panic: runtime error: index out of range [0] with length 0

[dufguix]

Hi.
Trying cogentcore on windows 11 24H2.

Followed: https://www.cogentcore.org/core/install

Demo -> Panic

go run cogentcore.org/core/examples/demo@main
panic: runtime error: index out of range [0] with length 0

Other test -> Good

go run github.com/cogentcore/webgpu/examples/triangle@main
works as expected.

Simple code test ->Panic

panic: runtime error: index out of range [0] with length 0

package main

import "cogentcore.org/core/core"

func main() {
	b := core.NewBody()
	core.NewButton(b).SetText("Hello, World!")
	b.RunMainWindow()
}

Am I missing something ?

[dufguix]

go run cogentcore.org/core/gpu/cmd/webgpuinfo@main - result:

Default WebGPU Adapter number: 2   Type: cpu   Backend: d3d12
Set the GPU_DEVICE environment variable to an adapter number to select a different GPU

#####################################################################
WebGPU Adapter number: 0   Type: discrete-gpu   Backend: vulkan
{
        "VendorId": 4318,
        "VendorName": "0x10de",
        "Architecture": "",
        "DeviceId": 7817,
        "Name": "0x1e89",
        "DriverDescription": "NVIDIA GeForce RTX 2060",
        "AdapterType": 0,
        "BackendType": 6
}

{
        "Limits": {
                "MaxTextureDimension1D": 32768,
                "MaxTextureDimension2D": 32768,
                "MaxTextureDimension3D": 16384,
                "MaxTextureArrayLayers": 2048,
                "MaxBindGroups": 8,
                "MaxBindingsPerBindGroup": 1000,
                "MaxDynamicUniformBuffersPerPipelineLayout": 15,
                "MaxDynamicStorageBuffersPerPipelineLayout": 16,
                "MaxSampledTexturesPerShaderStage": 1048576,
                "MaxSamplersPerShaderStage": 1048576,
                "MaxStorageBuffersPerShaderStage": 1048576,
                "MaxStorageTexturesPerShaderStage": 1048576,
                "MaxUniformBuffersPerShaderStage": 1048576,
                "MaxUniformBufferBindingSize": 65536,
                "MaxStorageBufferBindingSize": 2147483648,
                "MinUniformBufferOffsetAlignment": 64,
                "MinStorageBufferOffsetAlignment": 32,
                "MaxVertexBuffers": 16,
                "MaxBufferSize": 18446744073709551615,
                "MaxVertexAttributes": 32,
                "MaxVertexBufferArrayStride": 2048,
                "MaxInterStageShaderComponents": 128,
                "MaxInterStageShaderVariables": 0,
                "MaxColorAttachments": 0,
                "MaxColorAttachmentBytesPerSample": 0,
                "MaxComputeWorkgroupStorageSize": 49152,
                "MaxComputeInvocationsPerWorkgroup": 1024,
                "MaxComputeWorkgroupSizeX": 1024,
                "MaxComputeWorkgroupSizeY": 1024,
                "MaxComputeWorkgroupSizeZ": 64,
                "MaxComputeWorkgroupsPerDimension": 65535,
                "MaxPushConstantSize": 2517303680
        }
}


#####################################################################
WebGPU Adapter number: 1   Type: discrete-gpu   Backend: d3d12
{
        "VendorId": 4318,
        "VendorName": "0x10de",
        "Architecture": "",
        "DeviceId": 7817,
        "Name": "0x1e89",
        "DriverDescription": "NVIDIA GeForce RTX 2060",
        "AdapterType": 0,
        "BackendType": 4
}

