src/mesa/swrast_setup/ss_context.c

   1 /* $Id: ss_context.c,v 1.19 2002/10/24 23:57:25 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  4.1
   6  *
   7  * Copyright (C) 1999-2002  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 "imports.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 GLboolean
  53 _swsetup_CreateContext( GLcontext *ctx )
  54 {
  55    TNLcontext *tnl = TNL_CONTEXT(ctx);
  56    SScontext *swsetup = (SScontext *)CALLOC(sizeof(SScontext));
  57
  58    if (!swsetup)
  59       return GL_FALSE;
  60
  61    swsetup->verts = (SWvertex *) ALIGN_CALLOC( sizeof(SWvertex) * tnl->vb.Size,
  62                                                32);
  63    if (!swsetup->verts) {
  64       FREE(swsetup);
  65       return GL_FALSE;
  66    }
  67
  68    ctx->swsetup_context = swsetup;
  69
  70    swsetup->NewState = ~0;
  71    _swsetup_vb_init( ctx );
  72    _swsetup_trifuncs_init( ctx );
  73
  74    return GL_TRUE;
  75 }
  76
  77 void
  78 _swsetup_DestroyContext( GLcontext *ctx )
  79 {
  80    SScontext *swsetup = SWSETUP_CONTEXT(ctx);
  81
  82    if (swsetup) {
  83       if (swsetup->verts)
  84          ALIGN_FREE(swsetup->verts);
  85
  86       if (swsetup->ChanSecondaryColor.Ptr)
  87          ALIGN_FREE(swsetup->ChanSecondaryColor.Ptr);
  88
  89       if (swsetup->ChanColor.Ptr)
  90          ALIGN_FREE(swsetup->ChanColor.Ptr);
  91
  92       FREE(swsetup);
  93       ctx->swsetup_context = 0;
  94    }
  95 }
  96
  97 static void
  98 _swsetup_RenderPrimitive( GLcontext *ctx, GLenum mode )
  99 {
 100    SWSETUP_CONTEXT(ctx)->render_prim = mode;
 101    _swrast_render_primitive( ctx, mode );
 102 }
 103
 104 /*
 105  * We patch this function into tnl->Driver.Render.Start.
 106  * It's called when we start rendering a vertex buffer.
 107  */
 108 static void
 109 _swsetup_RenderStart( GLcontext *ctx )
 110 {
 111    SScontext *swsetup = SWSETUP_CONTEXT(ctx);
 112    GLuint new_state = swsetup->NewState;
 113
 114    if (new_state & _SWSETUP_NEW_RENDERINDEX) {
 115       _swsetup_choose_trifuncs( ctx );
 116    }
 117
 118    if (new_state & _SWSETUP_NEW_VERTS) {
 119       _swsetup_choose_rastersetup_func( ctx );
 120    }
 121
 122    swsetup->NewState = 0;
 123
 124    _swrast_render_start( ctx );
 125 }
 126
 127 /*
 128  * We patch this function into tnl->Driver.Render.Finish.
 129  * It's called when we finish rendering a vertex buffer.
 130  */
 131 static void
 132 _swsetup_RenderFinish( GLcontext *ctx )
 133 {
 134    _swrast_render_finish( ctx );
 135 }
 136
 137 void
 138 _swsetup_InvalidateState( GLcontext *ctx, GLuint new_state )
 139 {
 140    SScontext *swsetup = SWSETUP_CONTEXT(ctx);
 141    swsetup->NewState |= new_state;
 142 }
 143
 144
 145 void
 146 _swsetup_Wakeup( GLcontext *ctx )
 147 {
 148    TNLcontext *tnl = TNL_CONTEXT(ctx);
 149    tnl->Driver.Render.Start = _swsetup_RenderStart;
 150    tnl->Driver.Render.Finish = _swsetup_RenderFinish;
 151    tnl->Driver.Render.PrimitiveNotify = _swsetup_RenderPrimitive;
 152    /* interp */
 153    /* copypv */
 154    tnl->Driver.Render.ClippedPolygon = _tnl_RenderClippedPolygon; /* new */
 155    tnl->Driver.Render.ClippedLine = _tnl_RenderClippedLine; /* new */
 156    /* points */
 157    /* line */
 158    /* triangle */
 159    /* quad */
 160    tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
 161    tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
 162    tnl->Driver.Render.ResetLineStipple = _swrast_ResetLineStipple;
 163    /* buildvertices */
 164    tnl->Driver.Render.Multipass = 0;
 165    _tnl_need_projected_coords( ctx, GL_TRUE );
 166    _swsetup_InvalidateState( ctx, ~0 );
 167 }