C Specification
If the fragmentShadingRateEnums feature is enabled, fragment shading
rates may be specified using the VkFragmentShadingRateNV enumerated
type defined as:
// Provided by VK_NV_fragment_shading_rate_enums
typedef enum VkFragmentShadingRateNV {
VK_FRAGMENT_SHADING_RATE_1_INVOCATION_PER_PIXEL_NV = 0,
VK_FRAGMENT_SHADING_RATE_1_INVOCATION_PER_1X2_PIXELS_NV = 1,
VK_FRAGMENT_SHADING_RATE_1_INVOCATION_PER_2X1_PIXELS_NV = 4,
VK_FRAGMENT_SHADING_RATE_1_INVOCATION_PER_2X2_PIXELS_NV = 5,
VK_FRAGMENT_SHADING_RATE_1_INVOCATION_PER_2X4_PIXELS_NV = 6,
VK_FRAGMENT_SHADING_RATE_1_INVOCATION_PER_4X2_PIXELS_NV = 9,
VK_FRAGMENT_SHADING_RATE_1_INVOCATION_PER_4X4_PIXELS_NV = 10,
VK_FRAGMENT_SHADING_RATE_2_INVOCATIONS_PER_PIXEL_NV = 11,
VK_FRAGMENT_SHADING_RATE_4_INVOCATIONS_PER_PIXEL_NV = 12,
VK_FRAGMENT_SHADING_RATE_8_INVOCATIONS_PER_PIXEL_NV = 13,
VK_FRAGMENT_SHADING_RATE_16_INVOCATIONS_PER_PIXEL_NV = 14,
VK_FRAGMENT_SHADING_RATE_NO_INVOCATIONS_NV = 15,
} VkFragmentShadingRateNV;Description
-
VK_FRAGMENT_SHADING_RATE_1_INVOCATION_PER_PIXEL_NVspecifies a fragment size of 1x1 pixels. -
VK_FRAGMENT_SHADING_RATE_1_INVOCATION_PER_1X2_PIXELS_NVspecifies a fragment size of 1x2 pixels. -
VK_FRAGMENT_SHADING_RATE_1_INVOCATION_PER_2X1_PIXELS_NVspecifies a fragment size of 2x1 pixels. -
VK_FRAGMENT_SHADING_RATE_1_INVOCATION_PER_2X2_PIXELS_NVspecifies a fragment size of 2x2 pixels. -
VK_FRAGMENT_SHADING_RATE_1_INVOCATION_PER_2X4_PIXELS_NVspecifies a fragment size of 2x4 pixels. -
VK_FRAGMENT_SHADING_RATE_1_INVOCATION_PER_4X2_PIXELS_NVspecifies a fragment size of 4x2 pixels. -
VK_FRAGMENT_SHADING_RATE_1_INVOCATION_PER_4X4_PIXELS_NVspecifies a fragment size of 4x4 pixels. -
VK_FRAGMENT_SHADING_RATE_2_INVOCATIONS_PER_PIXEL_NVspecifies a fragment size of 1x1 pixels, with two fragment shader invocations per fragment. -
VK_FRAGMENT_SHADING_RATE_4_INVOCATIONS_PER_PIXEL_NVspecifies a fragment size of 1x1 pixels, with four fragment shader invocations per fragment. -
VK_FRAGMENT_SHADING_RATE_8_INVOCATIONS_PER_PIXEL_NVspecifies a fragment size of 1x1 pixels, with eight fragment shader invocations per fragment. -
VK_FRAGMENT_SHADING_RATE_16_INVOCATIONS_PER_PIXEL_NVspecifies a fragment size of 1x1 pixels, with sixteen fragment shader invocations per fragment. -
VK_FRAGMENT_SHADING_RATE_NO_INVOCATIONS_NVspecifies that any portions of a primitive that use that shading rate should be discarded without invoking any fragment shader.
To use the shading rates
VK_FRAGMENT_SHADING_RATE_2_INVOCATIONS_PER_PIXEL_NV,
VK_FRAGMENT_SHADING_RATE_4_INVOCATIONS_PER_PIXEL_NV,
VK_FRAGMENT_SHADING_RATE_8_INVOCATIONS_PER_PIXEL_NV, and
VK_FRAGMENT_SHADING_RATE_16_INVOCATIONS_PER_PIXEL_NV as a pipeline,
primitive, or attachment shading rate, the
supersampleFragmentShadingRates feature must be enabled.
To use the shading rate VK_FRAGMENT_SHADING_RATE_NO_INVOCATIONS_NV as
a pipeline, primitive, or attachment shading rate, the
noInvocationFragmentShadingRates feature must be enabled.
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.