1 /* $NetBSD: qxl_draw.c,v 1.3 2021/12/18 23:45:42 riastradh Exp $ */
2
3 /*
4 * Copyright 2011 Red Hat, Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * on the rights to use, copy, modify, merge, publish, distribute, sub
10 * license, and/or sell copies of the Software, and to permit persons to whom
11 * the Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
15 * Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
21 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25 #include <sys/cdefs.h>
26 __KERNEL_RCSID(0, "$NetBSD: qxl_draw.c,v 1.3 2021/12/18 23:45:42 riastradh Exp $");
27
28 #include <drm/drm_fourcc.h>
29
30 #include "qxl_drv.h"
31 #include "qxl_object.h"
32
alloc_clips(struct qxl_device * qdev,struct qxl_release * release,unsigned int num_clips,struct qxl_bo ** clips_bo)33 static int alloc_clips(struct qxl_device *qdev,
34 struct qxl_release *release,
35 unsigned int num_clips,
36 struct qxl_bo **clips_bo)
37 {
38 int size = sizeof(struct qxl_clip_rects) + sizeof(struct qxl_rect) * num_clips;
39
40 return qxl_alloc_bo_reserved(qdev, release, size, clips_bo);
41 }
42
43 /* returns a pointer to the already allocated qxl_rect array inside
44 * the qxl_clip_rects. This is *not* the same as the memory allocated
45 * on the device, it is offset to qxl_clip_rects.chunk.data */
drawable_set_clipping(struct qxl_device * qdev,unsigned int num_clips,struct qxl_bo * clips_bo)46 static struct qxl_rect *drawable_set_clipping(struct qxl_device *qdev,
47 unsigned int num_clips,
48 struct qxl_bo *clips_bo)
49 {
50 struct qxl_clip_rects *dev_clips;
51 int ret;
52
53 ret = qxl_bo_kmap(clips_bo, (void **)&dev_clips);
54 if (ret) {
55 return NULL;
56 }
57 dev_clips->num_rects = num_clips;
58 dev_clips->chunk.next_chunk = 0;
59 dev_clips->chunk.prev_chunk = 0;
60 dev_clips->chunk.data_size = sizeof(struct qxl_rect) * num_clips;
61 return (struct qxl_rect *)dev_clips->chunk.data;
62 }
63
64 static int
alloc_drawable(struct qxl_device * qdev,struct qxl_release ** release)65 alloc_drawable(struct qxl_device *qdev, struct qxl_release **release)
66 {
67 return qxl_alloc_release_reserved(qdev, sizeof(struct qxl_drawable),
68 QXL_RELEASE_DRAWABLE, release, NULL);
69 }
70
71 static void
free_drawable(struct qxl_device * qdev,struct qxl_release * release)72 free_drawable(struct qxl_device *qdev, struct qxl_release *release)
73 {
74 qxl_release_free(qdev, release);
75 }
76
77 /* release needs to be reserved at this point */
78 static int
make_drawable(struct qxl_device * qdev,int surface,uint8_t type,const struct qxl_rect * rect,struct qxl_release * release)79 make_drawable(struct qxl_device *qdev, int surface, uint8_t type,
80 const struct qxl_rect *rect,
81 struct qxl_release *release)
82 {
83 struct qxl_drawable *drawable;
84 int i;
85
86 drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
87 if (!drawable)
88 return -ENOMEM;
89
90 drawable->type = type;
91
92 drawable->surface_id = surface; /* Only primary for now */
93 drawable->effect = QXL_EFFECT_OPAQUE;
94 drawable->self_bitmap = 0;
95 drawable->self_bitmap_area.top = 0;
96 drawable->self_bitmap_area.left = 0;
97 drawable->self_bitmap_area.bottom = 0;
98 drawable->self_bitmap_area.right = 0;
99 /* FIXME: add clipping */
100 drawable->clip.type = SPICE_CLIP_TYPE_NONE;
101
102 /*
103 * surfaces_dest[i] should apparently be filled out with the
104 * surfaces that we depend on, and surface_rects should be
105 * filled with the rectangles of those surfaces that we
106 * are going to use.
107 */
108 for (i = 0; i < 3; ++i)
109 drawable->surfaces_dest[i] = -1;
110
111 if (rect)
112 drawable->bbox = *rect;
113
114 drawable->mm_time = qdev->rom->mm_clock;
115 qxl_release_unmap(qdev, release, &drawable->release_info);
116 return 0;
117 }
118
119 /* push a draw command using the given clipping rectangles as
120 * the sources from the shadow framebuffer.
121 *
122 * Right now implementing with a single draw and a clip list. Clip
123 * lists are known to be a problem performance wise, this can be solved
124 * by treating them differently in the server.
