Finished profiler

TODO

@@ -11,7 +11,6 @@ Post-processing:
 * Lens dirt
 
 Technical:
-* Profiling
 * GLSL with includes
 * GLSL constants generator
 * Common handling for parameters

main.cc

@@ -85,15 +85,7 @@ void T_Main::mainLoop( )
 			render( );
 			T_Profiler::Profiler.end( "Full frame" );
 			SDL_GL_SwapWindow( window );
-
 			p.endFrame( );
-			const auto n( p.sections( ) );
-			for ( auto i = 0u ; i < n ; i ++ ) {
-				printf( "%s: %fms (start %fms)\n" ,
-						p.nameOf( i ).c_str( ) ,
-						p.durationOf( i ) ,
-						p.startOf( i ) );
-			}
 		}
 	}
 }
@@ -172,10 +164,13 @@ void T_Main::makeUI( )
 	ImGui::SetNextWindowPos( ImVec2( ) , ImGuiSetCond_Once );
 	ImGui::Begin( "Yay! Demo!" );
 
+	ImGui::Checkbox( "Profiler" , &T_Profiler::Profiler.uiEnabled( ) );
 	raymarcher->makeUI( );
 	bloomPass->makeUI( );
 
 	ImGui::End( );
+
+	T_Profiler::Profiler.makeUI( );
 }
 
 void T_Main::render( )

profiling.cc

@@ -109,6 +109,94 @@ void T_Profiler::end(
 	current_ = Invalid;
 }
 
+void T_Profiler::makeUI( )
+{
+	if ( !uiEnabled_ ) {
+		return;
+	}
+	auto const n( sections_.size( ) );
+	if ( n != secDurations_.size( ) ) {
+		return;
+	}
+
+	auto const& dspSize( ImGui::GetIO( ).DisplaySize );
+	ImGui::SetNextWindowSize( ImVec2( dspSize.x , 150 ) ,
+			ImGuiSetCond_Once );
+	ImGui::SetNextWindowPos( ImVec2( 0 , dspSize.y - 150 ) ,
+			ImGuiSetCond_Once );
+	ImGui::Begin( "Profiler" );
+
+	ImGui::BeginChild( "left" , ImVec2( 150 , 0 ) , true );
+	float angle( 0 );
+	for ( auto i = 0u ; i < n ; i ++ ) {
+		if ( displayed_.size( ) == i ) {
+			displayed_.push_back( true );
+		}
+		angle = fmod( angle + 137 , 360 );
+		ImVec4 color( 0 , 0 , 0 , 1 );
+		ImGui::ColorConvertHSVtoRGB( angle / 360. , .5 , 1 ,
+			color.x , color.y , color.z );
+		ImGui::PushStyleColor( ImGuiCol_Text , color );
+		ImGui::Checkbox( sections_[ i ].c_str( ) ,
+				(bool*) &displayed_[ i ] );
+		ImGui::PopStyleColor( );
+	}
+	ImGui::EndChild( );
+	ImGui::SameLine( );
+
+	auto* const dl( ImGui::GetWindowDrawList( ) );
+	const ImVec2 wp( ImGui::GetWindowPos( ) );
+	const ImVec2 pos( ImGui::GetCursorPos( ) );
+	const ImVec2 ws( ImGui::GetWindowContentRegionMax( ) );
+	const ImVec2 start( wp.x + pos.x , wp.y + pos.y );
+	auto& style( ImGui::GetStyle( ) );
+	const ImVec2 end( wp.x + ws.x + 1 - style.FramePadding.x ,
+			wp.y + ws.y + 1 - style.FramePadding.y );
+	dl->AddRectFilled( start , end ,
+			ImGui::GetColorU32( ImVec4( .5 , .5 , .5 , .8 ) ) );
+
+	// Ms marks
+	static constexpr float msWidth = 20;
+	float lp( 0 );
+	while ( lp < ws.x ) {
+		dl->AddLine( ImVec2( start.x + lp , start.y ) ,
+				ImVec2( start.x + lp , end.y ) ,
+				ImGui::GetColorU32( ImVec4( 0 , 0 , 0 , .8 ) ) );
+		lp += msWidth;
+	}
+
+	// 60/30FPS line
+	dl->AddLine( ImVec2( start.x + msWidth * 1000. / 60. , start.y ) ,
+		ImVec2( start.x + msWidth * 1000. / 60. , end.y ) ,
+		ImGui::GetColorU32( ImVec4( 0 , 1 , 0 , 1 ) ) );
+	dl->AddLine( ImVec2( start.x + msWidth * 1000. / 30. , start.y ) ,
+		ImVec2( start.x + msWidth * 1000. / 30. , end.y ) ,
+		ImGui::GetColorU32( ImVec4( 1 , 0 , 0 , 1 ) ) );
+
+	// Plot
+	static constexpr float plHeight = 5;
+	float lh( 0 );
+	angle = 0;
+	for ( auto i = 0u ; i < n ; i ++ ) {
+		angle = fmod( angle + 137 , 360 );
+		if ( !displayed_[ i ] ) {
+			continue;
+		}
+		const float lx0 = msWidth * secStarts_[ i ];
+		const float lx1 = msWidth * ( secStarts_[ i ] + secDurations_[ i ] );
+		const float ly1 = lh + plHeight;
+		ImVec4 color( 0 , 0 , 0 , 1 );
+		ImGui::ColorConvertHSVtoRGB( angle / 360. , .5 , 1 ,
+			color.x , color.y , color.z );
+		dl->AddRectFilled( ImVec2( start.x + lx0 , start.y + lh ) ,
+				ImVec2( start.x + lx1 , start.y + ly1 ) ,
+				ImGui::GetColorU32( color ) );
+		lh = ly1 + 1;
+	}
+
+	ImGui::End( );
+}
+
 float T_Profiler::computeDuration(
 		__rd__ const uint32_t section ) const
 {

profiling.hh

@@ -40,6 +40,9 @@ struct T_Profiler
 	float startOf( __rd__ const uint32_t section ) const
 		{ return secStarts_[ section ]; }
 
+	void makeUI( );
+	bool& uiEnabled( ) { return uiEnabled_; }
+
     private:
 	using T_SamplesList_ = std::vector< T_ProfilerSamples >;
 	using T_Data_ = std::vector< T_SamplesList_ >;
@@ -59,5 +62,8 @@ struct T_Profiler
 
 	std::vector< float > secDurations_;
 	std::vector< float > secStarts_;
+
+	bool uiEnabled_ = false;
+	std::vector< int > displayed_;
 };