mesa: refactor: move _mesa_update_minmax/histogram() into image.c

[mesa.git] / src / mesa / main / imports.c

diff --git a/src/mesa/main/imports.c b/src/mesa/main/imports.c
index 2a132502389cba783ed8258ff193538203e2dc73..d798f80e25316612ba3d0b6616c8113ed1079896 100644 (file)
--- a/src/mesa/main/imports.c
+++ b/src/mesa/main/imports.c
@@ -12,14 +12,6 @@
  *
  * Eventually, I want to move roll the glheader.h file into this.
  *
- * The OpenGL SI's __GLimports structure allows per-context specification of
- * replacements for the standard C lib functions.  In practice that's probably
- * never needed; compile-time replacements are far more likely.
- *
- * The _mesa_*() functions defined here don't in general take a context
- * parameter.  I guess we can change that someday, if need be.
- * So for now, the __GLimports stuff really isn't used.
- *
  * \todo Functions still needed:
  * - scanf
  * - qsort
@@ -28,9 +20,9 @@
 
 /*
  * Mesa 3-D graphics library
- * Version:  6.5
+ * Version:  7.1
  *
- * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2007  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"),
@@ -262,7 +254,7 @@ _mesa_memset16( unsigned short *dst, unsigned short val, size_t n )
       *dst++ = val;
 }
 
-/** Wrapper around either memcpy() or bzero() */
+/** Wrapper around either memset() or bzero() */
 void
 _mesa_bzero( void *dst, size_t n )
 {
@@ -550,26 +542,24 @@ int
 _mesa_ffs(int i)
 {
 #if (defined(_WIN32) && !defined(__MINGW32__) ) || defined(__IBMC__) || defined(__IBMCPP__)
-   register int bit = 0;
-   if (i != 0) {
-      if ((i & 0xffff) == 0) {
-         bit += 16;
-         i >>= 16;
-      }
-      if ((i & 0xff) == 0) {
-         bit += 8;
-         i >>= 8;
-      }
-      if ((i & 0xf) == 0) {
-         bit += 4;
-         i >>= 4;
-      }
-      while ((i & 1) == 0) {
-         bit++;
-         i >>= 1;
-      }
+   register int bit = 1;
+   if ((i & 0xffff) == 0) {
+      bit += 16;
+      i >>= 16;
    }
-   return bit;
+   if ((i & 0xff) == 0) {
+      bit += 8;
+      i >>= 8;
+   }
+   if ((i & 0xf) == 0) {
+      bit += 4;
+      i >>= 4;
+   }
+   if ((i & 0x3) == 0) {
+      bit += 2;
+      i >>= 2;
+   }
+   return (i) ? (bit + ((i + 1) & 0x01)) : 0;
 #else
    return ffs(i);
 #endif
@@ -583,7 +573,11 @@ _mesa_ffs(int i)
  *          if no bits set.
  */
 int
+#ifdef __MINGW32__
+_mesa_ffsll(long val)
+#else
 _mesa_ffsll(long long val)
+#endif
 {
 #ifdef ffsll
    return ffsll(val);
@@ -592,11 +586,11 @@ _mesa_ffsll(long long val)
 
    assert(sizeof(val) == 8);
 
-   bit = ffs(val);
+   bit = _mesa_ffs(val);
    if (bit != 0)
       return bit;
 
-   bit = ffs(val >> 32);
+   bit = _mesa_ffs(val >> 32);
    if (bit != 0)
       return 32 + bit;
 
@@ -906,12 +900,10 @@ _mesa_sprintf( char *str, const char *fmt, ... )
 void
 _mesa_printf( const char *fmtString, ... )
 {
-   char s[MAXSTRING];
    va_list args;
    va_start( args, fmtString );  
-   vsnprintf(s, MAXSTRING, fmtString, args);
+   vfprintf(stderr, fmtString, args);
    va_end( args );
-   fprintf(stderr,"%s", s);
 }
 
 /** Wrapper around vsprintf() */
@@ -929,14 +921,11 @@ _mesa_vsprintf( char *str, const char *fmt, va_list args )
 /*@{*/
 
 /**
- * Display a warning.
+ * Report a warning (a recoverable error condition) to stderr if
+ * either DEBUG is defined or the MESA_DEBUG env var is set.
  *
  * \param ctx GL context.
  * \param fmtString printf() alike format string.
- * 
- * If debugging is enabled (either at compile-time via the DEBUG macro, or
- * run-time via the MESA_DEBUG environment variable), prints the warning to
- * stderr via fprintf().
  */
 void
 _mesa_warning( GLcontext *ctx, const char *fmtString, ... )
@@ -959,13 +948,11 @@ _mesa_warning( GLcontext *ctx, const char *fmtString, ... )
 }
 
 /**
- * This function is called when the Mesa user has stumbled into a code
- * path which may not be implemented fully or correctly.
+ * Report an internla implementation problem.
+ * Prints the message to stderr via fprintf().
  *
  * \param ctx GL context.
  * \param s problem description string.
- *
- * Prints the message to stderr via fprintf().
  */
 void
 _mesa_problem( const GLcontext *ctx, const char *fmtString, ... )
@@ -983,18 +970,16 @@ _mesa_problem( const GLcontext *ctx, const char *fmtString, ... )
 }
 
 /**
- * Display an error message.
+ * Record an OpenGL state error.  These usually occur when the users
+ * passes invalid parameters to a GL function.
  *
- * If in debug mode, print error message.
- * Also, record the error code by calling _mesa_record_error().
+ * If debugging is enabled (either at compile-time via the DEBUG macro, or
+ * run-time via the MESA_DEBUG environment variable), report the error with
+ * _mesa_debug().
  * 
  * \param ctx the GL context.
  * \param error the error value.
  * \param fmtString printf() style format string, followed by optional args
- *         
- * If debugging is enabled (either at compile-time via the DEBUG macro, or
- * run-time via the MESA_DEBUG environment variable), interperts the error code and 
- * prints the error message via _mesa_debug().
  */
 void
 _mesa_error( GLcontext *ctx, GLenum error, const char *fmtString, ... )
@@ -1064,12 +1049,11 @@ _mesa_error( GLcontext *ctx, GLenum error, const char *fmtString, ... )
 }  
 
 /**
- * Report debug information.
+ * Report debug information.  Print error message to stderr via fprintf().
+ * No-op if DEBUG mode not enabled.
  * 
  * \param ctx GL context.
- * \param fmtString printf() alike format string.
- * 
- * Prints the message to stderr via fprintf().
+ * \param fmtString printf()-style format string, followed by optional args.
  */
 void
 _mesa_debug( const GLcontext *ctx, const char *fmtString, ... )