src/mesa/swrast_setup/ss_context.c

   1
   2 /*
   3  * Mesa 3-D graphics library
   4  * Version:  4.1
   5  *
   6  * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included
  16  * in all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 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  * Authors:
  26  *    Keith Whitwell <keith@tungstengraphics.com>
  27  */
  28
  29 #include "glheader.h"
  30 #include "imports.h"
  31 #include "ss_context.h"
  32 #include "ss_triangle.h"
  33 #include "ss_vb.h"
  34 #include "swrast_setup.h"
  35 #include "tnl/tnl.h"
  36 #include "tnl/t_context.h"
  37 #include "tnl/t_pipeline.h"
  38
  39
  40 #define _SWSETUP_NEW_VERTS (_NEW_RENDERMODE|    \
  41                             _NEW_POLYGON|       \
  42                             _NEW_LIGHT|         \
  43                             _NEW_TEXTURE|       \
  44                             _NEW_COLOR|         \
  45                             _NEW_FOG|           \
  46                             _NEW_POINT)
  47
  48 #define _SWSETUP_NEW_RENDERINDEX (_NEW_POLYGON|_NEW_LIGHT)
  49
  50
  51 GLboolean
  52 _swsetup_CreateContext( GLcontext *ctx )
  53 {
  54    TNLcontext *tnl = TNL_CONTEXT(ctx);
  55    SScontext *swsetup = (SScontext *)CALLOC(sizeof(SScontext));
  56
  57    if (!swsetup)
  58       return GL_FALSE;
  59
  60    swsetup->verts = (SWvertex *) ALIGN_CALLOC( sizeof(SWvertex) * tnl->vb.Size,
  61                                                32);
  62    if (!swsetup->verts) {
  63       FREE(swsetup);
  64       return GL_FALSE;
  65    }
  66
  67    ctx->swsetup_context = swsetup;
  68
  69    swsetup->NewState = ~0;
  70    _swsetup_vb_init( ctx );
  71    _swsetup_trifuncs_init( ctx );
  72
  73    return GL_TRUE;
  74 }
  75
  76 void
  77 _swsetup_DestroyContext( GLcontext *ctx )
  78 {
  79    SScontext *swsetup = SWSETUP_CONTEXT(ctx);
  80
  81    if (swsetup) {
  82       if (swsetup->verts)
  83          ALIGN_FREE(swsetup->verts);
  84
  85       if (swsetup->ChanSecondaryColor.Ptr)
  86          ALIGN_FREE(swsetup->ChanSecondaryColor.Ptr);
  87
  88       if (swsetup->ChanColor.Ptr)
  89          ALIGN_FREE(swsetup->ChanColor.Ptr);
  90
  91       FREE(swsetup);
  92       ctx->swsetup_context = 0;
  93    }
  94 }
  95
  96 static void
  97 _swsetup_RenderPrimitive( GLcontext *ctx, GLenum mode )
  98 {
  99    SWSETUP_CONTEXT(ctx)->render_prim = mode;
 100    _swrast_render_primitive( ctx, mode );
 101 }
 102
 103 /*
 104  * We patch this function into tnl->Driver.Render.Start.
 105  * It's called when we start rendering a vertex buffer.
 106  */
 107 static void
 108 _swsetup_RenderStart( GLcontext *ctx )
 109 {
 110    SScontext *swsetup = SWSETUP_CONTEXT(ctx);
 111    GLuint new_state = swsetup->NewState;
 112
 113    if (new_state & _SWSETUP_NEW_RENDERINDEX) {
 114       _swsetup_choose_trifuncs( ctx );
 115    }
 116
 117    if (new_state & _SWSETUP_NEW_VERTS) {
 118       _swsetup_choose_rastersetup_func( ctx );
 119    }
 120
 121    swsetup->NewState = 0;
 122
 123    _swrast_render_start( ctx );
 124 }
 125
 126 /*
 127  * We patch this function into tnl->Driver.Render.Finish.
 128  * It's called when we finish rendering a vertex buffer.
 129  */
 130 static void
 131 _swsetup_RenderFinish( GLcontext *ctx )
 132 {
 133    _swrast_render_finish( ctx );
 134 }
 135
 136 void
 137 _swsetup_InvalidateState( GLcontext *ctx, GLuint new_state )
 138 {
 139    SScontext *swsetup = SWSETUP_CONTEXT(ctx);
 140    swsetup->NewState |= new_state;
 141 }
 142
 143
 144 void
 145 _swsetup_Wakeup( GLcontext *ctx )
 146 {
 147    TNLcontext *tnl = TNL_CONTEXT(ctx);
 148    tnl->Driver.Render.Start = _swsetup_RenderStart;
 149    tnl->Driver.Render.Finish = _swsetup_RenderFinish;
 150    tnl->Driver.Render.PrimitiveNotify = _swsetup_RenderPrimitive;
 151    /* interp */
 152    /* copypv */
 153    tnl->Driver.Render.ClippedPolygon = _tnl_RenderClippedPolygon; /* new */
 154    tnl->Driver.Render.ClippedLine = _tnl_RenderClippedLine; /* new */
 155    /* points */
 156    /* line */
 157    /* triangle */
 158    /* quad */
 159    tnl->Driver.Render.PrimTabVerts = _tnl_render_tab_verts;
 160    tnl->Driver.Render.PrimTabElts = _tnl_render_tab_elts;
 161    tnl->Driver.Render.ResetLineStipple = _swrast_ResetLineStipple;
 162    /* buildvertices */
 163    tnl->Driver.Render.Multipass = 0;
 164    _tnl_need_projected_coords( ctx, GL_TRUE );
 165    _swsetup_InvalidateState( ctx, ~0 );
 166 }