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55 | pj | 1 | /* $Id: texobj.c,v 1.1 2003-02-28 11:42:05 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 | #include "glheader.h" |
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28 | #include "colortab.h" |
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29 | #include "context.h" |
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30 | #include "enums.h" |
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31 | #include "hash.h" |
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32 | #include "imports.h" |
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33 | #include "macros.h" |
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34 | #include "teximage.h" |
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35 | #include "texstate.h" |
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36 | #include "texobj.h" |
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37 | #include "mtypes.h" |
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38 | |||
39 | |||
40 | /* |
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41 | * Allocate a new texture object and add it to the linked list of texture |
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42 | * objects. If name>0 then also insert the new texture object into the hash |
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43 | * table. |
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44 | * Input: shared - the shared GL state structure to contain the texture object |
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45 | * name - integer name for the texture object |
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46 | * target - either GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, |
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47 | * GL_TEXTURE_CUBE_MAP_ARB or GL_TEXTURE_RECTANGLE_NV |
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48 | * zero is ok for the sake of GenTextures() |
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49 | * Return: pointer to new texture object |
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50 | */ |
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51 | struct gl_texture_object * |
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52 | _mesa_alloc_texture_object( struct gl_shared_state *shared, |
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53 | GLuint name, GLenum target ) |
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54 | { |
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55 | struct gl_texture_object *obj; |
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56 | |||
57 | ASSERT(target == 0 || |
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58 | target == GL_TEXTURE_1D || |
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59 | target == GL_TEXTURE_2D || |
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60 | target == GL_TEXTURE_3D || |
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61 | target == GL_TEXTURE_CUBE_MAP_ARB || |
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62 | target == GL_TEXTURE_RECTANGLE_NV); |
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63 | |||
64 | obj = CALLOC_STRUCT(gl_texture_object); |
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65 | |||
66 | if (obj) { |
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67 | /* init the non-zero fields */ |
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68 | _glthread_INIT_MUTEX(obj->Mutex); |
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69 | obj->RefCount = 1; |
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70 | obj->Name = name; |
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71 | obj->Target = target; |
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72 | obj->Priority = 1.0F; |
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73 | if (target == GL_TEXTURE_RECTANGLE_NV) { |
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74 | obj->WrapS = GL_CLAMP_TO_EDGE; |
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75 | obj->WrapT = GL_CLAMP_TO_EDGE; |
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76 | obj->WrapR = GL_CLAMP_TO_EDGE; |
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77 | obj->MinFilter = GL_LINEAR; |
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78 | } |
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79 | else { |
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80 | obj->WrapS = GL_REPEAT; |
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81 | obj->WrapT = GL_REPEAT; |
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82 | obj->WrapR = GL_REPEAT; |
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83 | obj->MinFilter = GL_NEAREST_MIPMAP_LINEAR; |
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84 | } |
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85 | obj->MagFilter = GL_LINEAR; |
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86 | obj->MinLod = -1000.0; |
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87 | obj->MaxLod = 1000.0; |
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88 | obj->BaseLevel = 0; |
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89 | obj->MaxLevel = 1000; |
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90 | obj->MaxAnisotropy = 1.0; |
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91 | obj->CompareFlag = GL_FALSE; /* SGIX_shadow */ |
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92 | obj->CompareOperator = GL_TEXTURE_LEQUAL_R_SGIX; /* SGIX_shadow */ |
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93 | obj->CompareMode = GL_LUMINANCE; /* ARB_shadow */ |
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94 | obj->CompareFunc = GL_LEQUAL; /* ARB_shadow */ |
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95 | obj->DepthMode = GL_LUMINANCE; /* ARB_depth_texture */ |
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96 | obj->ShadowAmbient = 0.0F; /* ARB/SGIX_shadow_ambient */ |
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97 | _mesa_init_colortable(&obj->Palette); |
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98 | |||
99 | /* insert into linked list */ |
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100 | if (shared) { |
