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1002	{"parentUuid":"0232f62e-9f44-4f7e-9306-da006d1a08d4","isSidechain":false,"promptId":"d9c7b1dc-35dd-4792-a058-e728d1ecb183","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01QViZ6QEwjAzBBW4TM6LNdd","type":"tool_result","content":"The file C:\\Users\\decid\\Documents\\projects\\sauna\\src\\render\\warp_pass.cpp has been updated successfully. (file state is current in your context — no need to Read it back)"}]},"uuid":"7d55ec63-d5ac-40b0-b63c-96c55d95239c","timestamp":"2026-06-10T11:57:20.457Z","toolUseResult":{"filePath":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\render\\warp_pass.cpp","oldString":"  c[20] = pointSample ? 1.0f : 0.0f;\n  c[21] = colorMult ? 1.0f : 0.0f;\n  c[22] = c[23] = 0;","newString":"  c[20] = pointSample ? 1.0f : 0.0f;\n  c[21] = colorMult ? 1.0f : 0.0f;\n  c[22] = r2Clamp ? 1.0f : 0.0f;\n  c[23] = 0;","originalFile":"#include \"render/warp_pass.h\"\n\n#include <d3dcompiler.h>\n\n#include <cstdio>\n#include <cstring>\n\nusing Microsoft::WRL::ComPtr;\n\nnamespace sauna {\nnamespace {\n\n// Direct port of EvalDistortion (S3 poly+grow). uv is viewport-local\n// (0..1 across one eye's half, v=0 top). flags.x: 1 = point sampling\n// (gate A), flags.y: 1 = apply color mult.\nconst char kWarp[] = R\"(\ncbuffer C : register(b0) {\n  float4 centerScale;  // cx, cy, scale, r2 cutoff\n  float4 kr;           // k1,k2,k3 (red), unused\n  float4 kg;\n  float4 kb;\n  float4 colorMult;    // rgb mult, unused\n  float4 flags;        // pointSample, useColorMult, r2Clamp\n};\nTexture2D eyeTex : register(t0);\nSamplerState linearBorder : register(s0);\nSamplerState pointBorder : register(s1);\n\nstruct VSOut { float4 pos : SV_Position; float2 uv : TEXCOORD0; };\n\nVSOut vsmain(uint id : SV_VertexID) {\n  VSOut o;\n  float2 uv = float2((id << 1) & 2, id & 2);\n  o.pos = float4(uv * float2(2, -2) + float2(-1, 1), 0, 1);\n  o.uv = uv;\n  return o;\n}\n\nfloat2 srcUv(float2 t, float r2, float3 k, float2 c, float s) {\n  float d = 1.0 + r2 * (k.x + r2 * (k.y + r2 * k.z));\n  return 0.5 + (t * d + c) * s;\n}\n\nfloat sampleCh(float2 uv, int ch) {\n  float4 v = (flags.x > 0.5) ? eyeTex.SampleLevel(pointBorder, uv, 0)\n                             : eyeTex.SampleLevel(linearBorder, uv, 0);\n  return ch == 0 ? v.r : (ch == 1 ? v.g : v.b);\n}\n\nfloat4 psmain(VSOut i) : SV_Target {\n  float2 c = centerScale.xy;\n  float s = centerScale.z;\n  float2 t = 2.0 * i.uv - 1.0 - c;\n  float r2 = dot(t, t);   // no cutoff clamp by default (S3)\n  if (flags.z > 0.5) r2 = min(r2, centerScale.w);\n  float3 outc;\n  outc.r = sampleCh(srcUv(t, r2, kr.xyz, c, s), 0);\n  outc.g = sampleCh(srcUv(t, r2, kg.xyz, c, s), 1);\n  outc.b = sampleCh(srcUv(t, r2, kb.xyz, c, s), 2);\n  if (flags.y > 0.5) outc *= colorMult.rgb;\n  return float4(outc, 1.0);\n}\n)\";\n\nbool compile(const char* entry, const char* target, ComPtr<ID3DBlob>* out) {\n  ComPtr<ID3DBlob> err;\n  if (FAILED(D3DCompile(kWarp, sizeof(kWarp) - 1, nullptr, nullptr, nullptr,\n                        entry, target, 0, 0, &*out, &err))) {\n    fprintf(stderr, \"warp %s: %s\\n\", entry,\n            err ? (const char*)err->GetBufferPointer() : \"failed\");\n    return false;\n  }\n  return true;\n}\n\n}  // namespace\n\nbool WarpPass::init(ID3D12Device* dev, DXGI_FORMAT rtFormat,\n                    const HmdConfig& cfg) {\n  for (int e = 0; e < 2; e++) {\n    const EyeCalib& eye = cfg.eye[e];\n    float* c = consts_[e];\n    c[0] = (float)eye.rgb[1].center_x;  // shared per eye on Beyond\n    c[1] = (float)eye.rgb[1].center_y;\n    c[2] = (float)(0.5 / (1.0 + eye.grow_for_undistort));\n    c[3] = (float)eye.undistort_r2_cutoff;\n    for (int ch = 0; ch < 3; ch++) {\n      c[4 + ch * 4 + 0] = (float)eye.rgb[ch].k[0];\n      c[4 + ch * 4 + 1] = (float)eye.rgb[ch].k[1];\n      c[4 + ch * 4 + 2] = (float)eye.rgb[ch].k[2];\n      c[4 + ch * 4 + 3] = 0;\n    }\n    for (int i = 0; i < 3; i++) c[16 + i] = (float)eye.color_mult[i];\n    c[19] = 0;\n  }\n\n  D3D12_DESCRIPTOR_RANGE range{};\n  range.RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_SRV;\n  range.NumDescriptors = 1;\n  D3D12_ROOT_PARAMETER params[2]{};\n  params[0].ParameterType = D3D12_ROOT_PARAMETER_TYPE_32BIT_CONSTANTS;\n  params[0].Constants.Num32BitValues = 24;  // 5 float4 consts + flags\n  params[0].ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;\n  params[1].ParameterType = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE;\n  params[1].DescriptorTable.NumDescriptorRanges = 1;\n  params[1].DescriptorTable.pDescriptorRanges = ⦥\n  params[1].ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;\n  D3D12_STATIC_SAMPLER_DESC samps[2]{};\n  for (int i = 0; i < 2; i++) {\n    samps[i].Filter = i == 0 ? D3D12_FILTER_MIN_MAG_MIP_LINEAR\n                             : D3D12_FILTER_MIN_MAG_MIP_POINT;\n    samps[i].AddressU = samps[i].AddressV = samps[i].AddressW =\n        D3D12_TEXTURE_ADDRESS_MODE_BORDER;\n    samps[i].BorderColor = D3D12_STATIC_BORDER_COLOR_OPAQUE_BLACK;\n    samps[i].ShaderRegister = i;\n    samps[i].ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;\n  }\n  D3D12_ROOT_SIGNATURE_DESC rs{};\n  rs.NumParameters = 2;\n  rs.pParameters = params;\n  rs.NumStaticSamplers = 2;\n  rs.pStaticSamplers = samps;\n  ComPtr<ID3DBlob> sig, err;\n  if (FAILED(D3D12SerializeRootSignature(&rs, D3D_ROOT_SIGNATURE_VERSION_1,\n                                         &sig, &err))) {\n    fprintf(stderr, \"warp root sig: %s\\n\",\n            err ? (const char*)err->GetBufferPointer() : \"failed\");\n    return false;\n  }\n  if (FAILED(dev->CreateRootSignature(0, sig->GetBufferPointer(),\n                                      sig->GetBufferSize(),\n                                      IID_PPV_ARGS(&rootSig_))))\n    return false;\n\n  ComPtr<ID3DBlob> vs, ps;\n  if (!compile(\"vsmain\", \"vs_5_0\", &vs) || !compile(\"psmain\", \"ps_5_0\", &ps))\n    return false;\n  D3D12_GRAPHICS_PIPELINE_STATE_DESC pd{};\n  pd.pRootSignature = rootSig_.Get();\n  pd.VS = {vs->GetBufferPointer(), vs->GetBufferSize()};\n  pd.PS = {ps->GetBufferPointer(), ps->GetBufferSize()};\n  pd.BlendState.RenderTarget[0].RenderTargetWriteMask =\n      D3D12_COLOR_WRITE_ENABLE_ALL;\n  pd.SampleMask = UINT_MAX;\n  pd.RasterizerState.FillMode = D3D12_FILL_MODE_SOLID;\n  pd.RasterizerState.CullMode = D3D12_CULL_MODE_NONE;\n  pd.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;\n  pd.NumRenderTargets = 1;\n  pd.RTVFormats[0] = rtFormat;\n  pd.SampleDesc.Count = 1;\n  return SUCCEEDED(\n      dev->CreateGraphicsPipelineState(&pd, IID_PPV_ARGS(&pso_)));\n}\n\nvoid WarpPass::record(ID3D12GraphicsCommandList* list, int eye,\n                      D3D12_GPU_DESCRIPTOR_HANDLE eyeSrv, uint32_t panelW,\n                      uint32_t panelH, bool pointSample, bool colorMult,\n                      bool r2Clamp) {\n  const float half = panelW / 2.0f;\n  D3D12_VIEWPORT vp{eye * half, 0, half, (float)panelH, 0, 1};\n  D3D12_RECT sc{(LONG)(eye * half), 0, (LONG)((eye + 1) * half),\n                (LONG)panelH};\n  list->RSSetViewports(1, &vp);\n  list->RSSetScissorRects(1, &sc);\n  list->SetGraphicsRootSignature(rootSig_.Get());\n  list->SetPipelineState(pso_.Get());\n  float c[24];\n  memcpy(c, consts_[eye], sizeof(consts_[0]));\n  c[20] = pointSample ? 1.0f : 0.0f;\n  c[21] = colorMult ? 1.0f : 0.0f;\n  c[22] = c[23] = 0;\n  list->SetGraphicsRoot32BitConstants(0, 24, c, 0);\n  list->SetGraphicsRootDescriptorTable(1, eyeSrv);\n  list->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);\n  list->DrawInstanced(3, 1, 0, 0);\n}\n\n}  // namespace sauna\n","structuredPatch":[{"oldStart":168,"oldLines":7,"newStart":168,"newLines":8,"lines":["   memcpy(c, consts_[eye], sizeof(consts_[0]));","   c[20] = pointSample ? 1.0f : 0.0f;","   c[21] = colorMult ? 1.0f : 0.0f;","-  c[22] = c[23] = 0;","+  c[22] = r2Clamp ? 1.0f : 0.0f;","+  c[23] = 0;","   list->SetGraphicsRoot32BitConstants(0, 24, c, 0);","   list->SetGraphicsRootDescriptorTable(1, eyeSrv);","   list->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"0232f62e-9f44-4f7e-9306-da006d1a08d4","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1003	{"parentUuid":"7d55ec63-d5ac-40b0-b63c-96c55d95239c","isSidechain":false,"message":{"model":"claude-fable-5","id":"msg_018xAYaRvh4GEz2L9xDTNZ23","type":"message","role":"assistant","content":[{"type":"text","text":"Now the canted-camera mode in spatial_light."}],"stop_reason":"tool_use","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":4446,"cache_read_input_tokens":446091,"output_tokens":1081,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":4446,"ephemeral_5m_input_tokens":0},"inference_geo":"not_available","iterations":[{"input_tokens":2,"output_tokens":1081,"cache_read_input_tokens":446091,"cache_creation_input_tokens":4446,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":4446},"type":"message"}],"speed":"standard"},"diagnostics":null},"requestId":"req_011CbuYBNGFn6ebSn8ubv6bj","type":"assistant","uuid":"e4ef4e1e-9ee7-4f99-bf14-fe1e44ee5886","timestamp":"2026-06-10T11:57:28.640Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1004	{"parentUuid":"e4ef4e1e-9ee7-4f99-bf14-fe1e44ee5886","isSidechain":false,"message":{"model":"claude-fable-5","id":"msg_018xAYaRvh4GEz2L9xDTNZ23","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01DSWhGYWG3KE127ZF9Mkq8K","name":"Edit","input":{"replace_all":false,"file_path":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","old_string":"// Rotate v by q.\nvoid quatRotate(const Quat& q, const float v[3], float out[3]) {","new_string":"// Apply the eye_to_head rotation as an extra eye<-head stage:\n// V' = [R_e2h^T] * V (rotation only; the +-ipd/2 translation is already in\n// V's head-frame stage). For --canted mode.