# VkSamplerReductionMode(3) Manual Page

## Name

VkSamplerReductionMode - Specify reduction mode for texture filtering

## C Specification

Reduction modes are specified by VkSamplerReductionMode, which takes values:

    typedef enum VkSamplerReductionMode {
        VK_SAMPLER_REDUCTION_MODE_WEIGHTED_AVERAGE = 0,
        VK_SAMPLER_REDUCTION_MODE_MIN = 1,
        VK_SAMPLER_REDUCTION_MODE_MAX = 2,
        VK_SAMPLER_REDUCTION_MODE_WEIGHTED_AVERAGE_EXT = VK_SAMPLER_REDUCTION_MODE_WEIGHTED_AVERAGE,
        VK_SAMPLER_REDUCTION_MODE_MIN_EXT = VK_SAMPLER_REDUCTION_MODE_MIN,
        VK_SAMPLER_REDUCTION_MODE_MAX_EXT = VK_SAMPLER_REDUCTION_MODE_MAX,
        VK_SAMPLER_REDUCTION_MODE_MAX_ENUM = 0x7FFFFFFF
    } VkSamplerReductionMode;

or the equivalent

    typedef VkSamplerReductionMode VkSamplerReductionModeEXT;

## Description

- `VK_SAMPLER_REDUCTION_MODE_WEIGHTED_AVERAGE` specifies that texel values are combined by computing a weighted average of values in the footprint, using weights as specified in the image operations chapter.

- `VK_SAMPLER_REDUCTION_MODE_MIN` specifies that texel values are combined by taking the component-wise minimum of values in the footprint with non-zero weights.

- `VK_SAMPLER_REDUCTION_MODE_MAX` specifies that texel values are combined by taking the component-wise maximum of values in the footprint with non-zero weights.

## See Also

VkSamplerReductionModeCreateInfo

## Document Notes

For more information, see the Vulkan Specification

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

## Copyright

Copyright (c) 2014-2020 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.