feat: add bloom and blur

1 files changed, 19 insertions, 0 deletions

diff --git a/src/engine/engine.cpp b/src/engine/engine.cpp
index 435b3e0..9a88e9e 100644
--- a/src/engine/engine.cpp
+++ b/src/engine/engine.cpp
@@ -34,6 +34,7 @@ namespace Donut
 
         m_shader_program  = Ref<Shader>(Shader::create("assets/shaders/compute_texture_quad.glsl"));
         m_compute_program = create_compute_program("assets/shaders/geodesic.glsl");
+        m_blur_shader     = Ref<Shader>(Shader::create("assets/shaders/blur.glsl"));
         
         m_camera_ubo = UniformBuffer::create(128, 1);
         m_disk_ubo   = UniformBuffer::create(sizeof(float) * 5, 2);
@@ -96,6 +97,24 @@ namespace Donut
         RenderCommand::enable_depth_test();
     }
 
+    void Engine::draw_blur_pass()
+    {
+        RenderCommand::set_viewport(0, 0, m_width, m_height);
+        
+        m_blur_shader->bind();
+        m_quad_vao->bind();
+
+        m_texture->bind(0);
+        m_blur_shader->set_int("u_ScreenTexture", 0);
+        m_blur_shader->set_float2("u_Resolution", glm::vec2(m_width, m_height));
+        m_blur_shader->set_float("u_BlurStrength", m_blur_strength);
+        m_blur_shader->set_float("u_GlowIntensity", m_glow_intensity);
+
+        RenderCommand::disable_depth_test();
+        RenderCommand::draw_arrays(6);
+        RenderCommand::enable_depth_test();
+    }
+
     void Engine::dispatch_compute(const Camera& cam)
     {
         int cw = get_compute_width();