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101 | _glthread_LOCK_MUTEX(shared->Mutex); |
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102 | obj->Next = shared->TexObjectList; |
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103 | shared->TexObjectList = obj; |
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104 | _glthread_UNLOCK_MUTEX(shared->Mutex); |
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105 | } |
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106 | |||
107 | if (name > 0) { |
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108 | /* insert into hash table */ |
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109 | _mesa_HashInsert(shared->TexObjects, name, obj); |
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110 | } |
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111 | } |
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112 | return obj; |
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113 | } |
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114 | |||
115 | |||
116 | /* |
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117 | * Deallocate a texture object struct and remove it from the given |
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118 | * shared GL state. |
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119 | * Input: shared - the shared GL state to which the object belongs |
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120 | * t - the texture object to delete |
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121 | */ |
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122 | void _mesa_free_texture_object( struct gl_shared_state *shared, |
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123 | struct gl_texture_object *t ) |
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124 | { |
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125 | struct gl_texture_object *tprev, *tcurr; |
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126 | |||
127 | assert(t); |
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128 | |||
129 | /* unlink t from the linked list */ |
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130 | if (shared) { |
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131 | _glthread_LOCK_MUTEX(shared->Mutex); |
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132 | tprev = NULL; |
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133 | tcurr = shared->TexObjectList; |
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134 | while (tcurr) { |
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135 | if (tcurr==t) { |
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136 | if (tprev) { |
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137 | tprev->Next = t->Next; |
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138 | } |
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139 | else { |
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140 | shared->TexObjectList = t->Next; |
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141 | } |
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142 | break; |
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143 | } |
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144 | tprev = tcurr; |
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145 | tcurr = tcurr->Next; |
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146 | } |
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147 | _glthread_UNLOCK_MUTEX(shared->Mutex); |
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148 | } |
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149 | |||
150 | if (t->Name) { |
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151 | /* remove from hash table */ |
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152 | _mesa_HashRemove(shared->TexObjects, t->Name); |
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153 | } |
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154 | |||
155 | _mesa_free_colortable_data(&t->Palette); |
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156 | |||
157 | /* free the texture images */ |
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158 | { |
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159 | GLuint i; |
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160 | for (i=0;i<MAX_TEXTURE_LEVELS;i++) { |
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161 | if (t->Image[i]) { |
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162 | _mesa_free_texture_image( t->Image[i] ); |
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163 | } |
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164 | } |
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165 | } |
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166 | |||
167 | /* free this object */ |
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168 | FREE( t ); |
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169 | } |
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170 | |||
171 | |||
172 | /* |
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173 | * Copy texture object state from one texture object to another. |
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174 | */ |
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175 | void |
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176 | _mesa_copy_texture_object( struct gl_texture_object *dest, |
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177 | const struct gl_texture_object *src ) |
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178 | { |
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179 | dest->Name = src->Name; |
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180 | dest->Priority = src->Priority; |
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181 | dest->BorderColor[0] = src->BorderColor[0]; |
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182 | dest->BorderColor[1] = src->BorderColor[1]; |
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183 | dest->BorderColor[2] = src->BorderColor[2]; |
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184 | dest->BorderColor[3] = src->BorderColor[3]; |
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185 | dest->WrapS = src->WrapS; |
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186 | dest->WrapT = src->WrapT; |
