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Shows proper scene render time in editor info

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Also fixed GPU profiler, which was not working on nvidia hardware.
This commit is contained in:
Juan Linietsky 2020-04-10 14:18:42 -03:00
parent ae42cb7b0a
commit d06f8ef75a
9 changed files with 208 additions and 26 deletions
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35
drivers/vulkan/rendering_device_vulkan.cpp
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@ -6935,9 +6935,42 @@ uint64_t RenderingDeviceVulkan::get_captured_timestamps_frame() const {
return frames[frame].index;
}
static void mult64to128(uint64_t u, uint64_t v, uint64_t &h, uint64_t &l) {
uint64_t u1 = (u & 0xffffffff);
uint64_t v1 = (v & 0xffffffff);
uint64_t t = (u1 * v1);
uint64_t w3 = (t & 0xffffffff);
uint64_t k = (t >> 32);
u >>= 32;
t = (u * v1) + k;
k = (t & 0xffffffff);
uint64_t w1 = (t >> 32);
v >>= 32;
t = (u1 * v) + k;
k = (t >> 32);
h = (u * v) + w1 + k;
l = (t << 32) + w3;
}
uint64_t RenderingDeviceVulkan::get_captured_timestamp_gpu_time(uint32_t p_index) const {
ERR_FAIL_UNSIGNED_INDEX_V(p_index, frames[frame].timestamp_result_count, 0);
return frames[frame].timestamp_result_values[p_index] * limits.timestampPeriod;
// this sucks because timestampPeriod multiplier is a float, while the timestamp is 64 bits nanosecs.
// so, in cases like nvidia which give you enormous numbers and 1 as multiplier, multiplying is next to impossible
// need to do 128 bits fixed point multiplication to get the rigth value
uint64_t shift_bits = 16;
uint64_t h, l;
mult64to128(frames[frame].timestamp_result_values[p_index], uint64_t(double(limits.timestampPeriod) * double(1 << shift_bits)), h, l);
l >>= shift_bits;
l |= h << (64 - shift_bits);
return l;
}
uint64_t RenderingDeviceVulkan::get_captured_timestamp_cpu_time(uint32_t p_index) const {
ERR_FAIL_UNSIGNED_INDEX_V(p_index, frames[frame].timestamp_result_count, 0);