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- Add gpu stat that displays how much time the GPU spent on named GL groups

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This commit is contained in:
Magnus Norddahl 2017-06-03 18:14:24 +02:00
parent 2c7a0c87c8
commit d38dae5de8
1 changed files with 45 additions and 0 deletions
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45
src/gl/system/gl_debug.cpp
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@ -29,8 +29,10 @@
#include "gl/system/gl_system.h"
#include "gl/system/gl_interface.h"
#include "gl/system/gl_debug.h"
#include "stats.h"
#include <set>
#include <string>
#include <map>
#ifndef _MSC_VER
#include <signal.h>
@ -46,6 +48,20 @@ CUSTOM_CVAR(Int, gl_debug_level, 0, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR_NOIN
CVAR(Bool, gl_debug_breakpoint, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG);
namespace
{
bool gpuStatActive = false;
bool keepGpuStatActive = false;
std::vector<std::pair<FString, GLuint>> timeElapsedQueries;
FString gpuStatOutput;
}
ADD_STAT(gpu)
{
keepGpuStatActive = true;
return gpuStatOutput;
}
//-----------------------------------------------------------------------------
//
// Updates OpenGL debugging state
@ -54,6 +70,22 @@ CVAR(Bool, gl_debug_breakpoint, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG);
void FGLDebug::Update()
{
gpuStatOutput = "";
for (auto &query : timeElapsedQueries)
{
GLuint timeElapsed = 0;
glGetQueryObjectuiv(query.second, GL_QUERY_RESULT, &timeElapsed);
glDeleteQueries(1, &query.second);
FString out;
out.Format("%s=%04.2f ms\n", query.first.GetChars(), timeElapsed / 1000000.0f);
gpuStatOutput += out;
}
timeElapsedQueries.clear();
gpuStatActive = keepGpuStatActive;
keepGpuStatActive = false;
if (!HasDebugApi())
return;
@ -98,6 +130,14 @@ void FGLDebug::PushGroup(const FString &name)
{
glPushDebugGroup(GL_DEBUG_SOURCE_APPLICATION, 0, (GLsizei)name.Len(), name.GetChars());
}
if (gpuStatActive)
{
GLuint queryHandle = 0;
glGenQueries(1, &queryHandle);
glBeginQuery(GL_TIME_ELAPSED, queryHandle);
timeElapsedQueries.push_back({ name, queryHandle });
}
}
void FGLDebug::PopGroup()
@ -106,6 +146,11 @@ void FGLDebug::PopGroup()
{
glPopDebugGroup();
}
if (gpuStatActive)
{
glEndQuery(GL_TIME_ELAPSED);
}
}
//-----------------------------------------------------------------------------