New Bloom Algorithm

imgui.ini

@@ -27,7 +27,7 @@ DockId=0x00000009,0
 
 [Window][Viewport]
 Pos=387,19
-Size=1533,453
+Size=1533,597
 Collapsed=0
 DockId=0x00000007,0
 
@@ -36,16 +36,16 @@ Size=1280,19
 Collapsed=0
 
 [Window][Performance Info]
-Pos=1672,474
+Pos=1672,618
-Size=248,522
+Size=248,315
 Collapsed=0
 DockId=0x00000003,0
 
 [Window][Console]
-Pos=387,474
+Pos=387,926
-Size=1283,703
+Size=1283,251
 Collapsed=0
-DockId=0x00000005,1
+DockId=0x0000000C,0
 
 [Window][Tilemap Editor]
 Pos=265,19
@@ -54,32 +54,32 @@ Collapsed=0
 DockId=0x00000007,1
 
 [Window][Profiler]
-Pos=387,474
+Pos=387,618
-Size=1283,703
+Size=1283,306
 Collapsed=0
-DockId=0x00000005,0
+DockId=0x0000000B,0
 
 [Window][Profiler Timeline]
 Pos=265,69
 Size=623,651
 Collapsed=0
-DockId=0x00000005,1
+DockId=0x0000000B,1
 
 [Window][Profiler (Unity Style)]
 Pos=265,430
 Size=623,290
 Collapsed=0
-DockId=0x00000005,1
+DockId=0x0000000B,1
 
 [Window][Profiler Timeline View]
 Pos=265,526
 Size=1263,651
 Collapsed=0
-DockId=0x00000005,1
+DockId=0x0000000B,1
 
 [Window][Color Correction]
-Pos=1672,998
+Pos=1672,935
-Size=248,179
+Size=248,242
 Collapsed=0
 DockId=0x00000004,0
 
@@ -89,10 +89,12 @@ DockSpace         ID=0x11111111 Window=0x1BBC0F80 Pos=0,19 Size=1920,1158 Split=
     DockNode      ID=0x00000009 Parent=0x00000001 SizeRef=385,623 HiddenTabBar=1 Selected=0x12EF0F59
     DockNode      ID=0x0000000A Parent=0x00000001 SizeRef=385,533 HiddenTabBar=1 Selected=0x36DC96AB
   DockNode        ID=0x00000002 Parent=0x11111111 SizeRef=1533,701 Split=Y Selected=0xC450F867
-    DockNode      ID=0x00000007 Parent=0x00000002 SizeRef=606,453 CentralNode=1 HiddenTabBar=1 Selected=0xC450F867
+    DockNode      ID=0x00000007 Parent=0x00000002 SizeRef=606,597 CentralNode=1 HiddenTabBar=1 Selected=0xC450F867
-    DockNode      ID=0x00000008 Parent=0x00000002 SizeRef=606,703 Split=X Selected=0x9B5D3198
+    DockNode      ID=0x00000008 Parent=0x00000002 SizeRef=606,559 Split=X Selected=0x9B5D3198
-      DockNode    ID=0x00000005 Parent=0x00000008 SizeRef=1283,481 Selected=0xEA83D666
+      DockNode    ID=0x00000005 Parent=0x00000008 SizeRef=1283,481 Split=Y Selected=0x9B5D3198
+        DockNode  ID=0x0000000B Parent=0x00000005 SizeRef=1283,306 HiddenTabBar=1 Selected=0x9B5D3198
+        DockNode  ID=0x0000000C Parent=0x00000005 SizeRef=1283,251 HiddenTabBar=1 Selected=0xEA83D666
       DockNode    ID=0x00000006 Parent=0x00000008 SizeRef=248,481 Split=Y Selected=0x3FC1A724
-        DockNode  ID=0x00000003 Parent=0x00000006 SizeRef=226,522 Selected=0x3FC1A724
+        DockNode  ID=0x00000003 Parent=0x00000006 SizeRef=226,315 HiddenTabBar=1 Selected=0x3FC1A724
-        DockNode  ID=0x00000004 Parent=0x00000006 SizeRef=226,179 HiddenTabBar=1 Selected=0xA873C17F
+        DockNode  ID=0x00000004 Parent=0x00000006 SizeRef=226,242 HiddenTabBar=1 Selected=0xA873C17F
 

