src/mesa/tnl/t_vp_build.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.1
   4  *
   5  * Copyright (C) 2007  Tungsten Graphics   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * TUNGSTEN GRAPHICS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  21  * WHETHER IN
  22  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  23  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 /**
  27  * \file t_vp_build.c
  28  * Create a vertex program to execute the current fixed function T&L pipeline.
  29  * \author Keith Whitwell
  30  */
  31
  32
  33 #include "main/glheader.h"
  34 #include "main/ffvertex_prog.h"
  35 #include "main/dd.h"
  36 #include "t_vp_build.h"
  37
  38
  39 /**
  40  * XXX This should go away someday, but still referenced by some drivers...
  41  */
  42 void _tnl_UpdateFixedFunctionProgram( struct gl_context *ctx )
  43 {
  44    const struct gl_vertex_program *prev = ctx->VertexProgram._Current;
  45
  46    if (!ctx->VertexProgram._Current ||
  47        ctx->VertexProgram._Current == ctx->VertexProgram._TnlProgram) {
  48       ctx->VertexProgram._Current
  49          = ctx->VertexProgram._TnlProgram
  50          = _mesa_get_fixed_func_vertex_program(ctx);
  51    }
  52
  53    /* Tell the driver about the change.  Could define a new target for
  54     * this?
  55     */
  56    if (ctx->VertexProgram._Current != prev && ctx->Driver.BindProgram) {
  57       ctx->Driver.BindProgram(ctx, GL_VERTEX_PROGRAM_ARB,
  58                             (struct gl_program *) ctx->VertexProgram._Current);
  59    }
  60 }