\nvoid applyCant(const double e2h[3][3], float view[16]) {\n  float E[16];\n  memset(E, 0, sizeof(E));\n  for (int r = 0; r < 3; r++)\n    for (int c = 0; c < 3; c++) E[r * 4 + c] = (float)e2h[c][r];  // transpose\n  E[15] = 1.0f;\n  float out[16];\n  for (int i = 0; i < 4; i++)\n    for (int j = 0; j < 4; j++) {\n      out[i * 4 + j] = 0;\n      for (int k = 0; k < 4; k++)\n        out[i * 4 + j] += E[i * 4 + k] * view[k * 4 + j];\n    }\n  memcpy(view, out, sizeof(out));\n}\n\n// Rotate v by q.\nvoid quatRotate(const Quat& q, const float v[3], float out[3]) {"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":4446,"cache_read_input_tokens":446091,"output_tokens":1081,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":4446,"ephemeral_5m_input_tokens":0},"inference_geo":"not_available","iterations":[{"input_tokens":2,"output_tokens":1081,"cache_read_input_tokens":446091,"cache_creation_input_tokens":4446,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":4446},"type":"message"}],"speed":"standard"},"diagnostics":null},"requestId":"req_011CbuYBNGFn6ebSn8ubv6bj","type":"assistant","uuid":"41b9bfa1-7e17-49f8-868e-70b2f7707bd8","timestamp":"2026-06-10T11:57:34.756Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1005	{"parentUuid":"41b9bfa1-7e17-49f8-868e-70b2f7707bd8","isSidechain":false,"promptId":"d9c7b1dc-35dd-4792-a058-e728d1ecb183","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01DSWhGYWG3KE127ZF9Mkq8K","type":"tool_result","content":"The file C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp has been updated successfully. (file state is current in your context — no need to Read it back)"}]},"uuid":"a7a56634-5210-4649-bd0a-67b6066784da","timestamp":"2026-06-10T11:57:35.024Z","toolUseResult":{"filePath":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","oldString":"// Rotate v by q.\nvoid quatRotate(const Quat& q, const float v[3], float out[3]) {","newString":"// Apply the eye_to_head rotation as an extra eye<-head stage:\n// V' = [R_e2h^T] * V (rotation only; the +-ipd/2 translation is already in\n// V's head-frame stage). For --canted mode.\nvoid applyCant(const double e2h[3][3], float view[16]) {\n  float E[16];\n  memset(E, 0, sizeof(E));\n  for (int r = 0; r < 3; r++)\n    for (int c = 0; c < 3; c++) E[r * 4 + c] = (float)e2h[c][r];  // transpose\n  E[15] = 1.0f;\n  float out[16];\n  for (int i = 0; i < 4; i++)\n    for (int j = 0; j < 4; j++) {\n      out[i * 4 + j] = 0;\n      for (int k = 0; k < 4; k++)\n        out[i * 4 + j] += E[i * 4 + k] * view[k * 4 + j];\n    }\n  memcpy(view, out, sizeof(out));\n}\n\n// Rotate v by q.\nvoid quatRotate(const Quat& q, const float v[3], float out[3]) {","originalFile":null,"structuredPatch":[{"oldStart":78,"oldLines":6,"newStart":78,"newLines":25,"lines":["   out[15] = 1.0f;"," }"," ","+// Apply the eye_to_head rotation as an extra eye<-head stage:","+// V' = [R_e2h^T] * V (rotation only; the +-ipd/2 translation is already in","+// V's head-frame stage). For --canted mode.","+void applyCant(const double e2h[3][3], float view[16]) {","+  float E[16];","+  memset(E, 0, sizeof(E));","+  for (int r = 0; r < 3; r++)","+    for (int c = 0; c < 3; c++) E[r * 4 + c] = (float)e2h[c][r];  // transpose","+  E[15] = 1.0f;","+  float out[16];","+  for (int i = 0; i < 4; i++)","+    for (int j = 0; j < 4; j++) {","+      out[i * 4 + j] = 0;","+      for (int k = 0; k < 4; k++)","+        out[i * 4 + j] += E[i * 4 + k] * view[k * 4 + j];","+    }","+  memcpy(view, out, sizeof(out));","+}","+"," // Rotate v by q."," void quatRotate(const Quat& q, const float v[3], float out[3]) {","   const double qv[3] = {q.x, q.y, q.z};"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"41b9bfa1-7e17-49f8-868e-70b2f7707bd8","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
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1007	{"parentUuid":"d8312351-2d4a-4455-9b0d-bf37332e0c51","isSidechain":false,"promptId":"d9c7b1dc-35dd-4792-a058-e728d1ecb183","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01Me4izDZHdLsU6fRwWfcjtS","type":"tool_result","content":"The file C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp has been updated successfully. (file state is current in your context — no need to Read it back)"}]},"uuid":"b7fffc46-1a3c-4275-aaa5-4548cacb7bed","timestamp":"2026-06-10T11:57:36.778Z","toolUseResult":{"filePath":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","oldString":"  bool gridMode = false;","newString":"  bool gridMode = false;\n  bool canted = false;   // render genuinely canted cameras (S3 alt branch)\n  bool r2Clamp = false;  // clamp warp r^2 at undistort_r2_cutoff","originalFile":null,"structuredPatch":[{"oldStart":167,"oldLines":6,"newStart":167,"newLines":8,"lines":["   const char* imuSerial = \"\";","   double ipdOverrideMm = 0.0;","   bool gridMode = false;","+  bool canted = false;   // render genuinely canted cameras (S3 alt branch)","+  bool r2Clamp = false;  // clamp warp r^2 at undistort_r2_cutoff","   // Neck model: eye midpoint relative to the neck pivot, head frame","   // (+y up, +z back). GearVR/Quest 3DOF lineage values. Atomics: tuned","   // live from the keys thread (arrow keys) while the render loop reads."]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"d8312351-2d4a-4455-9b0d-bf37332e0c51","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1008	{"parentUuid":"b7fffc46-1a3c-4275-aaa5-4548cacb7bed","isSidechain":false,"message":{"model":"claude-fable-5","id":"msg_018xAYaRvh4GEz2L9xDTNZ23","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_011wPa7kWQbaaan5yf8hsR41","name":"Edit","input":{"replace_all":false,"file_path":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","old_string":"    else if (!strcmp(argv[i], \"--no-neck\")) neckModel = false;","new_string":"    else if (!strcmp(argv[i], \"--no-neck\")) neckModel = false;\n    else if (!strcmp(argv[i], \"--canted\")) canted = true;\n    else if (!strcmp(argv[i], \"--r2-clamp\")) r2Clamp = true;"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":4446,"cache_read_input_tokens":446091,"output_tokens":1081,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":4446,"ephemeral_5m_input_tokens":0},"inference_geo":"not_available","iterations":[{"input_tokens":2,"output_tokens":1081,"cache_read_input_tokens":446091,"cache_creation_input_tokens":4446,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":4446},"type":"message"}],"speed":"standard"},"diagnostics":null},"requestId":"req_011CbuYBNGFn6ebSn8ubv6bj","type":"assistant","uuid":"fa097606-5443-474c-ba3d-69dbd9623685","timestamp":"2026-06-10T11:57:38.602Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1009	{"parentUuid":"fa097606-5443-474c-ba3d-69dbd9623685","isSidechain":false,"promptId":"d9c7b1dc-35dd-4792-a058-e728d1ecb183","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_011wPa7kWQbaaan5yf8hsR41","type":"tool_result","content":"The file C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp has been updated successfully. (file state is current in your context — no need to Read it back)"}]},"uuid":"95d51cfb-4c7d-4605-9b56-a719cc40d2ff","timestamp":"2026-06-10T11:57:38.775Z","toolUseResult":{"filePath":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","oldString":"    else if (!strcmp(argv[i], \"--no-neck\")) neckModel = false;","newString":"    else if (!strcmp(argv[i], \"--no-neck\")) neckModel = false;\n    else if (!strcmp(argv[i], \"--canted\")) canted = true;\n    else if (!strcmp(argv[i], \"--r2-clamp\")) r2Clamp = true;","originalFile":null,"structuredPatch":[{"oldStart":180,"oldLines":6,"newStart":180,"newLines":8,"lines":["     else if (!strcmp(argv[i], \"--ipd-mm\") && i + 1 < argc) ipdOverrideMm = atof(argv[++i]);","     else if (!strcmp(argv[i], \"--grid\")) gridMode = true;","     else if (!strcmp(argv[i], \"--no-neck\")) neckModel = false;","+    else if (!strcmp(argv[i], \"--canted\")) canted = true;","+    else if (!strcmp(argv[i], \"--r2-clamp\")) r2Clamp = true;","     else if (!strcmp(argv[i], \"--neck-mm\") && i + 1 < argc) {","       // \"forward,up\" in millimeters","       double f = 80, u = 75;"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"fa097606-5443-474c-ba3d-69dbd9623685","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1010	{"parentUuid":"95d51cfb-4c7d-4605-9b56-a719cc40d2ff","isSidechain":false,"attachment":{"type":"task_reminder","content":[],"itemCount":0},"type":"attachment","uuid":"d8d368e2-2a6b-48ba-8f6f-9c389eaac86c","timestamp":"2026-06-10T11:57:38.787Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1011	{"parentUuid":"d8d368e2-2a6b-48ba-8f6f-9c389eaac86c","isSidechain":false,"message":{"model":"claude-fable-5","id":"msg_01AH6G9g6h5o2ojFcVK7SNoM","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_014eGzPS96D8fpjdqgSWpdnj","name":"Edit","input":{"replace_all":false,"file_path":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","old_string":"  double frus[2][4];\n  for (int e = 0; e < 2; e++)\n    ProjectionRawTangents(cfg.eye[e], &frus[e][0], &frus[e][1], &frus[e][2],\n                          &frus[e][3]);","new_string":"  double frus[2][4];\n  for (int e = 0; e < 2; e++) {\n    if (canted) {\n      // Genuinely canted cameras (the S3 alternative branch): view carries\n      // the full eye_to_head rotation, so the window is the UNFOLDED\n      // grow-expanded intrinsics frustum in the lens-axis (eye) frame.\n      // The warp is unchanged — it maps panel -> the same q-space the\n      // window spans (u_src = (q+G)/2G either way).