VkPipelineRasterizationConservativeStateCreateInfoEXT

If the pNext chain of VkPipelineRasterizationStateCreateInfo includes a VkPipelineRasterizationConservativeStateCreateInfoEXT structure, then that structure includes parameters controlling conservative rasterization.

VkPipelineRasterizationConservativeStateCreateInfoEXT is defined as:

typedef struct VkPipelineRasterizationConservativeStateCreateInfoEXT {
    VkStructureType sType;
    const void* pNext;
    VkPipelineRasterizationConservativeStateCreateFlagsEXT flags;
    VkConservativeRasterizationModeEXT conservativeRasterizationMode;
    float extraPrimitiveOverestimationSize;
} VkPipelineRasterizationConservativeStateCreateInfoEXT;

• sType is a VkStructureType value identifying this structure.
• pNext is NULL or a pointer to a structure extending this structure.
• flags is reserved for future use.
• conservativeRasterizationMode is the conservative rasterization mode to use.
• extraPrimitiveOverestimationSize is the extra size in pixels to increase the generating primitive during conservative rasterization at each of its edges in X and Y equally in screen space beyond the base overestimation specified in VkPhysicalDeviceConservativeRasterizationPropertiesEXT::primitiveOverestimationSize. If conservativeRasterizationMode is not VK_CONSERVATIVE_RASTERIZATION_MODE_OVERESTIMATE_EXT, this value is ignored.

If this structure is not included in the pNext chain, conservativeRasterizationMode is considered to be VK_CONSERVATIVE_RASTERIZATION_MODE_DISABLED_EXT, and conservative rasterization is disabled.

Polygon rasterization can be made conservative by setting conservativeRasterizationMode to VK_CONSERVATIVE_RASTERIZATION_MODE_OVERESTIMATE_EXT or VK_CONSERVATIVE_RASTERIZATION_MODE_UNDERESTIMATE_EXT in VkPipelineRasterizationConservativeStateCreateInfoEXT.