summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/qxl/qxl_draw.c
blob: 5bebf1ea1c5d0c5b59b1cb3579dc62f93dba0cef (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
/*
 * Copyright 2011 Red Hat, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * on the rights to use, copy, modify, merge, publish, distribute, sub
 * license, and/or sell copies of the Software, and to permit persons to whom
 * the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include <drm/drm_fourcc.h>

#include "qxl_drv.h"
#include "qxl_object.h"

static int alloc_clips(struct qxl_device *qdev,
		       struct qxl_release *release,
		       unsigned int num_clips,
		       struct qxl_bo **clips_bo)
{
	int size = sizeof(struct qxl_clip_rects) + sizeof(struct qxl_rect) * num_clips;

	return qxl_alloc_bo_reserved(qdev, release, size, clips_bo);
}

/* returns a pointer to the already allocated qxl_rect array inside
 * the qxl_clip_rects. This is *not* the same as the memory allocated
 * on the device, it is offset to qxl_clip_rects.chunk.data */
static struct qxl_rect *drawable_set_clipping(struct qxl_device *qdev,
					      unsigned int num_clips,
					      struct qxl_bo *clips_bo)
{
	struct qxl_clip_rects *dev_clips;
	int ret;

	ret = qxl_bo_kmap(clips_bo, (void **)&dev_clips);
	if (ret) {
		return NULL;
	}
	dev_clips->num_rects = num_clips;
	dev_clips->chunk.next_chunk = 0;
	dev_clips->chunk.prev_chunk = 0;
	dev_clips->chunk.data_size = sizeof(struct qxl_rect) * num_clips;
	return (struct qxl_rect *)dev_clips->chunk.data;
}

static int
alloc_drawable(struct qxl_device *qdev, struct qxl_release **release)
{
	return qxl_alloc_release_reserved(qdev, sizeof(struct qxl_drawable),
					  QXL_RELEASE_DRAWABLE, release, NULL);
}

static void
free_drawable(struct qxl_device *qdev, struct qxl_release *release)
{
	qxl_release_free(qdev, release);
}

/* release needs to be reserved at this point */
static int
make_drawable(struct qxl_device *qdev, int surface, uint8_t type,
	      const struct qxl_rect *rect,
	      struct qxl_release *release)
{
	struct qxl_drawable *drawable;
	int i;

	drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
	if (!drawable)
		return -ENOMEM;

	drawable->type = type;

	drawable->surface_id = surface;		/* Only primary for now */
	drawable->effect = QXL_EFFECT_OPAQUE;
	drawable->self_bitmap = 0;
	drawable->self_bitmap_area.top = 0;
	drawable->self_bitmap_area.left = 0;
	drawable->self_bitmap_area.bottom = 0;
	drawable->self_bitmap_area.right = 0;
	/* FIXME: add clipping */
	drawable->clip.type = SPICE_CLIP_TYPE_NONE;

	/*
	 * surfaces_dest[i] should apparently be filled out with the
	 * surfaces that we depend on, and surface_rects should be
	 * filled with the rectangles of those surfaces that we
	 * are going to use.
	 */
	for (i = 0; i < 3; ++i)
		drawable->surfaces_dest[i] = -1;

	if (rect)
		drawable->bbox = *rect;

	drawable->mm_time = qdev->rom->mm_clock;
	qxl_release_unmap(qdev, release, &drawable->release_info);
	return 0;
}

/* push a draw command using the given clipping rectangles as
 * the sources from the shadow framebuffer.
 *
 * Right now implementing with a single draw and a clip list. Clip
 * lists are known to be a problem performance wise, this can be solved
 * by treating them differently in the server.
 */
void 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)
{
	/*
	 * TODO: if flags & DRM_MODE_FB_DIRTY_ANNOTATE_FILL then we should
	 * send a fill command instead, much cheaper.
	 *
	 * See include/drm/drm_mode.h
	 */
	struct drm_clip_rect *clips_ptr;
	int i;
	int left, right, top, bottom;
	int width, height;
	struct qxl_drawable *drawable;
	struct qxl_rect drawable_rect;
	struct qxl_rect *rects;
	int stride = fb->pitches[0];
	/* depth is not actually interesting, we don't mask with it */
	int depth = fb->format->cpp[0] * 8;
	uint8_t *surface_base;
	struct qxl_release *release;
	struct qxl_bo *clips_bo;
	struct qxl_drm_image *dimage;
	int ret;

