VK_EXT_discard_rectangles(3) Manual Page

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This extension provides additional orthogonally aligned “discard rectangles” specified in framebuffer-space coordinates that restrict rasterization of all points, lines and triangles.

From zero to an implementation-dependent limit (specified by maxDiscardRectangles) number of discard rectangles can be operational at once. When one or more discard rectangles are active, rasterized fragments can either survive if the fragment is within any of the operational discard rectangles (VK_DISCARD_RECTANGLE_MODE_INCLUSIVE_EXT mode) or be rejected if the fragment is within any of the operational discard rectangles (VK_DISCARD_RECTANGLE_MODE_EXCLUSIVE_EXT mode).

These discard rectangles operate orthogonally to the existing scissor test functionality. The discard rectangles can be different for each physical device in a device group by specifying the device mask and setting discard rectangle dynamic state.

VkDiscardRectangleModeEXT, VkPhysicalDeviceDiscardRectanglePropertiesEXT, VkPipelineDiscardRectangleStateCreateFlagsEXT, VkPipelineDiscardRectangleStateCreateInfoEXT, vkCmdSetDiscardRectangleEXT

For more information, see the Vulkan Specification

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