125 */
qxl_draw_dirty_fb(struct qxl_device * qdev,struct drm_framebuffer * fb,struct qxl_bo * bo,unsigned int flags,unsigned int color,struct drm_clip_rect * clips,unsigned int num_clips,int inc,uint32_t dumb_shadow_offset)126 void qxl_draw_dirty_fb(struct qxl_device *qdev,
127 struct drm_framebuffer *fb,
128 struct qxl_bo *bo,
129 unsigned int flags, unsigned int color,
130 struct drm_clip_rect *clips,
131 unsigned int num_clips, int inc,
132 uint32_t dumb_shadow_offset)
133 {
134 /*
135 * TODO: if flags & DRM_MODE_FB_DIRTY_ANNOTATE_FILL then we should
136 * send a fill command instead, much cheaper.
137 *
138 * See include/drm/drm_mode.h
139 */
140 struct drm_clip_rect *clips_ptr;
141 int i;
142 int left, right, top, bottom;
143 int width, height;
144 struct qxl_drawable *drawable;
145 struct qxl_rect drawable_rect;
146 struct qxl_rect *rects;
147 int stride = fb->pitches[0];
148 /* depth is not actually interesting, we don't mask with it */
149 int depth = fb->format->cpp[0] * 8;
150 uint8_t *surface_base;
151 struct qxl_release *release;
152 struct qxl_bo *clips_bo;
153 struct qxl_drm_image *dimage;
154 int ret;
155
156 ret = alloc_drawable(qdev, &release);
157 if (ret)
158 return;
159
160 clips->x1 += dumb_shadow_offset;
161 clips->x2 += dumb_shadow_offset;
162
163 left = clips->x1;
164 right = clips->x2;
165 top = clips->y1;
166 bottom = clips->y2;
167
168 /* skip the first clip rect */
169 for (i = 1, clips_ptr = clips + inc;
170 i < num_clips; i++, clips_ptr += inc) {
171 left = min_t(int, left, (int)clips_ptr->x1);
172 right = max_t(int, right, (int)clips_ptr->x2);
173 top = min_t(int, top, (int)clips_ptr->y1);
174 bottom = max_t(int, bottom, (int)clips_ptr->y2);
175 }
176
177 width = right - left;
178 height = bottom - top;
179
180 ret = alloc_clips(qdev, release, num_clips, &clips_bo);
181 if (ret)
182 goto out_free_drawable;
183
184 ret = qxl_image_alloc_objects(qdev, release,
185 &dimage,
186 height, stride);
187 if (ret)
188 goto out_free_clips;
189
190 /* do a reservation run over all the objects we just allocated */
191 ret = qxl_release_reserve_list(release, true);
192 if (ret)
193 goto out_free_image;
194
195 drawable_rect.left = left;
196 drawable_rect.right = right;
197 drawable_rect.top = top;
198 drawable_rect.bottom = bottom;
199
200 ret = make_drawable(qdev, 0, QXL_DRAW_COPY, &drawable_rect,
201 release);
202 if (ret)
203 goto out_release_backoff;
204
205 ret = qxl_bo_kmap(bo, (void **)&surface_base);
206 if (ret)
207 goto out_release_backoff;
208
209 ret = qxl_image_init(qdev, release, dimage, surface_base,
210 left - dumb_shadow_offset,
211 top, width, height, depth, stride);
212 qxl_bo_kunmap(bo);
213 if (ret)
214 goto out_release_backoff;
215
216 rects = drawable_set_clipping(qdev, num_clips, clips_bo);
217 if (!rects)
218 goto out_release_backoff;
219
220 drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
221
222 drawable->clip.type = SPICE_CLIP_TYPE_RECTS;
223 drawable->clip.data = qxl_bo_physical_address(qdev,
224 clips_bo, 0);
225
226 drawable->u.copy.src_area.top = 0;
227 drawable->u.copy.src_area.bottom = height;
228 drawable->u.copy.src_area.left = 0;
229 drawable->u.copy.src_area.right = width;
230
231 drawable->u.copy.rop_descriptor = SPICE_ROPD_OP_PUT;
232 drawable->u.copy.scale_mode = 0;
233 drawable->u.copy.mask.flags = 0;
234 drawable->u.copy.mask.pos.x = 0;
235 drawable->u.copy.mask.pos.y = 0;
236 drawable->u.copy.mask.bitmap = 0;
237
238 drawable->u.copy.src_bitmap = qxl_bo_physical_address(qdev, dimage->bo, 0);
239 qxl_release_unmap(qdev, release, &drawable->release_info);
240
241 clips_ptr = clips;
242 for (i = 0; i < num_clips; i++, clips_ptr += inc) {
243 rects[i].left = clips_ptr->x1;
244 rects[i].right = clips_ptr->x2;
245 rects[i].top = clips_ptr->y1;
246 rects[i].bottom = clips_ptr->y2;
247 }
248 qxl_bo_kunmap(clips_bo);
249
250 qxl_push_command_ring_release(qdev, release, QXL_CMD_DRAW, false);
251 qxl_release_fence_buffer_objects(release);
252
253 out_release_backoff:
254 if (ret)
255 qxl_release_backoff_reserve_list(release);
256 out_free_image:
257 qxl_image_free_objects(qdev, dimage);
258 out_free_clips:
259 qxl_bo_unref(&clips_bo);
260 out_free_drawable:
261 /* only free drawable on error */
262 if (ret)
263 free_drawable(qdev, release);
264
265 }
266