1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Test cases for the drm_rect functions 4 */ 5 6#define pr_fmt(fmt) "drm_rect: " fmt 7 8#include <linux/limits.h> 9 10#include <drm/drm_rect.h> 11 12#include "test-drm_modeset_common.h" 13 14int igt_drm_rect_clip_scaled_div_by_zero(void *ignored) 15{ 16 struct drm_rect src, dst, clip; 17 bool visible; 18 19 /* 20 * Make sure we don't divide by zero when dst 21 * width/height is zero and dst and clip do not intersect. 22 */ 23 drm_rect_init(&src, 0, 0, 0, 0); 24 drm_rect_init(&dst, 0, 0, 0, 0); 25 drm_rect_init(&clip, 1, 1, 1, 1); 26 visible = drm_rect_clip_scaled(&src, &dst, &clip); 27 FAIL(visible, "Destination not be visible\n"); 28 FAIL(drm_rect_visible(&src), "Source should not be visible\n"); 29 30 drm_rect_init(&src, 0, 0, 0, 0); 31 drm_rect_init(&dst, 3, 3, 0, 0); 32 drm_rect_init(&clip, 1, 1, 1, 1); 33 visible = drm_rect_clip_scaled(&src, &dst, &clip); 34 FAIL(visible, "Destination not be visible\n"); 35 FAIL(drm_rect_visible(&src), "Source should not be visible\n"); 36 37 return 0; 38} 39 40int igt_drm_rect_clip_scaled_not_clipped(void *ignored) 41{ 42 struct drm_rect src, dst, clip; 43 bool visible; 44 45 /* 1:1 scaling */ 46 drm_rect_init(&src, 0, 0, 1 << 16, 1 << 16); 47 drm_rect_init(&dst, 0, 0, 1, 1); 48 drm_rect_init(&clip, 0, 0, 1, 1); 49 50 visible = drm_rect_clip_scaled(&src, &dst, &clip); 51 52 FAIL(src.x1 != 0 || src.x2 != 1 << 16 || 53 src.y1 != 0 || src.y2 != 1 << 16, 54 "Source badly clipped\n"); 55 FAIL(dst.x1 != 0 || dst.x2 != 1 || 56 dst.y1 != 0 || dst.y2 != 1, 57 "Destination badly clipped\n"); 58 FAIL(!visible, "Destination should be visible\n"); 59 FAIL(!drm_rect_visible(&src), "Source should be visible\n"); 60 61 /* 2:1 scaling */ 62 drm_rect_init(&src, 0, 0, 2 << 16, 2 << 16); 63 drm_rect_init(&dst, 0, 0, 1, 1); 64 drm_rect_init(&clip, 0, 0, 1, 1); 65 66 visible = drm_rect_clip_scaled(&src, &dst, &clip); 67 68 FAIL(src.x1 != 0 || src.x2 != 2 << 16 || 69 src.y1 != 0 || src.y2 != 2 << 16, 70 "Source badly clipped\n"); 71 FAIL(dst.x1 != 0 || dst.x2 != 1 || 72 dst.y1 != 0 || dst.y2 != 1, 73 "Destination badly clipped\n"); 74 FAIL(!visible, "Destination should be visible\n"); 75 FAIL(!drm_rect_visible(&src), "Source should be visible\n"); 76 77 /* 1:2 scaling */ 78 drm_rect_init(&src, 0, 0, 1 << 16, 1 << 16); 79 drm_rect_init(&dst, 0, 0, 2, 2); 80 drm_rect_init(&clip, 0, 0, 2, 2); 81 82 visible = drm_rect_clip_scaled(&src, &dst, &clip); 83 84 FAIL(src.x1 != 0 || src.x2 != 1 << 16 || 85 src.y1 != 0 || src.y2 != 1 << 16, 86 "Source badly clipped\n"); 87 FAIL(dst.x1 != 0 || dst.x2 != 2 || 88 dst.y1 != 0 || dst.y2 != 2, 89 "Destination badly clipped\n"); 90 FAIL(!visible, "Destination should be visible\n"); 91 FAIL(!drm_rect_visible(&src), "Source should be visible\n"); 92 93 return 0; 94} 95 96int igt_drm_rect_clip_scaled_clipped(void *ignored) 97{ 98 struct drm_rect src, dst, clip; 99 bool visible; 100 101 /* 1:1 scaling top/left clip */ 102 drm_rect_init(&src, 0, 0, 2 << 16, 2 << 16); 103 drm_rect_init(&dst, 0, 0, 2, 2); 104 drm_rect_init(&clip, 0, 0, 1, 1); 105 106 visible = drm_rect_clip_scaled(&src, &dst, &clip); 107 108 FAIL(src.x1 != 0 || src.x2 != 1 << 16 || 109 src.y1 != 0 || src.y2 != 1 << 16, 110 "Source badly clipped\n"); 111 FAIL(dst.x1 != 0 || dst.x2 != 1 || 112 dst.y1 != 0 || dst.y2 != 1, 113 "Destination badly clipped\n"); 114 FAIL(!visible, "Destination should be visible\n"); 115 FAIL(!drm_rect_visible(&src), "Source should be visible\n"); 116 117 /* 1:1 scaling bottom/right clip */ 118 drm_rect_init(&src, 0, 0, 2 << 16, 2 << 16); 119 drm_rect_init(&dst, 