{
        "Limits": {
                "MaxTextureDimension1D": 16384,
                "MaxTextureDimension2D": 16384,
                "MaxTextureDimension3D": 2048,
                "MaxTextureArrayLayers": 2048,
                "MaxBindGroups": 8,
                "MaxBindingsPerBindGroup": 65535,
                "MaxDynamicUniformBuffersPerPipelineLayout": 8,
                "MaxDynamicStorageBuffersPerPipelineLayout": 4,
                "MaxSampledTexturesPerShaderStage": 1048576,
                "MaxSamplersPerShaderStage": 2048,
                "MaxStorageBuffersPerShaderStage": 262144,
                "MaxStorageTexturesPerShaderStage": 262144,
                "MaxUniformBuffersPerShaderStage": 1048576,
                "MaxUniformBufferBindingSize": 65536,
                "MaxStorageBufferBindingSize": 2147483648,
                "MinUniformBufferOffsetAlignment": 256,
                "MinStorageBufferOffsetAlignment": 32,
                "MaxVertexBuffers": 16,
                "MaxBufferSize": 2147483647,
                "MaxVertexAttributes": 32,
                "MaxVertexBufferArrayStride": 2048,
                "MaxInterStageShaderComponents": 60,
                "MaxInterStageShaderVariables": 0,
                "MaxColorAttachments": 0,
                "MaxColorAttachmentBytesPerSample": 0,
                "MaxComputeWorkgroupStorageSize": 16384,
                "MaxComputeInvocationsPerWorkgroup": 768,
                "MaxComputeWorkgroupSizeX": 1024,
                "MaxComputeWorkgroupSizeY": 1024,
                "MaxComputeWorkgroupSizeZ": 64,
                "MaxComputeWorkgroupsPerDimension": 65535,
                "MaxPushConstantSize": 2517303680
        }
}


#####################################################################
WebGPU Adapter number: 2   Type: cpu   Backend: d3d12
{
        "VendorId": 5140,
        "VendorName": "0x1414",
        "Architecture": "",
        "DeviceId": 140,
        "Name": "0x8c",
        "DriverDescription": "Microsoft Basic Render Driver",
        "AdapterType": 2,
        "BackendType": 4
}

{
        "Limits": {
                "MaxTextureDimension1D": 16384,
                "MaxTextureDimension2D": 16384,
                "MaxTextureDimension3D": 2048,
                "MaxTextureArrayLayers": 2048,
                "MaxBindGroups": 8,
                "MaxBindingsPerBindGroup": 65535,
                "MaxDynamicUniformBuffersPerPipelineLayout": 8,
                "MaxDynamicStorageBuffersPerPipelineLayout": 4,
                "MaxSampledTexturesPerShaderStage": 1048576,
                "MaxSamplersPerShaderStage": 2048,
                "MaxStorageBuffersPerShaderStage": 262144,
                "MaxStorageTexturesPerShaderStage": 262144,
                "MaxUniformBuffersPerShaderStage": 1048576,
                "MaxUniformBufferBindingSize": 65536,
                "MaxStorageBufferBindingSize": 2147483648,
                "MinUniformBufferOffsetAlignment": 256,
                "MinStorageBufferOffsetAlignment": 32,
                "MaxVertexBuffers": 16,
                "MaxBufferSize": 2147483647,
                "MaxVertexAttributes": 32,
                "MaxVertexBufferArrayStride": 2048,
                "MaxInterStageShaderComponents": 60,
                "MaxInterStageShaderVariables": 0,
                "MaxColorAttachments": 0,
                "MaxColorAttachmentBytesPerSample": 0,
                "MaxComputeWorkgroupStorageSize": 16384,
                "MaxComputeInvocationsPerWorkgroup": 768,
                "MaxComputeWorkgroupSizeX": 1024,
                "MaxComputeWorkgroupSizeY": 1024,
                "MaxComputeWorkgroupSizeZ": 64,
                "MaxComputeWorkgroupsPerDimension": 65535,
                "MaxPushConstantSize": 2517303680
        }
}


#####################################################################
WebGPU Adapter number: 3   Type: unknown   Backend: open-gl
{
        "VendorId": 4318,
        "VendorName": "0x10de",
        "Architecture": "",
        "DeviceId": 0,
        "Name": "0x0",
        "DriverDescription": "NVIDIA GeForce RTX 2060/PCIe/SSE2",
        "AdapterType": 3,
        "BackendType": 7
}

