Class NVViewportArray2
SPV_NV_viewport_array2
which allows a single primitive to be broadcast to multiple viewports and/or multiple layers. A new shader built-in output ViewportMaskNV
is provided, which allows a single primitive to be output to multiple viewports simultaneously. Also, a new SPIR-V decoration is added to control whether the effective viewport index is added into the variable decorated with the Layer
built-in decoration. These capabilities allow a single primitive to be output to multiple layers simultaneously.
This extension allows variables decorated with the Layer
and ViewportIndex
built-ins to be exported from vertex or tessellation shaders, using the ShaderViewportIndexLayerNV
capability.
This extension adds a new ViewportMaskNV
built-in decoration that is available for output variables in vertex, tessellation evaluation, and geometry shaders, and a new ViewportRelativeNV
decoration that can be added on variables decorated with Layer
when using the ShaderViewportMaskNV
capability.
When using GLSL source-based shading languages, the gl_ViewportMask
[] built-in output variable and viewport_relative
layout qualifier from GL_NV_viewport_array2
map to the ViewportMaskNV
and ViewportRelativeNV
decorations, respectively. Behaviour is described in the GL_NV_viewport_array2
extension specification.
Note
The ShaderViewportIndexLayerNV
capability is equivalent to the ShaderViewportIndexLayerEXT
capability added by VK_EXT_shader_viewport_index_layer
.
VK_NV_viewport_array2
- Name String
VK_NV_viewport_array2
- Extension Type
- Device extension
- Registered Extension Number
- 97
- Revision
- 1
- Contact
- Daniel Koch dgkoch
Other Extension Metadata
- Last Modified Date
- 2017-02-15
- Interactions and External Dependencies
- This extension requires
SPV_NV_viewport_array2
- This extension provides API support for
GL_NV_viewport_array2
- This extension requires the
geometryShader
andmultiViewport
features. - This extension interacts with the
tessellationShader
feature.
- This extension requires
- Contributors
- Piers Daniell, NVIDIA
- Jeff Bolz, NVIDIA
-
Field Details
-
VK_NV_VIEWPORT_ARRAY_2_SPEC_VERSION
public static final int VK_NV_VIEWPORT_ARRAY_2_SPEC_VERSIONThe extension specification version.- See Also:
-
VK_NV_VIEWPORT_ARRAY_2_EXTENSION_NAME
The extension name.- See Also:
-
VK_NV_VIEWPORT_ARRAY2_SPEC_VERSION
public static final int VK_NV_VIEWPORT_ARRAY2_SPEC_VERSIONThe extension specification version.- See Also:
-
VK_NV_VIEWPORT_ARRAY2_EXTENSION_NAME
The extension name.- See Also:
-