fix: port Hybrid3D effect to sequence v2 architecture

Hybrid3D was calling Renderer3D::render() which creates its own command
encoder, bypassing the sequence system. Now uses renderer_.draw() with
the passed encoder.

Also adds texture blit support for RotatingCube compositing.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

1 files changed, 26 insertions, 2 deletions

diff --git a/src/effects/hybrid3_d_effect.cc b/src/effects/hybrid3_d_effect.cc
index 0e44853..c13c1e9 100644
--- a/src/effects/hybrid3_d_effect.cc
+++ b/src/effects/hybrid3_d_effect.cc
@@ -4,6 +4,7 @@
 #include "util/fatal_error.h"
 
 #include "effects/hybrid3_d_effect.h"
+#include "gpu/gpu.h"
 #include <cmath>
 
 Hybrid3D::Hybrid3D(const GpuContext& ctx,
@@ -113,6 +114,29 @@ void Hybrid3D::render(WGPUCommandEncoder encoder,
   WGPUTextureView color_view = nodes.get_view(output_nodes_[0]);
   WGPUTextureView depth_view = nodes.get_view(depth_node_);
 
-  // Render 3D scene
-  renderer_.render(scene_, camera_, params.time, color_view, depth_view);
+  // Render 3D scene using sequence encoder
+  WGPURenderPassColorAttachment color_attachment = {};
+#if !defined(DEMO_CROSS_COMPILE_WIN32)
+  color_attachment.depthSlice = WGPU_DEPTH_SLICE_UNDEFINED;
+#endif
+  color_attachment.view = color_view;
+  color_attachment.loadOp = WGPULoadOp_Clear;
+  color_attachment.storeOp = WGPUStoreOp_Store;
+  color_attachment.clearValue = {0.05f, 0.05f, 0.05f, 1.0f};
+
+  WGPURenderPassDepthStencilAttachment depth_attachment = {};
+  depth_attachment.view = depth_view;
+  depth_attachment.depthLoadOp = WGPULoadOp_Clear;
+  depth_attachment.depthStoreOp = WGPUStoreOp_Store;
+  depth_attachment.depthClearValue = 1.0f;
+
+  WGPURenderPassDescriptor pass_desc = {};
+  pass_desc.colorAttachmentCount = 1;
+  pass_desc.colorAttachments = &color_attachment;
+  pass_desc.depthStencilAttachment = &depth_attachment;
+
+  WGPURenderPassEncoder pass = wgpuCommandEncoderBeginRenderPass(encoder, &pass_desc);
+  renderer_.draw(pass, scene_, camera_, params.time);
+  wgpuRenderPassEncoderEnd(pass);
+  wgpuRenderPassEncoderRelease(pass);
 }