src/mesa/swrast_setup/ss_context.c

   1 /* $Id: ss_context.c,v 1.15 2001/07/17 19:39:32 keithw Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.5
   6  *
   7  * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  * Authors:
  27  *    Keith Whitwell <keithw@valinux.com>
  28  */
  29
  30 #include "glheader.h"
  31 #include "mem.h"
  32 #include "ss_context.h"
  33 #include "ss_triangle.h"
  34 #include "ss_vb.h"
  35 #include "swrast_setup.h"
  36 #include "tnl/tnl.h"
  37 #include "tnl/t_context.h"
  38 #include "tnl/t_pipeline.h"
  39
  40
  41 #define _SWSETUP_NEW_VERTS (_NEW_RENDERMODE|    \
  42                             _NEW_POLYGON|       \
  43                             _NEW_LIGHT|         \
  44                             _NEW_TEXTURE|       \
  45                             _NEW_COLOR|         \
  46                             _NEW_FOG|           \
  47                             _NEW_POINT)
  48
  49 #define _SWSETUP_NEW_RENDERINDEX (_NEW_POLYGON|_NEW_LIGHT)
  50
  51
  52
  53 GLboolean
  54 _swsetup_CreateContext( GLcontext *ctx )
  55 {
  56    TNLcontext *tnl = TNL_CONTEXT(ctx);
  57    SScontext *swsetup = (SScontext *)CALLOC(sizeof(SScontext));
  58
  59    if (!swsetup)
  60       return GL_FALSE;
  61
  62    swsetup->verts = (SWvertex *) ALIGN_MALLOC( sizeof(SWvertex) * tnl->vb.Size,
  63                                                32);
  64    if (!swsetup->verts) {
  65       FREE(swsetup);
  66       return GL_FALSE;
  67    }
  68
  69    ctx->swsetup_context = swsetup;
  70
  71    swsetup->NewState = ~0;
  72    _swsetup_vb_init( ctx );
  73    _swsetup_trifuncs_init( ctx );
  74
  75    return GL_TRUE;
  76 }
  77
  78 void
  79 _swsetup_DestroyContext( GLcontext *ctx )
  80 {
  81    SScontext *swsetup = SWSETUP_CONTEXT(ctx);
  82
  83    if (swsetup) {
  84       if (swsetup->verts)
  85          ALIGN_FREE(swsetup->verts);
  86
  87       if (swsetup->ChanSecondaryColor.Ptr)
  88          ALIGN_FREE(swsetup->ChanSecondaryColor.Ptr);
  89
  90       if (swsetup->ChanColor.Ptr)
  91          ALIGN_FREE(swsetup->ChanColor.Ptr);
  92
  93       FREE(swsetup);
  94       ctx->swsetup_context = 0;
  95    }
  96 }
  97
  98 static void
  99 _swsetup_RenderPrimitive( GLcontext *ctx, GLenum mode )
 100 {
 101    SWSETUP_CONTEXT(ctx)->render_prim = mode;
 102 }
 103
 104 static void
 105 _swsetup_RenderStart( GLcontext *ctx )
 106 {
 107    SScontext *swsetup = SWSETUP_CONTEXT(ctx);
 108    GLuint new_state = swsetup->NewState;
 109
 110    if (new_state & _SWSETUP_NEW_RENDERINDEX) {
 111       _swsetup_choose_trifuncs( ctx );
 112    }
 113
 114    if (new_state & _SWSETUP_NEW_VERTS) {
 115       _swsetup_choose_rastersetup_func( ctx );
 116    }
 117
 118    swsetup->NewState = 0;
 119
 120    if (swsetup->Driver.Start)
 121       swsetup->Driver.Start( ctx );
 122 }
 123
 124 static void
 125 _swsetup_RenderFinish( GLcontext *ctx )
 126 {
 127    SScontext *swsetup = SWSETUP_CONTEXT(ctx);
 128
 129    _swrast_flush( ctx );
 130
 131    if (swsetup->Driver.Finish)
 132       swsetup->Driver.Finish( ctx );
 133 }
 134
 135 void
 136 _swsetup_InvalidateState( GLcontext *ctx, GLuint new_state )
 137 {
 138    SScontext *swsetup = SWSETUP_CONTEXT(ctx);
 139    swsetup->NewState |= new_state;
 140 }
 141
 142
 143 void
 144 _swsetup_Wakeup( GLcontext *ctx )
 145 {
 146    TNLcontext *tnl = TNL_CONTEXT(ctx);
 147    tnl->Driver.Render.Start = _swsetup_RenderStart;
 148    tnl->Driver.Render.Finish = _swsetup_RenderFinish;
 149    tnl->Driver.Render.PrimitiveNotify = _swsetup_RenderPrimitive;
 150    /* interp */
 151    /* copypv */
 152    tnl->Driver.Render.ClippedPolygon = _tnl_RenderClippedPolygon; /* new */
 153    tnl->Driver.Render.ClippedLine = _tnl_RenderClippedLine; /* new */
 154    /* points */
 155    /* line */
 156    /* triangle */
 157    /* quad */
 158    tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
 159    tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
 160    tnl->Driver.Render.ResetLineStipple = _swrast_ResetLineStipple;
 161    /* buildvertices */
 162    tnl->Driver.Render.Multipass = 0;
 163    _tnl_need_projected_coords( ctx, GL_TRUE );
 164    _swsetup_InvalidateState( ctx, ~0 );
 165 }