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 "pipelineobj.h"
  34 #include "queryobj.h"
  35 #include "samplerobj.h"
  36 #include "shaderobj.h"
  37 #include "syncobj.h"
  38 #include "texobj.h"
  39 #include "transformfeedback.h"
  40
  41
  42 /**
  43  * Helper for _mesa_ObjectLabel() and _mesa_ObjectPtrLabel().
  44  */
  45 static void
  46 set_label(struct gl_context *ctx, char **labelPtr, const char *label,
  47           int length, const char *caller)
  48 {
  49    free(*labelPtr);
  50    *labelPtr = NULL;
  51
  52    /* set new label string */
  53    if (label) {
  54       if (length >= 0) {
  55          if (length >= MAX_LABEL_LENGTH)
  56             _mesa_error(ctx, GL_INVALID_VALUE,
  57                         "%s(length=%d, which is not less than "
  58                         "GL_MAX_LABEL_LENGTH=%d)", caller, length,
  59                         MAX_LABEL_LENGTH);
  60
  61          /* explicit length */
  62          *labelPtr = malloc(length+1);
  63          if (*labelPtr) {
  64             memcpy(*labelPtr, label, length);
  65             /* length is not required to include the null terminator so
  66              * add one just in case
  67              */
  68             (*labelPtr)[length] = '\0';
  69          }
  70       }
  71       else {
  72          int len = strlen(label);
  73          if (len >= MAX_LABEL_LENGTH)
  74             _mesa_error(ctx, GL_INVALID_VALUE,
  75                 "%s(label length=%d, which is not less than "
  76                 "GL_MAX_LABEL_LENGTH=%d)", caller, len,
  77                 MAX_LABEL_LENGTH);
  78
  79          /* null-terminated string */
  80          *labelPtr = strdup(label);
  81       }
  82    }
  83 }
  84
  85 /**
  86  * Helper for _mesa_GetObjectLabel() and _mesa_GetObjectPtrLabel().
  87  * \param src  the src label (may be null)
  88  * \param dst  pointer to dest buffer (may be null)
  89  * \param length  returns length of label (may be null)
  90  * \param bufsize  size of dst buffer
  91  */
  92 static void
  93 copy_label(const GLchar *src, GLchar *dst, GLsizei *length, GLsizei bufSize)
  94 {
  95    int labelLen = 0;
  96
  97    /* From http://www.opengl.org/registry/specs/KHR/debug.txt:
  98     * "If <length> is NULL, no length is returned. The maximum number of
  99     * characters that may be written into <label>, including the null
 100     * terminator, is specified by <bufSize>. If no debug label was specified
 101     * for the object then <label> will contain a null-terminated empty string,
 102     * and zero will be returned in <length>. If <label> is NULL and <length>
 103     * is non-NULL then no string will be returned and the length of the label
 104     * will be returned in <length>."
 105     */
 106
 107    if (bufSize == 0) {
 108       if (length)
 109          *length = strlen(src);
 110       return;
 111    }
 112    if (src)
 113       labelLen = strlen(src);
 114
 115    if (dst) {
 116       if (src) {
 117          if (bufSize <= labelLen)
 118             labelLen = bufSize - 1;
 119
 120          memcpy(dst, src, labelLen);
 121       }
 122
 123       dst[labelLen] = '\0';
 124    }
 125
 126    if (length)
 127       *length = labelLen;
 128 }
 129
 130 /**
 131  * Helper for _mesa_ObjectLabel() and _mesa_GetObjectLabel().
 132  */
 133 static char **
 134 get_label_pointer(struct gl_context *ctx, GLenum identifier, GLuint name,
 135                   const char *caller)
 136 {
 137    char **labelPtr = NULL;
 138
 139    switch (identifier) {
 140    case GL_BUFFER:
 141       {
 142          struct gl_buffer_object *bufObj = _mesa_lookup_bufferobj(ctx, name);
 143          if (bufObj)
 144             labelPtr = &bufObj->Label;
 145       }
 146       break;
 147    case GL_SHADER:
 148       {
 149          struct gl_shader *shader = _mesa_lookup_shader(ctx, name);
 150          if (shader)
 151             labelPtr = &shader->Label;
 152       }
 153       break;
 154    case GL_PROGRAM:
 155       {
 156          struct gl_shader_program *program =
 157             _mesa_lookup_shader_program(ctx, name);
 158          if (program)
 159             labelPtr = &program->Label;
 160       }
 161       break;
 162    case GL_VERTEX_ARRAY:
 163       {
 164          struct gl_vertex_array_object *obj = _mesa_lookup_vao(ctx, name);
 165          if (obj)
 166             labelPtr = &obj->Label;
 167       }
 168       break;
 169    case GL_QUERY:
 170       {
 171          struct gl_query_object *query = _mesa_lookup_query_object(ctx, name);
 172          if (query)
 173             labelPtr = &query->Label;
 174       }
 175       break;
 176    case GL_TRANSFORM_FEEDBACK:
 177       {
 178          struct gl_transform_feedback_object *tfo =
 179             _mesa_lookup_transform_feedback_object(ctx, name);
 180          if (tfo)
 181             labelPtr = &tfo->Label;
 182       }
 183       break;
