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 (src)
 108       labelLen = strlen(src);
 109
 110    if (bufSize == 0) {
 111       if (length)
 112          *length = labelLen;
 113       return;
 114    }
 115
 116    if (dst) {
 117       if (src) {
 118          if (bufSize <= labelLen)
 119             labelLen = bufSize - 1;
 120
 121          memcpy(dst, src, labelLen);
 122       }
 123
 124       dst[labelLen] = '\0';
 125    }
 126
 127    if (length)
 128       *length = labelLen;
 129 }
 130
 131 /**
 132  * Helper for _mesa_ObjectLabel() and _mesa_GetObjectLabel().
 133  */
 134 static char **
 135 get_label_pointer(struct gl_context *ctx, GLenum identifier, GLuint name,
 136                   const char *caller)
 137 {
 138    char **labelPtr = NULL;
 139
 140    switch (identifier) {
 141    case GL_BUFFER:
 142       {
 143          struct gl_buffer_object *bufObj = _mesa_lookup_bufferobj(ctx, name);
 144          if (bufObj)
 145             labelPtr = &bufObj->Label;
 146       }
 147       break;
 148    case GL_SHADER:
 149       {
 150          struct gl_shader *shader = _mesa_lookup_shader(ctx, name);
 151          if (shader)
 152             labelPtr = &shader->Label;
 153       }
 154       break;
 155    case GL_PROGRAM:
 156       {
 157          struct gl_shader_program *program =
 158             _mesa_lookup_shader_program(ctx, name);
 159          if (program)
 160             labelPtr = &program->Label;
 161       }
 162       break;
 163    case GL_VERTEX_ARRAY:
 164       {
 165          struct gl_vertex_array_object *obj = _mesa_lookup_vao(ctx, name);
 166          if (obj)
 167             labelPtr = &obj->Label;
 168       }
 169       break;
 170    case GL_QUERY:
 171       {
 172          struct gl_query_object *query = _mesa_lookup_query_object(ctx, name);
 173          if (query)
 174             labelPtr = &query->Label;
 175       }
 176       break;
 177    case GL_TRANSFORM_FEEDBACK:
 178       {
 179          struct gl_transform_feedback_object *tfo =
 180             _mesa_lookup_transform_feedback_object(ctx, name);
 181          if (tfo)
 182             labelPtr = &tfo->Label;
 183       }
 184       break;
 185    case GL_SAMPLER:
 186       {
 187          struct gl_sampler_object *so = _mesa_lookup_samplerobj(ctx, name);
 188          if (so)
 189             labelPtr = &so->Label;
 190       }
 191       break;
 192    case GL_TEXTURE:
 193       {
 194          struct gl_texture_object *texObj = _mesa_lookup_texture(ctx, name);
 195          if (texObj)
 196             labelPtr = &texObj->Label;
 197       }
 198       break;
 199    case GL_RENDERBUFFER:
 200       {
 201          struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, name);
 202          if (rb)
 203             labelPtr = &rb->Label;
 204       }
 205       break;
 206    case GL_FRAMEBUFFER:
 207       {
 208          struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, name);
 209          if (rb)
 210             labelPtr = &rb->Label;
 211       }
 212       break;
 213    case GL_DISPLAY_LIST:
 214       if (ctx->API == API_OPENGL_COMPAT) {
 215          struct gl_display_list *list = _mesa_lookup_list(ctx, name);
 216          if (list)
 217             labelPtr = &list->Label;
 218       }
 219       else {
 220          goto invalid_enum;
 221       }
 222       break;
 223    case GL_PROGRAM_PIPELINE:
 224       {
 225          struct gl_pipeline_object *pipe =
 226             _mesa_lookup_pipeline_object(ctx, name);
 227          if (pipe)