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187 | dest->WrapR = src->WrapR; |
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188 | dest->MinFilter = src->MinFilter; |
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189 | dest->MagFilter = src->MagFilter; |
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190 | dest->MinLod = src->MinLod; |
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191 | dest->MaxLod = src->MaxLod; |
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192 | dest->BaseLevel = src->BaseLevel; |
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193 | dest->MaxLevel = src->MaxLevel; |
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194 | dest->MaxAnisotropy = src->MaxAnisotropy; |
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195 | dest->CompareFlag = src->CompareFlag; |
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196 | dest->CompareOperator = src->CompareOperator; |
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197 | dest->ShadowAmbient = src->ShadowAmbient; |
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198 | dest->CompareMode = src->CompareMode; |
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199 | dest->CompareFunc = src->CompareFunc; |
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200 | dest->DepthMode = src->DepthMode; |
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201 | dest->_MaxLevel = src->_MaxLevel; |
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202 | dest->_MaxLambda = src->_MaxLambda; |
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203 | dest->GenerateMipmap = src->GenerateMipmap; |
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204 | dest->Palette = src->Palette; |
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205 | dest->Complete = src->Complete; |
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206 | } |
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207 | |||
208 | |||
209 | /* |
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210 | * Report why a texture object is incomplete. (for debug only) |
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211 | */ |
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212 | #if 0 |
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213 | static void |
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214 | incomplete(const struct gl_texture_object *t, const char *why) |
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215 | { |
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216 | _mesa_printf("Texture Obj %d incomplete because: %s\n", t->Name, why); |
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217 | } |
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218 | #else |
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219 | #define incomplete(a, b) |
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220 | #endif |
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221 | |||
222 | |||
223 | /* |
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224 | * Examine a texture object to determine if it is complete. |
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225 | * The t->Complete flag will be set to GL_TRUE or GL_FALSE accordingly. |
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226 | */ |
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227 | void |
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228 | _mesa_test_texobj_completeness( const GLcontext *ctx, |
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229 | struct gl_texture_object *t ) |
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230 | { |
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231 | const GLint baseLevel = t->BaseLevel; |
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232 | GLint maxLog2 = 0, maxLevels = 0; |
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233 | |||
234 | t->Complete = GL_TRUE; /* be optimistic */ |
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235 | |||
236 | /* Always need the base level image */ |
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237 | if (!t->Image[baseLevel]) { |
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238 | incomplete(t, "Image[baseLevel] == NULL"); |
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239 | t->Complete = GL_FALSE; |
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240 | return; |
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241 | } |
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242 | |||
243 | /* Compute _MaxLevel */ |
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244 | if (t->Target == GL_TEXTURE_1D) { |
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245 | maxLog2 = t->Image[baseLevel]->WidthLog2; |
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246 | maxLevels = ctx->Const.MaxTextureLevels; |
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247 | } |
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248 | else if (t->Target == GL_TEXTURE_2D) { |
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249 | maxLog2 = MAX2(t->Image[baseLevel]->WidthLog2, |
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250 | t->Image[baseLevel]->HeightLog2); |
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251 | maxLevels = ctx->Const.MaxTextureLevels; |
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252 | } |
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253 | else if (t->Target == GL_TEXTURE_3D) { |
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254 | GLint max = MAX2(t->Image[baseLevel]->WidthLog2, |
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255 | t->Image[baseLevel]->HeightLog2); |
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256 | maxLog2 = MAX2(max, (GLint)(t->Image[baseLevel]->DepthLog2)); |
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257 | maxLevels = ctx->Const.Max3DTextureLevels; |
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258 | } |
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259 | else if (t->Target == GL_TEXTURE_CUBE_MAP_ARB) { |
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260 | maxLog2 = MAX2(t->Image[baseLevel]->WidthLog2, |
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261 | t->Image[baseLevel]->HeightLog2); |
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262 | maxLevels = ctx->Const.MaxCubeTextureLevels; |
