Stress testing with math on the CPU

docs/tasks/refactoring.todo

@@ -1,5 +1,17 @@
 
 
 ☐ Create base classes for serializeable objects
-    ☐ JSON serializeable
+    ✔ JSON serializeable @done(22-08-12 19:19)
     ☐ Binary serializeable
+
+Renderer rewrite:
+    ✔ Batch rendering minimally working @done(22-08-12 19:19)
+    ☐ See if it's possible/better to move the matrix math into the shaders @high
+    ☐ Textures in batch renderer @high
+    ☐ DrawSprite method
+        ☐ Sprite shader
+    ☐ Text Renderer
+    ☐ DrawElipse @low
+        ☐ Elipse Shader
+        ☐ Elipse Batch data
+    

scripts/build.bat

@@ -30,7 +30,9 @@ IF NOT "!BUILD_ERRORLEVEL!"=="0" (
     EXIT /B !BUILD_ERRORLEVEL!
 )
 
-xcopy /y test_data\engine_state.xml build\Release\
+xcopy /y test_data\engine_state.json build\Release\
+xcopy /y src\renderer\shaders\* build\Release\*
+
 ) ELSE (
 cmake --build build/ --target ALL_BUILD --config Debug
 

src/core/core.cpp

@@ -342,6 +342,11 @@ namespace lunarium
         }
     }
 
+    const FrameData& Core::GetFrameData() const
+    {
+        return mFrameCounter.GetFrameData();
+    }
+
     ////////////////////////////////////////////////////////////
     //				STATIC INTERFACE
     ////////////////////////////////////////////////////////////

src/core/core.h

@@ -40,6 +40,7 @@ namespace lunarium
 
         bool IsInit() const;
         const State& GetState() const;
+        const FrameData& GetFrameData() const;
 
         void ApplyState(State newState);
 

src/run_modes/testbed/scenes/simple_render_scene.cpp

@@ -24,7 +24,7 @@
 namespace lunarium
 {
     SimpleRenderScene::SimpleRenderScene(uint32_t logCat)
-        : BaseScene(logCat)
+        : BaseScene(logCat), mStressTest(true), mFrameTime(0.0), mNumFrames(0)
     {
         srand((u32)time(0));
     }
@@ -142,6 +142,11 @@ namespace lunarium
             angle -= 0.1f;
         }
 
+        if (Core::Input().IsKeyPressed(KeyCode::TAB))
+        {
+            mStressTest = !mStressTest;
+        }
+
         if (Core::Input().IsKeyPressed(KeyCode::Q))
         {
             // Test writing out a rendered image with transparency
@@ -160,17 +165,20 @@ namespace lunarium
             Logger::Info(mLogCat, "Running transparent image test");
 
             g.DrawQuad(Rectangle(500, 400, 300, 300), Color(0.5f, 0.0f, 0.75f, 1.0f));
+            g.DrawQuad(Rectangle(200, 300, 100, 100), Color(0.2f, 0.5f, 0.4f, 1.0f), nullptr, 45.0f);
             g.DrawString("This is a test of rendering an image with transparency", 
                             Rectangle::MakeFromTopLeft(50, 50, 600, 200), Color(0.0f, 1.0f, 0.2f, 1.0f), 0.5f);
             
             g.EndDraw();
             mpRenderedImage = mFrameBufferTwo->GetTexture();
+            mFrameBufferTwo->Unbind();
             //mpRenderedImage = Core::GetInstance().EndRenderToTexture();
             g.SetClearColor(prev);
 
             stbi_flip_vertically_on_write(1);
             stbi_write_png("lunarium_test_image.png", mpRenderedImage->GetWidth(), mpRenderedImage->GetHeight(), 4, 
                             mpRenderedImage->GetPixels(), mpRenderedImage->GetWidth() * 4);
+            //Logger::Info(mLogCat, "")
         }
 
         mImageSize.Width = Math::ClampI(mImageSize.Width, 320, 1280);
@@ -202,16 +210,26 @@ namespace lunarium
         int w, h;
         Core::MainWindow().GetFramebufferSize(&w, &h);
         OrthographicCamera main_cam(Vec2f { 0.0f, 0.0f }, Sizef { (float)w, (float)h });
+        Core::GUI().NewFrame();
+        mTimer.Reset();
         Core::Graphics().BeginDraw(&main_cam);
+
+        if (mStressTest)
+        {
+            RenderBatchStressTest(Core::Graphics());
+        }
+        else
+        {
             RenderScene(Core::Graphics());
+        }
 