{
        "Limits": {
                "MaxTextureDimension1D": 32768,
                "MaxTextureDimension2D": 32768,
                "MaxTextureDimension3D": 16384,
                "MaxTextureArrayLayers": 2048,
                "MaxBindGroups": 8,
                "MaxBindingsPerBindGroup": 65535,
                "MaxDynamicUniformBuffersPerPipelineLayout": 14,
                "MaxDynamicStorageBuffersPerPipelineLayout": 16,
                "MaxSampledTexturesPerShaderStage": 16,
                "MaxSamplersPerShaderStage": 16,
                "MaxStorageBuffersPerShaderStage": 16,
                "MaxStorageTexturesPerShaderStage": 8,
                "MaxUniformBuffersPerShaderStage": 14,
                "MaxUniformBufferBindingSize": 65536,
                "MaxStorageBufferBindingSize": 2147483647,
                "MinUniformBufferOffsetAlignment": 256,
                "MinStorageBufferOffsetAlignment": 32,
                "MaxVertexBuffers": 16,
                "MaxBufferSize": 2147483647,
                "MaxVertexAttributes": 16,
                "MaxVertexBufferArrayStride": 2048,
                "MaxInterStageShaderComponents": 124,
                "MaxInterStageShaderVariables": 0,
                "MaxColorAttachments": 0,
                "MaxColorAttachmentBytesPerSample": 0,
                "MaxComputeWorkgroupStorageSize": 49152,
                "MaxComputeInvocationsPerWorkgroup": 1024,
                "MaxComputeWorkgroupSizeX": 1024,
                "MaxComputeWorkgroupSizeY": 1024,
                "MaxComputeWorkgroupSizeZ": 64,
                "MaxComputeWorkgroupsPerDimension": 65535,
                "MaxPushConstantSize": 2517303680
        }
}

[AnyCPU]

@dufguix

1. do you have full stack trace of an error?
2. could you constantly reproduce the error above?
3. do you use any rdp software?
4. what monitors are available and how they are connected to computing machine?

[kkoreilly]

@dufguix In addition to answering @AnyCPU's questions (particularly the first one), can you try replacing @main with @2230780 in your command to run the basic core example, since that contains fallback logic (#1478) that I implemented for someone else to test given that they had a similar issue.

However, regardless of whether that works, I think I see the issue in your webgpuinfo output:

Default WebGPU Adapter number: 2   Type: cpu   Backend: d3d12

We have logic we implemented to fix another issue (#1247) that tries to avoid discrete NVIDIA GPUs for now given an underlying issue in webgpu, but selecting a Microsoft Basic Render Driver CPU backend is not good. We will likely change that code to fix this issue. Thank you for reporting this.

[dufguix]

stack trace:

2025/02/24 20:25:51 panic: runtime error: index out of range [0] with length 0
2025/02/24 20:25:51
2025/02/24 20:25:51 ----- START OF STACK TRACE: -----
2025/02/24 20:25:51 goroutine 1 [running, locked to thread]:
runtime/debug.Stack()
        C:/Program Files/Go/src/runtime/debug/stack.go:26 +0x5e
cogentcore.org/core/system.HandleRecoverBase({0x7ff6de9a5f80, 0xc006d58048})
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/system/recover.go:50 +0x4b
cogentcore.org/core/core.handleRecover({0x7ff6de9a5f80, 0xc006d58048})
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/recover.go:37 +0x52
cogentcore.org/core/core.(*Stage).run.func1()
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/stage.go:333 +0x24
panic({0x7ff6de9a5f80?, 0xc006d58048?})
        C:/Program Files/Go/src/runtime/panic.go:787 +0x132
cogentcore.org/core/gpu.(*Surface).InitConfig(0xc006d60008)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/gpu/surface.go:143 +0x23f
cogentcore.org/core/gpu.(*Surface).init(0xc006d60008, 0x1d?, 0x400000002?, {0xc0037262b8?, 0xc003726258?}, 0x1, 0x0)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/gpu/surface.go:83 +0x10b
cogentcore.org/core/gpu.NewSurface(0xc003726240, 0xc0103e3530, {0x120?, 0x2b0?}, 0x1, 0x0)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/gpu/surface.go:60 +0xb8
cogentcore.org/core/system/driver/desktop.(*App).NewWindow.func2()
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/system/driver/desktop/app.go:132 +0x145
cogentcore.org/core/system/driver/base.(*App).RunOnMain(0x0?, 0x0?)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/system/driver/base/app.go:91 +0x9b
cogentcore.org/core/system/driver/desktop.(*App).NewWindow(0x7ff6df8c47c0, 0xc0002facc0?)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/system/driver/desktop/app.go:121 +0x405
cogentcore.org/core/core.newRenderWindow({0xc005fcaa20, 0x22}, {0x7ff6dea5935f, 0x10}, 0xc0002facc0)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/renderwindow.go:115 +0xa2
cogentcore.org/core/core.(*Stage).newRenderWindow(0xc0068489c0)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/mainstage.go:403 +0x2eb
cogentcore.org/core/core.(*Stage).runWindow(0xc0068489c0)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/mainstage.go:270 +0x685
cogentcore.org/core/core.(*Stage).run(0x4?)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/stage.go:336 +0x88
cogentcore.org/core/core.(*Stage).Run(0xc000000000?)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/stage.go:315 +0x7a
cogentcore.org/core/core.(*Body).RunWindow(0xc006a0e808?)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/mainstage.go:87 +0x47
cogentcore.org/core/core.(*Body).RunMainWindow(0xc0001eea88?)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/mainstage.go:47 +0x28
main.main()
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/examples/demo/demo.go:45 +0xcf