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263 | } |
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264 | else if (t->Target == GL_TEXTURE_RECTANGLE_NV) { |
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265 | maxLog2 = 0; /* not applicable */ |
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266 | maxLevels = 1; /* no mipmapping */ |
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267 | } |
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268 | else { |
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269 | _mesa_problem(ctx, "Bad t->Target in _mesa_test_texobj_completeness"); |
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270 | return; |
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271 | } |
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272 | |||
273 | ASSERT(maxLevels > 0); |
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274 | |||
275 | t->_MaxLevel = baseLevel + maxLog2; |
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276 | t->_MaxLevel = MIN2(t->_MaxLevel, t->MaxLevel); |
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277 | t->_MaxLevel = MIN2(t->_MaxLevel, maxLevels - 1); |
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278 | |||
279 | /* Compute _MaxLambda = q - b (see the 1.2 spec) used during mipmapping */ |
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280 | t->_MaxLambda = (GLfloat) (t->_MaxLevel - t->BaseLevel); |
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281 | |||
282 | if (t->Target == GL_TEXTURE_CUBE_MAP_ARB) { |
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283 | /* make sure that all six cube map level 0 images are the same size */ |
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284 | const GLuint w = t->Image[baseLevel]->Width2; |
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285 | const GLuint h = t->Image[baseLevel]->Height2; |
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286 | if (!t->NegX[baseLevel] || |
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287 | t->NegX[baseLevel]->Width2 != w || |
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288 | t->NegX[baseLevel]->Height2 != h || |
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289 | !t->PosY[baseLevel] || |
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290 | t->PosY[baseLevel]->Width2 != w || |
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291 | t->PosY[baseLevel]->Height2 != h || |
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292 | !t->NegY[baseLevel] || |
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293 | t->NegY[baseLevel]->Width2 != w || |
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294 | t->NegY[baseLevel]->Height2 != h || |
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295 | !t->PosZ[baseLevel] || |
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296 | t->PosZ[baseLevel]->Width2 != w || |
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297 | t->PosZ[baseLevel]->Height2 != h || |
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298 | !t->NegZ[baseLevel] || |
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299 | t->NegZ[baseLevel]->Width2 != w || |
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300 | t->NegZ[baseLevel]->Height2 != h) { |
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301 | t->Complete = GL_FALSE; |
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302 | incomplete(t, "Non-quare cubemap image"); |
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303 | return; |
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304 | } |
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305 | } |
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306 | |||
307 | if (t->MinFilter != GL_NEAREST && t->MinFilter != GL_LINEAR) { |
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308 | /* |
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309 | * Mipmapping: determine if we have a complete set of mipmaps |
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310 | */ |
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311 | GLint i; |
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312 | GLint minLevel = baseLevel; |
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313 | GLint maxLevel = t->_MaxLevel; |
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314 | |||
315 | if (minLevel > maxLevel) { |
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316 | t->Complete = GL_FALSE; |
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317 | incomplete(t, "minLevel > maxLevel"); |
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318 | return; |
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319 | } |
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320 | |||
321 | /* Test dimension-independent attributes */ |
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322 | for (i = minLevel; i <= maxLevel; i++) { |
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323 | if (t->Image[i]) { |
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324 | if (t->Image[i]->TexFormat != t->Image[baseLevel]->TexFormat) { |
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325 | t->Complete = GL_FALSE; |
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326 | incomplete(t, "Format[i] != Format[baseLevel]"); |
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327 | return; |
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328 | } |
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329 | if (t->Image[i]->Border != t->Image[baseLevel]->Border) { |
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330 | t->Complete = GL_FALSE; |
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331 | incomplete(t, "Border[i] != Border[baseLevel]"); |
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332 | return; |
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333 | } |
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334 | } |
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335 | } |
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336 | |||
337 | /* Test things which depend on number of texture image dimensions */ |
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338 | if (t->Target == GL_TEXTURE_1D) { |