remake/build.log

@@ -0,0 +1,3 @@
+[COMPILE] g++ -std=c++20 -Wall -g -Isrc/include -Isrc/include/lua -Isrc/vendor -Isrc/vendor/imgui -Isrc/vendor/box2d -IC:/msys64/mingw64/include -IC:\msys64\mingw64\lib\libyaml-cpp.a -Isrc\vendor\imgui -MMD -MP -c src\src\Renderer.cpp -o src\build\Renderer.o
+[LINK] g++ src\build\Engine.o src\build\main.o src\build\Renderer.o src\build\Components\CameraComponent.o src\build\Components\LightComponent.o src\build\Components\PhysicsComponent.o src\build\Components\ScriptComponent.o src\build\Components\SpriteComponent.o src\build\Components\TextComonent.o src\build\Components\TilemapComponent.o src\build\Entitys\Object.o src\build\utils\EngineConfig.o src\build\utils\ExceptionHandler.o src\build\utils\FileDialog.o src\build\utils\GameObjectsList.o src\build\utils\Logging.o src\build\utils\Profiler.o src\build\utils\Shader.o src\build\utils\UID.o src\build\utils\utils.o src\build\lapi.o src\build\lauxlib.o src\build\lbaselib.o src\build\lcode.o src\build\lcorolib.o src\build\lctype.o src\build\ldblib.o src\build\ldebug.o src\build\ldo.o src\build\ldump.o src\build\lfunc.o src\build\lgc.o src\build\linit.o src\build\liolib.o src\build\llex.o src\build\lmathlib.o src\build\lmem.o src\build\loadlib.o src\build\lobject.o src\build\lopcodes.o src\build\loslib.o src\build\lparser.o src\build\lstate.o src\build\lstring.o src\build\lstrlib.o src\build\ltable.o src\build\ltablib.o src\build\ltm.o src\build\lua.o src\build\luac.o src\build\lundump.o src\build\lutf8lib.o src\build\lvm.o src\build\lzio.o src\build\imgui.o src\build\imgui_demo.o src\build\imgui_draw.o src\build\imgui_impl_glfw.o src\build\imgui_impl_opengl3.o src\build\imgui_tables.o src\build\imgui_widgets.o src\build\aabb.o src\build\arena_allocator.o src\build\array.o src\build\bitset.o src\build\body.o src\build\broad_phase.o src\build\constraint_graph.o src\build\contact.o src\build\contact_solver.o src\build\core.o src\build\distance.o src\build\distance_joint.o src\build\dynamic_tree.o src\build\geometry.o src\build\hull.o src\build\id_pool.o src\build\island.o src\build\joint.o src\build\manifold.o src\build\math_functions.o src\build\motor_joint.o src\build\mouse_joint.o src\build\mover.o src\build\prismatic_joint.o src\build\revolute_joint.o src\build\sensor.o src\build\shape.o src\build\solver.o src\build\solver_set.o src\build\table.o src\build\timer.o src\build\types.o src\build\weld_joint.o src\build\wheel_joint.o src\build\world.o -o src\build\app.exe -LC:\msys64\mingw64\lib -lglfw3 -lglew32 -lopengl32 -lgdi32 -lyaml-cpp -lcomdlg32 -lssl -lcrypto
+[RUN] Executed app.exe successfully.

