/**************************************************************************
 * 
 * Copyright 2005 Tungsten Graphics, Inc., Cedar Park, Texas.
 * 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"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * 
 **************************************************************************/

#include "main/glheader.h"
#include "main/context.h"
#include "main/enums.h"
#include "main/imports.h"
#include "main/macros.h"
#include "main/mtypes.h"

#include "swrast_setup/swrast_setup.h"
#include "swrast/swrast.h"
#include "tnl/tnl.h"
#include "brw_context.h"

#define FILE_DEBUG_FLAG DEBUG_FALLBACKS

static GLboolean do_check_fallback(struct brw_context *brw)
{
   struct gl_context *ctx = &brw->intel.ctx;
   GLuint i;

   if (brw->intel.no_rast) {
      DBG("FALLBACK: rasterization disabled\n");
      return GL_TRUE;
   }

   /* _NEW_RENDERMODE
    */
   if (ctx->RenderMode != GL_RENDER) {
      DBG("FALLBACK: render mode\n");
      return GL_TRUE;
   }

   /* _NEW_TEXTURE:
    */
   for (i = 0; i < BRW_MAX_TEX_UNIT; i++) {
      struct gl_texture_unit *texUnit = &ctx->Texture.Unit[i];
      if (texUnit->_ReallyEnabled) {
	 struct gl_texture_object *tex_obj = texUnit->_Current;
	 struct gl_texture_image *texImage = tex_obj->Image[0][tex_obj->BaseLevel];
	 if (texImage->Border) {
	    DBG("FALLBACK: texture border\n");
	    return GL_TRUE;
	 }
      }
   }

   return GL_FALSE;
}

static void check_fallback(struct brw_context *brw)
{
   brw->intel.Fallback = do_check_fallback(brw);
}

const struct brw_tracked_state brw_check_fallback = {
   .dirty = {
      .mesa = _NEW_RENDERMODE | _NEW_TEXTURE | _NEW_STENCIL,
      .brw  = 0,
      .cache = 0
   },
   .prepare = check_fallback
};




/**
 * Called by the INTEL_FALLBACK() macro.
 * NOTE: this is a no-op for the i965 driver.  The brw->intel.Fallback
 * field is treated as a boolean, not a bitmask.  It's only set in a
 * couple of places.
 */
void intelFallback( struct intel_context *intel, GLuint bit, GLboolean mode )
{
}