Deprecation State
-
Promoted to Vulkan 1.2
Contact
-
Daniel Koch dgkoch
Other Extension Metadata
- Last Modified Date
-
2017-08-08
- Interactions and External Dependencies
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-
This extension provides API support for
GL_ARB_shader_viewport_layer_array,GL_AMD_vertex_shader_layer,GL_AMD_vertex_shader_viewport_index, andGL_NV_viewport_array2 -
This extension requires the
multiViewportfeature. -
This extension interacts with the
tessellationShaderfeature.
-
- Contributors
-
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Piers Daniell, NVIDIA
-
Jeff Bolz, NVIDIA
-
Jan-Harald Fredriksen, ARM
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Daniel Rakos, AMD
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Slawomir Grajeswki, Intel
-
Description
This extension adds support for the ShaderViewportIndexLayerEXT
capability from the SPV_EXT_shader_viewport_index_layer extension in
Vulkan.
This extension allows variables decorated with the Layer and
ViewportIndex built-ins to be exported from vertex or tessellation
shaders, using the ShaderViewportIndexLayerEXT capability.
When using GLSL source-based shading languages, the gl_ViewportIndex
and gl_Layer built-in variables map to the SPIR-V ViewportIndex
and Layer built-in decorations, respectively.
Behaviour of these variables is extended as described in the
GL_ARB_shader_viewport_layer_array (or the precursor
GL_AMD_vertex_shader_layer, GL_AMD_vertex_shader_viewport_index, and
GL_NV_viewport_array2 extensions).
|
Note
The |
Promotion to Vulkan 1.2
All functionality in this extension is included in core Vulkan 1.2.
The single ShaderViewportIndexLayerEXT capability from the
SPV_EXT_shader_viewport_index_layer extension is replaced by the
ShaderViewportIndex and ShaderLayer capabilities from SPIR-V 1.5 which are enabled by the
shaderOutputViewportIndex and
shaderOutputLayer features,
respectively.
Additionally, if Vulkan 1.2 is supported but this extension is not, these
capabilities are optional.
Enabling both features is equivalent to enabling the
VK_EXT_shader_viewport_index_layer extension.
New Enum Constants
-
VK_EXT_SHADER_VIEWPORT_INDEX_LAYER_EXTENSION_NAME -
VK_EXT_SHADER_VIEWPORT_INDEX_LAYER_SPEC_VERSION
New or Modified Built-In Variables
-
(modified)
Layer -
(modified)
ViewportIndex
Document Notes
For more information, see the Vulkan Specification
This page is a generated document. Fixes and changes should be made to the generator scripts, not directly.