| jbauman@chromium.org | ddf83a2 | 2011-05-12 23:04:07 +0000 | [diff] [blame] | 1 | Name |
| 2 | |
| 3 | ANGLE_d3d_share_handle_client_buffer |
| 4 | |
| 5 | Name Strings |
| 6 | |
| 7 | EGL_ANGLE_d3d_share_handle_client_buffer |
| 8 | |
| 9 | Contributors |
| 10 | |
| 11 | John Bauman |
| 12 | Alastair Patrick |
| 13 | Daniel Koch |
| 14 | |
| 15 | Contacts |
| 16 | |
| 17 | John Bauman, Google Inc. (jbauman 'at' chromium.org) |
| 18 | |
| 19 | Status |
| 20 | |
| 21 | Complete |
| 22 | Implemented (ANGLE r650) |
| 23 | |
| 24 | Version |
| 25 | |
| 26 | Version 3, May 12, 2011 |
| 27 | |
| 28 | Number |
| 29 | |
| 30 | EGL Extension #?? |
| 31 | |
| 32 | Dependencies |
| 33 | |
| 34 | Requires the EGL_ANGLE_surface_d3d_texture_2d_share_handle extension. |
| 35 | |
| 36 | This extension is written against the wording of the EGL 1.4 |
| 37 | Specification. |
| 38 | |
| 39 | Overview |
| 40 | |
| 41 | This extension allows creating EGL surfaces from handles to textures |
| 42 | shared from the Direct3D API or from |
| 43 | EGL_ANGLE_surface_texture_2d_share_handle. |
| 44 | |
| 45 | New Types |
| 46 | |
| 47 | None |
| 48 | |
| 49 | New Procedures and Functions |
| 50 | |
| 51 | None |
| 52 | |
| 53 | New Tokens |
| 54 | |
| 55 | Accepted in the <buftype> parameter of eglCreatePbufferFromClientBuffer: |
| 56 | |
| 57 | EGL_D3D_TEXTURE_2D_SHARE_HANDLE_ANGLE 0x3200 |
| 58 | |
| 59 | Additions to Chapter 3 of the EGL 1.4 Specification (EGL Functions and Errors) |
| 60 | |
| 61 | Replace the last sentence of paragraph 1 of Section 3.5.3 with the |
| 62 | following text. |
| 63 | "Currently, the only client API resources which may be bound in this |
| 64 | fashion are OpenVG VGImage objects and Direct3D share handles." |
| 65 | |
| 66 | Replace the last sentence of paragraph 2 ("To bind a client API...") of |
| 67 | Section 3.5.3 with the following text. |
| 68 | "When <buftype> is EGL_OPENVG_IMAGE, the width and height of the pbuffer |
| 69 | are determined by the width and height of <buffer>. When <buftype> is |
| 70 | EGL_D3D_TEXTURE_2D_SHARE_HANDLE_ANGLE, the width and height are specified |
| 71 | using EGL_WIDTH and EGL_HEIGHT, or else they default to zero. The width |
| 72 | and height must match the dimensions of the texture which the share handle |
| 73 | was created from or else an EGL_BAD_ALLOC error is generated." |
| 74 | |
| 75 | Replace the third paragraph of Section 3.5.3 with the following text. |
| 76 | "<buftype> specifies the type of buffer to be bound. The only allowed values |
| 77 | of <buftype> are EGL_OPENVG_IMAGE and |
| 78 | EGL_D3D_TEXTURE_2D_SHARE_HANDLE_ANGLE". |
| 79 | |
| 80 | Append the following text to the fourth paragraph of Section 3.5.3. |
| 81 | "When <buftype> is EGL_D3D_TEXTURE_2D_SHARE_HANDLE_ANGLE, <buffer> must be |
| 82 | a valid D3D share handle, cast into the type EGLClientBuffer. The handle |
| 83 | may be obtained from the Direct3D9Ex CreateTexture function, from DXGI's |
| 84 | GetSharedHandle method on an ID3D10Texture2D, or from the |
| 85 | EGL_ANGLE_surface_d3d_texture_2d_share_handle extension." |
| 86 | |
| 87 | Issues |
| 88 | |
| 89 | Revision History |
| 90 | |
| 91 | Version 3, 2011/05/12 |
| 92 | - publish |
| 93 | |
| 94 | Version 2, 2011/05/03 |
| 95 | - specify EGL_D3D_TEXTURE_2D_SHARE_HANDLE |
| 96 | - specify error if dimensions don't match |
| 97 | |
| 98 | Version 1, 2011/04/12 - first draft. |