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339 | /* Test 1-D mipmaps */ |
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340 | GLuint width = t->Image[baseLevel]->Width2; |
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341 | for (i = baseLevel + 1; i < maxLevels; i++) { |
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342 | if (width > 1) { |
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343 | width /= 2; |
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344 | } |
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345 | if (i >= minLevel && i <= maxLevel) { |
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346 | if (!t->Image[i]) { |
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347 | t->Complete = GL_FALSE; |
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348 | incomplete(t, "1D Image[i] == NULL"); |
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349 | return; |
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350 | } |
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351 | if (t->Image[i]->Width2 != width ) { |
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352 | t->Complete = GL_FALSE; |
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353 | incomplete(t, "1D Image[i] bad width"); |
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354 | return; |
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355 | } |
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356 | } |
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357 | if (width == 1) { |
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358 | return; /* found smallest needed mipmap, all done! */ |
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359 | } |
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360 | } |
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361 | } |
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362 | else if (t->Target == GL_TEXTURE_2D) { |
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363 | /* Test 2-D mipmaps */ |
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364 | GLuint width = t->Image[baseLevel]->Width2; |
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365 | GLuint height = t->Image[baseLevel]->Height2; |
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366 | for (i = baseLevel + 1; i < maxLevels; i++) { |
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367 | if (width > 1) { |
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368 | width /= 2; |
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369 | } |
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370 | if (height > 1) { |
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371 | height /= 2; |
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372 | } |
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373 | if (i >= minLevel && i <= maxLevel) { |
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374 | if (!t->Image[i]) { |
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375 | t->Complete = GL_FALSE; |
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376 | incomplete(t, "2D Image[i] == NULL"); |
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377 | return; |
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378 | } |
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379 | if (t->Image[i]->Width2 != width) { |
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380 | t->Complete = GL_FALSE; |
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381 | incomplete(t, "2D Image[i] bad width"); |
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382 | return; |
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383 | } |
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384 | if (t->Image[i]->Height2 != height) { |
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385 | t->Complete = GL_FALSE; |
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386 | incomplete(t, "2D Image[i] bad height"); |
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387 | return; |
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388 | } |
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389 | if (width==1 && height==1) { |
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390 | return; /* found smallest needed mipmap, all done! */ |
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391 | } |
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392 | } |
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393 | } |
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394 | } |
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395 | else if (t->Target == GL_TEXTURE_3D) { |
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396 | /* Test 3-D mipmaps */ |
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397 | GLuint width = t->Image[baseLevel]->Width2; |
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398 | GLuint height = t->Image[baseLevel]->Height2; |
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399 | GLuint depth = t->Image[baseLevel]->Depth2; |
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400 | for (i = baseLevel + 1; i < maxLevels; i++) { |
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401 | if (width > 1) { |
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402 | width /= 2; |
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403 | } |
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404 | if (height > 1) { |
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405 | height /= 2; |
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406 | } |
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407 | if (depth > 1) { |
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408 | depth /= 2; |
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409 | } |
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410 | if (i >= minLevel && i <= maxLevel) { |
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411 | if (!t->Image[i]) { |
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412 | incomplete(t, "3D Image[i] == NULL"); |
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413 | t->Complete = GL_FALSE; |
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414 | return; |
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415 | } |
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416 | if (t->Image[i]->Format == GL_DEPTH_COMPONENT) { |
