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A new generation graphics and compute API that provides high-efficiency, cross-platform access to modern GPUs used in a wide variety of devices from PCs and consoles to mobile phones and embedded platforms.

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/*
 * Copyright LWJGL. All rights reserved.
 * License terms: https://www.lwjgl.org/license
 * MACHINE GENERATED FILE, DO NOT EDIT
 */
package org.lwjgl.vulkan;

/**
 * This extension adds support for the following SPIR-V extension in Vulkan:
 * 
 * 
 * {@code SPV_KHR_shader_ballot}
 * 
 * 
 * This extension provides the ability for a group of invocations, which execute in parallel, to do limited forms of cross-invocation communication via a group broadcast of a invocation value, or broadcast of a bitarray representing a predicate value from each invocation in the group.
 * 
 * This extension provides access to a number of additional built-in shader variables in Vulkan:
 * 
 * 
 * {@code SubgroupEqMaskKHR}, which contains the subgroup mask of the current subgroup invocation,
 * {@code SubgroupGeMaskKHR}, which contains the subgroup mask of the invocations greater than or equal to the current invocation,
 * {@code SubgroupGtMaskKHR}, which contains the subgroup mask of the invocations greater than the current invocation,
 * {@code SubgroupLeMaskKHR}, which contains the subgroup mask of the invocations less than or equal to the current invocation,
 * {@code SubgroupLtMaskKHR}, which contains the subgroup mask of the invocations less than the current invocation,
 * {@code SubgroupLocalInvocationId}, which contains the index of an invocation within a subgroup, and
 * {@code SubgroupSize}, which contains the maximum number of invocations in a subgroup.
 * 
 * 
 * Additionally, this extension provides access to the new SPIR-V instructions:
 * 
 * 
 * {@code OpSubgroupBallotKHR},
 * {@code OpSubgroupFirstInvocationKHR}, and
 * {@code OpSubgroupReadInvocationKHR},
 * 
 * 
 * When using GLSL source-based shader languages, the following variables and shader functions from GL_ARB_shader_ballot can map to these SPIR-V built-in decorations and instructions:
 * 
 * 
 * {@code in uint64_t gl_SubGroupEqMaskARB;} → {@code SubgroupEqMaskKHR},
 * {@code in uint64_t gl_SubGroupGeMaskARB;} → {@code SubgroupGeMaskKHR},
 * {@code in uint64_t gl_SubGroupGtMaskARB;} → {@code SubgroupGtMaskKHR},
 * {@code in uint64_t gl_SubGroupLeMaskARB;} → {@code SubgroupLeMaskKHR},
 * {@code in uint64_t gl_SubGroupLtMaskARB;} → {@code SubgroupLtMaskKHR},
 * {@code in uint gl_SubGroupInvocationARB;} → {@code SubgroupLocalInvocationId},
 * {@code uniform uint gl_SubGroupSizeARB;} → {@code SubgroupSize},
 * {@code ballotARB}() → {@code OpSubgroupBallotKHR},
 * {@code readFirstInvocationARB}() → {@code OpSubgroupFirstInvocationKHR}, and
 * {@code readInvocationARB}() → {@code OpSubgroupReadInvocationKHR}.
 * 
 * 
 * Deprecated by Vulkan 1.2
 * 
 * Most of the functionality in this extension is superseded by the core Vulkan 1.1 subgroup operations. However, Vulkan 1.1 required the {@code OpGroupNonUniformBroadcast} “{@code Id}” to be constant. This restriction was removed in Vulkan 1.2 with the addition of the subgroupBroadcastDynamicId feature.
 * 
 * VK_EXT_shader_subgroup_ballot
 * 
 * 
 * Name String
 * {@code VK_EXT_shader_subgroup_ballot}
 * Extension Type
 * Device extension
 * Registered Extension Number
 * 65
 * Revision
 * 1
 * Extension and Version Dependencies
 * 
 * Requires Vulkan 1.0
 * 
 * Deprecation state
 * 
 * Deprecated by Vulkan 1.2
 * 
 * Contact
 * 
 * Daniel Koch dgkoch
 * 
 * 
 * 
 * Other Extension Metadata
 * 
 * 
 * Last Modified Date
 * 2016-11-28
 * IP Status
 * No known IP claims.
 * Interactions and External Dependencies
 * 
 * This extension requires {@code SPV_KHR_shader_ballot}
 * This extension provides API support for {@code GL_ARB_shader_ballot}
 * 
 * Contributors
 * 
 * Jeff Bolz, NVIDIA
 * Neil Henning, Codeplay
 * Daniel Koch, NVIDIA Corporation
 * 
 * 
 */
public final class EXTShaderSubgroupBallot {

    /** The extension specification version. */
    public static final int VK_EXT_SHADER_SUBGROUP_BALLOT_SPEC_VERSION = 1;

    /** The extension name. */
    public static final String VK_EXT_SHADER_SUBGROUP_BALLOT_EXTENSION_NAME = "VK_EXT_shader_subgroup_ballot";

    private EXTShaderSubgroupBallot() {}

}