void
WebGL2Context::EndQuery(GLenum target)
{
if (IsContextLost())
return;
if (!ValidateQueryTarget(target, "endQuery"))
return;
WebGLRefPtr<WebGLQuery>& querySlot = GetQuerySlotByTarget(target);
WebGLQuery* activeQuery = querySlot.get();
if (!activeQuery || target != activeQuery->mType)
{
/* From GLES's EXT_occlusion_query_boolean:
* marks the end of the sequence of commands to be tracked for the
* query type given by <target>. The active query object for
* <target> is updated to indicate that query results are not
* available, and the active query object name for <target> is reset
* to zero. When the commands issued prior to EndQueryEXT have
* completed and a final query result is available, the query object
* active when EndQueryEXT is called is updated by the GL. The query
* object is updated to indicate that the query results are
* available and to contain the query result. If the active query
* object name for <target> is zero when EndQueryEXT is called, the
* error INVALID_OPERATION is generated.
*/
ErrorInvalidOperation("endQuery: There is no active query of type %s.",
GetQueryTargetEnumString(target));
return;
}
MakeContextCurrent();
if (target == LOCAL_GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN) {
gl->fEndQuery(LOCAL_GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN);
} else {
gl->fEndQuery(SimulateOcclusionQueryTarget(gl, target));
}
UpdateBoundQuery(target, nullptr);
}
already_AddRefed<WebGLQuery>
WebGL2Context::GetQuery(GLenum target, GLenum pname)
{
if (IsContextLost())
return nullptr;
if (!ValidateQueryTarget(target, "getQuery"))
return nullptr;
if (pname != LOCAL_GL_CURRENT_QUERY) {
/* OpenGL ES 3.0 spec 6.1.7:
* pname must be CURRENT_QUERY.
*/
ErrorInvalidEnum("getQuery: `pname` must be CURRENT_QUERY.");
return nullptr;
}
WebGLRefPtr<WebGLQuery>& targetSlot = GetQuerySlotByTarget(target);
nsRefPtr<WebGLQuery> tmp = targetSlot.get();
return tmp.forget();
}
void
WebGL2Context::UpdateBoundQuery(GLenum target, WebGLQuery* query)
{
WebGLRefPtr<WebGLQuery>& querySlot = GetQuerySlotByTarget(target);
querySlot = query;
}
void
WebGL2Context::BeginQuery(GLenum target, WebGLQuery* query)
{
if (IsContextLost())
return;
if (!ValidateQueryTarget(target, "beginQuery"))
return;
if (!query) {
/* From GLES's EXT_occlusion_query_boolean:
* BeginQueryEXT sets the active query object name for the query
* type given by <target> to <id>. 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.
*/
ErrorInvalidOperation("beginQuery: Query should not be null.");
return;
}
if (query->IsDeleted()) {
/* From GLES's EXT_occlusion_query_boolean:
* BeginQueryEXT fails and an INVALID_OPERATION error is generated
* if <id> is not a name returned from a previous call to
* GenQueriesEXT, or if such a name has since been deleted with
* DeleteQueriesEXT.
*/
ErrorInvalidOperation("beginQuery: Query has been deleted.");
return;
}
if (query->HasEverBeenActive() &&
query->mType != target)
{
ErrorInvalidOperation("beginQuery: Target doesn't match with the query"
" type.");
return;
}
WebGLRefPtr<WebGLQuery>& querySlot = GetQuerySlotByTarget(target);
WebGLQuery* activeQuery = querySlot.get();
if (activeQuery)
return ErrorInvalidOperation("beginQuery: An other query already active.");
if (!query->HasEverBeenActive())
query->mType = target;
MakeContextCurrent();
if (target == LOCAL_GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN) {
gl->fBeginQuery(LOCAL_GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN,
query->mGLName);
} else {
gl->fBeginQuery(SimulateOcclusionQueryTarget(gl, target),
query->mGLName);
}
UpdateBoundQuery(target, query);
}