\n      const EyeCalib& eye = cfg.eye[e];\n      const double G = 1.0 + eye.grow_for_undistort;\n      const double cx = -eye.intrinsics[0][2], cy = eye.intrinsics[1][2];\n      const double fx = eye.intrinsics[0][0], fy = eye.intrinsics[1][1];\n      frus[e][0] = (-G - cx) / fx;\n      frus[e][1] = (G - cx) / fx;\n      frus[e][2] = -(G - cy) / fy;\n      frus[e][3] = -(-G - cy) / fy;\n    } else {\n      ProjectionRawTangents(cfg.eye[e], &frus[e][0], &frus[e][1], &frus[e][2],\n                            &frus[e][3]);\n    }\n  }\n  if (canted) printf(\"CANTED mode: eye_to_head rotations in the view, \"\n                     \"unfolded intrinsics windows\\n\");\n  if (r2Clamp) printf(\"R2-CLAMP mode: warp clamps r^2 at undistort_r2_cutoff\\n\");"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":131,"cache_creation_input_tokens":1342,"cache_read_input_tokens":450537,"output_tokens":1484,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":1342,"ephemeral_5m_input_tokens":0},"inference_geo":"not_available","iterations":[{"input_tokens":131,"output_tokens":1484,"cache_read_input_tokens":450537,"cache_creation_input_tokens":1342,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":1342},"type":"message"}],"speed":"standard"},"diagnostics":null},"requestId":"req_011CbuYCiHYkCFtMCGh2exER","type":"assistant","uuid":"7b25f5f3-99f6-45e6-a578-b33e49979eb1","timestamp":"2026-06-10T11:57:53.226Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1012	{"parentUuid":"7b25f5f3-99f6-45e6-a578-b33e49979eb1","isSidechain":false,"promptId":"d9c7b1dc-35dd-4792-a058-e728d1ecb183","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_014eGzPS96D8fpjdqgSWpdnj","type":"tool_result","content":"The file C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp has been updated successfully. (file state is current in your context — no need to Read it back)"}]},"uuid":"162571e1-e9d8-476e-a988-3ec0e298520c","timestamp":"2026-06-10T11:57:53.423Z","toolUseResult":{"filePath":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","oldString":"  double frus[2][4];\n  for (int e = 0; e < 2; e++)\n    ProjectionRawTangents(cfg.eye[e], &frus[e][0], &frus[e][1], &frus[e][2],\n                          &frus[e][3]);","newString":"  double frus[2][4];\n  for (int e = 0; e < 2; e++) {\n    if (canted) {\n      // Genuinely canted cameras (the S3 alternative branch): view carries\n      // the full eye_to_head rotation, so the window is the UNFOLDED\n      // grow-expanded intrinsics frustum in the lens-axis (eye) frame.\n      // The warp is unchanged — it maps panel -> the same q-space the\n      // window spans (u_src = (q+G)/2G either way).\n      const EyeCalib& eye = cfg.eye[e];\n      const double G = 1.0 + eye.grow_for_undistort;\n      const double cx = -eye.intrinsics[0][2], cy = eye.intrinsics[1][2];\n      const double fx = eye.intrinsics[0][0], fy = eye.intrinsics[1][1];\n      frus[e][0] = (-G - cx) / fx;\n      frus[e][1] = (G - cx) / fx;\n      frus[e][2] = -(G - cy) / fy;\n      frus[e][3] = -(-G - cy) / fy;\n    } else {\n      ProjectionRawTangents(cfg.eye[e], &frus[e][0], &frus[e][1], &frus[e][2],\n                            &frus[e][3]);\n    }\n  }\n  if (canted) printf(\"CANTED mode: eye_to_head rotations in the view, \"\n                     \"unfolded intrinsics windows\\n\");\n  if (r2Clamp) printf(\"R2-CLAMP mode: warp clamps r^2 at undistort_r2_cutoff\\n\");","originalFile":null,"structuredPatch":[{"oldStart":204,"oldLines":9,"newStart":204,"newLines":29,"lines":["     return 2;","   }","   double frus[2][4];","-  for (int e = 0; e < 2; e++)","-    ProjectionRawTangents(cfg.eye[e], &frus[e][0], &frus[e][1], &frus[e][2],","-                          &frus[e][3]);","+  for (int e = 0; e < 2; e++) {","+    if (canted) {","+      // Genuinely canted cameras (the S3 alternative branch): view carries","+      // the full eye_to_head rotation, so the window is the UNFOLDED","+      // grow-expanded intrinsics frustum in the lens-axis (eye) frame.","+      // The warp is unchanged — it maps panel -> the same q-space the","+      // window spans (u_src = (q+G)/2G either way).","+      const EyeCalib& eye = cfg.eye[e];","+      const double G = 1.0 + eye.grow_for_undistort;","+      const double cx = -eye.intrinsics[0][2], cy = eye.intrinsics[1][2];","+      const double fx = eye.intrinsics[0][0], fy = eye.intrinsics[1][1];","+      frus[e][0] = (-G - cx) / fx;","+      frus[e][1] = (G - cx) / fx;","+      frus[e][2] = -(G - cy) / fy;","+      frus[e][3] = -(-G - cy) / fy;","+    } else {","+      ProjectionRawTangents(cfg.eye[e], &frus[e][0], &frus[e][1], &frus[e][2],","+                            &frus[e][3]);","+    }","+  }","+  if (canted) printf(\"CANTED mode: eye_to_head rotations in the view, \"","+                     \"unfolded intrinsics windows\\n\");","+  if (r2Clamp) printf(\"R2-CLAMP mode: warp clamps r^2 at undistort_r2_cutoff\\n\");","   printf(\"unit %s  ipd %.1f mm%s  neck model %s (fwd %.0f mm, up %.0f mm)  \"","          \"(config: %s)\\n\",","          cfg.serial.c_str(),"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"7b25f5f3-99f6-45e6-a578-b33e49979eb1","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1013	{"parentUuid":"162571e1-e9d8-476e-a988-3ec0e298520c","isSidechain":false,"message":{"model":"claude-fable-5","id":"msg_01AH6G9g6h5o2ojFcVK7SNoM","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01CxXfBb2koJgimfGLsUEMx8","name":"Edit","input":{"replace_all":false,"file_path":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","old_string":"      for (int e = 0; e < 2; e++) {\n        float V[16], P[16], VP[16];\n        viewFromPose(q, headPos, tEye[e], V);\n        projFromTangents(frus[e][0], frus[e][1], frus[e][2], frus[e][3],\n                         0.05f, 100.0f, P);\n        matMul(P, V, VP);\n        scene.record(list, eyeRtv[e], eyeW, eyeH, VP);\n      }","new_string":"      for (int e = 0; e < 2; e++) {\n        float V[16], P[16], VP[16];\n        viewFromPose(q, headPos, tEye[e], V);\n        if (canted) applyCant(cfg.eye[e].eye_to_head, V);\n        projFromTangents(frus[e][0], frus[e][1], frus[e][2], frus[e][3],\n                         0.05f, 100.0f, P);\n        matMul(P, V, VP);\n        scene.record(list, eyeRtv[e], eyeW, eyeH, VP);\n      }"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":131,"cache_creation_input_tokens":1342,"cache_read_input_tokens":450537,"output_tokens":1484,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":1342,"ephemeral_5m_input_tokens":0},"inference_geo":"not_available","iterations":[{"input_tokens":131,"output_tokens":1484,"cache_read_input_tokens":450537,"cache_creation_input_tokens":1342,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":1342},"type":"message"}],"speed":"standard"},"diagnostics":null},"requestId":"req_011CbuYCiHYkCFtMCGh2exER","type":"assistant","uuid":"92adb078-47b9-4b52-bc54-22c02ce77853","timestamp":"2026-06-10T11:57:57.391Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1014	{"parentUuid":"92adb078-47b9-4b52-bc54-22c02ce77853","isSidechain":false,"promptId":"d9c7b1dc-35dd-4792-a058-e728d1ecb183","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01CxXfBb2koJgimfGLsUEMx8","type":"tool_result","content":"The file C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp has been updated successfully. (file state is current in your context — no need to Read it back)"}]},"uuid":"c4c14014-415f-4b46-9403-d171825c9c7c","timestamp":"2026-06-10T11:57:57.567Z","toolUseResult":{"filePath":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","oldString":"      for (int e = 0; e < 2; e++) {\n        float V[16], P[16], VP[16];\n        viewFromPose(q, headPos, tEye[e], V);\n        projFromTangents(frus[e][0], frus[e][1], frus[e][2], frus[e][3],\n                         0.05f, 100.0f, P);\n        matMul(P, V, VP);\n        scene.record(list, eyeRtv[e], eyeW, eyeH, VP);\n      }","newString":"      for (int e = 0; e < 2; e++) {\n        float V[16], P[16], VP[16];\n        viewFromPose(q, headPos, tEye[e], V);\n        if (canted) applyCant(cfg.eye[e].eye_to_head, V);\n        projFromTangents(frus[e][0], frus[e][1], frus[e][2], frus[e][3],\n                         0.05f, 100.0f, P);\n        matMul(P, V, VP);\n        scene.record(list, eyeRtv[e], eyeW, eyeH, VP);\n      }","originalFile":null,"structuredPatch":[{"oldStart":479,"oldLines":6,"newStart":479,"newLines":7,"lines":["       for (int e = 0; e < 2; e++) {","         float V[16], P[16], VP[16];","         viewFromPose(q, headPos, tEye[e], V);","+        if (canted) applyCant(cfg.eye[e].eye_to_head, V);","         projFromTangents(frus[e][0], frus[e][1], frus[e][2], frus[e][3],","                          0.05f, 100.0f, P);","         matMul(P, V, VP);"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"92adb078-47b9-4b52-bc54-22c02ce77853","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1015	{"parentUuid":"c4c14014-415f-4b46-9403-d171825c9c7c","isSidechain":false,"message":{"model":"claude-fable-5","id":"msg_01AH6G9g6h5o2ojFcVK7SNoM","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_012LeSAeEvM7AkrtewwCen8m","name":"Edit","input":{"replace_all":false,"file_path":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","old_string":"      warp.record(list, e, h, fc.width, fc.height);","new_string":"      warp.record(list, e, h, fc.width, fc.height, /*pointSample=*/false,\n                  /*colorMult=*/true, r2Clamp);"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":131,"cache_creation_input_tokens":1342,"cache_read_input_tokens":450537,"output_tokens":1484,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":1342,"ephemeral_5m_input_tokens":0},"inference_geo":"not_available","iterations":[{"input_tokens":131,"output_tokens":1484,"cache_read_input_tokens":450537,"cache_creation_input_tokens":1342,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":1342},"type":"message"}],"speed":"standard"},"diagnostics":null},"requestId":"req_011CbuYCiHYkCFtMCGh2exER","type":"assistant","uuid":"67030916-a1cd-451f-a10a-d2bd9c5f9399","timestamp":"2026-06-10T11:57:58.807Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1016	{"type":"last-prompt","lastPrompt":"so you spent all that effort and put in all that time just to prove that i'm wrong, instead of trying to figure out the problem. great. i've been building and QCing headsets for 5 years. i KNOW stereo…","leafUuid":"e839fb2e-160a-456c-bfeb-608966cb2e8c","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00"}
