From 2088dde6caeff4874b5a6c09977021b3ca34c3f3 Mon Sep 17 00:00:00 2001
From: sebastian <mail@sebastian.boeckelmann.de>
Date: Wed, 29 Jul 2026 14:44:07 +0200
Subject: [PATCH] ADD: Render first triangle

---
 .../shaders/{basic.vert.glsl => basic.vert}   |  0
 engine/src/core/Window.cpp                    |  1 +
 .../utils/openglWrapper/openglObjects/Vao.cpp |  3 +++
 game/src/ColorRaceApp.cpp                     | 25 ++++++++++++++++++-
 game/src/ColorRaceApp.h                       | 18 ++++++++++++-
 5 files changed, 45 insertions(+), 2 deletions(-)
 rename assets/shaders/{basic.vert.glsl => basic.vert} (100%)

diff --git a/assets/shaders/basic.vert.glsl b/assets/shaders/basic.vert
similarity index 100%
rename from assets/shaders/basic.vert.glsl
rename to assets/shaders/basic.vert
diff --git a/engine/src/core/Window.cpp b/engine/src/core/Window.cpp
index 1ebdc42..a02c0af 100644
--- a/engine/src/core/Window.cpp
+++ b/engine/src/core/Window.cpp
@@ -48,6 +48,7 @@ namespace engine {
         GLStateCache::init();
 
         if (config.debugContext) {
+            std::cout << "Debug Context should be enabled" << std::endl;
             glEnable(GL_DEBUG_OUTPUT);
             glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
             glDebugMessageCallback(DebugCallback, nullptr);
diff --git a/engine/src/utils/openglWrapper/openglObjects/Vao.cpp b/engine/src/utils/openglWrapper/openglObjects/Vao.cpp
index 52cf342..537ebe6 100644
--- a/engine/src/utils/openglWrapper/openglObjects/Vao.cpp
+++ b/engine/src/utils/openglWrapper/openglObjects/Vao.cpp
@@ -5,6 +5,9 @@
 #include "Vao.h"
 #include "Vao.h"
 
+#include <iostream>
+#include <ostream>
+
 namespace engine {
 
 Vao::Vao(unsigned int id) : m_id(id) {
diff --git a/game/src/ColorRaceApp.cpp b/game/src/ColorRaceApp.cpp
index 10f14f2..61213f5 100644
--- a/game/src/ColorRaceApp.cpp
+++ b/game/src/ColorRaceApp.cpp
@@ -3,10 +3,33 @@
 //
 
 #include "ColorRaceApp.h"
+
+#include <iostream>
+#include <ostream>
+
+void ColorRaceApp::initTriangle() {
+    float vertices[] = {
+        -0.5f, -0.5f, 0.0f,
+         0.5f, -0.5f, 0.0f,
+         0.0f,  0.5f, 0.0f,
+    };
+
+    m_triangleVao = engine::Vao::create();
+
+    std::vector<std::unique_ptr<engine::Attribute>> attributes;
+    attributes.push_back(std::make_unique<engine::Vec3Attribute>(0));
+    m_triangleVao->initDataFeed(vertices, sizeof(vertices), GL_STATIC_DRAW, std::move(attributes));
+    m_triangleVao->unbind();
+}
+
 void ColorRaceApp::onUpdate(float deltaTime) {
 
 }
 
 void ColorRaceApp::onRender() {
-
+    m_renderState.apply();
+    m_triangleVao->bind();
+    m_shader->start();
+    glDrawArrays(GL_TRIANGLES, 0, 3);
+    m_shader->stop();
 }
\ No newline at end of file
diff --git a/game/src/ColorRaceApp.h b/game/src/ColorRaceApp.h
index 4806efb..52e51be 100644
--- a/game/src/ColorRaceApp.h
+++ b/game/src/ColorRaceApp.h
@@ -5,6 +5,9 @@
 #ifndef COLORRACE_COLORRACEAPP_H
 #define COLORRACE_COLORRACEAPP_H
 #include "core/Application.h"
+#include "utils/openglWrapper/GLRenderState.h"
+#include "utils/openglWrapper/openglObjects/Vao.h"
+#include "utils/openglWrapper/shader/ShaderProgram.h"
 
 
 class ColorRaceApp : public engine::Application {
@@ -17,9 +20,22 @@ public:
         config.windowTitle = "ColorRace";
         config.clearColor = glm::vec4(0.1f, 0.1f, 0.15f, 1.0f);
         config.vsync = true;
+        config.debugContext = true;
         return config;
     }
-    ColorRaceApp() : Application(makeConfig()) {}
+    ColorRaceApp() : Application(makeConfig()) {
+        m_renderState.depthTesting = false;
+        m_renderState.backfaceCulling = false;
+
+        m_shader = std::make_unique<engine::ShaderProgram>("assets/shaders/basic.vert", "assets/shaders/basic.frag");
+        initTriangle();
+    }
+private:
+    engine::GLRenderState m_renderState;
+    std::unique_ptr<engine::ShaderProgram> m_shader;
+    std::unique_ptr<engine::Vao> m_triangleVao;
+
+    void initTriangle();
 protected:
     void onUpdate(float deltaTime) override;
     void onRender() override;