1 files changed, 36 insertions, 0 deletions
diff --git a/src/effects/sdf_test_effect.cc b/src/effects/sdf_test_effect.cc
new file mode 100644
index 0000000..28b3513
--- /dev/null
+++ b/src/effects/sdf_test_effect.cc
@@ -0,0 +1,36 @@
+// This file is part of the 64k demo project.
+// It implements the SDFTestEffect.
+
+#include "effects/sdf_test_effect.h"
+#include "gpu/gpu.h"
+#include "gpu/shaders.h"
+
+SDFTestEffect::SDFTestEffect(const GpuContext& ctx) : SDFEffect(ctx) {
+  ResourceBinding bindings[] = {
+      {uniforms_.get(), WGPUBufferBindingType_Uniform},
+      {camera_params_.get(), WGPUBufferBindingType_Uniform}};
+  pass_ = gpu_create_render_pass(ctx_.device, ctx_.format,
+                                  sdf_test_shader_wgsl, bindings, 2);
+  pass_.vertex_count = 3;
+}
+
+void SDFTestEffect::render(WGPURenderPassEncoder pass,
+                           const CommonPostProcessUniforms& uniforms) {
+  // Update common uniforms
+  uniforms_.update(ctx_.queue, uniforms);
+
+  // Update camera (simple orbiting camera)
+  const float radius = 5.0f;
+  const float speed = 0.3f;
+  vec3 cam_pos(std::cos(uniforms.time * speed) * radius, 2.0f,
+               std::sin(uniforms.time * speed) * radius);
+  vec3 cam_target(0.0f, 0.0f, 0.0f);
+  vec3 cam_up(0.0f, 1.0f, 0.0f);
+  update_camera(cam_pos, cam_target, cam_up, 0.785398f, 0.1f, 100.0f,
+                uniforms.aspect_ratio);
+
+  // Render
+  wgpuRenderPassEncoderSetPipeline(pass, pass_.pipeline);
+  wgpuRenderPassEncoderSetBindGroup(pass, 0, pass_.bind_group, 0, nullptr);
+  wgpuRenderPassEncoderDraw(pass, pass_.vertex_count, 1, 0, 0);
+}