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417 | t->Complete = GL_FALSE; |
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418 | incomplete(t, "GL_DEPTH_COMPONENT only works with 1/2D tex"); |
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419 | return; |
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420 | } |
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421 | if (t->Image[i]->Width2 != width) { |
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422 | t->Complete = GL_FALSE; |
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423 | incomplete(t, "3D Image[i] bad width"); |
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424 | return; |
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425 | } |
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426 | if (t->Image[i]->Height2 != height) { |
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427 | t->Complete = GL_FALSE; |
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428 | incomplete(t, "3D Image[i] bad height"); |
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429 | return; |
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430 | } |
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431 | if (t->Image[i]->Depth2 != depth) { |
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432 | t->Complete = GL_FALSE; |
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433 | incomplete(t, "3D Image[i] bad depth"); |
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434 | return; |
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435 | } |
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436 | } |
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437 | if (width == 1 && height == 1 && depth == 1) { |
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438 | return; /* found smallest needed mipmap, all done! */ |
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439 | } |
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440 | } |
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441 | } |
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442 | else if (t->Target == GL_TEXTURE_CUBE_MAP_ARB) { |
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443 | /* make sure 6 cube faces are consistant */ |
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444 | GLuint width = t->Image[baseLevel]->Width2; |
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445 | GLuint height = t->Image[baseLevel]->Height2; |
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446 | for (i = baseLevel + 1; i < maxLevels; i++) { |
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447 | if (width > 1) { |
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448 | width /= 2; |
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449 | } |
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450 | if (height > 1) { |
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451 | height /= 2; |
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452 | } |
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453 | if (i >= minLevel && i <= maxLevel) { |
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454 | /* Don't support GL_DEPTH_COMPONENT for cube maps */ |
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455 | if (t->Image[i]->Format == GL_DEPTH_COMPONENT) { |
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456 | t->Complete = GL_FALSE; |
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457 | incomplete(t, "GL_DEPTH_COMPONENT only works with 1/2D tex"); |
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458 | return; |
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459 | } |
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460 | /* check that we have images defined */ |
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461 | if (!t->Image[i] || !t->NegX[i] || |
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462 | !t->PosY[i] || !t->NegY[i] || |
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463 | !t->PosZ[i] || !t->NegZ[i]) { |
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464 | t->Complete = GL_FALSE; |
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465 | incomplete(t, "CubeMap Image[i] == NULL"); |
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466 | return; |
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467 | } |
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468 | /* check that all six images have same size */ |
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469 | if (t->NegX[i]->Width2!=width || t->NegX[i]->Height2!=height || |
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470 | t->PosY[i]->Width2!=width || t->PosY[i]->Height2!=height || |
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471 | t->NegY[i]->Width2!=width || t->NegY[i]->Height2!=height || |
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472 | t->PosZ[i]->Width2!=width || t->PosZ[i]->Height2!=height || |
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473 | t->NegZ[i]->Width2!=width || t->NegZ[i]->Height2!=height) { |
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474 | t->Complete = GL_FALSE; |
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475 | incomplete(t, "CubeMap Image[i] bad size"); |
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476 | return; |
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477 | } |
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478 | } |
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479 | if (width == 1 && height == 1) { |
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480 | return; /* found smallest needed mipmap, all done! */ |
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481 | } |
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482 | } |
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483 | } |
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484 | else if (t->Target == GL_TEXTURE_RECTANGLE_NV) { |
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485 | /* XXX special checking? */ |
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486 | |||
487 | } |
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488 | else { |
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489 | /* Target = ??? */ |
