1 /** 2 * \file texobj.h 3 * Texture object management. 4 */ 5 6 /* 7 * Mesa 3-D graphics library 8 * 9 * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. 10 * 11 * Permission is hereby granted, free of charge, to any person obtaining a 12 * copy of this software and associated documentation files (the "Software"), 13 * to deal in the Software without restriction, including without limitation 14 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 15 * and/or sell copies of the Software, and to permit persons to whom the 16 * Software is furnished to do so, subject to the following conditions: 17 * 18 * The above copyright notice and this permission notice shall be included 19 * in all copies or substantial portions of the Software. 20 * 21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 22 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 24 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 25 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 26 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 27 * OTHER DEALINGS IN THE SOFTWARE. 28 */ 29 30 31 #ifndef TEXTOBJ_H 32 #define TEXTOBJ_H 33 34 35 #include "compiler.h" 36 #include "glheader.h" 37 #include "mtypes.h" 38 #include "samplerobj.h" 39 40 41 #ifdef __cplusplus 42 extern "C" { 43 #endif 44 45 46 /** 47 * \name Internal functions 48 */ 49 /*@{*/ 50 51 extern struct gl_texture_object * 52 _mesa_lookup_texture(struct gl_context *ctx, GLuint id); 53 54 extern struct gl_texture_object * 55 _mesa_lookup_texture_err(struct gl_context *ctx, GLuint id, const char* func); 56 57 extern void 58 _mesa_begin_texture_lookups(struct gl_context *ctx); 59 60 extern void 61 _mesa_end_texture_lookups(struct gl_context *ctx); 62 63 extern struct gl_texture_object * 64 _mesa_lookup_texture_locked(struct gl_context *ctx, GLuint id); 65 66 extern struct gl_texture_object * 67 _mesa_get_current_tex_object(struct gl_context *ctx, GLenum target); 68 69 extern struct gl_texture_object * 70 _mesa_new_texture_object( struct gl_context *ctx, GLuint name, GLenum target ); 71 72 extern void 73 _mesa_initialize_texture_object( struct gl_context *ctx, 74 struct gl_texture_object *obj, 75 GLuint name, GLenum target ); 76 77 extern int 78 _mesa_tex_target_to_index(const struct gl_context *ctx, GLenum target); 79 80 extern void 81 _mesa_delete_texture_object( struct gl_context *ctx, 82 struct gl_texture_object *obj ); 83 84 extern void 85 _mesa_copy_texture_object( struct gl_texture_object *dest, 86 const struct gl_texture_object *src ); 87 88 extern void 89 _mesa_clear_texture_object(struct gl_context *ctx, 90 struct gl_texture_object *obj); 91 92 extern void 93 _mesa_reference_texobj_(struct gl_texture_object **ptr, 94 struct gl_texture_object *tex); 95 96 static inline void 97 _mesa_reference_texobj(struct gl_texture_object **ptr, 98 struct gl_texture_object *tex) 99 { 100 if (*ptr != tex) 101 _mesa_reference_texobj_(ptr, tex); 102 } 103 104 /** 105 * Lock a texture for updating. See also _mesa_lock_context_textures(). 