org.lwjgl.vulkan

Class NVFragmentShaderBarycentric

java.lang.Object

org.lwjgl.vulkan.NVFragmentShaderBarycentric

public final class NVFragmentShaderBarycentric
extends java.lang.Object

This extension adds support for the following SPIR-V extension in Vulkan:

• SPV_NV_fragment_shader_barycentric

The extension provides access to three additional fragment shader variable decorations in SPIR-V:

• PerVertexNV, which indicates that a fragment shader input will not have interpolated values, but instead must be accessed with an extra array index that identifies one of the vertices of the primitive producing the fragment
• BaryCoordNV, which indicates that the variable is a three-component floating-point vector holding barycentric weights for the fragment produced using perspective interpolation
• BaryCoordNoPerspNV, which indicates that the variable is a three-component floating-point vector holding barycentric weights for the fragment produced using linear interpolation

When using GLSL source-based shader languages, the following variables from GL_NV_fragment_shader_barycentric maps to these SPIR-V built-in decorations:

• in vec3 gl_BaryCoordNV; → BaryCoordNV
• in vec3 gl_BaryCoordNoPerspNV; → BaryCoordNoPerspNV

GLSL variables declared using the __pervertexNV GLSL qualifier are expected to be decorated with PerVertexNV in SPIR-V.

Name String

VK_NV_fragment_shader_barycentric

Extension Type

Device extension

Registered Extension Number

204

Revision

1

Extension and Version Dependencies

• Requires Vulkan 1.0
• Requires VK_KHR_get_physical_device_properties2

Contact

• Pat Brown nvpbrown

Last Modified Date

2018-08-03

IP Status

No known IP claims.

Interactions and External Dependencies

• Requires the SPV_NV_fragment_shader_barycentric SPIR-V extension.
• Requires the GL_NV_fragment_shader_barycentric extension for GLSL source languages.

Contributors

• Pat Brown, NVIDIA
• Daniel Koch, NVIDIA

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	VK_NV_FRAGMENT_SHADER_BARYCENTRIC_EXTENSION_NAME The extension name.
static int	VK_NV_FRAGMENT_SHADER_BARYCENTRIC_SPEC_VERSION The extension specification version.
static int	VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FRAGMENT_SHADER_BARYCENTRIC_FEATURES_NV Extends VkStructureType.

Method Summary

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

VK_NV_FRAGMENT_SHADER_BARYCENTRIC_SPEC_VERSION

public static final int VK_NV_FRAGMENT_SHADER_BARYCENTRIC_SPEC_VERSION

The extension specification version.

See Also:

Constant Field Values

VK_NV_FRAGMENT_SHADER_BARYCENTRIC_EXTENSION_NAME

public static final java.lang.String VK_NV_FRAGMENT_SHADER_BARYCENTRIC_EXTENSION_NAME

The extension name.

See Also:

Constant Field Values

VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FRAGMENT_SHADER_BARYCENTRIC_FEATURES_NV

public static final int VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FRAGMENT_SHADER_BARYCENTRIC_FEATURES_NV

Extends VkStructureType.

See Also:

Constant Field Values