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490 | _mesa_problem(ctx, "Bug in gl_test_texture_object_completeness\n"); |
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491 | } |
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492 | } |
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493 | } |
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494 | |||
495 | |||
496 | _glthread_DECLARE_STATIC_MUTEX(GenTexturesLock); |
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497 | |||
498 | |||
499 | /* |
||
500 | * Execute glGenTextures |
||
501 | */ |
||
502 | void |
||
503 | _mesa_GenTextures( GLsizei n, GLuint *texName ) |
||
504 | { |
||
505 | GET_CURRENT_CONTEXT(ctx); |
||
506 | GLuint first; |
||
507 | GLint i; |
||
508 | ASSERT_OUTSIDE_BEGIN_END(ctx); |
||
509 | |||
510 | if (n < 0) { |
||
511 | _mesa_error( ctx, GL_INVALID_VALUE, "glGenTextures" ); |
||
512 | return; |
||
513 | } |
||
514 | |||
515 | if (!texName) |
||
516 | return; |
||
517 | |||
518 | /* |
||
519 | * This must be atomic (generation and allocation of texture IDs) |
||
520 | */ |
||
521 | _glthread_LOCK_MUTEX(GenTexturesLock); |
||
522 | |||
523 | first = _mesa_HashFindFreeKeyBlock(ctx->Shared->TexObjects, n); |
||
524 | |||
525 | /* Return the texture names */ |
||
526 | for (i=0;i<n;i++) { |
||
527 | texName[i] = first + i; |
||
528 | } |
||
529 | |||
530 | /* Allocate new, empty texture objects */ |
||
531 | for (i=0;i<n;i++) { |
||
532 | GLuint name = first + i; |
||
533 | GLenum target = 0; |
||
534 | (void) _mesa_alloc_texture_object( ctx->Shared, name, target); |
||
535 | } |
||
536 | |||
537 | _glthread_UNLOCK_MUTEX(GenTexturesLock); |
||
538 | } |
||
539 | |||
540 | |||
541 | |||
542 | /* |
||
543 | * Execute glDeleteTextures |
||
544 | */ |
||
545 | void |
||
546 | _mesa_DeleteTextures( GLsizei n, const GLuint *texName) |
||
547 | { |
||
548 | GET_CURRENT_CONTEXT(ctx); |
||
549 | GLint i; |
||
550 | ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* too complex */ |
||
551 | |||
552 | if (!texName) |
||
553 | return; |
||
554 | |||
555 | for (i=0;i<n;i++) { |
||
556 | if (texName[i] > 0) { |
||
557 | struct gl_texture_object *delObj = (struct gl_texture_object *) |
||
558 | _mesa_HashLookup(ctx->Shared->TexObjects, texName[i]); |
||
559 | if (delObj) { |
||
560 | /* First check if this texture is currently bound. |
||
561 | * If so, unbind it and decrement the reference count. |
||
562 | */ |
||
563 | GLuint u; |
||
564 | for (u = 0; u < MAX_TEXTURE_UNITS; u++) { |
||
565 | struct gl_texture_unit *unit = &ctx->Texture.Unit[u]; |
||
566 | if (delObj == unit->Current1D) { |
||
567 | unit->Current1D = ctx->Shared->Default1D; |
||
568 | ctx->Shared->Default1D->RefCount++; |
||
569 | delObj->RefCount--; |
||
570 | if (delObj == unit->_Current) |
||
571 | unit->_Current = unit->Current1D; |
||
572 | } |
||
573 | else if (delObj == unit->Current2D) { |
||
574 | unit->Current2D = ctx->Shared->Default2D; |
||
575 | ctx->Shared->Default2D->RefCount++; |
||
576 | delObj->RefCount--; |
||
577 | if (delObj == unit->_Current) |
||
578 | unit->_Current = unit->Current2D; |
||
579 | } |
||
580 | else if (delObj == unit->Current3D) { |
||
581 | unit->Current3D = ctx->Shared->Default3D; |
||
582 | ctx->Shared->Default3D->RefCount++; |
||
583 | delObj->RefCount--; |
||
584 | if (delObj == unit->_Current) |
||
585 | unit->_Current = unit->Current3D; |
||
586 | } |
||
587 | else if (delObj == unit->CurrentCubeMap) { |
||
588 | unit->CurrentCubeMap = ctx->Shared->DefaultCubeMap; |
||
589 | ctx->Shared->DefaultCubeMap->RefCount++; |
||
590 | delObj->RefCount--; |
||
591 | if (delObj == unit->_Current) |
||
592 | unit->_Current = unit->CurrentCubeMap; |
||
593 | } |
||
594 | else if (delObj == unit->CurrentRect) { |
||
595 | unit->CurrentRect = ctx->Shared->DefaultRect; |
||
596 | ctx->Shared->DefaultRect->RefCount++; |
||
597 | delObj->RefCount--; |
||
598 | if (delObj == unit->_Current) |
||
599 | unit->_Current = unit->CurrentRect; |
||
600 | } |
||
601 | } |
||
602 | ctx->NewState |= _NEW_TEXTURE; |
||
603 | |||
604 | /* Decrement reference count and delete if zero */ |
||
605 | delObj->RefCount--; |
||
606 | ASSERT(delObj->RefCount >= 0); |
||
607 | |||
608 | if (delObj->RefCount == 0) { |
||
609 | ASSERT(delObj->Name != 0); |
||
610 | if (ctx->Driver.DeleteTexture) |
||
611 | (*ctx->Driver.DeleteTexture)( ctx, delObj ); |
||
612 | _mesa_free_texture_object(ctx->Shared, delObj); |
||
613 | } |
||
614 | } |
||
615 | } |
||
616 | } |
||
617 | } |
||
618 | |||
619 | |||
620 | |||
621 | /* |
||
622 | * Execute glBindTexture |
||
623 | */ |
||
624 | void |
||
625 | _mesa_BindTexture( GLenum target, GLuint texName ) |
||
626 | { |
||
627 | GET_CURRENT_CONTEXT(ctx); |
||
628 | GLuint unit = ctx->Texture.CurrentUnit; |
||
629 | struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; |
||
630 | struct gl_texture_object *oldTexObj; |
||
631 | struct gl_texture_object *newTexObj = 0; |
||
632 | ASSERT_OUTSIDE_BEGIN_END(ctx); |
||
633 | |||
634 | if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) |
||
635 | _mesa_debug(ctx, "glBindTexture %s %d\n", |
||
636 | _mesa_lookup_enum_by_nr(target), (GLint) texName); |
||
637 | |||
638 | switch (target) { |
||
639 | case GL_TEXTURE_1D: |
||
640 | oldTexObj = texUnit->Current1D; |
||
641 | break; |
||
642 | case GL_TEXTURE_2D: |
||
643 | oldTexObj = texUnit->Current2D; |
||
644 | break; |
||
645 | case GL_TEXTURE_3D: |
||
646 | oldTexObj = texUnit->Current3D; |
||
647 | break; |
||
648 | case GL_TEXTURE_CUBE_MAP_ARB: |
||
649 | if (!ctx->Extensions.ARB_texture_cube_map) { |
||
650 | _mesa_error( ctx, GL_INVALID_ENUM, "glBindTexture(target)" ); |
||
651 | return; |
||
652 | } |
||
653 | oldTexObj = texUnit->CurrentCubeMap; |
||
654 | break; |
||
655 | case GL_TEXTURE_RECTANGLE_NV: |
||
656 | if (!ctx->Extensions.NV_texture_rectangle) { |
||
657 | _mesa_error( ctx, GL_INVALID_ENUM, "glBindTexture(target)" ); |
||
658 | return; |
||
659 | } |
||
660 | oldTexObj = texUnit->CurrentRect; |
||
661 | break; |
||
662 | default: |
||
663 | _mesa_error( ctx, GL_INVALID_ENUM, "glBindTexture(target)" ); |
||
664 | return; |
||
665 | } |
||
666 | |||
667 | if (oldTexObj->Name == texName) |
||
668 | return; /* rebinding the same texture- no change */ |
||
669 | |||
670 | /* |
||
671 | * Get pointer to new texture object (newTexObj) |
