1 /** 2 * \file texobj.h 3 * Texture object management. 4 */ 5 6 /* 7 * Mesa 3-D graphics library 8 * Version: 6.5 9 * 10 * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. 11 * 12 * Permission is hereby granted, free of charge, to any person obtaining a 13 * copy of this software and associated documentation files (the "Software"), 14 * to deal in the Software without restriction, including without limitation 15 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 16 * and/or sell copies of the Software, and to permit persons to whom the 17 * Software is furnished to do so, subject to the following conditions: 18 * 19 * The above copyright notice and this permission notice shall be included 20 * in all copies or substantial portions of the Software. 21 * 22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 23 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 25 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 26 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 27 * CONNECTION WITH THE SOFTWARE OR THE USE OR 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 /** 42 * \name Internal functions 43 */ 44 /*@{*/ 45 46 extern struct gl_texture_object * 47 _mesa_lookup_texture(struct gl_context *ctx, GLuint id); 48 49 extern struct gl_texture_object * 50 _mesa_new_texture_object( struct gl_context *ctx, GLuint name, GLenum target ); 51 52 extern void 53 _mesa_initialize_texture_object( struct gl_texture_object *obj, 54 GLuint name, GLenum target ); 55 56 extern void 57 _mesa_delete_texture_object( struct gl_context *ctx, 58 struct gl_texture_object *obj ); 59 60 extern void 61 _mesa_copy_texture_object( struct gl_texture_object *dest, 62 const struct gl_texture_object *src ); 63 64 extern void 65 _mesa_clear_texture_object(struct gl_context *ctx, 66 struct gl_texture_object *obj); 67 68 extern void 69 _mesa_reference_texobj_(struct gl_texture_object **ptr, 70 struct gl_texture_object *tex); 71 72 static inline void 73 _mesa_reference_texobj(struct gl_texture_object **ptr, 74 struct gl_texture_object *tex) 75 { 76 if (*ptr != tex) 77 _mesa_reference_texobj_(ptr, tex); 78 } 79 80 81 /** 82 * Return number of faces for a texture target. This will be 6 for 83 * cube maps (and cube map arrays) and 1 otherwise. 84 */ 85 static inline GLuint 86 _mesa_num_tex_faces(GLenum target) 87 { 88 return target == GL_TEXTURE_CUBE_MAP ? 6 : 1; 89 } 90 91 92 /** Is the texture "complete" with respect to the given sampler state? */ 93 static inline GLboolean 94 _mesa_is_texture_complete(const struct gl_texture_object *texObj, 95 const struct gl_sampler_object *sampler) 96 { 97 if (texObj->_IsIntegerFormat && 98 (sampler->MagFilter != GL_NEAREST || 99 (sampler->MinFilter != GL_NEAREST && 100 sampler->MinFilter != GL_NEAREST_MIPMAP_NEAREST))) { 101 /* If the format is integer, only nearest filtering is allowed */ 102 return GL_FALSE; 103 } 104 105 if (_mesa_is_mipmap_filter(sampler)) 106 return texObj->_MipmapComplete; 107 else 108 return texObj->_BaseComplete; 109 } 110 111 112 extern void 113 _mesa_test_texobj_completeness( const struct gl_context *ctx, 114 struct gl_texture_object *obj ); 115 116 extern GLboolean 117 _mesa_cube_complete(const struct gl_texture_object *texObj); 118 119 extern void 120 _mesa_dirty_texobj(struct gl_context *ctx, struct gl_texture_object *texObj, 121 GLboolean invalidate_state); 122 123 extern struct gl_texture_object * 124 _mesa_get_fallback_texture(struct gl_context *ctx, gl_texture_index tex); 125 126 extern GLuint 127 _mesa_total_texture_memory(struct gl_context *ctx); 128 129 extern void 130 _mesa_unlock_context_textures( struct gl_context *ctx ); 131 132 extern void 133 _mesa_lock_context_textures( struct gl_context *ctx ); 134 135 /*@}*/ 136 137 /** 138 * \name API functions 139 */ 140 /*@{*/ 141 142 extern void GLAPIENTRY 143 _mesa_GenTextures( GLsizei n, GLuint *textures ); 144 145 146 extern void GLAPIENTRY 147 _mesa_DeleteTextures( GLsizei n, const GLuint *textures ); 148 149 150 extern void GLAPIENTRY 151 _mesa_BindTexture( GLenum target, GLuint texture ); 152 153 154 extern void GLAPIENTRY 155 _mesa_PrioritizeTextures( GLsizei n, const GLuint *textures, 156 const GLclampf *priorities ); 157 158 159 extern GLboolean GLAPIENTRY 160 _mesa_AreTexturesResident( GLsizei n, const GLuint *textures, 161 GLboolean *residences ); 162 163 extern GLboolean GLAPIENTRY 164 _mesa_IsTexture( GLuint texture ); 165 166 extern void GLAPIENTRY 167 _mesa_InvalidateTexSubImage(GLuint texture, GLint level, GLint xoffset, 168 GLint yoffset, GLint zoffset, GLsizei width, 169 GLsizei height, GLsizei depth); 170 171 extern void GLAPIENTRY 172 _mesa_InvalidateTexImage(GLuint texture, GLint level); 173 174 /*@}*/ 175 176 177 #endif 178
