EXTSamplerFilterMinmax (LWJGL 3.2.3 SNAPSHOT)

java.lang.Object
- org.lwjgl.vulkan.EXTSamplerFilterMinmax

```
public final class EXTSamplerFilterMinmax
extends java.lang.Object
```
In unextended Vulkan, minification and magnification filters such as LINEAR allow sampled image lookups to return a filtered texel value produced by computing a weighted average of a collection of texels in the neighborhood of the texture coordinate provided.
This extension provides a new sampler parameter which allows applications to produce a filtered texel value by computing a component-wise minimum (MIN) or maximum (MAX) of the texels that would normally be averaged. The reduction mode is orthogonal to the minification and magnification filter parameters. The filter parameters are used to identify the set of texels used to produce a final filtered value; the reduction mode identifies how these texels are combined.

Examples

None.
Name String

VK_EXT_sampler_filter_minmax

Extension Type

Device extension

Registered Extension Number

131

Revision

2

Extension and Version Dependencies
- Requires Vulkan 1.0
- Requires VK_KHR_get_physical_device_properties2
Contact
- Jeff Bolz jeffbolznv
Last Modified Date

2017-05-19

IP Status

No known IP claims.

Contributors
- Jeff Bolz, NVIDIA
- Piers Daniell, NVIDIA

Field Summary

Fields
Modifier and Type	Field	Description
`static java.lang.String`	`VK_EXT_SAMPLER_FILTER_MINMAX_EXTENSION_NAME`	The extension name.
`static int`	`VK_EXT_SAMPLER_FILTER_MINMAX_SPEC_VERSION`	The extension specification version.
`static int`	`VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_MINMAX_BIT_EXT`	Extends `VkFormatFeatureFlagBits`.
`static int`	`VK_SAMPLER_REDUCTION_MODE_MAX_EXT VK_SAMPLER_REDUCTION_MODE_MIN_EXT VK_SAMPLER_REDUCTION_MODE_WEIGHTED_AVERAGE_EXT`	VkSamplerReductionModeEXT - Specify reduction mode for texture filtering
`static int`	`VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SAMPLER_FILTER_MINMAX_PROPERTIES_EXT VK_STRUCTURE_TYPE_SAMPLER_REDUCTION_MODE_CREATE_INFO_EXT`	Extends `VkStructureType`.

Method Summary
- Methods inherited from class java.lang.Object
  equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - VK_EXT_SAMPLER_FILTER_MINMAX_SPEC_VERSION
    
    The extension specification version.
  - VK_EXT_SAMPLER_FILTER_MINMAX_EXTENSION_NAME
    
    The extension name.
  - VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SAMPLER_FILTER_MINMAX_PROPERTIES_EXT, VK_STRUCTURE_TYPE_SAMPLER_REDUCTION_MODE_CREATE_INFO_EXT
    Extends VkStructureType.
    Enum values:
    
    STRUCTURE_TYPE_PHYSICAL_DEVICE_SAMPLER_FILTER_MINMAX_PROPERTIES_EXT
    
    STRUCTURE_TYPE_SAMPLER_REDUCTION_MODE_CREATE_INFO_EXT
  - VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_MINMAX_BIT_EXT
    
    Extends VkFormatFeatureFlagBits.
  - VK_SAMPLER_REDUCTION_MODE_WEIGHTED_AVERAGE_EXT, VK_SAMPLER_REDUCTION_MODE_MIN_EXT, VK_SAMPLER_REDUCTION_MODE_MAX_EXT
    VkSamplerReductionModeEXT - Specify reduction mode for texture filtering
    Description
    
    SAMPLER_REDUCTION_MODE_WEIGHTED_AVERAGE_EXT 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.
    
    SAMPLER_REDUCTION_MODE_MIN_EXT specifies that texel values are combined by taking the component-wise minimum of values in the footprint with non-zero weights.
    
    SAMPLER_REDUCTION_MODE_MAX_EXT specifies that texel values are combined by taking the component-wise maximum of values in the footprint with non-zero weights.
    
    See Also
    
    VkSamplerReductionModeCreateInfoEXT