||
672 | */ |
||
673 | if (texName == 0) { |
||
674 | /* newTexObj = a default texture object */ |
||
675 | switch (target) { |
||
676 | case GL_TEXTURE_1D: |
||
677 | newTexObj = ctx->Shared->Default1D; |
||
678 | break; |
||
679 | case GL_TEXTURE_2D: |
||
680 | newTexObj = ctx->Shared->Default2D; |
||
681 | break; |
||
682 | case GL_TEXTURE_3D: |
||
683 | newTexObj = ctx->Shared->Default3D; |
||
684 | break; |
||
685 | case GL_TEXTURE_CUBE_MAP_ARB: |
||
686 | newTexObj = ctx->Shared->DefaultCubeMap; |
||
687 | break; |
||
688 | case GL_TEXTURE_RECTANGLE_NV: |
||
689 | newTexObj = ctx->Shared->DefaultRect; |
||
690 | break; |
||
691 | default: |
||
692 | ; /* Bad targets are caught above */ |
||
693 | } |
||
694 | } |
||
695 | else { |
||
696 | /* non-default texture object */ |
||
697 | const struct _mesa_HashTable *hash = ctx->Shared->TexObjects; |
||
698 | newTexObj = (struct gl_texture_object *) _mesa_HashLookup(hash, texName); |
||
699 | if (newTexObj) { |
||
700 | /* error checking */ |
||
701 | if (newTexObj->Target != 0 && newTexObj->Target != target) { |
||
702 | /* the named texture object's dimensions don't match the target */ |
||
703 | _mesa_error( ctx, GL_INVALID_OPERATION, |
||
704 | "glBindTexture(wrong dimensionality)" ); |
||
705 | return; |
||
706 | } |
||
707 | if (newTexObj->Target == 0 && target == GL_TEXTURE_RECTANGLE_NV) { |
||
708 | /* have to init wrap and filter state here - kind of klunky */ |
||
709 | newTexObj->WrapS = GL_CLAMP_TO_EDGE; |
||
710 | newTexObj->WrapT = GL_CLAMP_TO_EDGE; |
||
711 | newTexObj->WrapR = GL_CLAMP_TO_EDGE; |
||
712 | newTexObj->MinFilter = GL_LINEAR; |
||
713 | } |
||
714 | } |
||
715 | else { |
||
716 | /* if this is a new texture id, allocate a texture object now */ |
||
717 | newTexObj = _mesa_alloc_texture_object( ctx->Shared, texName, |
||
718 | target); |
||
719 | if (!newTexObj) { |
||
720 | _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindTexture"); |
||
721 | return; |
||
722 | } |
||
723 | } |
||
724 | newTexObj->Target = target; |
||
725 | } |
||
726 | |||
727 | newTexObj->RefCount++; |
||
728 | |||
729 | /* do the actual binding, but first flush outstanding vertices: |
||
730 | */ |
||
731 | FLUSH_VERTICES(ctx, _NEW_TEXTURE); |
||
732 | |||
733 | switch (target) { |
||
734 | case GL_TEXTURE_1D: |
||
735 | texUnit->Current1D = newTexObj; |
||
736 | break; |
||
737 | case GL_TEXTURE_2D: |
||
738 | texUnit->Current2D = newTexObj; |
||
739 | break; |
||
740 | case GL_TEXTURE_3D: |
||
741 | texUnit->Current3D = newTexObj; |
||
742 | break; |
||
743 | case GL_TEXTURE_CUBE_MAP_ARB: |
||
744 | texUnit->CurrentCubeMap = newTexObj; |
||
745 | break; |
||
746 | case GL_TEXTURE_RECTANGLE_NV: |
||
747 | texUnit->CurrentRect = newTexObj; |
||
748 | break; |
||
749 | default: |
||
750 | _mesa_problem(ctx, "bad target in BindTexture"); |
||
751 | return; |
||
752 | } |
||
753 | |||
754 | /* Pass BindTexture call to device driver */ |
||
755 | if (ctx->Driver.BindTexture) |
||
756 | (*ctx->Driver.BindTexture)( ctx, target, newTexObj ); |
||
757 | |||
758 | oldTexObj->RefCount--; |
||
759 | assert(oldTexObj->RefCount >= 0); |
||
760 | if (oldTexObj->RefCount == 0) { |
||
761 | assert(oldTexObj->Name != 0); |
||
762 | if (ctx->Driver.DeleteTexture) { |
||
763 | (*ctx->Driver.DeleteTexture)( ctx, oldTexObj ); |
||
764 | } |
||
765 | _mesa_free_texture_object(ctx->Shared, oldTexObj); |
||
766 | } |
||
767 | } |
||
768 | |||
769 | |||
770 | |||
771 | /* |
||
772 | * Execute glPrioritizeTextures |
||
773 | */ |
||
774 | void |
||
775 | _mesa_PrioritizeTextures( GLsizei n, const GLuint *texName, |
||
776 | const GLclampf *priorities ) |
||
777 | { |
||
778 | GET_CURRENT_CONTEXT(ctx); |
||
779 | GLint i; |
||
780 | ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); |
||
781 | |||
782 | if (n < 0) { |
||
783 | _mesa_error( ctx, GL_INVALID_VALUE, "glPrioritizeTextures" ); |
||
784 | return; |
||
785 | } |
||
786 | |||
787 | if (!priorities) |
||
788 | return; |
||
789 | |||
790 | for (i = 0; i < n; i++) { |
||
791 | if (texName[i] > 0) { |
||
792 | struct gl_texture_object *t = (struct gl_texture_object *) |
||
793 | _mesa_HashLookup(ctx->Shared->TexObjects, texName[i]); |
||
794 | if (t) { |
||
795 | t->Priority = CLAMP( priorities[i], 0.0F, 1.0F ); |
||
796 | if (ctx->Driver.PrioritizeTexture) |
||
797 | ctx->Driver.PrioritizeTexture( ctx, t, t->Priority ); |
||
798 | } |
||
799 | } |
||
800 | } |
||
801 | |||
802 | ctx->NewState |= _NEW_TEXTURE; |
||
803 | } |
||
804 | |||
805 | |||
806 | |||
807 | /* |
||
808 | * Execute glAreTexturesResident |
||
809 | */ |
||
810 | GLboolean |
||
811 | _mesa_AreTexturesResident(GLsizei n, const GLuint *texName, |
||
812 | GLboolean *residences) |
||
813 | { |
||
814 | GET_CURRENT_CONTEXT(ctx); |
||
815 | GLboolean allResident = GL_TRUE; |
||
816 | GLint i; |
||
817 | ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); |
||
818 | |||
819 | if (n < 0) { |
||
820 | _mesa_error(ctx, GL_INVALID_VALUE, "glAreTexturesResident(n)"); |
||
821 | return GL_FALSE; |
||
822 | } |
||
823 | |||
824 | if (!texName || !residences) |
||
825 | return GL_FALSE; |
||
826 | |||
827 | for (i = 0; i < n; i++) { |
||
828 | struct gl_texture_object *t; |
||
829 | if (texName[i] == 0) { |
||
830 | _mesa_error(ctx, GL_INVALID_VALUE, "glAreTexturesResident(textures)"); |
||
831 | return GL_FALSE; |
||
832 | } |
||
833 | t = (struct gl_texture_object *) |
||
834 | _mesa_HashLookup(ctx->Shared->TexObjects, texName[i]); |
||
835 | if (t) { |
||
836 | if (ctx->Driver.IsTextureResident) { |
||
837 | residences[i] = ctx->Driver.IsTextureResident(ctx, t); |
||
838 | if (!residences[i]) |
||
839 | allResident = GL_FALSE; |
||
840 | } |
||
841 | else { |
||
842 | residences[i] = GL_TRUE; |
||
843 | } |
||
844 | } |
||
845 | else { |
||
846 | _mesa_error(ctx, GL_INVALID_VALUE, "glAreTexturesResident(textures)"); |
||
847 | return GL_FALSE; |
||
848 | } |
||
849 | } |
||
850 | return allResident; |
||
851 | } |
||
852 | |||
853 | |||
854 | |||
855 | /* |
||
856 | * Execute glIsTexture |
||
857 | */ |
||
858 | GLboolean |
||
859 | _mesa_IsTexture( GLuint texture ) |
||
860 | { |
||
861 | GET_CURRENT_CONTEXT(ctx); |
||
862 | ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); |
||
863 | return texture > 0 && _mesa_HashLookup(ctx->Shared->TexObjects, texture); |
||
864 | } |