src/assets/scenes/lighting_test_2.cene

@@ -1,6 +1,6 @@
 engine_version: 0.1.0
 scene_name: lighting_test_2
-scene_hash: 59f49b4319d714200de64e90f576e787dcc9aa5d0dfc217d78e87f8332be626f
+scene_hash: c084720adfdfb7fefd6c0c6c1654d18bc2245da4d222165c332b57dcc8d78c12
 format_version: 1
 objects:
   - name: Tiles
@@ -67,7 +67,7 @@ objects:
       - name: Logo
         uid: c4ce6f16dfb347b0ae0ac67f5881b243
         id: 8
-        position: [2104, 56]
+        position: [3181, 56]
         rotation: 0
         layer: 0
         visable: true
@@ -80,7 +80,7 @@ objects:
       - name: Carbooon Fobar
         uid: 5ea269572751401da6d86519d3513b7d
         id: 9
-        position: [2048, 3070]
+        position: [4087.8999, 3070]
         rotation: 0
         layer: 1
         visable: true
@@ -93,7 +93,7 @@ objects:
       - name: Carbooon Fobar 2
         uid: a36b71937ba349bd8e6414f75be9ee16
         id: 10
-        position: [0, 3070]
+        position: [-7.69999981, 3070]
         rotation: 0
         layer: 0
         visable: true
@@ -106,7 +106,7 @@ objects:
   - name: Lights
     uid: 051b338a725a4076ad53ad8fa00c5f4e
     id: 12
-    position: [-556, 951]
+    position: [-560, 1118]
     rotation: 0
     layer: 0
     visable: true
@@ -115,7 +115,7 @@ objects:
       - name: Red
         uid: 6afde2dd47aa4557b6afb1a607c99dc8
         id: 13
-        position: [1113.06287, 1516.00391]
+        position: [1079.61902, 527.103088]
         rotation: 0
         layer: 2
         visable: true
@@ -133,7 +133,7 @@ objects:
       - name: Green
         uid: 0f950d76d24b4dc18f54cab2c3aaaf9a
         id: 14
-        position: [553.380676, 855.128784]
+        position: [1426.51587, 1320.61597]
         rotation: 0
         layer: 2
         visable: true
@@ -151,7 +151,7 @@ objects:
       - name: Blue
         uid: 09f722f51c7c4b0f98de3a0a16d127c4
         id: 15
-        position: [1405.5564, 700.86731]
+        position: [565.865173, 1224.28101]
         rotation: 0
         layer: 2
         visable: true
@@ -212,4 +212,7 @@ objects:
 color_correction:
   brightness: 2
   saturation: 2
-  gamma: 0.610000014
+  gamma: 1.05999994
+  bloom: true
+  intensity: 1.21000004
+  threshold: 0.25

src/assets/shaders/bloom.frag

@@ -0,0 +1,39 @@
+#version 330 core
+in vec2 vUV;
+out vec4 FragColor;
+
+uniform sampler2D uTex;
+uniform vec2 uTexelSize;
+uniform float uThreshold;
+uniform float uIntensity;
+
+const float weights[5] = float[](0.204164, 0.304005, 0.093913, 0.010381, 0.000336);
+
+vec3 blur(vec2 uv, vec2 dir) {
+    vec3 sum = vec3(0.0);
+    for (int i = -4; i <= 4; ++i) {
+        int index = abs(i);
+        vec2 offset = dir * float(i);
+        vec3 col = texture(uTex, uv + offset).rgb;
+
+        float brightness = dot(col, vec3(0.2126, 0.7152, 0.0722)); // luminance
+        float mask = smoothstep(uThreshold, uThreshold + 0.05, brightness);
+
+        sum += col * mask * weights[index];
+    }
+    return sum;
+}
+
+void main() {
+    vec3 color = texture(uTex, vUV).rgb;
+
+    // Blur only bright pixels (thresholded inside blur)
+    vec3 blurH = blur(vUV, vec2(uTexelSize.x, 0.0));
+    vec3 blurV = blur(vUV, vec2(0.0, uTexelSize.y));
+    vec3 bloom = (blurH + blurV) * 0.5 * uIntensity;
+
+    // Final composition
+    vec3 finalColor = color + bloom;
+
+    FragColor = vec4(finalColor, 1.0);
+}

src/assets/shaders/bloom.vert

@@ -0,0 +1,10 @@
+#version 330 core
+layout(location = 0) in vec2 aPos;
+layout(location = 1) in vec2 aUV;
+
+out vec2 vUV;
+
+void main() {
+    vUV = aUV;
+    gl_Position = vec4(aPos.xy, 0.0, 1.0);
+}

