Added __glExtensionBiIsEnabled and __GLXcontext::gl_extension_bits. This

enables libGL to query which extension are exported to applications.

Refactored array-query functionality (from glGet*v) in src/glx/x11/single2.c.

Massive re-write of indirect vertex array support.  The most noticable
effect is that glDrawElements now generates DrawArrays protocol.  The
side-effects (and the main reasons for the re-work) are that it is much
easier to add support for new arrays (e.g., GL_VERTEX_ATTRIB_ARRAY,
GL_WEIGHT_ARRAY_ARB, etc.) and it is much easier to add support for the new
DrawArrays protocol (required to support ARB_vertex_buffer_object).

These changes were primarilly tested with progs/demos/isosurf.

1 files changed, 13 insertions, 4 deletions

diff --git a/src/glx/x11/glxextensions.h b/src/glx/x11/glxextensions.h
index e7d0248a6f..c64561b5c8 100644
--- a/src/glx/x11/glxextensions.h
+++ b/src/glx/x11/glxextensions.h
@@ -216,16 +216,25 @@ enum {
    GL_SUN_multi_draw_arrays_bit = GL_EXT_multi_draw_arrays_bit
 };
 
-extern GLboolean __glXExtensionBitIsEnabled( __GLXscreenConfigs *psc, unsigned bit );
+#define __GL_EXT_BYTES   ((__NUM_GL_EXTS + 7) / 8)
+
+struct __GLXscreenConfigsRec;
+struct __GLXcontextRec;
+
+extern GLboolean __glXExtensionBitIsEnabled( struct __GLXscreenConfigsRec *psc, unsigned bit );
 extern const char * __glXGetClientExtensions( void );
-extern void __glXCalculateUsableExtensions( __GLXscreenConfigs *psc,
+extern void __glXCalculateUsableExtensions( struct __GLXscreenConfigsRec *psc,
     GLboolean display_is_direct_capable, int server_minor_version );
-extern void __glXScrEnableExtension( __GLXscreenConfigs *psc, const char * name );
-extern void __glXCalculateUsableGLExtensions( __GLXcontext * gc,
+extern void __glXScrEnableExtension( struct __GLXscreenConfigsRec *psc, const char * name );
+extern void __glXCalculateUsableGLExtensions( struct __GLXcontextRec * gc,
     const char * server_string, int major_version, int minor_version );
 extern void __glXGetGLVersion( int * major_version, int * minor_version );
 extern char * __glXGetClientGLExtensionString( void );
 
+extern GLboolean __glExtensionBitIsEnabled( const struct __GLXcontextRec * gc, 
+    unsigned bit );
+
+
 /* Source-level backwards compatibility with old drivers. They won't
  * find the respective functions, though. 
  */