std::string AbstractObject::getLabelImplementationExt(const GLenum identifier, const GLuint name) {
GLsizei size = 0;
/* Get label size (w/o null terminator) */
#ifndef CORRADE_TARGET_NACL
const GLenum type = extTypeFromKhrIdentifier(identifier);
glGetObjectLabelEXT(type, name, 0, &size, nullptr);
#else
static_cast<void>(identifier);
static_cast<void>(name);
CORRADE_ASSERT_UNREACHABLE();
#endif
/* Make place also for the null terminator */
std::string label;
label.resize(size+1);
#ifndef CORRADE_TARGET_NACL
glGetObjectLabelEXT(identifier, name, size+1, nullptr, &label[0]);
#else
CORRADE_ASSERT_UNREACHABLE();
#endif
/* Pop null terminator and return the string */
label.resize(size);
return label;
}
std::string AbstractObject::getLabelImplementationExt(const GLenum identifier, const GLuint name) {
const GLenum type = extTypeFromKhrIdentifier(identifier);
/* Get label size (w/o null terminator) */
GLsizei size;
/** @todo Re-enable when extension loader is available for ES */
#ifndef MAGNUM_TARGET_GLES
glGetObjectLabelEXT(type, name, 0, &size, nullptr);
#else
static_cast<void>(type);
static_cast<void>(name);
CORRADE_INTERNAL_ASSERT(false);
#endif
/* Make place also for the null terminator */
std::string label;
label.resize(size+1);
/** @todo Re-enable when extension loader is available for ES */
#ifndef MAGNUM_TARGET_GLES
glGetObjectLabelEXT(identifier, name, size+1, nullptr, &label[0]);
#endif
/* Pop null terminator and return the string */
label.resize(size);
return label;
}
/**
* Get a GL_KHR_debug/GL_EXT_debug_label object label.
*
* The returned string should be destroyed with free() when no longer
* necessary.
*/
char *
getObjectLabel(Context &context, GLenum identifier, GLuint name)
{
if (!name) {
return NULL;
}
GLsizei length = 0;
if (context.KHR_debug) {
/*
* XXX: According to
* http://www.khronos.org/registry/gles/extensions/KHR/debug.txt
* description of glGetObjectLabel:
*
* "If <label> is NULL and <length> is non-NULL then no string will
* be returned and the length of the label will be returned in
* <length>."
*
* However NVIDIA 319.60 drivers return a zero length in such
* circumstances. 310.14 drivers worked fine though. So, just rely on
* GL_MAX_LABEL_LENGTH instead, which might waste a bit of memory, but
* should work reliably everywhere.
*/
if (0) {
glGetObjectLabel(identifier, name, 0, &length, NULL);
} else {
glGetIntegerv(GL_MAX_LABEL_LENGTH, &length);
}
}
if (context.EXT_debug_label) {
glGetObjectLabelEXT(identifier, name, 0, &length, NULL);
}
if (!length) {
return NULL;
}
char *label = (char *)calloc(length + 1, 1);
if (!label) {
return NULL;
}
if (context.KHR_debug) {
glGetObjectLabel(identifier, name, length + 1, NULL, label);
}
if (context.EXT_debug_label) {
glGetObjectLabelEXT(identifier, name, length + 1, NULL, label);
}
if (label[0] == '\0') {
free(label);
return NULL;
}
return label;
}
JNIEXPORT void JNICALL Java_org_lwjgl_opengles_EXTDebugLabel_nglGetObjectLabelEXT__IIIJJ(JNIEnv *__env, jclass clazz, jint type, jint object, jint bufSize, jlong lengthAddress, jlong labelAddress) {
glGetObjectLabelEXTPROC glGetObjectLabelEXT = (glGetObjectLabelEXTPROC)tlsGetFunction(401);
intptr_t length = (intptr_t)lengthAddress;
intptr_t label = (intptr_t)labelAddress;
UNUSED_PARAM(clazz)
glGetObjectLabelEXT(type, object, bufSize, length, label);
}