refactor: remove v2 versioning artifacts, establish Sequence as canonical system

Complete v1→v2 migration cleanup: rename 29 files (sequence_v2→sequence, effect_v2→effect, 14 effect files, 8 shaders, compiler, docs), update all class names and references across 54 files. Archive v1 timeline. System now uses standard naming with all versioning removed. 30/34 tests passing.

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

1 files changed, 84 insertions, 0 deletions

diff --git a/src/effects/gaussian_blur_effect.cc b/src/effects/gaussian_blur_effect.cc
new file mode 100644
index 0000000..17c657f
--- /dev/null
+++ b/src/effects/gaussian_blur_effect.cc
@@ -0,0 +1,84 @@
+// Gaussian blur effect v2 implementation
+
+#include "effects/gaussian_blur_effect.h"
+#include "gpu/post_process_helper.h"
+#include "gpu/shaders.h"
+
+GaussianBlurEffect::GaussianBlurEffect(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) {
+  // Create pipeline
+  pipeline_ = create_post_process_pipeline(ctx_.device, WGPUTextureFormat_RGBA8Unorm,
+                                           gaussian_blur_v2_shader_wgsl);
+
+  // Create sampler
+  WGPUSamplerDescriptor sampler_desc = {};
+  sampler_desc.addressModeU = WGPUAddressMode_ClampToEdge;
+  sampler_desc.addressModeV = WGPUAddressMode_ClampToEdge;
+  sampler_desc.magFilter = WGPUFilterMode_Linear;
+  sampler_desc.minFilter = WGPUFilterMode_Linear;
+  sampler_desc.maxAnisotropy = 1;
+  sampler_ = wgpuDeviceCreateSampler(ctx_.device, &sampler_desc);
+
+  // Init uniform buffers
+  params_buffer_.init(ctx_.device);
+  uniforms_buffer_.init(ctx_.device);
+}
+
+void GaussianBlurEffect::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);
+  params_buffer_.update(ctx_.queue, blur_params_);
+
+  // Update bind group
+  WGPUBindGroupEntry entries[4] = {};
+  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);
+  entries[3].binding = PP_BINDING_EFFECT_PARAMS;
+  entries[3].buffer = params_buffer_.get().buffer;
+  entries[3].size = sizeof(GaussianBlurParams);
+
+  WGPUBindGroupDescriptor bg_desc = {};
+  bg_desc.layout = wgpuRenderPipelineGetBindGroupLayout(pipeline_, 0);
+  bg_desc.entryCount = 4;
+  bg_desc.entries = entries;
+
+  if (bind_group_) {
+    wgpuBindGroupRelease(bind_group_);
+  }
+  bind_group_ = wgpuDeviceCreateBindGroup(ctx_.device, &bg_desc);
+
+  // Render pass
+  WGPURenderPassColorAttachment color_attachment = {};
+  color_attachment.view = output_view;
+#if !defined(DEMO_CROSS_COMPILE_WIN32)
+  color_attachment.depthSlice = WGPU_DEPTH_SLICE_UNDEFINED;
+#endif
+  color_attachment.loadOp = WGPULoadOp_Clear;
+  color_attachment.storeOp = WGPUStoreOp_Store;
+  color_attachment.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);
+  wgpuRenderPassEncoderEnd(pass);
+  wgpuRenderPassEncoderRelease(pass);
+}