Shader Module

The whole process:

write GLSL---> compile it into SPIR-V --->using VkShaderModule tell Vulka: here is the compiled code, keep it

VK_DEFINE_NON_DISPATCHABLE_HANDLE(VkShaderModule)

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createShaderModule

void createShaderModule( const std::vector<char>& code, VkShaderModule* shaderModule);

• code : SPIR-V code
• VkShaderModule, handle, pointer

void LvePipeline::createShaderModule(
const std::vector<char>& code, VkShaderModule* shaderModule){
  VkShaderModuleCreateInfo createInfo{};
  createInfo.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
  createInfo.codeSize = code.size();
  createInfo.pCode = reinterpret_cast<const uint32_t*>(code.data());


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

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VkShaderModule

GLSL container on GPU, VkShaderModule is a handle

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VkShaderModuleCreateInfo

this is Vulkan struct

typedef struct VkShaderModuleCreateInfo {

  VkStructureType sType;
  const void* pNext;
  VkShaderModuleCreateFlags flags;
  size_t codeSize;
  const uint32_t* pCode;

} VkShaderModuleCreateInfo;

• sType : must be VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO
• pNexr: for extension use
• codeSize : SPIR-V code file size
• pCode : pointer point to the shader code

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vkCreateShaderModule

VKAPI_ATTR VkResult VKAPI_CALL vkCreateShaderModule(

  VkDevice device,
  const VkShaderModuleCreateInfo* pCreateInfo,
  const VkAllocationCallbacks* pAllocator,
  VkShaderModule* pShaderModule);