1017	{"type":"ai-title","aiTitle":"Proceed with next steps","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00"}
1018	{"type":"mode","mode":"normal","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00"}
1019	{"parentUuid":"67030916-a1cd-451f-a10a-d2bd9c5f9399","isSidechain":false,"promptId":"d9c7b1dc-35dd-4792-a058-e728d1ecb183","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_012LeSAeEvM7AkrtewwCen8m","type":"tool_result","content":"The file C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp has been updated successfully. (file state is current in your context — no need to Read it back)"}]},"uuid":"e839fb2e-160a-456c-bfeb-608966cb2e8c","timestamp":"2026-06-10T11:57:59.012Z","toolUseResult":{"filePath":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","oldString":"      warp.record(list, e, h, fc.width, fc.height);","newString":"      warp.record(list, e, h, fc.width, fc.height, /*pointSample=*/false,\n                  /*colorMult=*/true, r2Clamp);","originalFile":null,"structuredPatch":[{"oldStart":502,"oldLines":7,"newStart":502,"newLines":8,"lines":["       D3D12_GPU_DESCRIPTOR_HANDLE h =","           eyeSrvHeap->GetGPUDescriptorHandleForHeapStart();","       h.ptr += e * srvStep;","-      warp.record(list, e, h, fc.width, fc.height);","+      warp.record(list, e, h, fc.width, fc.height, /*pointSample=*/false,","+                  /*colorMult=*/true, r2Clamp);","     }","     if (!gridMode) {","       for (int e = 0; e < 2; e++) {"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"67030916-a1cd-451f-a10a-d2bd9c5f9399","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1020	{"parentUuid":"e839fb2e-160a-456c-bfeb-608966cb2e8c","isSidechain":false,"message":{"model":"claude-fable-5","id":"msg_01BUuYcYedaBBQjLv2oEWTuX","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01MrN1HeTDj86FGy9JSS8NNR","name":"Bash","input":{"command":"cmake --build build --target spatial_light warp_check 2>&1 | grep -E \"error|warning C|\\.exe\" | head && ./build/Debug/spatial_light.exe 4 --canted --config \"/c/Program Files (x86)/Steam/config/lighthouse/lhr-1f8e25f1/config.json\" 2>&1 | grep -E \"CANTED|RESULT|VERDICT\" && ./build/Debug/spatial_light.exe 4 --r2-clamp --config \"/c/Program Files (x86)/Steam/config/lighthouse/lhr-1f8e25f1/config.json\" 2>&1 | grep -E \"R2|RESULT\"","description":"Build + smoke both modes","timeout":120000},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":1874,"cache_read_input_tokens":451879,"output_tokens":325,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":1874,"ephemeral_5m_input_tokens":0},"inference_geo":"not_available","iterations":[{"input_tokens":2,"output_tokens":325,"cache_read_input_tokens":451879,"cache_creation_input_tokens":1874,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":1874},"type":"message"}],"speed":"standard"},"diagnostics":null},"requestId":"req_011CbuYECvWfp8Zb9NvFS4sz","type":"assistant","uuid":"fc026892-4e94-49e6-957d-2ca5b50d6058","timestamp":"2026-06-10T11:58:08.913Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1021	{"parentUuid":"fc026892-4e94-49e6-957d-2ca5b50d6058","isSidechain":false,"promptId":"d9c7b1dc-35dd-4792-a058-e728d1ecb183","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01MrN1HeTDj86FGy9JSS8NNR","type":"tool_result","content":"  spatial_light.vcxproj -> C:\\Users\\decid\\Documents\\projects\\sauna\\build\\Debug\\spatial_light.exe\n  warp_check.vcxproj -> C:\\Users\\decid\\Documents\\projects\\sauna\\build\\Debug\\warp_check.exe\nCANTED mode: eye_to_head rotations in the view, unfolded intrinsics windows\nPRESENT RESULT: 285 frames in 4.0s = 71.23 fps avg, presentErrors 0, waitTimeouts 0, freeRunEvents 0\nVERDICT: RAN CLEAN (eyes-in criteria are the M2 exit: world-fixed, fusable, no swim, recenter)\nR2-CLAMP mode: warp clamps r^2 at undistort_r2_cutoff\nPRESENT RESULT: 296 frames in 4.0s = 73.78 fps avg, presentErrors 0, waitTimeouts 0, freeRunEvents 0","is_error":false}]},"uuid":"f07548b6-41de-4aba-8fee-672eb1e79e31","timestamp":"2026-06-10T11:58:38.763Z","toolUseResult":{"stdout":"  spatial_light.vcxproj -> C:\\Users\\decid\\Documents\\projects\\sauna\\build\\Debug\\spatial_light.exe\n  warp_check.vcxproj -> C:\\Users\\decid\\Documents\\projects\\sauna\\build\\Debug\\warp_check.exe\nCANTED mode: eye_to_head rotations in the view, unfolded intrinsics windows\nPRESENT RESULT: 285 frames in 4.0s = 71.23 fps avg, presentErrors 0, waitTimeouts 0, freeRunEvents 0\nVERDICT: RAN CLEAN (eyes-in criteria are the M2 exit: world-fixed, fusable, no swim, recenter)\nR2-CLAMP mode: warp clamps r^2 at undistort_r2_cutoff\nPRESENT RESULT: 296 frames in 4.0s = 73.78 fps avg, presentErrors 0, waitTimeouts 0, freeRunEvents 0","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"fc026892-4e94-49e6-957d-2ca5b50d6058","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1022	{"parentUuid":"f07548b6-41de-4aba-8fee-672eb1e79e31","isSidechain":false,"message":{"model":"claude-fable-5","id":"msg_01MoFvyQVAWaREYRyp8Mvdp1","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01FaP27naWkN869JpQ2EfgiB","name":"Bash","input":{"command":"git add -A && git commit -q -m \"spatial_light: --canted and --r2-clamp eyes-in discriminator modes\n\nField report: stereo convergence still wrong off-center despite the\nfield audit showing our output uniform vs the ComputeDistortion +\nprojection_raw contract. The audit only proves contract-consistency;\nthe user's reference (SteamVR on the same unit) may differ from that\ncontract in exactly two places the API does not expose, and both\nproduce mirrored per-eye (= stereo-visible, monocular-grid-invisible)\nerrors:\n\n--canted: the S3 'genuinely canted cameras' branch. If the calibration\npolynomials live in the lens-axis frame, the optically true render uses\nthe full eye_to_head ROTATION in the view and the UNFOLDED grow-expanded\nintrinsics window; the driver's parallel+fold contract is then an\napproximation whose error is a per-eye homography — invisible to a\nmonocular grid (lines stay straight), mirrored between eyes. The warp is\nunchanged: u_src = (q+G)/2G spans the same q-space either way.\n\n--r2-clamp: clamp warp r^2 at undistort_r2_cutoff (Monado behavior, and\nthe polynomial is extrapolation beyond the fit region). S3 proved the\nComputeDistortion API does NOT clamp, but left open whether the real\ncompositor mesh does. Affects only the off-center field — matches the\n'diverges away from the convergence point' spatial profile.\n\nipd fact-check for this rig: steamvr.vrsettings driver_BeyondSteamVR\nipd_mm = 63, config default 63, dump eye_to_head +-31.5 mm — SteamVR\nhere runs 63, not 64.\n\nCo-Authored-By: Claude Fable 5 <noreply@anthropic.com>\" && git push 2>&1 | tail -1","description":"Commit discriminator modes"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":660,"cache_read_input_tokens":453753,"output_tokens":701,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":660,"ephemeral_5m_input_tokens":0},"inference_geo":"not_available","iterations":[{"input_tokens":2,"output_tokens":701,"cache_read_input_tokens":453753,"cache_creation_input_tokens":660,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":660},"type":"message"}],"speed":"standard"},"diagnostics":null},"requestId":"req_011CbuYH8qnHacHFL94RRaGE","type":"assistant","uuid":"0f4be6e4-31af-49fe-ba49-2810fcda6085","timestamp":"2026-06-10T11:58:54.736Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1023	{"parentUuid":"0f4be6e4-31af-49fe-ba49-2810fcda6085","isSidechain":false,"promptId":"d9c7b1dc-35dd-4792-a058-e728d1ecb183","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01FaP27naWkN869JpQ2EfgiB","type":"tool_result","content":"warning: in the working copy of 'src/app/spatial_light.cpp', LF will be replaced by CRLF the next time Git touches it\nwarning: in the working copy of 'src/render/warp_pass.cpp', LF will be replaced by CRLF the next time Git touches it\nwarning: in the working copy of 'src/render/warp_pass.h', LF will be replaced by CRLF the next time Git touches it\n   f7268b5..de57522  main -> main","is_error":false}]},"uuid":"7220a2f5-fbf1-489f-8f8f-7b1156394d30","timestamp":"2026-06-10T11:58:57.465Z","toolUseResult":{"stdout":"warning: in the working copy of 'src/app/spatial_light.cpp', LF will be replaced by CRLF the next time Git touches it\nwarning: in the working copy of 'src/render/warp_pass.cpp', LF will be replaced by CRLF the next time Git touches it\nwarning: in the working copy of 'src/render/warp_pass.h', LF will be replaced by CRLF the next time Git touches it\n   f7268b5..de57522  main -> main","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false,"gitOperation":{"push":{"branch":"main"}}},"sourceToolAssistantUUID":"0f4be6e4-31af-49fe-ba49-2810fcda6085","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1024	{"parentUuid":"7220a2f5-fbf1-489f-8f8f-7b1156394d30","isSidechain":false,"message":{"model":"claude-fable-5","id":"msg_017Y1GXcH9Zr2PUbkqJE7DZK","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"","signature":"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"}],"stop_reason":"end_turn","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":857,"cache_read_input_tokens":454413,"output_tokens":850,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":857,"ephemeral_5m_input_tokens":0},"inference_geo":"not_available","iterations":[{"input_tokens":2,"output_tokens":850,"cache_read_input_tokens":454413,"cache_creation_input_tokens":857,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":857},"type":"message"}],"speed":"standard"},"diagnostics":null},"requestId":"req_011CbuYJWkgKkgJxF1QUEyB5","type":"assistant","uuid":"d9527360-90a8-4068-8a82-444774add5ff","timestamp":"2026-06-10T11:59:16.825Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1025	{"parentUuid":"d9527360-90a8-4068-8a82-444774add5ff","isSidechain":false,"message":{"model":"claude-fable-5","id":"msg_017Y1GXcH9Zr2PUbkqJE7DZK","type":"message","role":"assistant","content":[{"type":"text","text":"Fair criticism. The audit proved our render matches the `ComputeDistortion` + `GetProjectionRaw` **API contract** — and I treated that as \"correct.