2011-04-06 22:45:47 +04:00
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Name
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ANGLE_surface_d3d_texture_2d_share_handle
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Name Strings
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EGL_ANGLE_surface_d3d_texture_2d_share_handle
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Contributors
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Vladimir Vukicevic
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Daniel Koch
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Contacts
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Vladimir Vukicevic (vladimir 'at' pobox.com)
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Status
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Complete
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Implemented (ANGLE r558)
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Version
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Version 2, December 21, 2010
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Number
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2012-01-17 18:28:13 +04:00
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EGL Extension #29
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2011-04-06 22:45:47 +04:00
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Dependencies
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Requires the EGL_ANGLE_query_surface_pointer extension.
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This extension is written against the wording of the EGL 1.4
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Specification.
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Overview
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Some EGL implementations generate EGLSurface handles that are
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backed by Direct3D 2D textures. For such surfaces, a D3D share
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handle can be generated, allowing access to the same surface
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from the Direct3D API.
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New Types
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None
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New Procedures and Functions
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None
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New Tokens
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Accepted in the <attribute> parameter of eglQuerySurfacePointerANGLE:
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EGL_D3D_TEXTURE_2D_SHARE_HANDLE_ANGLE 0x3200
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Additions to Chapter 3 of the EGL 1.4 Specification (EGL Functions and Errors)
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Add to table 3.5, "Queryable surface attributes and types":
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Attribute Type Description
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--------- ---- -----------
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EGL_D3D_TEXTURE_2D_SHARE_HANDLE_ANGLE pointer Direct3D share handle
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Add before the last paragraph in section 3.5, "Surface attributes":
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"Querying EGL_D3D_TEXTURE_2D_SHARE_HANDLE_ANGLE returns a Direct3D
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share handle, or NULL if a share handle for the surface is not
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available. The share handle must be queried using
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eglQuerySurfaceAttribPointerANGLE. Before using a Direct3D surface
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created with this share handle, ensure that all rendering
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to the EGLSurface with EGL client APIs has completed.
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The Direct3D share handle may be passed as the pSharedHandle
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parameter of the Direct3D9Ex CreateTexture function, or via the
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Direct3D10 OpenSharedResource function. If used with Direct3D 9,
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the level argument to CreateTexture must be 1, and the dimensions
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must match the dimensions of the EGL surface. If used with
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Direct3D 10, OpenSharedResource should be called with the
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ID3D10Texture2D uuid to obtain an ID3D10Texture2D object.
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Issues
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Revision History
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Version 3, 2011/02/11 - publish
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Version 2, 2010/12/21
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- renamed token to EGL_D3D_TEXTURE_2D_SHARE_HANDLE_ANGLE (adding "2D")
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- renamed extension to ANGLE_surface_d3d_texture_2d_share_handle
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- added language about supported usage of the shared handle from D3D
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Version 1, 2010/12/07 - first draft.
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