTICES(ctx, 0);
 
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "glGetDoublev %s\n", _mesa_lookup_enum_by_nr(pname));
+      _mesa_debug("glGetDoublev %s\n", _mesa_lookup_enum_by_nr(pname));
 
    if (ctx->Driver.GetDoublev && (*ctx->Driver.GetDoublev)(ctx, pname, params))
       return;
@@ -2708,7 +2708,7 @@ _mesa_GetFloatv( GLenum pname, GLfloat *params )
    FLUSH_VERTICES(ctx, 0);
 
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "glGetFloatv %s\n", _mesa_lookup_enum_by_nr(pname));
+      _mesa_debug("glGetFloatv %s\n", _mesa_lookup_enum_by_nr(pname));
 
    if (ctx->Driver.GetFloatv && (*ctx->Driver.GetFloatv)(ctx, pname, params))
       return;
@@ -3920,7 +3920,7 @@ _mesa_GetIntegerv( GLenum pname, GLint *params )
    FLUSH_VERTICES(ctx, 0);
 
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "glGetIntegerv %s\n", _mesa_lookup_enum_by_nr(pname));
+      _mesa_debug("glGetIntegerv %s\n", _mesa_lookup_enum_by_nr(pname));
 
    if (ctx->Driver.GetIntegerv
        && (*ctx->Driver.GetIntegerv)(ctx, pname, params))
@@ -5171,7 +5171,7 @@ _mesa_GetPointerv( GLenum pname, GLvoid **params )
       return;
 
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "glGetPointerv %s\n", _mesa_lookup_enum_by_nr(pname));
+      _mesa_debug("glGetPointerv %s\n", _mesa_lookup_enum_by_nr(pname));
 
    if (ctx->Driver.GetPointerv
        && (*ctx->Driver.GetPointerv)(ctx, pname, params))
@@ -5271,7 +5271,7 @@ _mesa_GetError( void )
    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
 
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "glGetError <-- %s\n", _mesa_lookup_enum_by_nr(e));
+      _mesa_debug("glGetError <-- %s\n", _mesa_lookup_enum_by_nr(e));
 
    ctx->ErrorValue = (GLenum) GL_NO_ERROR;
    return e;
diff --git a/src/mesa/main/glheader.h b/src/mesa/main/glheader.h
index 3a66f618a20..8a9cf4b82b1 100644
--- a/src/mesa/main/glheader.h
+++ b/src/mesa/main/glheader.h
@@ -1,4 +1,4 @@
-/* $Id: glheader.h,v 1.26 2002/06/12 00:52:50 brianp Exp $ */
+/* $Id: glheader.h,v 1.27 2002/06/13 04:28:29 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -72,6 +72,9 @@
 #include "conf.h"
 #endif
 
+#ifdef DEBUG
+#include <stdarg.h>  /* for _mesa_debug() only */
+#endif
 
 
 #if defined(_WIN32) && !defined(__WIN32__) && !defined(__CYGWIN__)
diff --git a/src/mesa/main/hint.c b/src/mesa/main/hint.c
index e37cfb1a87d..d75823feb9e 100644
--- a/src/mesa/main/hint.c
+++ b/src/mesa/main/hint.c
@@ -1,10 +1,10 @@
-/* $Id: hint.c,v 1.10 2001/05/21 16:41:03 brianp Exp $ */
+/* $Id: hint.c,v 1.11 2002/06/13 04:28:29 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.5
+ * Version:  4.1
  *
- * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -50,7 +50,7 @@ GLboolean
 _mesa_try_Hint( GLcontext *ctx, GLenum target, GLenum mode )
 {
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "glHint %s %d\n", _mesa_lookup_enum_by_nr(target), mode);
+      _mesa_debug("glHint %s %d\n", _mesa_lookup_enum_by_nr(target), mode);
 