2025/02/24 20:25:51 ----- END OF STACK TRACE -----
2025/02/24 20:25:51 SAVED CRASH LOG TO C:\Users\theuser\AppData\Roaming\Cogent\ Core\ Demo\crash-logs\crash_2025-02-24_20-25-51
2025/02/24 20:25:51 panic: runtime error: index out of range [0] with length 0
2025/02/24 20:25:51
2025/02/24 20:25:51 ----- START OF STACK TRACE: -----
2025/02/24 20:25:51 goroutine 1 [running, locked to thread]:
runtime/debug.Stack()
        C:/Program Files/Go/src/runtime/debug/stack.go:26 +0x5e
cogentcore.org/core/system.HandleRecoverBase({0x7ff6de9a5f80, 0xc006d580a8})
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/system/recover.go:50 +0x4b
cogentcore.org/core/core.handleRecover({0x7ff6de9a5f80, 0xc006d580a8})
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/recover.go:37 +0x52
cogentcore.org/core/core.(*Stage).run.func1()
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/stage.go:333 +0x24
panic({0x7ff6de9a5f80?, 0xc006d580a8?})
        C:/Program Files/Go/src/runtime/panic.go:787 +0x132
cogentcore.org/core/gpu.(*Surface).InitConfig(0xc006d60308)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/gpu/surface.go:143 +0x23f
cogentcore.org/core/gpu.(*Surface).init(0xc006d60308, 0x7ff6ddaf2e26?, 0x0?, {0x0?, 0xc013bdd73c?}, 0x1, 0x0)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/gpu/surface.go:83 +0x10b
cogentcore.org/core/gpu.NewSurface(0xc003726240, 0xc013bdd750, {0x120?, 0x2b0?}, 0x1, 0x0)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/gpu/surface.go:60 +0xb8
cogentcore.org/core/system/driver/desktop.(*App).NewWindow.func2()
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/system/driver/desktop/app.go:132 +0x145
cogentcore.org/core/system/driver/base.(*App).RunOnMain(0x0?, 0x0?)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/system/driver/base/app.go:91 +0x9b
cogentcore.org/core/system/driver/desktop.(*App).NewWindow(0x7ff6df8c47c0, 0xc000096420?)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/system/driver/desktop/app.go:121 +0x405
cogentcore.org/core/core.newRenderWindow({0xc0134a6640, 0x37}, {0xc0134808a0, 0x25}, 0xc000096420)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/renderwindow.go:115 +0xa2
cogentcore.org/core/core.(*Stage).newRenderWindow(0xc0134de000)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/mainstage.go:403 +0x2eb
cogentcore.org/core/core.(*Stage).runWindow(0xc0134de000)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/mainstage.go:270 +0x685
cogentcore.org/core/core.(*Stage).run(0x1?)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/stage.go:336 +0x88
cogentcore.org/core/core.(*Stage).Run(0x7ff600000000?)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/stage.go:315 +0x7a
cogentcore.org/core/core.(*Body).RunWindow(0x0?)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/mainstage.go:87 +0x47
cogentcore.org/core/core.handleRecover({0x7ff6de9a5f80, 0xc006d58048})
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/recover.go:83 +0x457
cogentcore.org/core/core.(*Stage).run.func1()
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/stage.go:333 +0x24
panic({0x7ff6de9a5f80?, 0xc006d58048?})
        C:/Program Files/Go/src/runtime/panic.go:787 +0x132
cogentcore.org/core/gpu.(*Surface).InitConfig(0xc006d60008)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/gpu/surface.go:143 +0x23f
cogentcore.org/core/gpu.(*Surface).init(0xc006d60008, 0x1d?, 0x400000002?, {0xc0037262b8?, 0xc003726258?}, 0x1, 0x0)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/gpu/surface.go:83 +0x10b
cogentcore.org/core/gpu.NewSurface(0xc003726240, 0xc0103e3530, {0x120?, 0x2b0?}, 0x1, 0x0)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/gpu/surface.go:60 +0xb8
cogentcore.org/core/system/driver/desktop.(*App).NewWindow.func2()
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/system/driver/desktop/app.go:132 +0x145
cogentcore.org/core/system/driver/base.(*App).RunOnMain(0x0?, 0x0?)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/system/driver/base/app.go:91 +0x9b
cogentcore.org/core/system/driver/desktop.(*App).NewWindow(0x7ff6df8c47c0, 0xc0002facc0?)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/system/driver/desktop/app.go:121 +0x405
cogentcore.org/core/core.newRenderWindow({0xc005fcaa20, 0x22}, {0x7ff6dea5935f, 0x10}, 0xc0002facc0)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/renderwindow.go:115 +0xa2
cogentcore.org/core/core.(*Stage).newRenderWindow(0xc0068489c0)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/mainstage.go:403 +0x2eb
cogentcore.org/core/core.(*Stage).runWindow(0xc0068489c0)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/mainstage.go:270 +0x685
cogentcore.org/core/core.(*Stage).run(0x4?)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/stage.go:336 +0x88
cogentcore.org/core/core.(*Stage).Run(0xc000000000?)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/stage.go:315 +0x7a
cogentcore.org/core/core.(*Body).RunWindow(0xc006a0e808?)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/mainstage.go:87 +0x47
cogentcore.org/core/core.(*Body).RunMainWindow(0xc0001eea88?)
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/core/mainstage.go:47 +0x28
main.main()
        C:/Users/theuser/go/pkg/mod/cogentcore.org/core@v0.3.9-0.20250215173130-01c163bb0de1/examples/demo/demo.go:45 +0xcf

