src/mesa/main/objectlabel.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 2013  Timothy Arceri   All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 #include "arrayobj.h"
  27 #include "bufferobj.h"
  28 #include "context.h"
  29 #include "dlist.h"
  30 #include "enums.h"
  31 #include "fbobject.h"
  32 #include "objectlabel.h"
  33 #include "queryobj.h"
  34 #include "samplerobj.h"
  35 #include "shaderobj.h"
  36 #include "syncobj.h"
  37 #include "texobj.h"
  38 #include "transformfeedback.h"
  39
  40
  41 /**
  42  * Helper for _mesa_ObjectLabel() and _mesa_ObjectPtrLabel().
  43  */
  44 static void
  45 set_label(struct gl_context *ctx, char **labelPtr, const char *label,
  46           int length, const char *caller)
  47 {
  48    if (*labelPtr) {
  49       /* free old label string */
  50       free(*labelPtr);
  51       *labelPtr = NULL;
  52    }
  53
  54    /* set new label string */
  55    if (label) {
  56       if (length >= 0) {
  57          if (length >= MAX_LABEL_LENGTH)
  58             _mesa_error(ctx, GL_INVALID_VALUE,
  59                         "%s(length=%d, which is not less than "
  60                         "GL_MAX_LABEL_LENGTH=%d)", caller, length,
  61                         MAX_LABEL_LENGTH);
  62
  63          /* explicit length */
  64          *labelPtr = (char *) malloc(length+1);
  65          if (*labelPtr) {
  66             memcpy(*labelPtr, label, length);
  67             /* length is not required to include the null terminator so
  68              * add one just in case
  69              */
  70             (*labelPtr)[length] = '\0';
  71          }
  72       }
  73       else {
  74          int len = strlen(label);
  75          if (len >= MAX_LABEL_LENGTH)
  76             _mesa_error(ctx, GL_INVALID_VALUE,
  77                 "%s(label length=%d, which is not less than "
  78                 "GL_MAX_LABEL_LENGTH=%d)", caller, len,
  79                 MAX_LABEL_LENGTH);
  80
  81          /* null-terminated string */
  82          *labelPtr = _mesa_strdup(label);
  83       }
  84    }
  85 }
  86
  87 /**
  88  * Helper for _mesa_GetObjectLabel() and _mesa_GetObjectPtrLabel().
  89  * \param src  the src label (may be null)
  90  * \param dst  pointer to dest buffer (may be null)
  91  * \param length  returns length of label (may be null)
  92  * \param bufsize  size of dst buffer
  93  */
  94 static void
  95 copy_label(const GLchar *src, GLchar *dst, GLsizei *length, GLsizei bufSize)
  96 {
  97    int labelLen = 0;
  98
  99    /* From http://www.opengl.org/registry/specs/KHR/debug.txt:
 100     * "If <length> is NULL, no length is returned. The maximum number of
 101     * characters that may be written into <label>, including the null
 102     * terminator, is specified by <bufSize>. If no debug label was specified
 103     * for the object then <label> will contain a null-terminated empty string,
 104     * and zero will be returned in <length>. If <label> is NULL and <length>
 105     * is non-NULL then no string will be returned and the length of the label
 106     * will be returned in <length>."
 107     */
 108
 109    if (src)
 110       labelLen = strlen(src);
 111
 112    if (dst) {
 113       if (src) {
 114          if (bufSize <= labelLen)
 115             labelLen = bufSize - 1;
 116
 117          memcpy(dst, src, labelLen);
 118       }
 119
 120       dst[labelLen] = '\0';
 121    }
 122
 123    if (length)
 124       *length = labelLen;
 125 }
 126
 127 /**
 128  * Helper for _mesa_ObjectLabel() and _mesa_GetObjectLabel().