	ret = alloc_drawable(qdev, &release);
	if (ret)
		return;

	clips->x1 += dumb_shadow_offset;
	clips->x2 += dumb_shadow_offset;

	left = clips->x1;
	right = clips->x2;
	top = clips->y1;
	bottom = clips->y2;

	/* skip the first clip rect */
	for (i = 1, clips_ptr = clips + inc;
	     i < num_clips; i++, clips_ptr += inc) {
		left = min_t(int, left, (int)clips_ptr->x1);
		right = max_t(int, right, (int)clips_ptr->x2);
		top = min_t(int, top, (int)clips_ptr->y1);
		bottom = max_t(int, bottom, (int)clips_ptr->y2);
	}

	width = right - left;
	height = bottom - top;

	ret = alloc_clips(qdev, release, num_clips, &clips_bo);
	if (ret)
		goto out_free_drawable;

	ret = qxl_image_alloc_objects(qdev, release,
				      &dimage,
				      height, stride);
	if (ret)
		goto out_free_clips;

	/* do a reservation run over all the objects we just allocated */
	ret = qxl_release_reserve_list(release, true);
	if (ret)
		goto out_free_image;

	drawable_rect.left = left;
	drawable_rect.right = right;
	drawable_rect.top = top;
	drawable_rect.bottom = bottom;

	ret = make_drawable(qdev, 0, QXL_DRAW_COPY, &drawable_rect,
			    release);
	if (ret)
		goto out_release_backoff;

	ret = qxl_bo_kmap(bo, (void **)&surface_base);
	if (ret)
		goto out_release_backoff;

	ret = qxl_image_init(qdev, release, dimage, surface_base,
			     left - dumb_shadow_offset,
			     top, width, height, depth, stride);
	qxl_bo_kunmap(bo);
	if (ret)
		goto out_release_backoff;

	rects = drawable_set_clipping(qdev, num_clips, clips_bo);
	if (!rects)
		goto out_release_backoff;

	drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);

	drawable->clip.type = SPICE_CLIP_TYPE_RECTS;
	drawable->clip.data = qxl_bo_physical_address(qdev,
						      clips_bo, 0);

	drawable->u.copy.src_area.top = 0;
	drawable->u.copy.src_area.bottom = height;
	drawable->u.copy.src_area.left = 0;
	drawable->u.copy.src_area.right = width;

	drawable->u.copy.rop_descriptor = SPICE_ROPD_OP_PUT;
	drawable->u.copy.scale_mode = 0;
	drawable->u.copy.mask.flags = 0;
	drawable->u.copy.mask.pos.x = 0;
	drawable->u.copy.mask.pos.y = 0;
	drawable->u.copy.mask.bitmap = 0;

	drawable->u.copy.src_bitmap = qxl_bo_physical_address(qdev, dimage->bo, 0);
	qxl_release_unmap(qdev, release, &drawable->release_info);

	clips_ptr = clips;
	for (i = 0; i < num_clips; i++, clips_ptr += inc) {
		rects[i].left   = clips_ptr->x1;
		rects[i].right  = clips_ptr->x2;
		rects[i].top    = clips_ptr->y1;
		rects[i].bottom = clips_ptr->y2;
	}
	qxl_bo_kunmap(clips_bo);

	qxl_push_command_ring_release(qdev, release, QXL_CMD_DRAW, false);
	qxl_release_fence_buffer_objects(release);

out_release_backoff:
	if (ret)
		qxl_release_backoff_reserve_list(release);
out_free_image:
	qxl_image_free_objects(qdev, dimage);
out_free_clips:
	qxl_bo_unref(&clips_bo);
out_free_drawable:
	/* only free drawable on error */
	if (ret)
		free_drawable(qdev, release);

}