uint64_t duration;
};
+static bool supportsElapsed = true;
+static bool supportsTimestamp = true;
+static bool supportsOcclusion = true;
+
static bool firstFrame = true;
static std::list<CallQuery> callQueries;
static std::map<glws::Context*, GLuint> activePrograms;
GLuint query = 0;
GLuint64 timestamp = 0;
- if (retrace::profilingGpuTimes) {
+ if (retrace::profilingGpuTimes && supportsTimestamp) {
glGenQueries(1, &query);
glQueryCounter(query, GL_TIMESTAMP);
glGetQueryObjectui64vEXT(query, GL_QUERY_RESULT, ×tamp);
GLuint64 timestamp = 0, duration = 0, samples = 0;
if (retrace::profilingGpuTimes) {
- glGetQueryObjectui64vEXT(query.ids[0], GL_QUERY_RESULT, ×tamp);
- glGetQueryObjectui64vEXT(query.ids[1], GL_QUERY_RESULT, &duration);
+ if (supportsTimestamp) {
+ glGetQueryObjectui64vEXT(query.ids[0], GL_QUERY_RESULT, ×tamp);
+ }
+
+ if (supportsElapsed) {
+ glGetQueryObjectui64vEXT(query.ids[1], GL_QUERY_RESULT, &duration);
+ }
}
- if (retrace::profilingPixelsDrawn) {
+ if (retrace::profilingPixelsDrawn && supportsOcclusion) {
glGetQueryObjectui64vEXT(query.ids[2], GL_QUERY_RESULT, &samples);
}
void
beginProfile(trace::Call &call) {
if (firstFrame) {
+ /* Check for extension support */
const char* extensions = (const char*)glGetString(GL_EXTENSIONS);
- if (!glws::checkExtension("GL_ARB_timer_query", extensions)) {
- std::cout << "Error: Cannot run profile, GL_ARB_timer_query extension is not supported." << std::endl;
+
+ supportsTimestamp = glws::checkExtension("GL_ARB_timer_query", extensions);
+ supportsElapsed = glws::checkExtension("GL_EXT_timer_query", extensions) || supportsTimestamp;
+ supportsOcclusion = glws::checkExtension("GL_ARB_occlusion_query", extensions);
+
+ if (retrace::profilingGpuTimes && !supportsTimestamp && !supportsElapsed) {
+ std::cout << "Error: Cannot run profile, GL_EXT_timer_query extension is not supported." << std::endl;
+ exit(-1);
+ }
+
+ if (retrace::profilingPixelsDrawn && !supportsOcclusion) {
+ std::cout << "Error: Cannot run profile, GL_ARB_occlusion_query extension is not supported." << std::endl;
exit(-1);
}
glGenQueries(3, query.ids);
if (retrace::profilingGpuTimes) {
- glQueryCounter(query.ids[0], GL_TIMESTAMP);
- glBeginQuery(GL_TIME_ELAPSED, query.ids[1]);
+ if (supportsTimestamp) {
+ glQueryCounter(query.ids[0], GL_TIMESTAMP);
+ }
+
+ if (supportsElapsed) {
+ glBeginQuery(GL_TIME_ELAPSED, query.ids[1]);
+ }
}
- if (retrace::profilingPixelsDrawn) {
+ if (retrace::profilingPixelsDrawn && supportsOcclusion) {
glBeginQuery(GL_SAMPLES_PASSED, query.ids[2]);
}
query.duration = (os::getTime() - query.start) * (1.0E9 / os::timeFrequency);
}
- if (retrace::profilingGpuTimes) {
+ if (retrace::profilingGpuTimes && supportsElapsed) {
glEndQuery(GL_TIME_ELAPSED);
}
- if (retrace::profilingPixelsDrawn) {
+ if (retrace::profilingPixelsDrawn && supportsOcclusion) {
glEndQuery(GL_SAMPLES_PASSED);
}
}