\" Your point stands: if SteamVR's actual display path differs from its own API anywhere, our output is contract-faithful and still wrong-feeling, and the API can't tell us. Both places it can differ are exactly the two things you asked about, and both produce **mirrored per-eye errors** — invisible to the monocular grid test, brutal for stereo.\n\n**Canting — answering your question directly:** no, we do not use the `eye_to_head` rotations in the view. We replicate the driver's documented parallel-camera path: identity eye rotations, cant folded into the asymmetric projection (that's what `parallel_render_cameras: true` + the dump's identity `GetEyeToHeadTransform` say SteamVR's app-facing side does). But S3 flagged a second self-consistent interpretation: if the calibration polynomials live in the **lens-axis frame**, the true render is **canted cameras + unfolded window**, and the fold is an approximation. New mode (`de57522`, pushed):\n\n```\nspatial_light --canted --config ... --ipd-mm 63\n```\n\nFull per-eye `eye_to_head` rotation in the view, unfolded grow-expanded intrinsics windows, warp unchanged (same q-space either way).\n\n**Periphery:** `--r2-clamp` clamps the warp at `undistort_r2_cutoff` (Monado does this; the polynomial is extrapolation beyond the fit region; S3 proved only that the *API* doesn't clamp, not the compositor's real mesh).\n\n**IPD:** checked your premise on this rig — `steamvr.vrsettings` has `driver_BeyondSteamVR.ipd_mm = 63`, config default 63, and the dump's live `eye_to_head` was ±31.5 mm. **This machine's SteamVR runs 63, not 64.** Use `--ipd-mm 63` to match your reference exactly.\n\nA/B matrix, ~2 min: baseline → `--canted` → `--r2-clamp` → both. If `--canted` fixes the off-center convergence, you were right about the cant belonging in eye-to-head, the fold contract is the approximation, and I'll make canted the default and re-verify the chain in that frame."}],"stop_reason":"end_turn","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":857,"cache_read_input_tokens":454413,"output_tokens":850,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":857,"ephemeral_5m_input_tokens":0},"inference_geo":"not_available","iterations":[{"input_tokens":2,"output_tokens":850,"cache_read_input_tokens":454413,"cache_creation_input_tokens":857,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":857},"type":"message"}],"speed":"standard"},"diagnostics":null},"requestId":"req_011CbuYJWkgKkgJxF1QUEyB5","type":"assistant","uuid":"a07a7c3d-efac-4098-88cf-4095a7c633cb","timestamp":"2026-06-10T11:59:16.868Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
1026	{"parentUuid":"a07a7c3d-efac-4098-88cf-4095a7c633cb","isSidechain":false,"type":"system","subtype":"stop_hook_summary","hookCount":1,"hookInfos":[{"command":"$CLAUDE_PLUGIN_ROOT/owl.exe hook-idle","durationMs":60}],"hookErrors":[],"hookAdditionalContext":[],"preventedContinuation":false,"stopReason":"","hasOutput":false,"level":"suggestion","timestamp":"2026-06-10T11:59:16.969Z","uuid":"080ad4d3-7933-44a7-bc23-7ab2183555c3","toolUseID":"2a691960-700d-45be-bffa-c8f4e4acdbc2","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}

{"type":"ai-title","aiTitle":"Proceed with next steps","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00"}
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{"parentUuid":"0232f62e-9f44-4f7e-9306-da006d1a08d4","isSidechain":false,"promptId":"d9c7b1dc-35dd-4792-a058-e728d1ecb183","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01QViZ6QEwjAzBBW4TM6LNdd","type":"tool_result","content":"The file C:\\Users\\decid\\Documents\\projects\\sauna\\src\\render\\warp_pass.cpp has been updated successfully. (file state is current in your context — no need to Read it back)"}]},"uuid":"7d55ec63-d5ac-40b0-b63c-96c55d95239c","timestamp":"2026-06-10T11:57:20.457Z","toolUseResult":{"filePath":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\render\\warp_pass.cpp","oldString":"  c[20] = pointSample ? 1.0f : 0.0f;\n  c[21] = colorMult ? 1.0f : 0.0f;\n  c[22] = c[23] = 0;","newString":"  c[20] = pointSample ? 1.0f : 0.0f;\n  c[21] = colorMult ? 1.0f : 0.0f;\n  c[22] = r2Clamp ? 1.0f : 0.0f;\n  c[23] = 0;","originalFile":"#include \"render/warp_pass.h\"\n\n#include <d3dcompiler.h>\n\n#include <cstdio>\n#include <cstring>\n\nusing Microsoft::WRL::ComPtr;\n\nnamespace sauna {\nnamespace {\n\n// Direct port of EvalDistortion (S3 poly+grow). uv is viewport-local\n// (0..1 across one eye's half, v=0 top). flags.x: 1 = point sampling\n// (gate A), flags.y: 1 = apply color mult.\nconst char kWarp[] = R\"(\ncbuffer C : register(b0) {\n  float4 centerScale;  // cx, cy, scale, r2 cutoff\n  float4 kr;           // k1,k2,k3 (red), unused\n  float4 kg;\n  float4 kb;\n  float4 colorMult;    // rgb mult, unused\n  float4 flags;        // pointSample, useColorMult, r2Clamp\n};\nTexture2D eyeTex : register(t0);\nSamplerState linearBorder : register(s0);\nSamplerState pointBorder : register(s1);\n\nstruct VSOut { float4 pos : SV_Position; float2 uv : TEXCOORD0; };\n\nVSOut vsmain(uint id : SV_VertexID) {\n  VSOut o;\n  float2 uv = float2((id << 1) & 2, id & 2);\n  o.pos = float4(uv * float2(2, -2) + float2(-1, 1), 0, 1);\n  o.uv = uv;\n  return o;\n}\n\nfloat2 srcUv(float2 t, float r2, float3 k, float2 c, float s) {\n  float d = 1.0 + r2 * (k.x + r2 * (k.y + r2 * k.z));\n  return 0.5 + (t * d + c) * s;\n}\n\nfloat sampleCh(float2 uv, int ch) {\n  float4 v = (flags.x > 0.5) ? eyeTex.SampleLevel(pointBorder, uv, 0)\n                             : eyeTex.SampleLevel(linearBorder, uv, 0);\n  return ch == 0 ? v.r : (ch == 1 ? v.g : v.b);\n}\n\nfloat4 psmain(VSOut i) : SV_Target {\n  float2 c = centerScale.xy;\n  float s = centerScale.z;\n  float2 t = 2.0 * i.uv - 1.0 - c;\n  float r2 = dot(t, t);   // no cutoff clamp by default (S3)\n  if (flags.z > 0.5) r2 = min(r2, centerScale.w);\n  float3 outc;\n  outc.r = sampleCh(srcUv(t, r2, kr.xyz, c, s), 0);\n  outc.g = sampleCh(srcUv(t, r2, kg.xyz, c, s), 1);\n  outc.b = sampleCh(srcUv(t, r2, kb.xyz, c, s), 2);\n  if (flags.y > 0.5) outc *= colorMult.rgb;\n  return float4(outc, 1.0);\n}\n)\";\n\nbool compile(const char* entry, const char* target, ComPtr<ID3DBlob>* out) {\n  ComPtr<ID3DBlob> err;\n  if (FAILED(D3DCompile(kWarp, sizeof(kWarp) - 1, nullptr, nullptr, nullptr,\n                        entry, target, 0, 0, &*out, &err))) {\n    fprintf(stderr, \"warp %s: %s\\n\", entry,\n            err ? (const char*)err->GetBufferPointer() : \"failed\");\n    return false;\n  }\n  return true;\n}\n\n}  // namespace\n\nbool WarpPass::init(ID3D12Device* dev, DXGI_FORMAT rtFormat,\n                    const HmdConfig& cfg) {\n  for (int e = 0; e < 2; e++) {\n    const EyeCalib& eye = cfg.eye[e];\n    float* c = consts_[e];\n    c[0] = (float)eye.rgb[1].center_x;  // shared per eye on Beyond\n    c[1] = (float)eye.rgb[1].center_y;\n    c[2] = (float)(0.5 / (1.0 + eye.grow_for_undistort));\n    c[3] = (float)eye.undistort_r2_cutoff;\n    for (int ch = 0; ch < 3; ch++) {\n      c[4 + ch * 4 + 0] = (float)eye.rgb[ch].k[0];\n      c[4 + ch * 4 + 1] = (float)eye.rgb[ch].k[1];\n      c[4 + ch * 4 + 2] = (float)eye.rgb[ch].k[2];\n      c[4 + ch * 4 + 3] = 0;\n    }\n    for (int i = 0; i < 3; i++) c[16 + i] = (float)eye.color_mult[i];\n    c[19] = 0;\n  }\n\n  D3D12_DESCRIPTOR_RANGE range{};\n  range.RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_SRV;\n  range.NumDescriptors = 1;\n  D3D12_ROOT_PARAMETER params[2]{};\n  params[0].ParameterType = D3D12_ROOT_PARAMETER_TYPE_32BIT_CONSTANTS;\n  params[0].Constants.Num32BitValues = 24;  // 5 float4 consts + flags\n  params[0].ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;\n  params[1].ParameterType = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE;\n  params[1].DescriptorTable.NumDescriptorRanges = 1;\n  params[1].DescriptorTable.pDescriptorRanges = ⦥\n  params[1].ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;\n  D3D12_STATIC_SAMPLER_DESC samps[2]{};\n  for (int i = 0; i < 2; i++) {\n    samps[i].Filter = i == 0 ? D3D12_FILTER_MIN_MAG_MIP_LINEAR\n                             : D3D12_FILTER_MIN_MAG_MIP_POINT;\n    samps[i].AddressU = samps[i].AddressV = samps[i].AddressW =\n        D3D12_TEXTURE_ADDRESS_MODE_BORDER;\n    samps[i].BorderColor = D3D12_STATIC_BORDER_COLOR_OPAQUE_BLACK;\n    samps[i].ShaderRegister = i;\n    samps[i].ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;\n  }\n  D3D12_ROOT_SIGNATURE_DESC rs{};\n  rs.NumParameters = 2;\n  rs.pParameters = params;\n  rs.NumStaticSamplers = 2;\n  rs.pStaticSamplers = samps;\n  ComPtr<ID3DBlob> sig, err;\n  if (FAILED(D3D12SerializeRootSignature(&rs, D3D_ROOT_SIGNATURE_VERSION_1,\n                                         &sig, &err))) {\n    fprintf(stderr, \"warp root sig: %s\\n\",\n            err ? (const char*)err->GetBufferPointer() : \"failed\");\n    return false;\n  }\n  if (FAILED(dev->CreateRootSignature(0, sig->GetBufferPointer(),\n                                      sig->GetBufferSize(),\n                                      IID_PPV_ARGS(&rootSig_))))\n    return false;\n\n  ComPtr<ID3DBlob> vs, ps;\n  if (!compile(\"vsmain\", \"vs_5_0\", &vs) || !compile(\"psmain\", \"ps_5_0\", &ps))\n    return false;\n  D3D12_GRAPHICS_PIPELINE_STATE_DESC pd{};\n  pd.pRootSignature = rootSig_.Get();\n  pd.VS = {vs->GetBufferPointer(), vs->GetBufferSize()};\n  pd.PS = {ps->GetBufferPointer(), ps->GetBufferSize()};\n  pd.BlendState.RenderTarget[0].RenderTargetWriteMask =\n      D3D12_COLOR_WRITE_ENABLE_ALL;\n  pd.SampleMask = UINT_MAX;\n  pd.RasterizerState.FillMode = D3D12_FILL_MODE_SOLID;\n  pd.RasterizerState.CullMode = D3D12_CULL_MODE_NONE;\n  pd.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;\n  pd.NumRenderTargets = 1;\n  pd.RTVFormats[0] = rtFormat;\n  pd.SampleDesc.Count = 1;\n  return SUCCEEDED(\n      dev->CreateGraphicsPipelineState(&pd, IID_PPV_ARGS(&pso_)));\n}\n\nvoid WarpPass::record(ID3D12GraphicsCommandList* list, int eye,\n                      D3D12_GPU_DESCRIPTOR_HANDLE eyeSrv, uint32_t panelW,\n                      uint32_t panelH, bool pointSample, bool colorMult,\n                      bool r2Clamp) {\n  const float half = panelW / 2.0f;\n  D3D12_VIEWPORT vp{eye * half, 0, half, (float)panelH, 0, 1};\n  D3D12_RECT sc{(LONG)(eye * half), 0, (LONG)((eye + 1) * half),\n                (LONG)panelH};\n  list->RSSetViewports(1, &vp);\n  list->RSSetScissorRects(1, &sc);\n  list->SetGraphicsRootSignature(rootSig_.Get());\n  list->SetPipelineState(pso_.Get());\n  float c[24];\n  memcpy(c, consts_[eye], sizeof(consts_[0]));\n  c[20] = pointSample ? 1.0f : 0.0f;\n  c[21] = colorMult ? 1.0f : 0.0f;\n  c[22] = c[23] = 0;\n  list->SetGraphicsRoot32BitConstants(0, 24, c, 0);\n  list->SetGraphicsRootDescriptorTable(1, eyeSrv);\n  list->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);\n  list->DrawInstanced(3, 1, 0, 0);\n}\n\n}  // namespace sauna\n","structuredPatch":[{"oldStart":168,"oldLines":7,"newStart":168,"newLines":8,"lines":["   memcpy(c, consts_[eye], sizeof(consts_[0]));","   c[20] = pointSample ? 1.0f : 0.0f;","   c[21] = colorMult ? 1.0f : 0.0f;","-  c[22] = c[23] = 0;","+  c[22] = r2Clamp ? 1.0f : 0.0f;","+  c[23] = 0;","   list->SetGraphicsRoot32BitConstants(0, 24, c, 0);","   list->SetGraphicsRootDescriptorTable(1, eyeSrv);","   list->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"0232f62e-9f44-4f7e-9306-da006d1a08d4","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
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{"parentUuid":"fa097606-5443-474c-ba3d-69dbd9623685","isSidechain":false,"promptId":"d9c7b1dc-35dd-4792-a058-e728d1ecb183","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_011wPa7kWQbaaan5yf8hsR41","type":"tool_result","content":"The file C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp has been updated successfully. (file state is current in your context — no need to Read it back)"}]},"uuid":"95d51cfb-4c7d-4605-9b56-a719cc40d2ff","timestamp":"2026-06-10T11:57:38.775Z","toolUseResult":{"filePath":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","oldString":"    else if (!strcmp(argv[i], \"--no-neck\")) neckModel = false;","newString":"    else if (!strcmp(argv[i], \"--no-neck\")) neckModel = false;\n    else if (!strcmp(argv[i], \"--canted\")) canted = true;\n    else if (!strcmp(argv[i], \"--r2-clamp\")) r2Clamp = true;","originalFile":null,"structuredPatch":[{"oldStart":180,"oldLines":6,"newStart":180,"newLines":8,"lines":["     else if (!strcmp(argv[i], \"--ipd-mm\") && i + 1 < argc) ipdOverrideMm = atof(argv[++i]);","     else if (!strcmp(argv[i], \"--grid\")) gridMode = true;","     else if (!strcmp(argv[i], \"--no-neck\")) neckModel = false;","+    else if (!strcmp(argv[i], \"--canted\")) canted = true;","+    else if (!strcmp(argv[i], \"--r2-clamp\")) r2Clamp = true;","     else if (!strcmp(argv[i], \"--neck-mm\") && i + 1 < argc) {","       // \"forward,up\" in millimeters","       double f = 80, u = 75;"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"fa097606-5443-474c-ba3d-69dbd9623685","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
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{"parentUuid":"d8d368e2-2a6b-48ba-8f6f-9c389eaac86c","isSidechain":false,"message":{"model":"claude-fable-5","id":"msg_01AH6G9g6h5o2ojFcVK7SNoM","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_014eGzPS96D8fpjdqgSWpdnj","name":"Edit","input":{"replace_all":false,"file_path":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","old_string":"  double frus[2][4];\n  for (int e = 0; e < 2; e++)\n    ProjectionRawTangents(cfg.eye[e], &frus[e][0], &frus[e][1], &frus[e][2],\n                          &frus[e][3]);","new_string":"  double frus[2][4];\n  for (int e = 0; e < 2; e++) {\n    if (canted) {\n      // Genuinely canted cameras (the S3 alternative branch): view carries\n      // the full eye_to_head rotation, so the window is the UNFOLDED\n      // grow-expanded intrinsics frustum in the lens-axis (eye) frame.\n      // The warp is unchanged — it maps panel -> the same q-space the\n      // window spans (u_src = (q+G)/2G either way).\n      const EyeCalib& eye = cfg.eye[e];\n      const double G = 1.0 + eye.grow_for_undistort;\n      const double cx = -eye.intrinsics[0][2], cy = eye.intrinsics[1][2];\n      const double fx = eye.intrinsics[0][0], fy = eye.intrinsics[1][1];\n      frus[e][0] = (-G - cx) / fx;\n      frus[e][1] = (G - cx) / fx;\n      frus[e][2] = -(G - cy) / fy;\n      frus[e][3] = -(-G - cy) / fy;\n    } else {\n      ProjectionRawTangents(cfg.eye[e], &frus[e][0], &frus[e][1], &frus[e][2],\n                            &frus[e][3]);\n    }\n  }\n  if (canted) printf(\"CANTED mode: eye_to_head rotations in the view, \"\n                     \"unfolded intrinsics windows\\n\");\n  if (r2Clamp) printf(\"R2-CLAMP mode: warp clamps r^2 at undistort_r2_cutoff\\n\");"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":131,"cache_creation_input_tokens":1342,"cache_read_input_tokens":450537,"output_tokens":1484,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":1342,"ephemeral_5m_input_tokens":0},"inference_geo":"not_available","iterations":[{"input_tokens":131,"output_tokens":1484,"cache_read_input_tokens":450537,"cache_creation_input_tokens":1342,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":1342},"type":"message"}],"speed":"standard"},"diagnostics":null},"requestId":"req_011CbuYCiHYkCFtMCGh2exER","type":"assistant","uuid":"7b25f5f3-99f6-45e6-a578-b33e49979eb1","timestamp":"2026-06-10T11:57:53.226Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
{"parentUuid":"7b25f5f3-99f6-45e6-a578-b33e49979eb1","isSidechain":false,"promptId":"d9c7b1dc-35dd-4792-a058-e728d1ecb183","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_014eGzPS96D8fpjdqgSWpdnj","type":"tool_result","content":"The file C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp has been updated successfully. (file state is current in your context — no need to Read it back)"}]},"uuid":"162571e1-e9d8-476e-a988-3ec0e298520c","timestamp":"2026-06-10T11:57:53.423Z","toolUseResult":{"filePath":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","oldString":"  double frus[2][4];\n  for (int e = 0; e < 2; e++)\n    ProjectionRawTangents(cfg.eye[e], &frus[e][0], &frus[e][1], &frus[e][2],\n                          &frus[e][3]);","newString":"  double frus[2][4];\n  for (int e = 0; e < 2; e++) {\n    if (canted) {\n      // Genuinely canted cameras (the S3 alternative branch): view carries\n      // the full eye_to_head rotation, so the window is the UNFOLDED\n      // grow-expanded intrinsics frustum in the lens-axis (eye) frame.\n      // The warp is unchanged — it maps panel -> the same q-space the\n      // window spans (u_src = (q+G)/2G either way).\n      const EyeCalib& eye = cfg.eye[e];\n      const double G = 1.0 + eye.grow_for_undistort;\n      const double cx = -eye.intrinsics[0][2], cy = eye.intrinsics[1][2];\n      const double fx = eye.intrinsics[0][0], fy = eye.intrinsics[1][1];\n      frus[e][0] = (-G - cx) / fx;\n      frus[e][1] = (G - cx) / fx;\n      frus[e][2] = -(G - cy) / fy;\n      frus[e][3] = -(-G - cy) / fy;\n    } else {\n      ProjectionRawTangents(cfg.eye[e], &frus[e][0], &frus[e][1], &frus[e][2],\n                            &frus[e][3]);\n    }\n  }\n  if (canted) printf(\"CANTED mode: eye_to_head rotations in the view, \"\n                     \"unfolded intrinsics windows\\n\");\n  if (r2Clamp) printf(\"R2-CLAMP mode: warp clamps r^2 at undistort_r2_cutoff\\n\");","originalFile":null,"structuredPatch":[{"oldStart":204,"oldLines":9,"newStart":204,"newLines":29,"lines":["     return 2;","   }","   double frus[2][4];","-  for (int e = 0; e < 2; e++)","-    ProjectionRawTangents(cfg.eye[e], &frus[e][0], &frus[e][1], &frus[e][2],","-                          &frus[e][3]);","+  for (int e = 0; e < 2; e++) {","+    if (canted) {","+      // Genuinely canted cameras (the S3 alternative branch): view carries","+      // the full eye_to_head rotation, so the window is the UNFOLDED","+      // grow-expanded intrinsics frustum in the lens-axis (eye) frame.","+      // The warp is unchanged — it maps panel -> the same q-space the","+      // window spans (u_src = (q+G)/2G either way).","+      const EyeCalib& eye = cfg.eye[e];","+      const double G = 1.0 + eye.grow_for_undistort;","+      const double cx = -eye.intrinsics[0][2], cy = eye.intrinsics[1][2];","+      const double fx = eye.intrinsics[0][0], fy = eye.intrinsics[1][1];","+      frus[e][0] = (-G - cx) / fx;","+      frus[e][1] = (G - cx) / fx;","+      frus[e][2] = -(G - cy) / fy;","+      frus[e][3] = -(-G - cy) / fy;","+    } else {","+      ProjectionRawTangents(cfg.eye[e], &frus[e][0], &frus[e][1], &frus[e][2],","+                            &frus[e][3]);","+    }","+  }","+  if (canted) printf(\"CANTED mode: eye_to_head rotations in the view, \"","+                     \"unfolded intrinsics windows\\n\");","+  if (r2Clamp) printf(\"R2-CLAMP mode: warp clamps r^2 at undistort_r2_cutoff\\n\");","   printf(\"unit %s  ipd %.1f mm%s  neck model %s (fwd %.0f mm, up %.0f mm)  \"","          \"(config: %s)\\n\",","          cfg.serial.c_str(),"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"7b25f5f3-99f6-45e6-a578-b33e49979eb1","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