 228             labelPtr = &pipe->Label;
 229       }
 230       break;
 231    default:
 232       goto invalid_enum;
 233    }
 234
 235    if (NULL == labelPtr) {
 236       _mesa_error(ctx, GL_INVALID_VALUE, "%s(name = %u)", caller, name);
 237    }
 238
 239    return labelPtr;
 240
 241 invalid_enum:
 242    _mesa_error(ctx, GL_INVALID_ENUM, "%s(identifier = %s)",
 243                caller, _mesa_enum_to_string(identifier));
 244    return NULL;
 245 }
 246
 247 void GLAPIENTRY
 248 _mesa_ObjectLabel(GLenum identifier, GLuint name, GLsizei length,
 249                   const GLchar *label)
 250 {
 251    GET_CURRENT_CONTEXT(ctx);
 252    const char *callerstr;
 253    char **labelPtr;
 254
 255    if (_mesa_is_desktop_gl(ctx))
 256       callerstr = "glObjectLabel";
 257    else
 258       callerstr = "glObjectLabelKHR";
 259
 260    labelPtr = get_label_pointer(ctx, identifier, name, callerstr);
 261    if (!labelPtr)
 262       return;
 263
 264    set_label(ctx, labelPtr, label, length, callerstr);
 265 }
 266
 267 void GLAPIENTRY
 268 _mesa_GetObjectLabel(GLenum identifier, GLuint name, GLsizei bufSize,
 269                      GLsizei *length, GLchar *label)
 270 {
 271    GET_CURRENT_CONTEXT(ctx);
 272    const char *callerstr;
 273    char **labelPtr;
 274
 275    if (_mesa_is_desktop_gl(ctx))
 276       callerstr = "glGetObjectLabel";
 277    else
 278       callerstr = "glGetObjectLabelKHR";
 279
 280    if (bufSize < 0) {
 281       _mesa_error(ctx, GL_INVALID_VALUE, "%s(bufSize = %d)", callerstr,
 282                   bufSize);
 283       return;
 284    }
 285
 286    labelPtr = get_label_pointer(ctx, identifier, name, callerstr);
 287    if (!labelPtr)
 288       return;
 289
 290    copy_label(*labelPtr, label, length, bufSize);
 291 }
 292
 293 void GLAPIENTRY
 294 _mesa_ObjectPtrLabel(const void *ptr, GLsizei length, const GLchar *label)
 295 {
 296    GET_CURRENT_CONTEXT(ctx);
 297    struct gl_sync_object *syncObj;
 298    const char *callerstr;
 299    char **labelPtr;
 300
 301    syncObj = _mesa_get_and_ref_sync(ctx, (void*)ptr, true);
 302
 303    if (_mesa_is_desktop_gl(ctx))
 304       callerstr = "glObjectPtrLabel";
 305    else
 306       callerstr = "glObjectPtrLabelKHR";
 307
 308    if (!syncObj) {
 309       _mesa_error(ctx, GL_INVALID_VALUE, "%s (not a valid sync object)",
 310                   callerstr);
 311       return;
 312    }
 313
 314    labelPtr = &syncObj->Label;
 315
 316    set_label(ctx, labelPtr, label, length, callerstr);
 317    _mesa_unref_sync_object(ctx, syncObj, 1);
 318 }
 319
 320 void GLAPIENTRY
 321 _mesa_GetObjectPtrLabel(const void *ptr, GLsizei bufSize, GLsizei *length,
 322                         GLchar *label)
 323 {
 324    GET_CURRENT_CONTEXT(ctx);
 325    struct gl_sync_object *syncObj;
 326    const char *callerstr;
 327    char **labelPtr;
 328
 329    if (_mesa_is_desktop_gl(ctx))
 330       callerstr = "glGetObjectPtrLabel";
 331    else
 332       callerstr = "glGetObjectPtrLabelKHR";
 333
 334    if (bufSize < 0) {
 335       _mesa_error(ctx, GL_INVALID_VALUE, "%s(bufSize = %d)", callerstr,
 336                   bufSize);
 337       return;
 338    }
 339
 340    syncObj = _mesa_get_and_ref_sync(ctx, (void*)ptr, true);
 341    if (!syncObj) {
 342       _mesa_error(ctx, GL_INVALID_VALUE, "%s (not a valid sync object)",
 343                   callerstr);
 344       return;
 345    }
 346
 347    labelPtr = &syncObj->Label;
 348
 349    copy_label(*labelPtr, label, length, bufSize);
 350    _mesa_unref_sync_object(ctx, syncObj, 1);
 351 }