## C Specification

The VkPipelineCoverageToColorStateCreateInfoNV structure is defined as:

// Provided by VK_NV_fragment_coverage_to_color
typedef struct VkPipelineCoverageToColorStateCreateInfoNV {
VkStructureType                                sType;
const void*                                    pNext;
VkPipelineCoverageToColorStateCreateFlagsNV    flags;
VkBool32                                       coverageToColorEnable;
uint32_t                                       coverageToColorLocation;
} VkPipelineCoverageToColorStateCreateInfoNV;

## Members

• sType is the type of this structure.

• pNext is NULL or a pointer to a structure extending this structure.

• flags is reserved for future use.

• coverageToColorEnable controls whether the fragment coverage value replaces a fragment color output.

• coverageToColorLocation controls which fragment shader color output value is replaced.

## Description

If the pNext chain of VkPipelineMultisampleStateCreateInfo includes a VkPipelineCoverageToColorStateCreateInfoNV structure, then that structure controls whether the fragment coverage is substituted for a fragment color output and, if so, which output is replaced.

If coverageToColorEnable is VK_TRUE, the coverage mask replaces the first component of the color value corresponding to the fragment shader output location with Location equal to coverageToColorLocation and Index equal to zero. If the color attachment format has fewer bits than the coverage mask, the low bits of the sample coverage mask are taken without any clamping. If the color attachment format has more bits than the coverage mask, the high bits of the sample coverage mask are filled with zeros.

If coverageToColorEnable is VK_FALSE, these operations are skipped. If this structure is not included in the pNext chain, it is as if coverageToColorEnable is VK_FALSE.

Valid Usage
• VUID-VkPipelineCoverageToColorStateCreateInfoNV-coverageToColorEnable-01404
If coverageToColorEnable is VK_TRUE, then the render pass subpass indicated by VkGraphicsPipelineCreateInfo::renderPass and VkGraphicsPipelineCreateInfo::subpass must have a color attachment at the location selected by coverageToColorLocation, with a VkFormat of VK_FORMAT_R8_UINT, VK_FORMAT_R8_SINT, VK_FORMAT_R16_UINT, VK_FORMAT_R16_SINT, VK_FORMAT_R32_UINT, or VK_FORMAT_R32_SINT

Valid Usage (Implicit)
• VUID-VkPipelineCoverageToColorStateCreateInfoNV-sType-sType
sType must be VK_STRUCTURE_TYPE_PIPELINE_COVERAGE_TO_COLOR_STATE_CREATE_INFO_NV

flags must be 0