1 /* 2 * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 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 NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 20 * DEALINGS IN THE SOFTWARE. 21 */ 22 23 #include <stddef.h> /* offsetof */ 24 #include <stdio.h> /* printf */ 25 26 #include "wayland-egl-backend.h" /* Current struct wl_egl_window implementation */ 27 28 /* 29 * Following are previous implementations of wl_egl_window. 30 * 31 * DO NOT EVER CHANGE! 32 */ 33 34 /* From: 214fc6e850 - Benjamin Franzke : egl: Implement libwayland-egl */ 35 struct wl_egl_window_v0 { 36 struct wl_surface *surface; 37 38 int width; 39 int height; 40 int dx; 41 int dy; 42 43 int attached_width; 44 int attached_height; 45 }; 46 47 /* From: ca3ed3e024 - Ander Conselvan de Oliveira : egl/wayland: Don't invalidate drawable on swap buffers */ 48 struct wl_egl_window_v1 { 49 struct wl_surface *surface; 50 51 int width; 52 int height; 53 int dx; 54 int dy; 55 56 int attached_width; 57 int attached_height; 58 59 void *private; 60 void (*resize_callback)(struct wl_egl_window *, void *); 61 }; 62 63 /* From: 690ead4a13 - Stencel, Joanna : egl/wayland-egl: Fix for segfault in dri2_wl_destroy_surface. */ 64 #define WL_EGL_WINDOW_VERSION_v2 2 65 struct wl_egl_window_v2 { 66 struct wl_surface *surface; 67 68 int width; 69 int height; 70 int dx; 71 int dy; 72 73 int attached_width; 74 int attached_height; 75 76 void *private; 77 void (*resize_callback)(struct wl_egl_window *, void *); 78 void (*destroy_window_callback)(void *); 79 }; 80 81 /* From: 2d5d61bc49 - Miguel A. Vico : wayland-egl: Make wl_egl_window a versioned struct */ 82 #define WL_EGL_WINDOW_VERSION_v3 3 83 struct wl_egl_window_v3 { 84 const intptr_t version; 85 86 int width; 87 int height; 88 int dx; 89 int dy; 90 91 int attached_width; 92 int attached_height; 93 94 void *private; 95 void (*resize_callback)(struct wl_egl_window *, void *); 96 void (*destroy_window_callback)(void *); 97 98 struct wl_surface *surface; 99 }; 100 101 102 /* This program checks we keep a backwards-compatible struct wl_egl_window 103 * definition whenever it is modified in wayland-egl-backend.h. 104 * 105 * The previous definition should be added above as a new struct 106 * wl_egl_window_vN, and the appropriate checks should be added below 107 */ 108 109 #define MEMBER_SIZE(type, member) sizeof(((type *)0)->member) 110 111 #define CHECK_RENAMED_MEMBER(a_ver, b_ver, a_member, b_member) \ 112 do { \ 113 if (offsetof(struct wl_egl_window ## a_ver, a_member) != \ 114 offsetof(struct wl_egl_window ## b_ver, b_member)) { \ 115 printf("Backards incompatible change detected!\n " \ 116 "offsetof(struct wl_egl_window" #a_ver "::" #a_member ") != " \ 117 "offsetof(struct wl_egl_window" #b_ver "::" #b_member ")\n"); \ 118 return 1; \ 119 } \ 120 \ 121 if (MEMBER_SIZE(struct wl_egl_window ## a_ver, a_member) != \ 122 MEMBER_SIZE(struct wl_egl_window ## b_ver, b_member)) { \ 123 printf("Backards incompatible change detected!\n " \ 124 "MEMBER_SIZE(struct wl_egl_window" #a_ver "::" #a_member ") != " \ 125 "MEMBER_SIZE(struct wl_egl_window" #b_ver "::" #b_member ")\n"); \ 126 return 1; \ 127 } \ 128 } while (0) 129 130 #define CHECK_MEMBER(a_ver, b_ver, member) CHECK_RENAMED_MEMBER(a_ver, b_ver, member, member) 131 #define CHECK_MEMBER_CURRENT(a_ver, member) CHECK_MEMBER(a_ver,, member) 132 133 #define CHECK_SIZE(a_ver, b_ver) \ 134 do { \ 135 if (sizeof(struct wl_egl_window ## a_ver) > \ 136 sizeof(struct wl_egl_window ## b_ver)) { \ 137 printf("Backards incompatible change detected!