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Calculate frame-rate for the user, as a purely luxurious feature

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..and to reduce sample code size a little.
This commit is contained in:
ocornut
2015-02-11 18:28:17 +00:00
parent d65e051a07
commit cb0a4db048
6 changed files with 16 additions and 44 deletions
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12
examples/opengl_example/main.cpp
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@ -255,17 +255,7 @@ int main(int argc, char** argv)
ImGui::ColorEdit3("clear color", (float*)&clear_col);
if (ImGui::Button("Test Window")) show_test_window ^= 1;
if (ImGui::Button("Another Window")) show_another_window ^= 1;
// Calculate and show frame rate
static int ms_per_frame_idx = 0;
static float ms_per_frame[60] = { 0 };
static float ms_per_frame_accum = 0.0f;
ms_per_frame_accum -= ms_per_frame[ms_per_frame_idx];
ms_per_frame[ms_per_frame_idx] = ImGui::GetIO().DeltaTime * 1000.0f;
ms_per_frame_accum += ms_per_frame[ms_per_frame_idx];
ms_per_frame_idx = (ms_per_frame_idx + 1) % 60;
const float ms_per_frame_avg = ms_per_frame_accum / 60;
ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", ms_per_frame_avg, 1000.0f / ms_per_frame_avg);
ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
}
// 2. Show another simple window, this time using an explicit Begin/End pair