1/************************************************************************** 2 * 3 * Copyright 2010 VMware, Inc. 4 * All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 18 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 19 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 20 * USE OR OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * The above copyright notice and this permission notice (including the 23 * next paragraph) shall be included in all copies or substantial portions 24 * of the Software. 25 * 26 **************************************************************************/ 27 28/** 29 * @file 30 * Null software rasterizer winsys. 31 * 32 * There is no present support. Framebuffer data needs to be obtained via 33 * transfers. 34 * 35 * @author Jose Fonseca 36 */ 37 38#include <stdio.h> 39 40#include "pipe/p_format.h" 41#include "util/u_memory.h" 42#include "state_tracker/sw_winsys.h" 43#include "null_sw_winsys.h" 44 45 46static boolean 47null_sw_is_displaytarget_format_supported(struct sw_winsys *ws, 48 unsigned tex_usage, 49 enum pipe_format format ) 50{ 51 return FALSE; 52} 53 54 55static void * 56null_sw_displaytarget_map(struct sw_winsys *ws, 57 struct sw_displaytarget *dt, 58 unsigned flags ) 59{ 60 assert(0); 61 return NULL; 62} 63 64 65static void 66null_sw_displaytarget_unmap(struct sw_winsys *ws, 67 struct sw_displaytarget *dt ) 68{ 69 assert(0); 70} 71 72 73static void 74null_sw_displaytarget_destroy(struct sw_winsys *winsys, 75 struct sw_displaytarget *dt) 76{ 77 assert(0); 78} 79 80 81static struct sw_displaytarget * 82null_sw_displaytarget_create(struct sw_winsys *winsys, 83 unsigned tex_usage, 84 enum pipe_format format, 85 unsigned width, unsigned height, 86 unsigned alignment, 87 unsigned *stride) 88{ 89 fprintf(stderr, "null_sw_displaytarget_create() returning NULL\n"); 90 return NULL; 91} 92 93 94static struct sw_displaytarget * 95null_sw_displaytarget_from_handle(struct sw_winsys *winsys, 96 const struct pipe_resource *templet, 97 struct winsys_handle *whandle, 98 unsigned *stride) 99{ 100 return NULL; 101} 102 103 104static boolean 105null_sw_displaytarget_get_handle(struct sw_winsys *winsys, 106 struct sw_displaytarget *dt, 107 struct winsys_handle *whandle) 108{ 109 assert(0); 110 return FALSE; 111} 112 113 114static void 115null_sw_displaytarget_display(struct sw_winsys *winsys, 116 struct sw_displaytarget *dt, 117 void *context_private) 118{ 119 assert(0); 120} 121 122 123static void 124null_sw_destroy(struct sw_winsys *winsys) 125{ 126 FREE(winsys); 127} 128 129 130struct sw_winsys * 131null_sw_create(void) 132{ 133 static struct sw_winsys *winsys; 134 135 winsys = CALLOC_STRUCT(sw_winsys); 136 if (!winsys) 137 return NULL; 138 139 winsys->destroy = null_sw_destroy; 140 winsys->is_displaytarget_format_supported = null_sw_is_displaytarget_format_supported; 141 winsys->displaytarget_create = null_sw_displaytarget_create; 142 winsys->displaytarget_from_handle = null_sw_displaytarget_from_handle; 143 winsys->displaytarget_get_handle = null_sw_displaytarget_get_handle; 144 winsys->displaytarget_map = null_sw_displaytarget_map; 145 winsys->displaytarget_unmap = null_sw_displaytarget_unmap; 146 winsys->displaytarget_display = null_sw_displaytarget_display; 147 winsys->displaytarget_destroy = null_sw_displaytarget_destroy; 148 149 return winsys; 150} 151