1 files changed, 81 insertions, 0 deletions
diff --git a/src/effects/passthrough_effect.cc b/src/effects/passthrough_effect.cc
new file mode 100644
index 0000000..ba98657
--- /dev/null
+++ b/src/effects/passthrough_effect.cc
@@ -0,0 +1,81 @@
+// Passthrough effect v2 implementation
+
+#include "effects/passthrough_effect.h"
+#include "gpu/post_process_helper.h"
+#include "gpu/shaders.h"
+
+PassthroughEffect::PassthroughEffect(const GpuContext& ctx,
+                                         const std::vector<std::string>& inputs,
+                                         const std::vector<std::string>& outputs)
+    : Effect(ctx, inputs, outputs), pipeline_(nullptr), bind_group_(nullptr),
+      sampler_(nullptr) {
+  // Init uniform buffer
+  uniforms_buffer_.init(ctx_.device);
+  // Create pipeline (simple version without effect params)
+  pipeline_ = create_post_process_pipeline_simple(ctx_.device, WGPUTextureFormat_RGBA8Unorm,
+                                                  passthrough_v2_shader_wgsl);
+
+  // Create sampler
+  WGPUSamplerDescriptor sampler_desc = {};
+  sampler_desc.addressModeU = WGPUAddressMode_ClampToEdge;
+  sampler_desc.addressModeV = WGPUAddressMode_ClampToEdge;
+  sampler_desc.addressModeW = WGPUAddressMode_ClampToEdge;
+  sampler_desc.magFilter = WGPUFilterMode_Linear;
+  sampler_desc.minFilter = WGPUFilterMode_Linear;
+  sampler_desc.mipmapFilter = WGPUMipmapFilterMode_Nearest;
+  sampler_desc.maxAnisotropy = 1;
+  sampler_ = wgpuDeviceCreateSampler(ctx_.device, &sampler_desc);
+}
+
+void PassthroughEffect::render(WGPUCommandEncoder encoder,
+                                 const UniformsSequenceParams& params,
+                                 NodeRegistry& nodes) {
+  // Get input/output views
+  WGPUTextureView input_view = nodes.get_view(input_nodes_[0]);
+  WGPUTextureView output_view = nodes.get_view(output_nodes_[0]);
+
+  // Update uniforms
+  uniforms_buffer_.update(ctx_.queue, params);
+
+  // Manually create bind group with only 3 entries (no effect params needed)
+  WGPUBindGroupEntry entries[3] = {};
+  entries[0].binding = PP_BINDING_SAMPLER;
+  entries[0].sampler = sampler_;
+  entries[1].binding = PP_BINDING_TEXTURE;
+  entries[1].textureView = input_view;
+  entries[2].binding = PP_BINDING_UNIFORMS;
+  entries[2].buffer = uniforms_buffer_.get().buffer;
+  entries[2].size = sizeof(UniformsSequenceParams);
+
+  WGPUBindGroupDescriptor bg_desc = {};
+  bg_desc.layout = wgpuRenderPipelineGetBindGroupLayout(pipeline_, 0);
+  bg_desc.entryCount = 3;
+  bg_desc.entries = entries;
+
+  if (bind_group_) {
+    wgpuBindGroupRelease(bind_group_);
+  }
+  bind_group_ = wgpuDeviceCreateBindGroup(ctx_.device, &bg_desc);
+
+  // Render pass
+  WGPURenderPassColorAttachment color_attachment = {
+    .view = output_view,
+#if !defined(DEMO_CROSS_COMPILE_WIN32)
+    .depthSlice = WGPU_DEPTH_SLICE_UNDEFINED,
+#endif
+    .loadOp = WGPULoadOp_Clear,
+    .storeOp = WGPUStoreOp_Store,
+    .clearValue = {0.0, 0.0, 0.0, 1.0}
+  };
+
+  WGPURenderPassDescriptor pass_desc = {};
+  pass_desc.colorAttachmentCount = 1;
+  pass_desc.colorAttachments = &color_attachment;
+
+  WGPURenderPassEncoder pass = wgpuCommandEncoderBeginRenderPass(encoder, &pass_desc);
+  wgpuRenderPassEncoderSetPipeline(pass, pipeline_);
+  wgpuRenderPassEncoderSetBindGroup(pass, 0, bind_group_, 0, nullptr);
+  wgpuRenderPassEncoderDraw(pass, 3, 1, 0, 0);  // Fullscreen triangle
+  wgpuRenderPassEncoderEnd(pass);
+  wgpuRenderPassEncoderRelease(pass);
+}