src/assets/shaders/blur.frag

@@ -0,0 +1,20 @@
+#version 330 core
+in vec2 vUV;
+out vec4 FragColor;
+
+uniform sampler2D uTex;
+uniform vec2 uDirection;
+
+const float weights[5] = float[](0.204164, 0.304005, 0.093913, 0.010381, 0.000336);
+
+void main() {
+    vec3 result = texture(uTex, vUV).rgb * weights[0];
+
+    for (int i = 1; i < 5; ++i) {
+        vec2 offset = uDirection * float(i);
+        result += texture(uTex, vUV + offset).rgb * weights[i];
+        result += texture(uTex, vUV - offset).rgb * weights[i];
+    }
+
+    FragColor = vec4(result, 1.0);
+}

src/assets/shaders/composite.frag

@@ -0,0 +1,14 @@
+
+#version 330 core
+in vec2 vUV;
+out vec4 FragColor;
+
+uniform sampler2D uScene;
+uniform sampler2D uBloom;
+uniform float uIntensity;
+
+void main() {
+    vec3 sceneColor = texture(uScene, vUV).rgb;
+    vec3 bloomColor = texture(uBloom, vUV).rgb * uIntensity;
+    FragColor = vec4(sceneColor + bloomColor, 1.0);
+}

src/assets/shaders/extract.frag

@@ -0,0 +1,13 @@
+#version 330 core
+in vec2 vUV;
+out vec4 FragColor;
+
+uniform sampler2D uScene;
+uniform float uThreshold;
+
+void main() {
+    vec3 color = texture(uScene, vUV).rgb;
+    float brightness = dot(color, vec3(0.2126, 0.7152, 0.0722));
+    float mask = smoothstep(uThreshold, uThreshold + 0.05, brightness);
+    FragColor = vec4(color * mask, 1.0);
+}

src/assets/shaders/fullscreen.vert

@@ -0,0 +1,10 @@
+#version 330 core
+layout(location = 0) in vec2 aPos;
+layout(location = 1) in vec2 aUV;
+
+out vec2 vUV;
+
+void main() {
+    vUV = aUV;
+    gl_Position = vec4(aPos.xy, 0.0, 1.0);
+}

src/src/Engine.cpp

@@ -307,7 +307,12 @@ void ShowColorCorrectionWindow()
     changed |= ImGui::SliderFloat("Saturation", &cc->saturation, 0.0f, 2.0f, "%.2f");
     changed |= ImGui::SliderFloat("Gamma", &cc->gamma, 0.1f, 4.0f, "%.2f");
 
-    ImGui::Spacing();
+    ImGui::SeparatorText("Bloom");
+
+
+    changed |= ImGui::Checkbox("Enable Bloom", &cc->bloom);
+    changed |= ImGui::SliderFloat("Threshold", &cc->threshold, 0.0f, 2.0f, "%.2f");
+    changed |= ImGui::SliderFloat("Intensity", &cc->intensity, 0.0f, 4.0f, "%.2f");
 
     if (ImGui::Button("Reset to Default"))
     {
@@ -318,6 +323,7 @@ void ShowColorCorrectionWindow()
     ImGui::End();
 }
 
+
 void Engine::Init()
 {
 
@@ -404,7 +410,6 @@ void Engine::Init()
     //    }
     //}
 
-
     Logger::LogVerbose("Resverving Objects");
 
     m_toDraw.reserve(1024);
@@ -1059,7 +1064,7 @@ void Engine::Run()
         profiler.EndEngineSection();
 
         // Display render target texture
-        GLuint texID = Renderer::GetRenderTexture();
+        GLuint texID = Renderer::GetFinalTexture();
         ImGui::Image((ImTextureID)(uintptr_t)texID, size, ImVec2(0, 1), ImVec2(1, 0));
 
