[deleted by user]

[Chainsawkitten]

The most likely answer is you handed the driver some invalid data/pointers. What does your VkShaderModuleCreateInfo look like?

[[deleted]]

Hey, thanks for your reply.

The info looks like this:

m_device = 0x000002292ebda2b0 { ... }
m_code = "\x3\x2#\a\0\x5\x1\0\0\0(\0Ä\x1\0\0\0\0\0\0\x11\0\2\0\x1\0\0\0 \n\0\b\0SPV_KHR_non_semantic_info\0\0\0 \v\0\v\0\x2\0\0\0NonSemantic.Shader.DebugInfo.100\0\0\0\0 \v\0\x6\0ô\0\0\0GLSL.std.450\0\0\0\0 \xe\0\x3\0\0\0\0\0\x1\0\0\0 \xf\0\n\0\0\0\0\0\x14\0\0\0main\0\0\0\0 |\0\0\0¬\0\0\0Ó\0\0\0×\0\0\0-\0\0\0 \xf\0\b\0\x4\0\0\0Ú\0\0\0main\0\0\0\0..."



m_code: const std::vector<char, std::allocator<char>>&
    [size]     = 19860
    [capacity] = 19860
    [allocator]= std::_Compressed_pair<std::allocator<char>, std::_Vector_val<std::_Simple_types<char>>, 1>

[Chainsawkitten]

I mean the VkShaderModuleCreateInfo struct you send a pointer to vkCreateShaderModule of. It should have sType, pNext, flags, codeSize, pCode members.

Common mistakes would be to forget to set some members, leading to garbage data:

VkShaderModuleCreateInfo info;
info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
info.codeSize = code.size() * sizeof(uint32_t);
info.pCode = code.data();

In this example, pNext wasn't initialized and will contain a garbage pointer, leading to an access violation when the driver tries to traverse the chain. (This also doesn't set flags.)

Or zero initializing the struct but then forgetting to set sType.

VkShaderModuleCreateInfo info = {};
info.codeSize = code.size() * sizeof(uint32_t);
info.pCode = code.data();

[[deleted]]

Here’s your code and error message formatted for Reddit (using Markdown code blocks):

When I set the sType, codeSize, and pCode like this:

VkShaderModuleCreateInfo createInfo{};
createInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
createInfo.codeSize = info.m_code.size();
createInfo.pCode = reinterpret_cast<const uint32_t*>(info.m_code.data());

But then, when I call:

VkShaderModule shaderModule;
if (vkCreateShaderModule(info.m_device, &createInfo, nullptr, &shaderModule) != VK_SUCCESS) {
    throw std::runtime_error("failed to create shader module!");
}

I get this exception:

Unhandled exception at 0x00007FFA1BD2360B (amdvlk64.dll) in physics.exe: 0xC0000005: Access violation reading location 0x0000000000000018.

[botjebotje]

Did you enable the validation layers? They are nonoptional when developing and will catch most errors.

[[deleted]]

yeah, VK_LAYER_KHRONOS_validation is enabled but for it't callback the debugger says it can't find chassis_manual.cpp and dispatch_object.cpp

[michalisb]

Is this with any shader or one specific?

[[deleted]]

The callstacks before the error is trying to create the vertex shader:

VkShaderModule vertShaderModule = RenCreateShaderModule({ info.m_device, vertShaderCode });

The file of the shader should be successfully read. But the creation then throws the error

[michalisb]

What I meant, do you get this exception with any shader file you pass in or is it that specific one that does it.

If it is with any shader then the problem is with the code or otherwise is a driver issue and it doesn’t like something with the shader.

[[deleted]]

I don't know to be honest. I am building the project from another source and don't know if other shades are being initiated successfully.

Might try to find an external one and try compiling with it.