1 files changed, 93 insertions, 0 deletions
diff --git a/src/gpu/headless_gpu.cc b/src/gpu/headless_gpu.cc
new file mode 100644
index 0000000..1a649d3
--- /dev/null
+++ b/src/gpu/headless_gpu.cc
@@ -0,0 +1,93 @@
+// Headless GPU implementation - functional stubs for testing
+// Workspace: demo (shared across all workspaces)
+
+#if defined(DEMO_HEADLESS)
+
+#include "gpu.h"
+#include "platform/stub_types.h"
+#include <stdio.h>
+
+static bool g_initialized = false;
+
+GpuBuffer gpu_create_buffer(WGPUDevice device, size_t size, uint32_t usage,
+                            const void* data) {
+  (void)device;
+  (void)size;
+  (void)usage;
+  (void)data;
+  return {nullptr, 0};
+}
+
+RenderPass gpu_create_render_pass(WGPUDevice device, WGPUTextureFormat format,
+                                  const char* shader_code,
+                                  ResourceBinding* bindings, int num_bindings) {
+  (void)device;
+  (void)format;
+  (void)shader_code;
+  (void)bindings;
+  (void)num_bindings;
+  return {nullptr, nullptr, 0, 0};
+}
+
+ComputePass gpu_create_compute_pass(WGPUDevice device, const char* shader_code,
+                                    ResourceBinding* bindings,
+                                    int num_bindings) {
+  (void)device;
+  (void)shader_code;
+  (void)bindings;
+  (void)num_bindings;
+  return {nullptr, nullptr, 0, 0, 0};
+}
+
+void gpu_init(PlatformState* platform_state) {
+  (void)platform_state;
+  if (!g_initialized) {
+    printf("[headless] GPU initialized\n");
+    g_initialized = true;
+  }
+}
+
+void gpu_draw(float audio_peak, float aspect_ratio, float time, float beat) {
+  (void)audio_peak;
+  (void)aspect_ratio;
+  (void)time;
+  (void)beat;
+}
+
+void gpu_resize(int width, int height) {
+  (void)width;
+  (void)height;
+}
+
+void gpu_shutdown() {
+  if (g_initialized) {
+    printf("[headless] GPU shutdown\n");
+    g_initialized = false;
+  }
+}
+
+const GpuContext* gpu_get_context() {
+  static GpuContext ctx = {nullptr, nullptr, WGPUTextureFormat_BGRA8Unorm};
+  return &ctx;
+}
+
+MainSequence* gpu_get_main_sequence() {
+  return nullptr;
+}
+
+#if !defined(STRIP_ALL)
+void gpu_simulate_until(float time, float bpm) {
+  (void)time;
+  (void)bpm;
+}
+
+void gpu_add_custom_effect(Effect* effect, float start_time, float end_time,
+                           int priority) {
+  (void)effect;
+  (void)start_time;
+  (void)end_time;
+  (void)priority;
+}
+#endif
+
+#endif // DEMO_HEADLESS