\n " \ 138 "sizeof(struct wl_egl_window" #a_ver ") > " \ 139 "sizeof(struct wl_egl_window" #b_ver ")\n"); \ 140 return 1; \ 141 } \ 142 } while (0) 143 144 #define CHECK_SIZE_CURRENT(a_ver) \ 145 do { \ 146 if (sizeof(struct wl_egl_window ## a_ver) != \ 147 sizeof(struct wl_egl_window)) { \ 148 printf("Backards incompatible change detected!\n " \ 149 "sizeof(struct wl_egl_window" #a_ver ") != " \ 150 "sizeof(struct wl_egl_window)\n"); \ 151 return 1; \ 152 } \ 153 } while (0) 154 155 #define CHECK_VERSION(a_ver, b_ver) \ 156 do { \ 157 if ((WL_EGL_WINDOW_VERSION ## a_ver) >= \ 158 (WL_EGL_WINDOW_VERSION ## b_ver)) { \ 159 printf("Backards incompatible change detected!\n " \ 160 "WL_EGL_WINDOW_VERSION" #a_ver " >= " \ 161 "WL_EGL_WINDOW_VERSION" #b_ver "\n"); \ 162 return 1; \ 163 } \ 164 } while (0) 165 166 #define CHECK_VERSION_CURRENT(a_ver) \ 167 do { \ 168 if ((WL_EGL_WINDOW_VERSION ## a_ver) != \ 169 (WL_EGL_WINDOW_VERSION)) { \ 170 printf("Backards incompatible change detected!\n " \ 171 "WL_EGL_WINDOW_VERSION" #a_ver " != " \ 172 "WL_EGL_WINDOW_VERSION\n"); \ 173 return 1; \ 174 } \ 175 } while (0) 176 177 int main(int argc, char **argv) 178 { 179 /* Check wl_egl_window_v1 ABI against wl_egl_window_v0 */ 180 CHECK_MEMBER(_v0, _v1, surface); 181 CHECK_MEMBER(_v0, _v1, width); 182 CHECK_MEMBER(_v0, _v1, height); 183 CHECK_MEMBER(_v0, _v1, dx); 184 CHECK_MEMBER(_v0, _v1, dy); 185 CHECK_MEMBER(_v0, _v1, attached_width); 186 CHECK_MEMBER(_v0, _v1, attached_height); 187 188 CHECK_SIZE(_v0, _v1); 189 190 /* Check wl_egl_window_v2 ABI against wl_egl_window_v1 */ 191 CHECK_MEMBER(_v1, _v2, surface); 192 CHECK_MEMBER(_v1, _v2, width); 193 CHECK_MEMBER(_v1, _v2, height); 194 CHECK_MEMBER(_v1, _v2, dx); 195 CHECK_MEMBER(_v1, _v2, dy); 196 CHECK_MEMBER(_v1, _v2, attached_width); 197 CHECK_MEMBER(_v1, _v2, attached_height); 198 CHECK_MEMBER(_v1, _v2, private); 199 CHECK_MEMBER(_v1, _v2, resize_callback); 200 201 CHECK_SIZE(_v1, _v2); 202 203 /* Check wl_egl_window_v3 ABI against wl_egl_window_v2 */ 204 CHECK_RENAMED_MEMBER(_v2, _v3, surface, version); 205 CHECK_MEMBER (_v2, _v3, width); 206 CHECK_MEMBER (_v2, _v3, height); 207 CHECK_MEMBER (_v2, _v3, dx); 208 CHECK_MEMBER (_v2, _v3, dy); 209 CHECK_MEMBER (_v2, _v3, attached_width); 210 CHECK_MEMBER (_v2, _v3, attached_height); 211 CHECK_MEMBER (_v2, _v3, private); 212 CHECK_MEMBER (_v2, _v3, resize_callback); 213 CHECK_MEMBER (_v2, _v3, destroy_window_callback); 214 215 CHECK_SIZE (_v2, _v3); 216 CHECK_VERSION(_v2, _v3); 217 218 /* Check current wl_egl_window ABI against wl_egl_window_v3 */ 219 CHECK_MEMBER_CURRENT(_v3, version); 220 CHECK_MEMBER_CURRENT(_v3, width); 221 CHECK_MEMBER_CURRENT(_v3, height); 222 CHECK_MEMBER_CURRENT(_v3, dx); 223 CHECK_MEMBER_CURRENT(_v3, dy); 224 CHECK_MEMBER_CURRENT(_v3, attached_width); 225 CHECK_MEMBER_CURRENT(_v3, attached_height); 226 CHECK_MEMBER_CURRENT(_v3, private); 227 CHECK_MEMBER_CURRENT(_v3, resize_callback); 228 CHECK_MEMBER_CURRENT(_v3, destroy_window_callback); 229 CHECK_MEMBER_CURRENT(_v3, surface); 230 231 CHECK_SIZE_CURRENT (_v3); 232 CHECK_VERSION_CURRENT(_v3); 233 234 return 0; 235 } 236