2025/02/24 20:25:51 ----- END OF STACK TRACE -----
2025/02/24 20:25:51 SAVED CRASH LOG TO C:\Users\theuser\AppData\Roaming\Cogent\ Core\ Demo\crash-logs\crash_2025-02-24_20-25-51
exit status 0xc000013a

[dufguix]

could you constantly reproduce the error above?

yes on my desktop. But on my laptop, no problemo.

do you use any rdp software?

no, I don't. Classic desktop machine with nvidia gpu.

what monitors are available and how they are connected to computing machine?

21:9 format. display port cable -> gpu

[dufguix]

can you try replacing @main with @2230780

doesn't work

[kkoreilly]

@dufguix Okay, thank you for that information. The stack trace confirms what I suspected. Can you try setting the env variable GPU_DEVICE=1 and then run again (on main branch)? If that works, then the GPU selection logic is the issue and we can fix it.

[dufguix]

Doesnt work.

powershell set env var with:
$env:GPU_DEVICE="1"

then:
go run cogentcore.org/core/examples/demo@main

---

does it make sense that go run github.com/cogentcore/webgpu/examples/triangle@main works ?

[kkoreilly]

@dufguix Hmm. Can you please try running webgpuinfo again with that env variable set? If the env variable is registering correctly, then it should say something different than previously for the Default WebGPU Adapter number... first line (it should say number 1 and type discrete-gpu). If you can try that and paste the output here, that would be helpful.

It does make some sense that the triangle example works, as that doesn't use our GPU selection logic, which I still suspect is the issue, although your update makes me less sure. Thank you for helping debug this.

[dufguix]

yes this is correct:
Default WebGPU Adapter number: 1 Type: discrete-gpu Backend: d3d12

[dufguix]

some updates !
From the beginning, I use a single wide screen.
But I have a second screen (turned off) with an HDMI switch (several computers on it).
Once the hdmi switch unplugged from my nvidia gpu, it works with GPU_DEVICE=0.