 184    case GL_SAMPLER:
 185       {
 186          struct gl_sampler_object *so = _mesa_lookup_samplerobj(ctx, name);
 187          if (so)
 188             labelPtr = &so->Label;
 189       }
 190       break;
 191    case GL_TEXTURE:
 192       {
 193          struct gl_texture_object *texObj = _mesa_lookup_texture(ctx, name);
 194          if (texObj)
 195             labelPtr = &texObj->Label;
 196       }
 197       break;
 198    case GL_RENDERBUFFER:
 199       {
 200          struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, name);
 201          if (rb)
 202             labelPtr = &rb->Label;
 203       }
 204       break;
 205    case GL_FRAMEBUFFER:
 206       {
 207          struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, name);
 208          if (rb)
 209             labelPtr = &rb->Label;
 210       }
 211       break;
 212    case GL_DISPLAY_LIST:
 213       if (ctx->API == API_OPENGL_COMPAT) {
 214          struct gl_display_list *list = _mesa_lookup_list(ctx, name);
 215          if (list)
 216             labelPtr = &list->Label;
 217       }
 218       else {
 219          goto invalid_enum;
 220       }
 221       break;
 222    case GL_PROGRAM_PIPELINE:
 223       {
 224          struct gl_pipeline_object *pipe =
 225             _mesa_lookup_pipeline_object(ctx, name);
 226          if (pipe)
 227             labelPtr = &pipe->Label;
 228       }
 229       break;
 230    default:
 231       goto invalid_enum;
 232    }
 233
 234    if (NULL == labelPtr) {
 235       _mesa_error(ctx, GL_INVALID_VALUE, "%s(name = %u)", caller, name);
 236    }
 237
 238    return labelPtr;
 239
 240 invalid_enum:
 241    _mesa_error(ctx, GL_INVALID_ENUM, "%s(identifier = %s)",
 242                caller, _mesa_enum_to_string(identifier));
 243    return NULL;
 244 }
 245
 246 void GLAPIENTRY
 247 _mesa_ObjectLabel(GLenum identifier, GLuint name, GLsizei length,
 248                   const GLchar *label)
 249 {
 250    GET_CURRENT_CONTEXT(ctx);
 251    const char *callerstr;
 252    char **labelPtr;
 253
 254    if (_mesa_is_desktop_gl(ctx))
 255       callerstr = "glObjectLabel";
 256    else
 257       callerstr = "glObjectLabelKHR";
 258
 259    labelPtr = get_label_pointer(ctx, identifier, name, callerstr);
 260    if (!labelPtr)
 261       return;
 262
 263    set_label(ctx, labelPtr, label, length, callerstr);
 264 }
 265
 266 void GLAPIENTRY
 267 _mesa_GetObjectLabel(GLenum identifier, GLuint name, GLsizei bufSize,
 268                      GLsizei *length, GLchar *label)
 269 {
 270    GET_CURRENT_CONTEXT(ctx);
 271    const char *callerstr;
 272    char **labelPtr;
 273
 274    if (_mesa_is_desktop_gl(ctx))
 275       callerstr = "glGetObjectLabel";
 276    else
 277       callerstr = "glGetObjectLabelKHR";
 278
 279    if (bufSize < 0) {
 280       _mesa_error(ctx, GL_INVALID_VALUE, "%s(bufSize = %d)", callerstr,
 281                   bufSize);
 282       return;
 283    }
 284
 285    labelPtr = get_label_pointer(ctx, identifier, name, callerstr);
 286    if (!labelPtr)
 287       return;
 288
 289    copy_label(*labelPtr, label, length, bufSize);
 290 }
 291
 292 void GLAPIENTRY
 293 _mesa_ObjectPtrLabel(const void *ptr, GLsizei length, const GLchar *label)
 294 {
 295    GET_CURRENT_CONTEXT(ctx);
 296    struct gl_sync_object *syncObj;
 297    const char *callerstr;
 298    char **labelPtr;
 299
 300    syncObj = _mesa_get_and_ref_sync(ctx, (void*)ptr, true);
 301
 302    if (_mesa_is_desktop_gl(ctx))
 303       callerstr = "glObjectPtrLabel";
 304    else
 305       callerstr = "glObjectPtrLabelKHR";
 306
 307    if (!syncObj) {
 308       _mesa_error(ctx, GL_INVALID_VALUE, "%s (not a valid sync object)",
 309                   callerstr);
 310       return;
 311    }
 312
 313    labelPtr = &syncObj->Label;
 314
 315    set_label(ctx, labelPtr, label, length, callerstr);
 316    _mesa_unref_sync_object(ctx, syncObj, 1);
 317 }
 318
 319 void GLAPIENTRY
 320 _mesa_GetObjectPtrLabel(const void *ptr, GLsizei bufSize, GLsizei *length,
 321                         GLchar *label)
 322 {
 323    GET_CURRENT_CONTEXT(ctx);
 324    struct gl_sync_object *syncObj;
 325    const char *callerstr;
 326    char **labelPtr;
 327
 328    if (_mesa_is_desktop_gl(ctx))
 329       callerstr = "glGetObjectPtrLabel";
 330    else
 331       callerstr = "glGetObjectPtrLabelKHR";
 332
 333    if (bufSize < 0) {
 334       _mesa_error(ctx, GL_INVALID_VALUE, "%s(bufSize = %d)", callerstr,
 335                   bufSize);
 336       return;
 337    }
 338
 339    syncObj = _mesa_get_and_ref_sync(ctx, (void*)ptr, true);
 340    if (!syncObj) {
 341       _mesa_error(ctx, GL_INVALID_VALUE, "%s (not a valid sync object)",
 342                   callerstr);
 343       return;
 344    }
 345
 346    labelPtr = &syncObj->Label;
 347
 348    copy_label(*labelPtr, label, length, bufSize);
 349    _mesa_unref_sync_object(ctx, syncObj, 1);
 350 }