{"parentUuid":"162571e1-e9d8-476e-a988-3ec0e298520c","isSidechain":false,"message":{"model":"claude-fable-5","id":"msg_01AH6G9g6h5o2ojFcVK7SNoM","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01CxXfBb2koJgimfGLsUEMx8","name":"Edit","input":{"replace_all":false,"file_path":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","old_string":"      for (int e = 0; e < 2; e++) {\n        float V[16], P[16], VP[16];\n        viewFromPose(q, headPos, tEye[e], V);\n        projFromTangents(frus[e][0], frus[e][1], frus[e][2], frus[e][3],\n                         0.05f, 100.0f, P);\n        matMul(P, V, VP);\n        scene.record(list, eyeRtv[e], eyeW, eyeH, VP);\n      }","new_string":"      for (int e = 0; e < 2; e++) {\n        float V[16], P[16], VP[16];\n        viewFromPose(q, headPos, tEye[e], V);\n        if (canted) applyCant(cfg.eye[e].eye_to_head, V);\n        projFromTangents(frus[e][0], frus[e][1], frus[e][2], frus[e][3],\n                         0.05f, 100.0f, P);\n        matMul(P, V, VP);\n        scene.record(list, eyeRtv[e], eyeW, eyeH, VP);\n      }"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":131,"cache_creation_input_tokens":1342,"cache_read_input_tokens":450537,"output_tokens":1484,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":1342,"ephemeral_5m_input_tokens":0},"inference_geo":"not_available","iterations":[{"input_tokens":131,"output_tokens":1484,"cache_read_input_tokens":450537,"cache_creation_input_tokens":1342,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":1342},"type":"message"}],"speed":"standard"},"diagnostics":null},"requestId":"req_011CbuYCiHYkCFtMCGh2exER","type":"assistant","uuid":"92adb078-47b9-4b52-bc54-22c02ce77853","timestamp":"2026-06-10T11:57:57.391Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
{"parentUuid":"92adb078-47b9-4b52-bc54-22c02ce77853","isSidechain":false,"promptId":"d9c7b1dc-35dd-4792-a058-e728d1ecb183","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01CxXfBb2koJgimfGLsUEMx8","type":"tool_result","content":"The file C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp has been updated successfully. (file state is current in your context — no need to Read it back)"}]},"uuid":"c4c14014-415f-4b46-9403-d171825c9c7c","timestamp":"2026-06-10T11:57:57.567Z","toolUseResult":{"filePath":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","oldString":"      for (int e = 0; e < 2; e++) {\n        float V[16], P[16], VP[16];\n        viewFromPose(q, headPos, tEye[e], V);\n        projFromTangents(frus[e][0], frus[e][1], frus[e][2], frus[e][3],\n                         0.05f, 100.0f, P);\n        matMul(P, V, VP);\n        scene.record(list, eyeRtv[e], eyeW, eyeH, VP);\n      }","newString":"      for (int e = 0; e < 2; e++) {\n        float V[16], P[16], VP[16];\n        viewFromPose(q, headPos, tEye[e], V);\n        if (canted) applyCant(cfg.eye[e].eye_to_head, V);\n        projFromTangents(frus[e][0], frus[e][1], frus[e][2], frus[e][3],\n                         0.05f, 100.0f, P);\n        matMul(P, V, VP);\n        scene.record(list, eyeRtv[e], eyeW, eyeH, VP);\n      }","originalFile":null,"structuredPatch":[{"oldStart":479,"oldLines":6,"newStart":479,"newLines":7,"lines":["       for (int e = 0; e < 2; e++) {","         float V[16], P[16], VP[16];","         viewFromPose(q, headPos, tEye[e], V);","+        if (canted) applyCant(cfg.eye[e].eye_to_head, V);","         projFromTangents(frus[e][0], frus[e][1], frus[e][2], frus[e][3],","                          0.05f, 100.0f, P);","         matMul(P, V, VP);"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"92adb078-47b9-4b52-bc54-22c02ce77853","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
{"parentUuid":"c4c14014-415f-4b46-9403-d171825c9c7c","isSidechain":false,"message":{"model":"claude-fable-5","id":"msg_01AH6G9g6h5o2ojFcVK7SNoM","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_012LeSAeEvM7AkrtewwCen8m","name":"Edit","input":{"replace_all":false,"file_path":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","old_string":"      warp.record(list, e, h, fc.width, fc.height);","new_string":"      warp.record(list, e, h, fc.width, fc.height, /*pointSample=*/false,\n                  /*colorMult=*/true, r2Clamp);"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":131,"cache_creation_input_tokens":1342,"cache_read_input_tokens":450537,"output_tokens":1484,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":1342,"ephemeral_5m_input_tokens":0},"inference_geo":"not_available","iterations":[{"input_tokens":131,"output_tokens":1484,"cache_read_input_tokens":450537,"cache_creation_input_tokens":1342,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":1342},"type":"message"}],"speed":"standard"},"diagnostics":null},"requestId":"req_011CbuYCiHYkCFtMCGh2exER","type":"assistant","uuid":"67030916-a1cd-451f-a10a-d2bd9c5f9399","timestamp":"2026-06-10T11:57:58.807Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
{"type":"last-prompt","lastPrompt":"so you spent all that effort and put in all that time just to prove that i'm wrong, instead of trying to figure out the problem. great. i've been building and QCing headsets for 5 years. i KNOW stereo…","leafUuid":"e839fb2e-160a-456c-bfeb-608966cb2e8c","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00"}
{"type":"ai-title","aiTitle":"Proceed with next steps","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00"}
{"type":"mode","mode":"normal","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00"}
{"parentUuid":"67030916-a1cd-451f-a10a-d2bd9c5f9399","isSidechain":false,"promptId":"d9c7b1dc-35dd-4792-a058-e728d1ecb183","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_012LeSAeEvM7AkrtewwCen8m","type":"tool_result","content":"The file C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp has been updated successfully. (file state is current in your context — no need to Read it back)"}]},"uuid":"e839fb2e-160a-456c-bfeb-608966cb2e8c","timestamp":"2026-06-10T11:57:59.012Z","toolUseResult":{"filePath":"C:\\Users\\decid\\Documents\\projects\\sauna\\src\\app\\spatial_light.cpp","oldString":"      warp.record(list, e, h, fc.width, fc.height);","newString":"      warp.record(list, e, h, fc.width, fc.height, /*pointSample=*/false,\n                  /*colorMult=*/true, r2Clamp);","originalFile":null,"structuredPatch":[{"oldStart":502,"oldLines":7,"newStart":502,"newLines":8,"lines":["       D3D12_GPU_DESCRIPTOR_HANDLE h =","           eyeSrvHeap->GetGPUDescriptorHandleForHeapStart();","       h.ptr += e * srvStep;","-      warp.record(list, e, h, fc.width, fc.height);","+      warp.record(list, e, h, fc.width, fc.height, /*pointSample=*/false,","+                  /*colorMult=*/true, r2Clamp);","     }","     if (!gridMode) {","       for (int e = 0; e < 2; e++) {"]}],"userModified":false,"replaceAll":false},"sourceToolAssistantUUID":"67030916-a1cd-451f-a10a-d2bd9c5f9399","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
{"parentUuid":"e839fb2e-160a-456c-bfeb-608966cb2e8c","isSidechain":false,"message":{"model":"claude-fable-5","id":"msg_01BUuYcYedaBBQjLv2oEWTuX","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01MrN1HeTDj86FGy9JSS8NNR","name":"Bash","input":{"command":"cmake --build build --target spatial_light warp_check 2>&1 | grep -E \"error|warning C|\\.exe\" | head && ./build/Debug/spatial_light.exe 4 --canted --config \"/c/Program Files (x86)/Steam/config/lighthouse/lhr-1f8e25f1/config.json\" 2>&1 | grep -E \"CANTED|RESULT|VERDICT\" && ./build/Debug/spatial_light.exe 4 --r2-clamp --config \"/c/Program Files (x86)/Steam/config/lighthouse/lhr-1f8e25f1/config.json\" 2>&1 | grep -E \"R2|RESULT\"","description":"Build + smoke both modes","timeout":120000},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":1874,"cache_read_input_tokens":451879,"output_tokens":325,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":1874,"ephemeral_5m_input_tokens":0},"inference_geo":"not_available","iterations":[{"input_tokens":2,"output_tokens":325,"cache_read_input_tokens":451879,"cache_creation_input_tokens":1874,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":1874},"type":"message"}],"speed":"standard"},"diagnostics":null},"requestId":"req_011CbuYECvWfp8Zb9NvFS4sz","type":"assistant","uuid":"fc026892-4e94-49e6-957d-2ca5b50d6058","timestamp":"2026-06-10T11:58:08.913Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