         ImGui::End();
@@ -1267,6 +1272,11 @@ void Engine::SaveScene(const std::string &path)
     out << YAML::Key << "brightness" << YAML::Value << Renderer::GetColorCorrection()->brightness;
     out << YAML::Key << "saturation" << YAML::Value << Renderer::GetColorCorrection()->saturation;
     out << YAML::Key << "gamma" << YAML::Value << Renderer::GetColorCorrection()->gamma;
+
+    out << YAML::Key << "bloom" << YAML::Value << Renderer::GetColorCorrection()->bloom;
+    out << YAML::Key << "intensity" << YAML::Value << Renderer::GetColorCorrection()->intensity;
+    out << YAML::Key << "threshold" << YAML::Value << Renderer::GetColorCorrection()->threshold;
+
     out << YAML::EndMap;
 
     out << YAML::EndMap;
@@ -1327,6 +1337,13 @@ void Engine::LoadScene(const std::string &path)
                 cc->saturation = data["saturation"].as<float>();
             if (data["gamma"])
                 cc->gamma = data["gamma"].as<float>();
+
+            if (data["bloom"])
+                cc->bloom = data["bloom"].as<bool>();
+            if (data["intensity"])
+                cc->intensity = data["intensity"].as<float>();
+            if (data["threshold"])
+                cc->threshold = data["threshold"].as<float>();
         }
     }
 
@@ -1348,6 +1365,11 @@ void Engine::SaveState()
     out << YAML::Key << "brightness" << YAML::Value << Renderer::GetColorCorrection()->brightness;
     out << YAML::Key << "saturation" << YAML::Value << Renderer::GetColorCorrection()->saturation;
     out << YAML::Key << "gamma" << YAML::Value << Renderer::GetColorCorrection()->gamma;
+
+    out << YAML::Key << "bloom" << YAML::Value << Renderer::GetColorCorrection()->bloom;
+    out << YAML::Key << "intensity" << YAML::Value << Renderer::GetColorCorrection()->intensity;
+    out << YAML::Key << "threshold" << YAML::Value << Renderer::GetColorCorrection()->threshold;
+
     out << YAML::EndMap;
 
     out << YAML::EndMap;
@@ -1398,6 +1420,13 @@ void Engine::LoadState()
                 cc->saturation = data["saturation"].as<float>();
             if (data["gamma"])
                 cc->gamma = data["gamma"].as<float>();
+
+            if (data["bloom"])
+                cc->bloom = data["bloom"].as<bool>();
+            if (data["intensity"])
+                cc->intensity = data["intensity"].as<float>();
+            if (data["threshold"])
+                cc->threshold = data["threshold"].as<float>();
         }
     }
 

src/src/Renderer.cpp

@@ -17,6 +17,16 @@
 
 static Shader spriteShader;
 static Shader unlitShader;
+static Shader tilemapShader;
+
+static Shader extractShader;
+static Shader blurShader;
+static Shader compositeShader;
+
+static GLuint extractFBO, extractTexture;
+static GLuint blurFBO_H, blurTexture_H;
+static GLuint blurFBO_V, blurTexture_V;
+static GLuint bloomFBO, bloomTexture;
 
 GLuint Renderer::fbo = 0;
 GLuint Renderer::textureColorBuffer = 0;
@@ -37,16 +47,17 @@ GLuint Renderer::s_ClusterSSBO = 0;
 int Renderer::s_ClusterCols = 0;
 int Renderer::s_ClusterRows = 0;
 
-static Shader tilemapShader;
+GLuint Renderer::bloomFBO = 0;
+GLuint Renderer::bloomTexture = 0;
 
 void Renderer::InitQuad()
 {
     float vertices[] = {
         // pos      // uv
-        0.f, 0.f, 0.f, 0.f,
+        -1.f, -1.f, 0.f, 0.f,
-        1.f, 0.f, 1.f, 0.f,
+        1.f, -1.f, 1.f, 0.f,
         1.f, 1.f, 1.f, 1.f,
-        0.f, 1.f, 0.f, 1.f};
+        -1.f, 1.f, 0.f, 1.f};
 
     glGenVertexArrays(1, &quadVAO);
     glBindVertexArray(quadVAO);
@@ -89,14 +100,60 @@ void Renderer::Init()
 
     // Load lit shader
 
+    // Core renderers
     spriteShader.LoadFromFile("src/assets/shaders/sprite.vert", "src/assets/shaders/sprite.frag");
-    // Load unlit shader
     unlitShader.LoadFromFile("src/assets/shaders/unlit.vert", "src/assets/shaders/unlit.frag");
+    tilemapShader.LoadFromFile("src/assets/shaders/tilemap.vert", "src/assets/shaders/tilemap.frag");
+
+    // Bloom pipeline
+    extractShader.LoadFromFile("src/assets/shaders/fullscreen.vert", "src/assets/shaders/extract.frag");
+    blurShader.LoadFromFile("src/assets/shaders/fullscreen.vert", "src/assets/shaders/blur.frag");
+    compositeShader.LoadFromFile("src/assets/shaders/fullscreen.vert", "src/assets/shaders/composite.frag");
 
