1 /************************************************************************** 2 * 3 * Copyright 2010 Luca Barbieri 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sublicense, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial 15 * portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 * 25 **************************************************************************/ 26 27 /* Header for the Gallium extensions to DXGI */ 28 29 import "galliumcom.idl"; 30 import "../d3dapi/dxgi.idl"; 31 32 /* These calls set the display system that will be associated 33 * to new DXGI factories created with CreateDXGIFactory and 34 * CreateDXGIFactory1 by the current thread. 35 * 36 * Existing factories and DXGI objects created from them are 37 * not affected. 38 * 39 * Gallium DXGI has both per-thread and per-process settings. 40 * If the per-thread display system has been set (i.e. a function 41 * of these was called, and the last one called was not UseNothing), 42 * it will be used. 43 * Otherwise, the per-process display system will be used if set, or 44 * and other the factory creation call may either fail, or use an 45 * user-specified default.. 46 * 47 * The per-process setting can be altered by calling 48 * GalliumDXGIMakeDefault, which will set the per-process setting 49 * according to the current per-thread setting. 50 * 51 * GalliumDXGIUseNothing() is the initial state, which means that 52 * the per-process default should be used, and if that is "use nothing" 53 * too, the call will either fail or use a user-specified default. 54 * 55 * NOTE that setting the per-process default is NOT atomic and must 56 * not be done concurrently with other calls to GalliumDXGIMakeDefault, 57 * CreateDXGIFactory or CreateDXGIFactory1. 58 * 59 * The PFNHWNDRESOLVER function is passed HWNDs coming from 60 * the API user and must return window-system-specific values: 61 * - X11: Window* 62 * - GDI: HWND 63 */ 64 65 [object, local, uuid("c22d2f85-f7dd-40b0-a50b-5d308f973c5e")] 66 interface IGalliumDXGIBackend : IUnknown 67 { 68 /* *present_cookie is set to a cookie that is passed to EndPresent 69 * 70 * *window and *rect are the window and subrectangle 71 * to present in. 72 * 73 * For X11, *window is a Window. 74 * For other systems, it will be the equivalent way to reference a window. 75 * 76 * The rectangle is clipped against the window size, so you can 77 * specify (0, 0, INT_MAX, INT_MAX) to use the whole window. 78 * 79 * rgndata is set to either NULL, or the region, in coordinates relative 80 * to the subrectangle, to clip presentation to. 81 * *rgndata is valid until EndPresent is called, at which point EndPresent 82 * may free the data. 83 * 84 * However, the rect field should still be set as normal if possible (especially 85 * the dimension).. 86 * 87 * If preserve_aspect_ratio is set, *rgndata will be ignored. This 88 * limitation may be lifted in future versions. 89 * 90 * If the window is fully obscured, return DXGI_STATUS_OCCLUDED. 91 * Everything else is ignored in that case. 92 * 93 * EndPresent is only called when S_OK is returned. 94 */ 95 HRESULT BeginPresent( 96 [in] HWND hwnd, 97 [out] void** present_cookie, 98 [out] void** window, 99 [out] RECT* rect, 100 [out] struct _RGNDATA** rgndata, 101 [out] BOOL* preserve_aspect_ratio 102 ); 103 104 void EndPresent( 105 [in] HWND hwnd, 106 [out] void* present_cookie 107 ); 108 109 /* If the window is fully obscured, return DXGI_STATUS_OCCLUDED, else S_OK */ 110 HRESULT TestPresent( 111 [in] HWND hwnd 112 ); 113 114 /* Get size of rectangle that would be returned by BeginPresent */ 115 HRESULT GetPresentSize( 116 [in] HWND hwnd, 117 [out] unsigned* width, 118 [out] unsigned* height 119 ); 120 } 121 122 void GalliumDXGIUseNothing(); 123 124 /* only a subset of these may be available, depending on platform and compilation options */ 125 void GalliumDXGIUseX11Display(struct _XDisplay* dpy, IGalliumDXGIBackend* backend); 126 127 /* these don't really work for now 128 void GalliumDXGIUseDRMCard(int fd); 129 void GalliumDXGIUseFBDev(int fd); 130 void GalliumDXGIUseHDC(HDC hdc, IGalliumDXGIGDIBackend* backend); 131 */ 132 133 void GalliumDXGIMakeDefault(); 134 135