-        Core::GUI().NewFrame();
 
+        Core::Graphics().EndDraw(); // Graphics end draw must happen before GUI end frame
         DrawStatsGUI();
-
         Core::GUI().EndFrame();
-        Core::Graphics().EndDraw();
         Core::MainWindow().SwapBuffers();
+        mFrameTime += mTimer.GetElapsedSeconds();
+        mNumFrames++;
         mRenderStats = Core::Graphics().GetFrameStats();
         Core::Graphics().ResetFrameStats();
     }
@@ -230,10 +248,6 @@ namespace lunarium
         // g.DrawQuad(Rectangle(800, 500, 100.0f, 100.0f), Color(0.75f, 0.5f, 0.425f), nullptr, 90.0f);
         // g.DrawQuad(Rectangle(300, 400, 64.0f, 64.0f), Color(0.25f, 0.5f, 1.0f, 1.0f), nullptr, box_angle * -1);
 
-        for (int i = 0; i < NUM_QUADS; i++)
-        {   
-            g.DrawQuad(mQuads[i], mQuadColors[i], nullptr, box_angle + (i % 360));
-        }
 
         //g.DrawQuads(mQuads, NUM_QUADS, mQuadColors);
 
@@ -248,9 +262,18 @@ namespace lunarium
         //             dest, Color(1.0f, 1.0f, 1.0f, 0.8f));
     }
     
+    void SimpleRenderScene::RenderBatchStressTest(Renderer2D& g)
+    {
+        for (int i = 0; i < NUM_QUADS; i++)
+        {   
+            g.DrawQuad(mQuads[i], mQuadColors[i], nullptr, box_angle + (i / 10.0f));
+        }
+    }
+
     
     void SimpleRenderScene::DrawStatsGUI()
     {
+        ImGui::SetNextWindowPos(ImVec2(0, 0), ImGuiCond_FirstUseEver);
         ImGui::SetNextWindowSize(ImVec2(400, 300));
         ImGui::Begin("RENDER INFO");
         ImGui::BeginChild("Per Frame", ImVec2(ImGui::GetWindowSize().x - 15, ImGui::GetFrameHeightWithSpacing() * 3.5f), true);
@@ -259,10 +282,11 @@ namespace lunarium
         ImGui::Text("Number of triangles: %d", mRenderStats.NumTris);
         ImGui::Text("Draw calls: %d", mRenderStats.DrawCalls);
         ImGui::EndChild();
-        ImGui::BeginChild("General", ImVec2(ImGui::GetWindowSize().x - 15, ImGui::GetFrameHeightWithSpacing() * 2.5f), true);
+        ImGui::BeginChild("General", ImVec2(ImGui::GetWindowSize().x - 15, ImGui::GetFrameHeightWithSpacing() * 3.5f), true);
         ImGui::Text("General Info");
         ImGui::Separator();
-        ImGui::Text("General render info...");
+        ImGui::Text("Average Render time: %f", mFrameTime/ mNumFrames);
+        ImGui::Text("FPS: %d", Core::GetInstance().GetFrameData().CurrentFPS);
         ImGui::EndChild();
         ImGui::End();
     }

src/run_modes/testbed/scenes/simple_render_scene.h

@@ -12,6 +12,7 @@
 #include "base_scene.h"
 #include <renderer/renderer2D.h>
 #include <core/types.h>
+#include <utils/high_resolution_timer.h>
 #include <string>
 
 namespace lunarium
@@ -26,6 +27,7 @@ namespace lunarium
         virtual void OnLoad();
         virtual void OnTick(double delta);
         void RenderScene(Renderer2D& g);
+        void RenderBatchStressTest(Renderer2D& g);
 
     private:
         
@@ -41,9 +43,14 @@ namespace lunarium
         float mSrcWidth;
         float mSrcHeight;
 
+        HighResTimer mTimer;
+        double mFrameTime;
+        i64 mNumFrames;
         Renderer2D::FrameStats mRenderStats;
 
-        const int NUM_QUADS = 5000;
+        bool mStressTest;
+
+        const int NUM_QUADS = 50000;
         Color* mQuadColors;
         Rectangle* mQuads;