     SetColorCorrection(std::make_unique<ColorCorrection>());
 
     glGenBuffers(1, &s_ClusterSSBO);
 
+    // Bloom textures and framebuffers
+    glGenFramebuffers(1, &extractFBO);
+    glBindFramebuffer(GL_FRAMEBUFFER, extractFBO);
+    glGenTextures(1, &extractTexture);
+    glBindTexture(GL_TEXTURE_2D, extractTexture);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, width, height, 0, GL_RGBA, GL_FLOAT, nullptr);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, extractTexture, 0);
+
+    glGenFramebuffers(1, &blurFBO_H);
+    glBindFramebuffer(GL_FRAMEBUFFER, blurFBO_H);
+    glGenTextures(1, &blurTexture_H);
+    glBindTexture(GL_TEXTURE_2D, blurTexture_H);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, width, height, 0, GL_RGBA, GL_FLOAT, nullptr);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, blurTexture_H, 0);
+
+    glGenFramebuffers(1, &blurFBO_V);
+    glBindFramebuffer(GL_FRAMEBUFFER, blurFBO_V);
+    glGenTextures(1, &blurTexture_V);
+    glBindTexture(GL_TEXTURE_2D, blurTexture_V);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, width, height, 0, GL_RGBA, GL_FLOAT, nullptr);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, blurTexture_V, 0);
+
+    // Final composite target
+    glGenFramebuffers(1, &bloomFBO);
+    glBindFramebuffer(GL_FRAMEBUFFER, bloomFBO);
+    glGenTextures(1, &bloomTexture);
+    glBindTexture(GL_TEXTURE_2D, bloomTexture);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, width, height, 0, GL_RGBA, GL_FLOAT, nullptr);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, bloomTexture, 0);
+
+    glBindFramebuffer(GL_FRAMEBUFFER, 0);
+
     // Create a 1x1 flat normal map (RGB: 128,128,255)
     unsigned char flatNormal[3] = {128, 128, 255};
     glGenTextures(1, &defaultNormalMap);
@@ -155,15 +212,26 @@ void Renderer::UpdateClusterLights()
 
 void Renderer::Resize(int w, int h)
 {
-
     if (w == width && h == height)
         return;
     width = w;
     height = h;
 
+    // Resize all textures
     glBindTexture(GL_TEXTURE_2D, textureColorBuffer);
-    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0,
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
-                 GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
+
+    glBindTexture(GL_TEXTURE_2D, extractTexture);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, width, height, 0, GL_RGBA, GL_FLOAT, nullptr);
+
+    glBindTexture(GL_TEXTURE_2D, blurTexture_H);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, width, height, 0, GL_RGBA, GL_FLOAT, nullptr);
+
+    glBindTexture(GL_TEXTURE_2D, blurTexture_V);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, width, height, 0, GL_RGBA, GL_FLOAT, nullptr);
+
+    glBindTexture(GL_TEXTURE_2D, bloomTexture);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, width, height, 0, GL_RGBA, GL_FLOAT, nullptr);
 
     glBindRenderbuffer(GL_RENDERBUFFER, rbo);
     glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height);
@@ -189,6 +257,10 @@ void Renderer::Begin()
 
 void Renderer::End()
 {
+
+    {
+    }
+
     glBindFramebuffer(GL_FRAMEBUFFER, 0);
 }
 
