| include::meta/VK_EXT_sampler_filter_minmax.txt[] |
| |
| *Last Modified Date*:: |
| 2017-05-19 |
| *IP Status*:: |
| No known IP claims. |
| *Contributors*:: |
| - Jeff Bolz, NVIDIA |
| - Piers Daniell, NVIDIA |
| |
| 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. |
| |
| === New Object Types |
| |
| None. |
| |
| === New Enum Constants |
| |
| * Extending elink:VkStructureType: |
| ** ename:VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SAMPLER_FILTER_MINMAX_PROPERTIES_EXT |
| ** ename:VK_STRUCTURE_TYPE_SAMPLER_REDUCTION_MODE_CREATE_INFO_EXT |
| |
| * Extending elink:VkFormatFeatureFlagBits |
| ** ename:VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_MINMAX_BIT_EXT |
| |
| === New Enums |
| |
| * elink:VkSamplerReductionModeEXT |
| |
| === New Structures |
| |
| * slink:VkSamplerReductionModeCreateInfoEXT |
| * slink:VkPhysicalDeviceSamplerFilterMinmaxPropertiesEXT |
| |
| === New Functions |
| |
| None. |
| |
| === New Built-In Variables |
| |
| None. |
| |
| === New SPIR-V Capabilities |
| |
| None. |
| |
| === Issues |
| |
| None. |
| |
| === Examples |
| |
| None. |
| |
| === Version History |
| |
| * Revision 2, 2017-05-19 (Piers Daniell) |
| - Renamed to EXT |
| |
| * Revision 1, 2017-03-25 (Jeff Bolz) |
| - Internal revisions |
