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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 a new way to write shaders to be used with multiview subpasses, where the attributes for all views are written out by a single invocation of the vertex processing stages. Related SPIR-V and GLSL extensions {@code SPV_NVX_multiview_per_view_attributes} and {@code GL_NVX_multiview_per_view_attributes} introduce per-view position and viewport mask attributes arrays, and this extension defines how those per-view attribute arrays are interpreted by Vulkan. Pipelines using per-view attributes may only execute the vertex processing stages once for all views rather than once per-view, which reduces redundant shading work.
 * 
 * A subpass creation flag controls whether the subpass uses this extension. A subpass must either exclusively use this extension or not use it at all.
 * 
 * Some Vulkan implementations only support the position attribute varying between views in the X component. A subpass can declare via a second creation flag whether all pipelines compiled for this subpass will obey this restriction.
 * 
 * Shaders that use the new per-view outputs (e.g. {@code gl_PositionPerViewNV}) must also write the non-per-view output ({@code gl_Position}), and the values written must be such that {@code gl_Position = gl_PositionPerViewNV[gl_ViewIndex]} for all views in the subpass. Implementations are free to either use the per-view outputs or the non-per-view outputs, whichever would be more efficient.
 * 
 * If {@link NVViewportArray2 VK_NV_viewport_array2} is not also supported and enabled, the per-view viewport mask must not be used.
 * 
 * Examples
 * 
 *  * #version 450 core
 * 
 * #extension GL_KHX_multiview : enable
 * #extension GL_NVX_multiview_per_view_attributes : enable
 * 
 * layout(location = 0) in vec4 position;
 * layout(set = 0, binding = 0) uniform Block { mat4 mvpPerView[2]; } buf;
 * 
 * void main()
 * {
 *     // Output both per-view positions and gl_Position as a function
 *     // of gl_ViewIndex
 *     gl_PositionPerViewNV[0] = buf.mvpPerView[0] * position;
 *     gl_PositionPerViewNV[1] = buf.mvpPerView[1] * position;
 *     gl_Position = buf.mvpPerView[gl_ViewIndex] * position;
 * }
 * 
 * 
 * Name String
 * {@code VK_NVX_multiview_per_view_attributes}
 * Extension Type
 * Device extension
 * Registered Extension Number
 * 98
 * Revision
 * 1
 * Extension and Version Dependencies
 * 
 * Requires Vulkan 1.0
 * Requires {@link KHXMultiview VK_KHX_multiview}
 * 
 * Contact
 * 
 * Jeff Bolz @jbolz
 * 
 * Last Modified Date
 * 2017-01-13
 * IP Status
 * No known IP claims.
 * Interactions and External Dependencies
 * 
 * This extension requires the SPV_NVX_multiview_per_view_attributes SPIR-V extension.
 * This extension requires the GL_NVX_multiview_per_view_attributes extension for GLSL source languages.
 * This extension interacts with {@link NVViewportArray2 VK_NV_viewport_array2}.
 * 
 * Contributors
 * 
 * Jeff Bolz, NVIDIA
 * Daniel Koch, NVIDIA
 * 
 * 
 */
public final class NVXMultiviewPerViewAttributes {

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

    /** The extension name. */
    public static final String VK_NVX_MULTIVIEW_PER_VIEW_ATTRIBUTES_EXTENSION_NAME = "VK_NVX_multiview_per_view_attributes";

    /** Extends {@code VkStructureType}. */
    public static final int VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MULTIVIEW_PER_VIEW_ATTRIBUTES_PROPERTIES_NVX = 1000097000;

    /**
     * Extends {@code VkSubpassDescriptionFlagBits}.
     * 
     * Enum values:
     * 
     * 
     * {@link #VK_SUBPASS_DESCRIPTION_PER_VIEW_ATTRIBUTES_BIT_NVX SUBPASS_DESCRIPTION_PER_VIEW_ATTRIBUTES_BIT_NVX}
     * {@link #VK_SUBPASS_DESCRIPTION_PER_VIEW_POSITION_X_ONLY_BIT_NVX SUBPASS_DESCRIPTION_PER_VIEW_POSITION_X_ONLY_BIT_NVX}
     * 
     */
    public static final int
        VK_SUBPASS_DESCRIPTION_PER_VIEW_ATTRIBUTES_BIT_NVX      = 0x1,
        VK_SUBPASS_DESCRIPTION_PER_VIEW_POSITION_X_ONLY_BIT_NVX = 0x2;

    private NVXMultiviewPerViewAttributes() {}

}