    if (mode != GL_NICEST && mode != GL_FASTEST && mode != GL_DONT_CARE) {
       _mesa_error(ctx, GL_INVALID_ENUM, "glHint(mode)");
diff --git a/src/mesa/main/imports.c b/src/mesa/main/imports.c
index 61fbf609157..b4e5dca930a 100644
--- a/src/mesa/main/imports.c
+++ b/src/mesa/main/imports.c
@@ -1,10 +1,10 @@
-/* $Id: imports.c,v 1.10 2001/07/16 15:54:23 brianp Exp $ */
+/* $Id: imports.c,v 1.11 2002/06/13 04:28:29 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.5
+ * Version:  4.1
  *
- * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -31,8 +31,9 @@
  * will call these functions in order to do memory allocation, simple I/O,
  * etc.
  *
- * Some drivers will need to implement these functions themselves but
- * many (most?) Mesa drivers will be fine using these.
+ * Some drivers will want to provide a specialed __GLimport object, but
+ * most Mesa drivers will be able to call _mesa_init_default_imports()
+ * and go with that.
  *
  * A server-side GL renderer will likely not use these functions since
  * the renderer should use the XFree86-wrapped system calls.
@@ -119,8 +120,12 @@ _mesa_atoi(__GLcontext *gc, const char *str)
 static int CAPI
 _mesa_sprintf(__GLcontext *gc, char *str, const char *fmt, ...)
 {
-   /* XXX fix this */
-   return sprintf(str, fmt);
+   int r;
+   va_list args;
+   va_start( args, fmt );  
+   r = vsprintf( str, fmt, args );
+   va_end( args );
+   return r;
 }
 
 static void * CAPI
@@ -138,8 +143,12 @@ _mesa_fclose(__GLcontext *gc, void *stream)
 static int CAPI
 _mesa_fprintf(__GLcontext *gc, void *stream, const char *fmt, ...)
 {
-   /* XXX fix this */
-   return fprintf((FILE *) stream, fmt);
+   int r;
+   va_list args;
+   va_start( args, fmt );  
+   r = vfprintf( (FILE *) stream, fmt, args );
+   va_end( args );
+   return r;
 }
 
 /* XXX this really is driver-specific and can't be here */
@@ -151,7 +160,7 @@ _mesa_GetDrawablePrivate(__GLcontext *gc)
 
 
 void
-_mesa_InitDefaultImports(__GLimports *imports, void *driverCtx, void *other)
+_mesa_init_default_imports(__GLimports *imports, void *driverCtx)
 {
    imports->malloc = _mesa_Malloc;
    imports->calloc = _mesa_Calloc;
@@ -166,6 +175,5 @@ _mesa_InitDefaultImports(__GLimports *imports, void *driverCtx, void *other)
    imports->fclose = _mesa_fclose;
    imports->fprintf = _mesa_fprintf;
    imports->getDrawablePrivate = _mesa_GetDrawablePrivate;
-/*     imports->wscx = driverCtx; */
    imports->other = driverCtx;
 }
diff --git a/src/mesa/main/imports.h b/src/mesa/main/imports.h
index cf4ca182b68..95bcf312a97 100644
--- a/src/mesa/main/imports.h
+++ b/src/mesa/main/imports.h
@@ -1,10 +1,10 @@
-/* $Id: imports.h,v 1.2 2001/03/12 00:48:38 gareth Exp $ */
+/* $Id: imports.h,v 1.3 2002/06/13 04:28:29 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.5
+ * Version:  4.1
  *
- * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -33,7 +33,7 @@
 
 
 extern void
-_mesa_InitDefaultImports(__GLimports *imports, void *driverCtx, void *other);
+_mesa_init_default_imports(__GLimports *imports, void *driverCtx);
 
