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55 | pj | 1 | /* $Id: hint.c,v 1.1 2003-02-28 11:42:02 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 | |||
27 | |||
28 | #include "glheader.h" |
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29 | #include "enums.h" |
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30 | #include "context.h" |
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31 | #include "hint.h" |
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32 | #include "imports.h" |
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33 | |||
34 | |||
35 | |||
36 | void |
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37 | _mesa_Hint( GLenum target, GLenum mode ) |
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38 | { |
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39 | GET_CURRENT_CONTEXT(ctx); |
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40 | ASSERT_OUTSIDE_BEGIN_END(ctx); |
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41 | |||
42 | if (MESA_VERBOSE & VERBOSE_API) |
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43 | _mesa_debug(ctx, "glHint %s %d\n", |
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44 | _mesa_lookup_enum_by_nr(target), mode); |
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45 | |||
46 | if (mode != GL_NICEST && mode != GL_FASTEST && mode != GL_DONT_CARE) { |
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47 | _mesa_error(ctx, GL_INVALID_ENUM, "glHint(mode)"); |
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48 | return; |
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49 | } |
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50 | |||
51 | switch (target) { |
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52 | case GL_FOG_HINT: |
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53 | if (ctx->Hint.Fog == mode) |
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54 | return; |
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55 | FLUSH_VERTICES(ctx, _NEW_HINT); |
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56 | ctx->Hint.Fog = mode; |
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57 | break; |
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58 | case GL_LINE_SMOOTH_HINT: |
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59 | if (ctx->Hint.LineSmooth == mode) |
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60 | return; |
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61 | FLUSH_VERTICES(ctx, _NEW_HINT); |
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62 | ctx->Hint.LineSmooth = mode; |
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63 | break; |
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64 | case GL_PERSPECTIVE_CORRECTION_HINT: |
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65 | if (ctx->Hint.PerspectiveCorrection == mode) |
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66 | return; |
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67 | FLUSH_VERTICES(ctx, _NEW_HINT); |
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68 | ctx->Hint.PerspectiveCorrection = mode; |
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69 | break; |
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70 | case GL_POINT_SMOOTH_HINT: |
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71 | if (ctx->Hint.PointSmooth == mode) |
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72 | return; |
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73 | FLUSH_VERTICES(ctx, _NEW_HINT); |
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74 | ctx->Hint.PointSmooth = mode; |
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75 | break; |
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76 | case GL_POLYGON_SMOOTH_HINT: |
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77 | if (ctx->Hint.PolygonSmooth == mode) |
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78 | return; |
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79 | FLUSH_VERTICES(ctx, _NEW_HINT); |
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80 | ctx->Hint.PolygonSmooth = mode; |
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81 | break; |
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82 | |||
83 | /* GL_EXT_clip_volume_hint */ |
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84 | case GL_CLIP_VOLUME_CLIPPING_HINT_EXT: |
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85 | if (ctx->Hint.ClipVolumeClipping == mode) |
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86 | return; |
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87 | FLUSH_VERTICES(ctx, _NEW_HINT); |
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88 | ctx->Hint.ClipVolumeClipping = mode; |
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89 | break; |
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90 | |||
91 | /* GL_ARB_texture_compression */ |
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92 | case GL_TEXTURE_COMPRESSION_HINT_ARB: |
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93 | if (!ctx->Extensions.ARB_texture_compression) { |
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94 | _mesa_error(ctx, GL_INVALID_ENUM, "glHint(target)"); |
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95 | return; |
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96 | } |
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97 | if (ctx->Hint.TextureCompression == mode) |
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98 | return; |
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99 | FLUSH_VERTICES(ctx, _NEW_HINT); |
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100 | ctx->Hint.TextureCompression = mode; |
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101 | break; |
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102 | |||
103 | /* GL_SGIS_generate_mipmap */ |
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104 | case GL_GENERATE_MIPMAP_HINT_SGIS: |
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105 | if (!ctx->Extensions.SGIS_generate_mipmap) { |
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106 | _mesa_error(ctx, GL_INVALID_ENUM, "glHint(target)"); |
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107 | return; |
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108 | } |
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109 | if (ctx->Hint.GenerateMipmap == mode) |
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110 | return; |
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111 | FLUSH_VERTICES(ctx, _NEW_HINT); |
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112 | ctx->Hint.GenerateMipmap = mode; |
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113 | break; |
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114 | |||
115 | default: |
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116 | _mesa_error(ctx, GL_INVALID_ENUM, "glHint(target)"); |
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117 | return; |
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118 | } |
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119 | |||
120 | if (ctx->Driver.Hint) { |
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121 | (*ctx->Driver.Hint)( ctx, target, mode ); |
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122 | } |
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123 | } |