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56 | pj | 1 | /* $Id: t_imm_alloc.c,v 1.1 2003-02-28 11:48:06 pj Exp $ */ |
2 | |||
3 | /* |
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4 | * Mesa 3-D graphics library |
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5 | * Version: 4.1 |
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6 | * |
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7 | * Copyright (C) 1999-2002 Brian Paul All Rights Reserved. |
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8 | * |
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9 | * Permission is hereby granted, free of charge, to any person obtaining a |
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10 | * copy of this software and associated documentation files (the "Software"), |
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11 | * to deal in the Software without restriction, including without limitation |
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12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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13 | * and/or sell copies of the Software, and to permit persons to whom the |
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14 | * Software is furnished to do so, subject to the following conditions: |
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15 | * |
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16 | * The above copyright notice and this permission notice shall be included |
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17 | * in all copies or substantial portions of the Software. |
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18 | * |
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19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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20 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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22 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
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23 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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24 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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25 | * |
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26 | * Authors: |
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27 | * Keith Whitwell <keith@tungstengraphics.com> |
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28 | */ |
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29 | |||
30 | #include "glheader.h" |
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31 | #include "imports.h" |
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32 | #include "mtypes.h" |
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33 | |||
34 | #include "t_imm_alloc.h" |
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35 | |||
36 | |||
37 | static int id = 0; /* give each struct immediate a unique ID number */ |
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38 | |||
39 | static struct immediate *real_alloc_immediate( GLcontext *ctx ) |
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40 | { |
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41 | struct immediate *IM = ALIGN_CALLOC_STRUCT( immediate, 32 ); |
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42 | |||
43 | if (!IM) |
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44 | return 0; |
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45 | |||
46 | /* memset(IM, 0, sizeof(*IM)); */ |
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47 | |||
48 | IM->id = id++; |
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49 | IM->ref_count = 0; |
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50 | IM->FlushElt = 0; |
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51 | IM->LastPrimitive = IMM_MAX_COPIED_VERTS; |
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52 | IM->Count = IMM_MAX_COPIED_VERTS; |
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53 | IM->Start = IMM_MAX_COPIED_VERTS; |
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54 | IM->Material = 0; |
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55 | IM->MaterialMask = 0; |
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56 | IM->MaxTextureUnits = ctx->Const.MaxTextureUnits; |
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57 | IM->TexSize = 0; |
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58 | IM->NormalLengthPtr = 0; |
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59 | |||
60 | IM->CopyTexSize = 0; |
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61 | IM->CopyStart = IM->Start; |
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62 | |||
63 | return IM; |
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64 | } |
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65 | |||
66 | |||
67 | static void real_free_immediate( struct immediate *IM ) |
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68 | { |
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69 | static int freed = 0; |
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70 | |||
71 | if (IM->Material) { |
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72 | FREE( IM->Material ); |
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73 | FREE( IM->MaterialMask ); |
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74 | IM->Material = 0; |
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75 | IM->MaterialMask = 0; |
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76 | } |
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77 | |||
78 | if (IM->NormalLengthPtr) |
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79 | ALIGN_FREE( IM->NormalLengthPtr ); |
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80 | |||
81 | ALIGN_FREE( IM ); |
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82 | freed++; |
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83 | /* printf("outstanding %d\n", id - freed); */ |
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84 | } |
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85 | |||
86 | |||
87 | /* Cache a single allocated immediate struct. |
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88 | */ |
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89 | struct immediate *_tnl_alloc_immediate( GLcontext *ctx ) |
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90 | { |
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91 | TNLcontext *tnl = TNL_CONTEXT(ctx); |
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92 | struct immediate *tmp = tnl->freed_immediate; |
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93 | |||
94 | if (tmp) { |
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95 | tnl->freed_immediate = 0; |
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96 | return tmp; |
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97 | } |
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98 | else |
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99 | return real_alloc_immediate( ctx ); |
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100 | } |
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101 | |||
102 | /* May be called after tnl is destroyed. |
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103 | */ |
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104 | void _tnl_free_immediate( GLcontext *ctx, struct immediate *IM ) |
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105 | { |
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106 | TNLcontext *tnl = TNL_CONTEXT(ctx); |
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107 | |||
108 | ASSERT(IM->ref_count == 0); |
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109 | |||
110 | if (IM->NormalLengthPtr) { |
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111 | ALIGN_FREE(IM->NormalLengthPtr); |
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112 | IM->NormalLengthPtr = NULL; |
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113 | } |
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114 | |||
115 | if (!tnl) { |
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116 | real_free_immediate( IM ); |
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117 | } |
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118 | else { |
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119 | if (tnl->freed_immediate) |
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120 | real_free_immediate( tnl->freed_immediate ); |
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121 | |||
122 | tnl->freed_immediate = IM; |
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123 | } |
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124 | } |