 
 #endif
diff --git a/src/mesa/main/light.c b/src/mesa/main/light.c
index ee9d9d177e8..b50eba7e9d0 100644
--- a/src/mesa/main/light.c
+++ b/src/mesa/main/light.c
@@ -1,10 +1,10 @@
-/* $Id: light.c,v 1.49 2002/02/13 00:53:19 keithw Exp $ */
+/* $Id: light.c,v 1.50 2002/06/13 04:28:29 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.5
+ * Version:  4.1
  *
- * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -57,7 +57,7 @@ _mesa_ShadeModel( GLenum mode )
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "glShadeModel %s\n", _mesa_lookup_enum_by_nr(mode));
+      _mesa_debug("glShadeModel %s\n", _mesa_lookup_enum_by_nr(mode));
 
    if (mode != GL_FLAT && mode != GL_SMOOTH) {
       _mesa_error( ctx, GL_INVALID_ENUM, "glShadeModel" );
@@ -617,7 +617,7 @@ void _mesa_update_material( GLcontext *ctx,
       bitmask &= ~ctx->Light.ColorMaterialBitmask;
 
    if (MESA_VERBOSE&VERBOSE_IMMEDIATE)
-      fprintf(stderr, "_mesa_update_material, mask 0x%x\n", bitmask);
+      _mesa_debug("_mesa_update_material, mask 0x%x\n", bitmask);
 
    if (!bitmask)
       return;
@@ -717,19 +717,19 @@ void _mesa_update_material( GLcontext *ctx,
    if (0)
    {
       struct gl_material *mat = &ctx->Light.Material[0];
-      fprintf(stderr, "update_mat  emission : %f %f %f\n",
+      _mesa_debug("update_mat  emission : %f %f %f\n",
 	      mat->Emission[0],
 	      mat->Emission[1],
 	      mat->Emission[2]);
-      fprintf(stderr, "update_mat  specular : %f %f %f\n",
+      _mesa_debug("update_mat  specular : %f %f %f\n",
 	      mat->Specular[0],
 	      mat->Specular[1],
 	      mat->Specular[2]);
-      fprintf(stderr, "update_mat  diffuse : %f %f %f\n",
+      _mesa_debug("update_mat  diffuse : %f %f %f\n",
 	      mat->Diffuse[0],
 	      mat->Diffuse[1],
 	      mat->Diffuse[2]);
-      fprintf(stderr, "update_mat  ambient : %f %f %f\n",
+      _mesa_debug("update_mat  ambient : %f %f %f\n",
 	      mat->Ambient[0],
 	      mat->Ambient[1],
 	      mat->Ambient[2]);
@@ -754,7 +754,7 @@ void _mesa_update_color_material( GLcontext *ctx,
    GLuint bitmask = ctx->Light.ColorMaterialBitmask;
 
    if (MESA_VERBOSE&VERBOSE_IMMEDIATE)
-      fprintf(stderr, "_mesa_update_color_material, mask 0x%x\n", bitmask);
+      _mesa_debug("_mesa_update_color_material, mask 0x%x\n", bitmask);
 
    /* update emissive colors */
    if (bitmask & FRONT_EMISSION_BIT) {
@@ -834,19 +834,19 @@ void _mesa_update_color_material( GLcontext *ctx,
    if (0)
    {
       struct gl_material *mat = &ctx->Light.Material[0];
-      fprintf(stderr, "update_color_mat  emission : %f %f %f\n",
+      _mesa_debug("update_color_mat  emission : %f %f %f\n",
 	      mat->Emission[0],
 	      mat->Emission[1],
 	      mat->Emission[2]);
-      fprintf(stderr, "update_color_mat  specular : %f %f %f\n",
+      _mesa_debug("update_color_mat  specular : %f %f %f\n",
 	      mat->Specular[0],
 	      mat->Specular[1],
 	      mat->Specular[2]);
-      fprintf(stderr, "update_color_mat  diffuse : %f %f %f\n",
+      _mesa_debug("update_color_mat  diffuse : %f %f %f\n",
 	      mat->Diffuse[0],
 	      mat->Diffuse[1],
 	      mat->Diffuse[2]);
-      fprintf(stderr, "update_color_mat  ambient : %f %f %f\n",
+      _mesa_debug("update_color_mat  ambient : %f %f %f\n",
 	      mat->Ambient[0],
 	      mat->Ambient[1],
 	      mat->Ambient[2]);
@@ -868,7 +868,7 @@ _mesa_ColorMaterial( GLenum face, GLenum mode )
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    if (MESA_VERBOSE&VERBOSE_API)
-      fprintf(stderr, "glColorMaterial %s %s\n",
+      _mesa_debug("glColorMaterial %s %s\n",
 	      _mesa_lookup_enum_by_nr(face),
 	      _mesa_lookup_enum_by_nr(mode));
 
