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