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Support gpu timing on systems with disjoint timer extension

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This commit is contained in:
Brad Davis 2019-01-17 17:51:12 -08:00
parent d8f781deae
commit 1d93b6ada0
1 changed files with 36 additions and 6 deletions
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42
libraries/gpu-gl-common/src/gpu/gl/GLBackendQuery.cpp
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@ -24,6 +24,17 @@ const uint32_t MAX_RANGE_QUERY_DEPTH = 10000;
static bool timeElapsed = false;
#endif
#if defined(USE_GLES)
static bool hasTimerExtension() {
static std::once_flag once;
static bool result = false;
std::call_once(once, [&] {
result = glGetQueryObjectui64vEXT != nullptr;
});
return result;
}
#endif
void GLBackend::do_beginQuery(const Batch& batch, size_t paramOffset) {
auto query = batch._queries.get(batch._params[paramOffset]._uint);
GLQuery* glquery = syncGPUObject(*query);
@ -33,7 +44,11 @@ void GLBackend::do_beginQuery(const Batch& batch, size_t paramOffset) {
++_queryStage._rangeQueryDepth;
glquery->_batchElapsedTimeBegin = std::chrono::high_resolution_clock::now();
#if !defined(USE_GLES)
#if defined(USE_GLES)
if (hasTimerExtension()) {
glQueryCounterEXT(glquery->_beginqo, GL_TIMESTAMP_EXT);
}
#else
if (timeElapsed) {
if (_queryStage._rangeQueryDepth <= MAX_RANGE_QUERY_DEPTH) {
glBeginQuery(GL_TIME_ELAPSED, glquery->_endqo);
@ -52,7 +67,11 @@ void GLBackend::do_endQuery(const Batch& batch, size_t paramOffset) {
auto query = batch._queries.get(batch._params[paramOffset]._uint);
GLQuery* glquery = syncGPUObject(*query);
if (glquery) {
#if !defined(USE_GLES)
#if defined(USE_GLES)
if (hasTimerExtension()) {
glQueryCounterEXT(glquery->_endqo, GL_TIMESTAMP_EXT);
}
#else
if (timeElapsed) {
if (_queryStage._rangeQueryDepth <= MAX_RANGE_QUERY_DEPTH) {
glEndQuery(GL_TIME_ELAPSED);
@ -79,7 +98,21 @@ void GLBackend::do_getQuery(const Batch& batch, size_t paramOffset) {
if (glquery->_rangeQueryDepth > MAX_RANGE_QUERY_DEPTH) {
query->triggerReturnHandler(glquery->_result, glquery->_batchElapsedTime);
} else {
#if !defined(USE_GLES)
#if defined(USE_GLES)
glquery->_result = 0;
if (hasTimerExtension()) {
glGetQueryObjectui64vEXT(glquery->_endqo, GL_QUERY_RESULT_AVAILABLE, &glquery->_result);
if (glquery->_result == GL_TRUE) {
GLuint64 start, end;
glGetQueryObjectui64vEXT(glquery->_beginqo, GL_QUERY_RESULT, &start);
glGetQueryObjectui64vEXT(glquery->_endqo, GL_QUERY_RESULT, &end);
glquery->_result = end - start;
query->triggerReturnHandler(glquery->_result, glquery->_batchElapsedTime);
}
} else {
query->triggerReturnHandler(0, glquery->_batchElapsedTime);
}
#else
glGetQueryObjectui64v(glquery->_endqo, GL_QUERY_RESULT_AVAILABLE, &glquery->_result);
if (glquery->_result == GL_TRUE) {
if (timeElapsed) {
@ -92,9 +125,6 @@ void GLBackend::do_getQuery(const Batch& batch, size_t paramOffset) {
}
query->triggerReturnHandler(glquery->_result, glquery->_batchElapsedTime);
}
#else
// gles3 is not supporting true time query returns just the batch elapsed time
query->triggerReturnHandler(0, glquery->_batchElapsedTime);
#endif
(void)CHECK_GL_ERROR();
}