0, 0, 2, 2); 120 drm_rect_init(&clip, 1, 1, 1, 1); 121 122 visible = drm_rect_clip_scaled(&src, &dst, &clip); 123 124 FAIL(src.x1 != 1 << 16 || src.x2 != 2 << 16 || 125 src.y1 != 1 << 16 || src.y2 != 2 << 16, 126 "Source badly clipped\n"); 127 FAIL(dst.x1 != 1 || dst.x2 != 2 || 128 dst.y1 != 1 || dst.y2 != 2, 129 "Destination badly clipped\n"); 130 FAIL(!visible, "Destination should be visible\n"); 131 FAIL(!drm_rect_visible(&src), "Source should be visible\n"); 132 133 /* 2:1 scaling top/left clip */ 134 drm_rect_init(&src, 0, 0, 4 << 16, 4 << 16); 135 drm_rect_init(&dst, 0, 0, 2, 2); 136 drm_rect_init(&clip, 0, 0, 1, 1); 137 138 visible = drm_rect_clip_scaled(&src, &dst, &clip); 139 140 FAIL(src.x1 != 0 || src.x2 != 2 << 16 || 141 src.y1 != 0 || src.y2 != 2 << 16, 142 "Source badly clipped\n"); 143 FAIL(dst.x1 != 0 || dst.x2 != 1 || 144 dst.y1 != 0 || dst.y2 != 1, 145 "Destination badly clipped\n"); 146 FAIL(!visible, "Destination should be visible\n"); 147 FAIL(!drm_rect_visible(&src), "Source should be visible\n"); 148 149 /* 2:1 scaling bottom/right clip */ 150 drm_rect_init(&src, 0, 0, 4 << 16, 4 << 16); 151 drm_rect_init(&dst, 0, 0, 2, 2); 152 drm_rect_init(&clip, 1, 1, 1, 1); 153 154 visible = drm_rect_clip_scaled(&src, &dst, &clip); 155 156 FAIL(src.x1 != 2 << 16 || src.x2 != 4 << 16 || 157 src.y1 != 2 << 16 || src.y2 != 4 << 16, 158 "Source badly clipped\n"); 159 FAIL(dst.x1 != 1 || dst.x2 != 2 || 160 dst.y1 != 1 || dst.y2 != 2, 161 "Destination badly clipped\n"); 162 FAIL(!visible, "Destination should be visible\n"); 163 FAIL(!drm_rect_visible(&src), "Source should be visible\n"); 164 165 /* 1:2 scaling top/left clip */ 166 drm_rect_init(&src, 0, 0, 2 << 16, 2 << 16); 167 drm_rect_init(&dst, 0, 0, 4, 4); 168 drm_rect_init(&clip, 0, 0, 2, 2); 169 170 visible = drm_rect_clip_scaled(&src, &dst, &clip); 171 172 FAIL(src.x1 != 0 || src.x2 != 1 << 16 || 173 src.y1 != 0 || src.y2 != 1 << 16, 174 "Source badly clipped\n"); 175 FAIL(dst.x1 != 0 || dst.x2 != 2 || 176 dst.y1 != 0 || dst.y2 != 2, 177 "Destination badly clipped\n"); 178 FAIL(!visible, "Destination should be visible\n"); 179 FAIL(!drm_rect_visible(&src), "Source should be visible\n"); 180 181 /* 1:2 scaling bottom/right clip */ 182 drm_rect_init(&src, 0, 0, 2 << 16, 2 << 16); 183 drm_rect_init(&dst, 0, 0, 4, 4); 184 drm_rect_init(&clip, 2, 2, 2, 2); 185 186 visible = drm_rect_clip_scaled(&src, &dst, &clip); 187 188 FAIL(src.x1 != 1 << 16 || src.x2 != 2 << 16 || 189 src.y1 != 1 << 16 || src.y2 != 2 << 16, 190 "Source badly clipped\n"); 191 FAIL(dst.x1 != 2 || dst.x2 != 4 || 192 dst.y1 != 2 || dst.y2 != 4, 193 "Destination badly clipped\n"); 194 FAIL(!visible, "Destination should be visible\n"); 195 FAIL(!drm_rect_visible(&src), "Source should be visible\n"); 196 197 return 0; 198} 199 200int igt_drm_rect_clip_scaled_signed_vs_unsigned(void *ignored) 201{ 202 struct drm_rect src, dst, clip; 203 bool visible; 204 205 /* 206 * 'clip.x2 - dst.x1 >= dst width' could result a negative 207 * src rectangle width which is no longer expected by the 208 * code as it's using unsigned types. This could lead to 209 * the clipped source rectangle appering visible when it 210 * should have been fully clipped. Make sure both rectangles 211 * end up invisible. 212 */ 213 drm_rect_init(&src, 0, 0, INT_MAX, INT_MAX); 214 drm_rect_init(&dst, 0, 0, 2, 2); 215 drm_rect_init(&clip, 3, 3, 1, 1); 216 217 visible = drm_rect_clip_scaled(&src, &dst, &clip); 218 219 FAIL(visible, "Destination should not be visible\n"); 220 FAIL(drm_rect_visible(&src), "Source should not be visible\n"); 221 222 return 0; 223} 224