106 */ 107 static inline void 108 _mesa_lock_texture(struct gl_context *ctx, struct gl_texture_object *texObj) 109 { 110 mtx_lock(&ctx->Shared->TexMutex); 111 ctx->Shared->TextureStateStamp++; 112 (void) texObj; 113 } 114 115 static inline void 116 _mesa_unlock_texture(struct gl_context *ctx, struct gl_texture_object *texObj) 117 { 118 (void) texObj; 119 mtx_unlock(&ctx->Shared->TexMutex); 120 } 121 122 123 /** Is the texture "complete" with respect to the given sampler state? */ 124 static inline GLboolean 125 _mesa_is_texture_complete(const struct gl_texture_object *texObj, 126 const struct gl_sampler_object *sampler) 127 { 128 /* 129 * According to ARB_stencil_texturing, NEAREST_MIPMAP_NEAREST would 130 * be forbidden, however it is allowed per GL 4.5 rules, allow it 131 * even without GL 4.5 since it was a spec mistake. 132 */ 133 if ((texObj->_IsIntegerFormat || 134 (texObj->StencilSampling && 135 texObj->Image[0][texObj->BaseLevel]->_BaseFormat == GL_DEPTH_STENCIL)) && 136 (sampler->MagFilter != GL_NEAREST || 137 (sampler->MinFilter != GL_NEAREST && 138 sampler->MinFilter != GL_NEAREST_MIPMAP_NEAREST))) { 139 /* If the format is integer, only nearest filtering is allowed */ 140 return GL_FALSE; 141 } 142 143 if (_mesa_is_mipmap_filter(sampler)) 144 return texObj->_MipmapComplete; 145 else 146 return texObj->_BaseComplete; 147 } 148 149 150 extern void 151 _mesa_test_texobj_completeness( const struct gl_context *ctx, 152 struct gl_texture_object *obj ); 153 154 extern GLboolean 155 _mesa_cube_level_complete(const struct gl_texture_object *texObj, 156 const GLint level); 157 158 extern GLboolean 159 _mesa_cube_complete(const struct gl_texture_object *texObj); 160 161 extern void 162 _mesa_dirty_texobj(struct gl_context *ctx, struct gl_texture_object *texObj); 163 164 extern struct gl_texture_object * 165 _mesa_get_fallback_texture(struct gl_context *ctx, gl_texture_index tex); 166 167 extern GLuint 168 _mesa_total_texture_memory(struct gl_context *ctx); 169 170 extern GLenum 171 _mesa_texture_base_format(const struct gl_texture_object *texObj); 172 173 extern void 174 _mesa_unlock_context_textures( struct gl_context *ctx ); 175 176 extern void 177 _mesa_lock_context_textures( struct gl_context *ctx ); 178 179 extern void 180 _mesa_delete_nameless_texture(struct gl_context *ctx, 181 struct gl_texture_object *texObj); 182 183 184 /*@}*/ 185 186 /** 187 * \name API functions 188 */ 189 /*@{*/ 190 191 extern void GLAPIENTRY 192 _mesa_GenTextures(GLsizei n, GLuint *textures); 193 194 extern void GLAPIENTRY 195 _mesa_CreateTextures(GLenum target, GLsizei n, GLuint *textures); 196 197 extern void GLAPIENTRY 198 _mesa_DeleteTextures( GLsizei n, const GLuint *textures ); 199 200 201 extern void GLAPIENTRY 202 _mesa_BindTexture( GLenum target, GLuint texture ); 203 204 extern void GLAPIENTRY 205 _mesa_BindTextureUnit(GLuint unit, GLuint texture); 206 207 extern void GLAPIENTRY 208 _mesa_BindTextures( GLuint first, GLsizei count, const GLuint *textures ); 209 210 211 extern void GLAPIENTRY 212 _mesa_PrioritizeTextures( GLsizei n, const GLuint *textures, 213 const GLclampf *priorities ); 214 215 216 extern GLboolean GLAPIENTRY 217 _mesa_AreTexturesResident( GLsizei n, const GLuint *textures, 218 GLboolean *residences ); 219 220 extern GLboolean GLAPIENTRY 221 _mesa_IsTexture( GLuint texture ); 222 223 extern void GLAPIENTRY 224 _mesa_InvalidateTexSubImage(GLuint texture, GLint level, GLint xoffset, 225 GLint yoffset, GLint zoffset, GLsizei width, 226 GLsizei height, GLsizei depth); 227 228 extern void GLAPIENTRY 229 _mesa_InvalidateTexImage(GLuint texture, GLint level); 230 231 /*@}*/ 232 233 234 #ifdef __cplusplus 235 } 236 #endif 237 238 239 #endif 240
