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fps display

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This commit is contained in:
Till Wübbers
2025-03-29 05:37:07 +01:00
parent fc67ff62be
commit 77a6a0a510
3 changed files with 37 additions and 2 deletions
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35
src/game/Tools.cpp
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@@ -1,10 +1,18 @@
#include "Instance.h"
#include "Mesh.h"
#include "Tools.h"
#include "bx/timer.h"
#include <imgui.h>
#include <tracy/Tracy.hpp>
namespace
{
constexpr int32_t FrameTimeBufSize = 512;
int64_t FrameTimes[FrameTimeBufSize]{0};
int32_t FrameTimeIdx = 0;
} // namespace
namespace Tools
{
const char* GetAssetPath(Generated::AssetHandle assetHandle)
@@ -337,10 +345,35 @@ namespace Tools
{
auto& drawList = *ImGui::GetWindowDrawList();
ImVec2 pos = ImGui::GetWindowPos();
drawList.AddRectFilled(pos, {pos.x + FpsPlotSize.x, pos.y + FpsPlotSize.y}, 0xFFFFFF33);
drawList.AddRectFilled(pos, {pos.x + FpsPlotSize.x, pos.y + FpsPlotSize.y}, 0x22222233);
float scale = 1000.0f;
for (int32_t i = 0; i < FrameTimeBufSize; ++i)
{
int32_t idx = FrameTimeIdx - i - 1;
int32_t prevIdx = idx - 1;
if (idx < 0) idx += FrameTimeBufSize;
if (prevIdx < 0) prevIdx += FrameTimeBufSize;
if (FrameTimes[idx] == 0 || FrameTimes[prevIdx] == 0) continue;
int64_t frameTime = FrameTimes[idx] - FrameTimes[prevIdx];
double frameTimeSec = (double)frameTime / bx::getHPFrequency();
drawList.AddLine(
{pos.x + (FpsPlotSize.x - i - 1), pos.y + FpsPlotSize.y},
{pos.x + (FpsPlotSize.x - i - 1), pos.y + FpsPlotSize.y - (float)frameTimeSec * scale},
0xFFFFFFFF);
}
}
ImGui::EndChild();
}
ImGui::End();
}
void MeasureFrameEnd()
{
FrameTimes[FrameTimeIdx] = bx::getHPCounter();
++FrameTimeIdx;
if (FrameTimeIdx >= FrameTimeBufSize) FrameTimeIdx = 0;
}
} // namespace Tools