@@ -491,6 +563,75 @@ void Renderer::DrawGizmoCircle(
     glEnd();
 }
 
+
+
+
+GLuint Renderer::GetFinalTexture()
+{
+    PROFILE_SCOPE("Renderer::GetFinalTexture");
+
+    GLuint sceneTex = GetRenderTexture();
+
+    if (!s_ColorCorrection || !s_ColorCorrection->bloom)
+        return sceneTex;
+
+    // 1. Extract bright regions
+    glBindFramebuffer(GL_FRAMEBUFFER, extractFBO);
+    glViewport(0, 0, width, height);
+    glClearColor(0, 0, 0, 1);
+    glClear(GL_COLOR_BUFFER_BIT);
+
+    extractShader.Use();
+    extractShader.SetInt("uScene", 0);
+    extractShader.SetFloat("uThreshold", s_ColorCorrection->threshold);
+
+    glActiveTexture(GL_TEXTURE0);
+    glBindTexture(GL_TEXTURE_2D, sceneTex);
+
+    glBindVertexArray(quadVAO);
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+    // 2. Horizontal blur
+    glBindFramebuffer(GL_FRAMEBUFFER, blurFBO_H);
+    glClear(GL_COLOR_BUFFER_BIT);
+
+    blurShader.Use();
+    blurShader.SetInt("uTex", 0);
+    blurShader.SetVec2("uDirection", glm::vec2(1.0f / width, 0.0f));
+
+    glBindTexture(GL_TEXTURE_2D, extractTexture);
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+    // 3. Vertical blur
+    glBindFramebuffer(GL_FRAMEBUFFER, blurFBO_V);
+    glClear(GL_COLOR_BUFFER_BIT);
+
+    blurShader.SetVec2("uDirection", glm::vec2(0.0f, 1.0f / height));
+    glBindTexture(GL_TEXTURE_2D, blurTexture_H);
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+    // 4. Final composite
+    glBindFramebuffer(GL_FRAMEBUFFER, bloomFBO);
+    glClear(GL_COLOR_BUFFER_BIT);
+
+    compositeShader.Use();
+    compositeShader.SetInt("uScene", 0);
+    compositeShader.SetInt("uBloom", 1);
+    compositeShader.SetFloat("uIntensity", s_ColorCorrection->intensity);
+
+    glActiveTexture(GL_TEXTURE0);
+    glBindTexture(GL_TEXTURE_2D, sceneTex);
+    glActiveTexture(GL_TEXTURE1);
+    glBindTexture(GL_TEXTURE_2D, blurTexture_V);
+
+    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+    glBindFramebuffer(GL_FRAMEBUFFER, 0);
+    return bloomTexture;
+}
+
+
+
 GLuint Renderer::GetRenderTexture()
 {
     return textureColorBuffer;

src/src/Renderer.h

@@ -10,26 +10,35 @@
 #include "utils/Shader.h"
 #include "utils/Profiler.h"
 
-struct ColorCorrection {
+struct ColorCorrection
+{
     float brightness = 1.0f;
     float saturation = 1.0f;
     float gamma = 1.0f;
 
-    void Upload(Shader& shader) const {
+    bool bloom = true;
+    float threshold = 0.2f;
+    float intensity = 1.2f;
+
+
+    void Upload(Shader &shader) const
+    {
         shader.SetFloat("uBrightness", brightness);
         shader.SetFloat("uSaturation", saturation);
         shader.SetFloat("uGamma", gamma);
     }
 };
 
-struct Light {
+struct Light
+{
     glm::vec2 screenPos;
     glm::vec3 color;
     float intensity;
     float radius;
 };
 
-class Renderer {
+class Renderer
+{
 public:
     static void Init();
     static void Resize(int w, int h);
@@ -55,6 +64,8 @@ public:
     static void SetColorCorrection(std::unique_ptr<ColorCorrection> correction);
     static ColorCorrection *GetColorCorrection();
 
+    static GLuint GetFinalTexture();
+
     // Clustered lighting
     static void UpdateClusterLights(); // Call once per frame after all lights added
 
@@ -77,7 +88,8 @@ private:
     static constexpr int CLUSTER_SIZE = 16;
     static constexpr int MAX_LIGHTS_PER_CLUSTER = 32;
 
-    struct Cluster {
+    struct Cluster
+    {
         std::vector<int> lightIndices;
     };
 
@@ -86,5 +98,6 @@ private:
     static int s_ClusterCols;
     static int s_ClusterRows;
 
-    
+    static GLuint bloomFBO;
+    static GLuint bloomTexture;
 };