Here webgpuinfo again:

Default WebGPU Adapter number: 0   Type: discrete-gpu   Backend: vulkan
Set the GPU_DEVICE environment variable to an adapter number to select a different GPU

#####################################################################
WebGPU Adapter number: 0   Type: discrete-gpu   Backend: vulkan
{
        "VendorId": 4318,
        "VendorName": "0x10de",
        "Architecture": "",
        "DeviceId": 7817,
        "Name": "0x1e89",
        "DriverDescription": "NVIDIA GeForce RTX 2060",
        "AdapterType": 0,
        "BackendType": 6
}

{
        "Limits": {
                "MaxTextureDimension1D": 32768,
                "MaxTextureDimension2D": 32768,
                "MaxTextureDimension3D": 16384,
                "MaxTextureArrayLayers": 2048,
                "MaxBindGroups": 8,
                "MaxBindingsPerBindGroup": 1000,
                "MaxDynamicUniformBuffersPerPipelineLayout": 15,
                "MaxDynamicStorageBuffersPerPipelineLayout": 16,
                "MaxSampledTexturesPerShaderStage": 1048576,
                "MaxSamplersPerShaderStage": 1048576,
                "MaxStorageBuffersPerShaderStage": 1048576,
                "MaxStorageTexturesPerShaderStage": 1048576,
                "MaxUniformBuffersPerShaderStage": 1048576,
                "MaxUniformBufferBindingSize": 65536,
                "MaxStorageBufferBindingSize": 2147483648,
                "MinUniformBufferOffsetAlignment": 64,
                "MinStorageBufferOffsetAlignment": 32,
                "MaxVertexBuffers": 16,
                "MaxBufferSize": 18446744073709551615,
                "MaxVertexAttributes": 32,
                "MaxVertexBufferArrayStride": 2048,
                "MaxInterStageShaderComponents": 128,
                "MaxInterStageShaderVariables": 0,
                "MaxColorAttachments": 0,
                "MaxColorAttachmentBytesPerSample": 0,
                "MaxComputeWorkgroupStorageSize": 49152,
                "MaxComputeInvocationsPerWorkgroup": 1024,
                "MaxComputeWorkgroupSizeX": 1024,
                "MaxComputeWorkgroupSizeY": 1024,
                "MaxComputeWorkgroupSizeZ": 64,
                "MaxComputeWorkgroupsPerDimension": 65535,
                "MaxPushConstantSize": 2354119040
        }
}


#####################################################################
WebGPU Adapter number: 1   Type: discrete-gpu   Backend: d3d12
{
        "VendorId": 4318,
        "VendorName": "0x10de",
        "Architecture": "",
        "DeviceId": 7817,
        "Name": "0x1e89",
        "DriverDescription": "NVIDIA GeForce RTX 2060",
        "AdapterType": 0,
        "BackendType": 4
}

{
        "Limits": {
                "MaxTextureDimension1D": 16384,
                "MaxTextureDimension2D": 16384,
                "MaxTextureDimension3D": 2048,
                "MaxTextureArrayLayers": 2048,
                "MaxBindGroups": 8,
                "MaxBindingsPerBindGroup": 65535,
                "MaxDynamicUniformBuffersPerPipelineLayout": 8,
                "MaxDynamicStorageBuffersPerPipelineLayout": 4,
                "MaxSampledTexturesPerShaderStage": 1048576,
                "MaxSamplersPerShaderStage": 2048,
                "MaxStorageBuffersPerShaderStage": 262144,
                "MaxStorageTexturesPerShaderStage": 262144,
                "MaxUniformBuffersPerShaderStage": 1048576,
                "MaxUniformBufferBindingSize": 65536,
                "MaxStorageBufferBindingSize": 2147483648,
                "MinUniformBufferOffsetAlignment": 256,
                "MinStorageBufferOffsetAlignment": 32,
                "MaxVertexBuffers": 16,
                "MaxBufferSize": 2147483647,
                "MaxVertexAttributes": 32,
                "MaxVertexBufferArrayStride": 2048,
                "MaxInterStageShaderComponents": 60,
                "MaxInterStageShaderVariables": 0,
                "MaxColorAttachments": 0,
                "MaxColorAttachmentBytesPerSample": 0,
                "MaxComputeWorkgroupStorageSize": 16384,
                "MaxComputeInvocationsPerWorkgroup": 768,
                "MaxComputeWorkgroupSizeX": 1024,
                "MaxComputeWorkgroupSizeY": 1024,
                "MaxComputeWorkgroupSizeZ": 64,
                "MaxComputeWorkgroupsPerDimension": 65535,
                "MaxPushConstantSize": 2354119040
        }
}


#####################################################################
WebGPU Adapter number: 2   Type: cpu   Backend: d3d12
{
        "VendorId": 5140,
        "VendorName": "0x1414",
        "Architecture": "",
        "DeviceId": 140,
        "Name": "0x8c",
        "DriverDescription": "Microsoft Basic Render Driver",
        "AdapterType": 2,
        "BackendType": 4
}

