VkAttachmentSampleCountInfoAMD

The VkAttachmentSampleCountInfoAMD or VkAttachmentSampleCountInfoNV structure is defined as:

typedef struct VkAttachmentSampleCountInfoAMD {
    VkStructureType sType;
    const void* pNext;
    uint32_t colorAttachmentCount;
    const VkSampleCountFlagBits* pColorAttachmentSamples;
    VkSampleCountFlagBits depthStencilAttachmentSamples;
} VkAttachmentSampleCountInfoAMD;

or the equivalent

typedef VkAttachmentSampleCountInfoAMD VkAttachmentSampleCountInfoNV;

• sType is a VkStructureType value identifying this structure.
• pNext is NULL or a pointer to a structure extending this structure
• colorAttachmentCount is the number of color attachments specified in a render pass instance.
• pColorAttachmentSamples is a pointer to an array of VkSampleCountFlagBits values defining the sample count of color attachments.
• depthStencilAttachmentSamples is a VkSampleCountFlagBits value defining the sample count of a depth/stencil attachment.

If VkCommandBufferInheritanceInfo::renderPass is VK_NULL_HANDLE, VK_COMMAND_BUFFER_USAGE_RENDER_PASS_CONTINUE_BIT is specified in VkCommandBufferBeginInfo::flags, and the pNext chain of VkCommandBufferInheritanceInfo includes VkAttachmentSampleCountInfoAMD, then this structure defines the sample counts of each attachment within the render pass instance. If VkAttachmentSampleCountInfoAMD is not included, the value of VkCommandBufferInheritanceRenderingInfo::rasterizationSamples is used as the sample count for each attachment. If VkCommandBufferInheritanceInfo::renderPass is not VK_NULL_HANDLE, or VK_COMMAND_BUFFER_USAGE_RENDER_PASS_CONTINUE_BIT is not specified in VkCommandBufferBeginInfo::flags, parameters of this structure are ignored.

VkAttachmentSampleCountInfoAMD can also be included in the pNext chain of VkGraphicsPipelineCreateInfo. When a graphics pipeline is created without a VkRenderPass, if this structure is included in the pNext chain of VkGraphicsPipelineCreateInfo, it specifies the sample count of attachments used for rendering. If this structure is not specified, and the pipeline does not include a VkRenderPass, the value of VkPipelineMultisampleStateCreateInfo::rasterizationSamples is used as the sample count for each attachment. If a graphics pipeline is created with a valid VkRenderPass, parameters of this structure are ignored.