 129  */
 130 static char **
 131 get_label_pointer(struct gl_context *ctx, GLenum identifier, GLuint name,
 132                   const char *caller)
 133 {
 134    char **labelPtr = NULL;
 135
 136    switch (identifier) {
 137    case GL_BUFFER:
 138       {
 139          struct gl_buffer_object *bufObj = _mesa_lookup_bufferobj(ctx, name);
 140          if (bufObj)
 141             labelPtr = &bufObj->Label;
 142       }
 143       break;
 144    case GL_SHADER:
 145       {
 146          struct gl_shader *shader = _mesa_lookup_shader(ctx, name);
 147          if (shader)
 148             labelPtr = &shader->Label;
 149       }
 150       break;
 151    case GL_PROGRAM:
 152       {
 153          struct gl_shader_program *program =
 154             _mesa_lookup_shader_program(ctx, name);
 155          if (program)
 156             labelPtr = &program->Label;
 157       }
 158       break;
 159    case GL_VERTEX_ARRAY:
 160       {
 161          struct gl_vertex_array_object *obj = _mesa_lookup_vao(ctx, name);
 162          if (obj)
 163             labelPtr = &obj->Label;
 164       }
 165       break;
 166    case GL_QUERY:
 167       {
 168          struct gl_query_object *query = _mesa_lookup_query_object(ctx, name);
 169          if (query)
 170             labelPtr = &query->Label;
 171       }
 172       break;
 173    case GL_TRANSFORM_FEEDBACK:
 174       {
 175          struct gl_transform_feedback_object *tfo =
 176             _mesa_lookup_transform_feedback_object(ctx, name);
 177          if (tfo)
 178             labelPtr = &tfo->Label;
 179       }
 180       break;
 181    case GL_SAMPLER:
 182       {
 183          struct gl_sampler_object *so = _mesa_lookup_samplerobj(ctx, name);
 184          if (so)
 185             labelPtr = &so->Label;
 186       }
 187       break;
 188    case GL_TEXTURE:
 189       {
 190          struct gl_texture_object *texObj = _mesa_lookup_texture(ctx, name);
 191          if (texObj)
 192             labelPtr = &texObj->Label;
 193       }
 194       break;
 195    case GL_RENDERBUFFER:
 196       {
 197          struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, name);
 198          if (rb)
 199             labelPtr = &rb->Label;
 200       }
 201       break;
 202    case GL_FRAMEBUFFER:
 203       {
 204          struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, name);
 205          if (rb)
 206             labelPtr = &rb->Label;
 207       }
 208       break;
 209    case GL_DISPLAY_LIST:
 210       if (ctx->API == API_OPENGL_COMPAT) {
 211          struct gl_display_list *list = _mesa_lookup_list(ctx, name);
 212          if (list)
 213             labelPtr = &list->Label;
 214       }
 215       else {
 216          goto invalid_enum;
 217       }
 218       break;
 219    case GL_PROGRAM_PIPELINE:
 220       /* requires GL 4.2 */
 221       goto invalid_enum;
 222    default:
 223       goto invalid_enum;
 224    }
 225
 226    if (NULL == labelPtr) {
 227       _mesa_error(ctx, GL_INVALID_VALUE, "%s(name = %u)", caller, name);
 228    }
 229
 230    return labelPtr;
 231
 232 invalid_enum:
 233    _mesa_error(ctx, GL_INVALID_ENUM, "%s(identifier = %s)",
 234                caller, _mesa_lookup_enum_by_nr(identifier));
 235    return NULL;
 236 }
 237
 238 void GLAPIENTRY
 239 _mesa_ObjectLabel(GLenum identifier, GLuint name, GLsizei length,
 240                   const GLchar *label)
 241 {
 242    GET_CURRENT_CONTEXT(ctx);
 243    char **labelPtr;
 244
 245    labelPtr = get_label_pointer(ctx, identifier, name, "glObjectLabel");
 246    if (!labelPtr)
 247       return;
 248
 249    set_label(ctx, labelPtr, label, length, "glObjectLabel");
 250 }
 251
 252 void GLAPIENTRY
 253 _mesa_GetObjectLabel(GLenum identifier, GLuint name, GLsizei bufSize,
 254                      GLsizei *length, GLchar *label)
 255 {
 256    GET_CURRENT_CONTEXT(ctx);
 257    char **labelPtr;
 258
 259    if (bufSize < 0) {
 260       _mesa_error(ctx, GL_INVALID_VALUE, "glGetObjectLabel(bufSize = %d)",
 261                   bufSize);
 262       return;
 263    }
 264
 265    labelPtr = get_label_pointer(ctx, identifier, name, "glGetObjectLabel");
 266    if (!labelPtr)
 267       return;
 268
 269    copy_label(*labelPtr, label, length, bufSize);
 270 }
 271
 272 void GLAPIENTRY
 273 _mesa_ObjectPtrLabel(const void *ptr, GLsizei length, const GLchar *label)
 274 {
 275    GET_CURRENT_CONTEXT(ctx);
 276    char **labelPtr;
 277    struct gl_sync_object *const syncObj = (struct gl_sync_object *) ptr;
 278
 279    if (!_mesa_validate_sync(ctx, syncObj)) {
 280       _mesa_error(ctx, GL_INVALID_VALUE, "glObjectPtrLabel (not a valid sync object)");
 281       return;
 282    }
 283
 284    labelPtr = &syncObj->Label;
 285
 286    set_label(ctx, labelPtr, label, length, "glObjectPtrLabel");
 287 }
 288
 289 void GLAPIENTRY
 290 _mesa_GetObjectPtrLabel(const void *ptr, GLsizei bufSize, GLsizei *length,
 291                         GLchar *label)
 292 {
 293    GET_CURRENT_CONTEXT(ctx);
 294    char **labelPtr;
 295    struct gl_sync_object *const syncObj = (struct gl_sync_object *) ptr;
 296
 297    if (bufSize < 0) {
 298       _mesa_error(ctx, GL_INVALID_VALUE, "glGetObjectPtrLabel(bufSize = %d)",
 299                   bufSize);
 300       return;
 301    }
 302
 303    if (!_mesa_validate_sync(ctx, syncObj)) {
 304       _mesa_error(ctx, GL_INVALID_VALUE, "glGetObjectPtrLabel (not a valid sync object)");
 305       return;
 306    }
 307
 308    labelPtr = &syncObj->Label;
 309
 310    copy_label(*labelPtr, label, length, bufSize);
 311 }