void GL_APIENTRY GetQueryivEXT(GLenum target, GLenum pname, GLint *params)
{
EVENT("GLenum target = 0x%X, GLenum pname = 0x%X, GLint *params = 0x%0.8p)", target, pname, params);
Context *context = GetValidGlobalContext();
if (context)
{
if (!ValidQueryType(context, target))
{
context->recordError(Error(GL_INVALID_ENUM));
return;
}
switch (pname)
{
case GL_CURRENT_QUERY_EXT:
params[0] = context->getState().getActiveQueryId(target);
break;
default:
context->recordError(Error(GL_INVALID_ENUM));
return;
}
}
}
bool ValidateBeginQuery(gl::Context *context, GLenum target, GLuint id)
{
if (!ValidQueryType(context, target))
{
return gl::error(GL_INVALID_ENUM, false);
}
if (id == 0)
{
return gl::error(GL_INVALID_OPERATION, false);
}
// From EXT_occlusion_query_boolean: If BeginQueryEXT is called with an <id>
// of zero, if the active query object name for <target> is non-zero (for the
// targets ANY_SAMPLES_PASSED_EXT and ANY_SAMPLES_PASSED_CONSERVATIVE_EXT, if
// the active query for either target is non-zero), if <id> is the name of an
// existing query object whose type does not match <target>, or if <id> is the
// active query object name for any query type, the error INVALID_OPERATION is
// generated.
// Ensure no other queries are active
// NOTE: If other queries than occlusion are supported, we will need to check
// separately that:
// a) The query ID passed is not the current active query for any target/type
// b) There are no active queries for the requested target (and in the case
// of GL_ANY_SAMPLES_PASSED_EXT and GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT,
// no query may be active for either if glBeginQuery targets either.
if (context->isQueryActive())
{
return gl::error(GL_INVALID_OPERATION, false);
}
Query *queryObject = context->getQuery(id, true, target);
// check that name was obtained with glGenQueries
if (!queryObject)
{
return gl::error(GL_INVALID_OPERATION, false);
}
// check for type mismatch
if (queryObject->getType() != target)
{
return gl::error(GL_INVALID_OPERATION, false);
}
return true;
}
bool ValidateEndQuery(gl::Context *context, GLenum target)
{
if (!ValidQueryType(context, target))
{
return gl::error(GL_INVALID_ENUM, false);
}
const Query *queryObject = context->getActiveQuery(target);
if (queryObject == NULL)
{
return gl::error(GL_INVALID_OPERATION, false);
}
if (!queryObject->isStarted())
{
return gl::error(GL_INVALID_OPERATION, false);
}
return true;
}