{"parentUuid":"fc026892-4e94-49e6-957d-2ca5b50d6058","isSidechain":false,"promptId":"d9c7b1dc-35dd-4792-a058-e728d1ecb183","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01MrN1HeTDj86FGy9JSS8NNR","type":"tool_result","content":"  spatial_light.vcxproj -> C:\\Users\\decid\\Documents\\projects\\sauna\\build\\Debug\\spatial_light.exe\n  warp_check.vcxproj -> C:\\Users\\decid\\Documents\\projects\\sauna\\build\\Debug\\warp_check.exe\nCANTED mode: eye_to_head rotations in the view, unfolded intrinsics windows\nPRESENT RESULT: 285 frames in 4.0s = 71.23 fps avg, presentErrors 0, waitTimeouts 0, freeRunEvents 0\nVERDICT: RAN CLEAN (eyes-in criteria are the M2 exit: world-fixed, fusable, no swim, recenter)\nR2-CLAMP mode: warp clamps r^2 at undistort_r2_cutoff\nPRESENT RESULT: 296 frames in 4.0s = 73.78 fps avg, presentErrors 0, waitTimeouts 0, freeRunEvents 0","is_error":false}]},"uuid":"f07548b6-41de-4aba-8fee-672eb1e79e31","timestamp":"2026-06-10T11:58:38.763Z","toolUseResult":{"stdout":"  spatial_light.vcxproj -> C:\\Users\\decid\\Documents\\projects\\sauna\\build\\Debug\\spatial_light.exe\n  warp_check.vcxproj -> C:\\Users\\decid\\Documents\\projects\\sauna\\build\\Debug\\warp_check.exe\nCANTED mode: eye_to_head rotations in the view, unfolded intrinsics windows\nPRESENT RESULT: 285 frames in 4.0s = 71.23 fps avg, presentErrors 0, waitTimeouts 0, freeRunEvents 0\nVERDICT: RAN CLEAN (eyes-in criteria are the M2 exit: world-fixed, fusable, no swim, recenter)\nR2-CLAMP mode: warp clamps r^2 at undistort_r2_cutoff\nPRESENT RESULT: 296 frames in 4.0s = 73.78 fps avg, presentErrors 0, waitTimeouts 0, freeRunEvents 0","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false},"sourceToolAssistantUUID":"fc026892-4e94-49e6-957d-2ca5b50d6058","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
{"parentUuid":"f07548b6-41de-4aba-8fee-672eb1e79e31","isSidechain":false,"message":{"model":"claude-fable-5","id":"msg_01MoFvyQVAWaREYRyp8Mvdp1","type":"message","role":"assistant","content":[{"type":"tool_use","id":"toolu_01FaP27naWkN869JpQ2EfgiB","name":"Bash","input":{"command":"git add -A && git commit -q -m \"spatial_light: --canted and --r2-clamp eyes-in discriminator modes\n\nField report: stereo convergence still wrong off-center despite the\nfield audit showing our output uniform vs the ComputeDistortion +\nprojection_raw contract. The audit only proves contract-consistency;\nthe user's reference (SteamVR on the same unit) may differ from that\ncontract in exactly two places the API does not expose, and both\nproduce mirrored per-eye (= stereo-visible, monocular-grid-invisible)\nerrors:\n\n--canted: the S3 'genuinely canted cameras' branch. If the calibration\npolynomials live in the lens-axis frame, the optically true render uses\nthe full eye_to_head ROTATION in the view and the UNFOLDED grow-expanded\nintrinsics window; the driver's parallel+fold contract is then an\napproximation whose error is a per-eye homography — invisible to a\nmonocular grid (lines stay straight), mirrored between eyes. The warp is\nunchanged: u_src = (q+G)/2G spans the same q-space either way.\n\n--r2-clamp: clamp warp r^2 at undistort_r2_cutoff (Monado behavior, and\nthe polynomial is extrapolation beyond the fit region). S3 proved the\nComputeDistortion API does NOT clamp, but left open whether the real\ncompositor mesh does. Affects only the off-center field — matches the\n'diverges away from the convergence point' spatial profile.\n\nipd fact-check for this rig: steamvr.vrsettings driver_BeyondSteamVR\nipd_mm = 63, config default 63, dump eye_to_head +-31.5 mm — SteamVR\nhere runs 63, not 64.\n\nCo-Authored-By: Claude Fable 5 <noreply@anthropic.com>\" && git push 2>&1 | tail -1","description":"Commit discriminator modes"},"caller":{"type":"direct"}}],"stop_reason":"tool_use","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":660,"cache_read_input_tokens":453753,"output_tokens":701,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":660,"ephemeral_5m_input_tokens":0},"inference_geo":"not_available","iterations":[{"input_tokens":2,"output_tokens":701,"cache_read_input_tokens":453753,"cache_creation_input_tokens":660,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":660},"type":"message"}],"speed":"standard"},"diagnostics":null},"requestId":"req_011CbuYH8qnHacHFL94RRaGE","type":"assistant","uuid":"0f4be6e4-31af-49fe-ba49-2810fcda6085","timestamp":"2026-06-10T11:58:54.736Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
{"parentUuid":"0f4be6e4-31af-49fe-ba49-2810fcda6085","isSidechain":false,"promptId":"d9c7b1dc-35dd-4792-a058-e728d1ecb183","type":"user","message":{"role":"user","content":[{"tool_use_id":"toolu_01FaP27naWkN869JpQ2EfgiB","type":"tool_result","content":"warning: in the working copy of 'src/app/spatial_light.cpp', LF will be replaced by CRLF the next time Git touches it\nwarning: in the working copy of 'src/render/warp_pass.cpp', LF will be replaced by CRLF the next time Git touches it\nwarning: in the working copy of 'src/render/warp_pass.h', LF will be replaced by CRLF the next time Git touches it\n   f7268b5..de57522  main -> main","is_error":false}]},"uuid":"7220a2f5-fbf1-489f-8f8f-7b1156394d30","timestamp":"2026-06-10T11:58:57.465Z","toolUseResult":{"stdout":"warning: in the working copy of 'src/app/spatial_light.cpp', LF will be replaced by CRLF the next time Git touches it\nwarning: in the working copy of 'src/render/warp_pass.cpp', LF will be replaced by CRLF the next time Git touches it\nwarning: in the working copy of 'src/render/warp_pass.h', LF will be replaced by CRLF the next time Git touches it\n   f7268b5..de57522  main -> main","stderr":"","interrupted":false,"isImage":false,"noOutputExpected":false,"gitOperation":{"push":{"branch":"main"}}},"sourceToolAssistantUUID":"0f4be6e4-31af-49fe-ba49-2810fcda6085","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
{"parentUuid":"7220a2f5-fbf1-489f-8f8f-7b1156394d30","isSidechain":false,"message":{"model":"claude-fable-5","id":"msg_017Y1GXcH9Zr2PUbkqJE7DZK","type":"message","role":"assistant","content":[{"type":"thinking","thinking":"","signature":"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"}],"stop_reason":"end_turn","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":857,"cache_read_input_tokens":454413,"output_tokens":850,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":857,"ephemeral_5m_input_tokens":0},"inference_geo":"not_available","iterations":[{"input_tokens":2,"output_tokens":850,"cache_read_input_tokens":454413,"cache_creation_input_tokens":857,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":857},"type":"message"}],"speed":"standard"},"diagnostics":null},"requestId":"req_011CbuYJWkgKkgJxF1QUEyB5","type":"assistant","uuid":"d9527360-90a8-4068-8a82-444774add5ff","timestamp":"2026-06-10T11:59:16.825Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
{"parentUuid":"d9527360-90a8-4068-8a82-444774add5ff","isSidechain":false,"message":{"model":"claude-fable-5","id":"msg_017Y1GXcH9Zr2PUbkqJE7DZK","type":"message","role":"assistant","content":[{"type":"text","text":"Fair criticism. The audit proved our render matches the `ComputeDistortion` + `GetProjectionRaw` **API contract** — and I treated that as \"correct.\" Your point stands: if SteamVR's actual display path differs from its own API anywhere, our output is contract-faithful and still wrong-feeling, and the API can't tell us. Both places it can differ are exactly the two things you asked about, and both produce **mirrored per-eye errors** — invisible to the monocular grid test, brutal for stereo.\n\n**Canting — answering your question directly:** no, we do not use the `eye_to_head` rotations in the view. We replicate the driver's documented parallel-camera path: identity eye rotations, cant folded into the asymmetric projection (that's what `parallel_render_cameras: true` + the dump's identity `GetEyeToHeadTransform` say SteamVR's app-facing side does). But S3 flagged a second self-consistent interpretation: if the calibration polynomials live in the **lens-axis frame**, the true render is **canted cameras + unfolded window**, and the fold is an approximation. New mode (`de57522`, pushed):\n\n```\nspatial_light --canted --config ... --ipd-mm 63\n```\n\nFull per-eye `eye_to_head` rotation in the view, unfolded grow-expanded intrinsics windows, warp unchanged (same q-space either way).\n\n**Periphery:** `--r2-clamp` clamps the warp at `undistort_r2_cutoff` (Monado does this; the polynomial is extrapolation beyond the fit region; S3 proved only that the *API* doesn't clamp, not the compositor's real mesh).\n\n**IPD:** checked your premise on this rig — `steamvr.vrsettings` has `driver_BeyondSteamVR.ipd_mm = 63`, config default 63, and the dump's live `eye_to_head` was ±31.5 mm. **This machine's SteamVR runs 63, not 64.** Use `--ipd-mm 63` to match your reference exactly.\n\nA/B matrix, ~2 min: baseline → `--canted` → `--r2-clamp` → both. If `--canted` fixes the off-center convergence, you were right about the cant belonging in eye-to-head, the fold contract is the approximation, and I'll make canted the default and re-verify the chain in that frame."}],"stop_reason":"end_turn","stop_sequence":null,"stop_details":null,"usage":{"input_tokens":2,"cache_creation_input_tokens":857,"cache_read_input_tokens":454413,"output_tokens":850,"server_tool_use":{"web_search_requests":0,"web_fetch_requests":0},"service_tier":"standard","cache_creation":{"ephemeral_1h_input_tokens":857,"ephemeral_5m_input_tokens":0},"inference_geo":"not_available","iterations":[{"input_tokens":2,"output_tokens":850,"cache_read_input_tokens":454413,"cache_creation_input_tokens":857,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":857},"type":"message"}],"speed":"standard"},"diagnostics":null},"requestId":"req_011CbuYJWkgKkgJxF1QUEyB5","type":"assistant","uuid":"a07a7c3d-efac-4098-88cf-4095a7c633cb","timestamp":"2026-06-10T11:59:16.868Z","userType":"external","entrypoint":"cli","cwd":"C:\\Users\\decid\\Documents\\projects\\sauna","sessionId":"cf816497-22d3-47fe-a76d-ad4c793d6d00","version":"2.1.170","gitBranch":"HEAD"}
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