diff --git a/src/mesa/main/matrix.c b/src/mesa/main/matrix.c
index bef520a4679..8ccd65b94d0 100644
--- a/src/mesa/main/matrix.c
+++ b/src/mesa/main/matrix.c
@@ -1,10 +1,10 @@
-/* $Id: matrix.c,v 1.40 2002/04/22 20:00:16 alanh Exp $ */
+/* $Id: matrix.c,v 1.41 2002/06/13 04:28:29 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
  * Version:  4.1
  *
- * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -157,7 +157,7 @@ _mesa_PushMatrix( void )
    ASSERT_OUTSIDE_BEGIN_END(ctx);
 
    if (MESA_VERBOSE&VERBOSE_API)
-      fprintf(stderr, "glPushMatrix %s\n",
+      _mesa_debug("glPushMatrix %s\n",
 	      _mesa_lookup_enum_by_nr(ctx->Transform.MatrixMode));
 
    if (stack->Depth + 1 >= stack->MaxDepth) {
@@ -181,7 +181,7 @@ _mesa_PopMatrix( void )
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
    if (MESA_VERBOSE&VERBOSE_API)
-      fprintf(stderr, "glPopMatrix %s\n",
+      _mesa_debug("glPopMatrix %s\n",
 	      _mesa_lookup_enum_by_nr(ctx->Transform.MatrixMode));
 
    if (stack->Depth == 0) {
@@ -390,7 +390,7 @@ _mesa_set_viewport( GLcontext *ctx, GLint x, GLint y,
    }
 
    if (MESA_VERBOSE & VERBOSE_API)
-      fprintf(stderr, "glViewport %d %d %d %d\n", x, y, width, height);
+      _mesa_debug("glViewport %d %d %d %d\n", x, y, width, height);
 
    /* clamp width, and height to implementation dependent range */
    width  = CLAMP( width,  1, MAX_WIDTH );
@@ -446,7 +446,7 @@ _mesa_DepthRange( GLclampd nearval, GLclampd farval )
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
    if (MESA_VERBOSE&VERBOSE_API)
-      fprintf(stderr, "glDepthRange %f %f\n", nearval, farval);
+      _mesa_debug("glDepthRange %f %f\n", nearval, farval);
 
    n = (GLfloat) CLAMP( nearval, 0.0, 1.0 );
    f = (GLfloat) CLAMP( farval, 0.0, 1.0 );
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index cc6c40f7a23..5c7d642ba84 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -1,4 +1,4 @@
-/* $Id: mtypes.h,v 1.77 2002/06/06 16:31:24 brianp Exp $ */
+/* $Id: mtypes.h,v 1.78 2002/06/13 04:28:29 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -828,7 +828,7 @@ struct gl_texture_format {
                                  * GL_LUMINANCE_ALPHA, GL_RGB, GL_RGBA,
                                  * GL_COLOR_INDEX or GL_DEPTH_COMPONENT.
                                  */
-   GLenum Type;			/* Internal type as GL enum value */
+   GLenum Type;			/* Internal type as GL enum value - UNUSED?? */
 
    GLubyte RedBits;		/* Bits per texel component */
    GLubyte GreenBits;
@@ -1638,6 +1638,8 @@ struct gl_tnl_module {
 /**
  * This is the central context data structure for Mesa.  Almost all
  * OpenGL state is contained in this structure.
+ * Think of this as a base class from which device drivers will derive
+ * sub classes.
  */
 struct __GLcontextRec {
    /**