{
        "Limits": {
                "MaxTextureDimension1D": 16384,
                "MaxTextureDimension2D": 16384,
                "MaxTextureDimension3D": 2048,
                "MaxTextureArrayLayers": 2048,
                "MaxBindGroups": 8,
                "MaxBindingsPerBindGroup": 65535,
                "MaxDynamicUniformBuffersPerPipelineLayout": 8,
                "MaxDynamicStorageBuffersPerPipelineLayout": 4,
                "MaxSampledTexturesPerShaderStage": 1048576,
                "MaxSamplersPerShaderStage": 2048,
                "MaxStorageBuffersPerShaderStage": 262144,
                "MaxStorageTexturesPerShaderStage": 262144,
                "MaxUniformBuffersPerShaderStage": 1048576,
                "MaxUniformBufferBindingSize": 65536,
                "MaxStorageBufferBindingSize": 2147483648,
                "MinUniformBufferOffsetAlignment": 256,
                "MinStorageBufferOffsetAlignment": 32,
                "MaxVertexBuffers": 16,
                "MaxBufferSize": 2147483647,
                "MaxVertexAttributes": 32,
                "MaxVertexBufferArrayStride": 2048,
                "MaxInterStageShaderComponents": 60,
                "MaxInterStageShaderVariables": 0,
                "MaxColorAttachments": 0,
                "MaxColorAttachmentBytesPerSample": 0,
                "MaxComputeWorkgroupStorageSize": 16384,
                "MaxComputeInvocationsPerWorkgroup": 768,
                "MaxComputeWorkgroupSizeX": 1024,
                "MaxComputeWorkgroupSizeY": 1024,
                "MaxComputeWorkgroupSizeZ": 64,
                "MaxComputeWorkgroupsPerDimension": 65535,
                "MaxPushConstantSize": 2354119040
        }
}


#####################################################################
WebGPU Adapter number: 3   Type: unknown   Backend: open-gl
{
        "VendorId": 4318,
        "VendorName": "0x10de",
        "Architecture": "",
        "DeviceId": 0,
        "Name": "0x0",
        "DriverDescription": "NVIDIA GeForce RTX 2060/PCIe/SSE2",
        "AdapterType": 3,
        "BackendType": 7
}

{
        "Limits": {
                "MaxTextureDimension1D": 32768,
                "MaxTextureDimension2D": 32768,
                "MaxTextureDimension3D": 16384,
                "MaxTextureArrayLayers": 2048,
                "MaxBindGroups": 8,
                "MaxBindingsPerBindGroup": 65535,
                "MaxDynamicUniformBuffersPerPipelineLayout": 14,
                "MaxDynamicStorageBuffersPerPipelineLayout": 16,
                "MaxSampledTexturesPerShaderStage": 16,
                "MaxSamplersPerShaderStage": 16,
                "MaxStorageBuffersPerShaderStage": 16,
                "MaxStorageTexturesPerShaderStage": 8,
                "MaxUniformBuffersPerShaderStage": 14,
                "MaxUniformBufferBindingSize": 65536,
                "MaxStorageBufferBindingSize": 2147483647,
                "MinUniformBufferOffsetAlignment": 256,
                "MinStorageBufferOffsetAlignment": 32,
                "MaxVertexBuffers": 16,
                "MaxBufferSize": 2147483647,
                "MaxVertexAttributes": 16,
                "MaxVertexBufferArrayStride": 2048,
                "MaxInterStageShaderComponents": 124,
                "MaxInterStageShaderVariables": 0,
                "MaxColorAttachments": 0,
                "MaxColorAttachmentBytesPerSample": 0,
                "MaxComputeWorkgroupStorageSize": 49152,
                "MaxComputeInvocationsPerWorkgroup": 1024,
                "MaxComputeWorkgroupSizeX": 1024,
                "MaxComputeWorkgroupSizeY": 1024,
                "MaxComputeWorkgroupSizeZ": 64,
                "MaxComputeWorkgroupsPerDimension": 65535,
                "MaxPushConstantSize": 2354119040
        }
}

[dufguix]

correction: I re-plugged my second screen. It works...
BUT I have to specify $env:GPU_DEVICE="0"

IMO you should look into the device selection function when env var is NOT specified.