1 /*
2 * Copyright © 2009 Intel Corporation
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 (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 *
23 * Authors:
24 * Junyan He <junyan.he@linux.intel.com>
25 *
26 */
27
28 /** @file glamor_trapezoid.c
29 *
30 * Trapezoid acceleration implementation
31 */
32
33 #include "glamor_priv.h"
34
35 #include "mipict.h"
36 #include "fbpict.h"
37
38 /**
39 * Creates an appropriate picture for temp mask use.
40 */
41 static PicturePtr
glamor_create_mask_picture(ScreenPtr screen,PicturePtr dst,PictFormatPtr pict_format,CARD16 width,CARD16 height)42 glamor_create_mask_picture(ScreenPtr screen,
43 PicturePtr dst,
44 PictFormatPtr pict_format,
45 CARD16 width, CARD16 height)
46 {
47 PixmapPtr pixmap;
48 PicturePtr picture;
49 int error;
50
51 if (!pict_format) {
52 if (dst->polyEdge == PolyEdgeSharp)
53 pict_format = PictureMatchFormat(screen, 1, PICT_a1);
54 else
55 pict_format = PictureMatchFormat(screen, 8, PICT_a8);
56 if (!pict_format)
57 return 0;
58 }
59
60 pixmap = glamor_create_pixmap(screen, 0, 0,
61 pict_format->depth,
62 GLAMOR_CREATE_PIXMAP_CPU);
63
64 if (!pixmap)
65 return 0;
66 picture = CreatePicture(0, &pixmap->drawable, pict_format,
67 0, 0, serverClient, &error);
68 glamor_destroy_pixmap(pixmap);
69 return picture;
70 }
71
72 /**
73 * glamor_trapezoids will generate trapezoid mask accumulating in
74 * system memory.
75 */
76 void
glamor_trapezoids(CARD8 op,PicturePtr src,PicturePtr dst,PictFormatPtr mask_format,INT16 x_src,INT16 y_src,int ntrap,xTrapezoid * traps)77 glamor_trapezoids(CARD8 op,
78 PicturePtr src, PicturePtr dst,
79 PictFormatPtr mask_format, INT16 x_src, INT16 y_src,
80 int ntrap, xTrapezoid *traps)
81 {
82 ScreenPtr screen = dst->pDrawable->pScreen;
83 BoxRec bounds;
84 PicturePtr picture;
85 INT16 x_dst, y_dst;
86 INT16 x_rel, y_rel;
87 int width, height, stride;
88 PixmapPtr pixmap;
89 pixman_image_t *image = NULL;
90
91 /* If a mask format wasn't provided, we get to choose, but behavior should
92 * be as if there was no temporary mask the traps were accumulated into.
93 */
94 if (!mask_format) {
95 if (dst->polyEdge == PolyEdgeSharp)
96 mask_format = PictureMatchFormat(screen, 1, PICT_a1);
97 else
98 mask_format = PictureMatchFormat(screen, 8, PICT_a8);
99 for (; ntrap; ntrap--, traps++)
100 glamor_trapezoids(op, src, dst, mask_format, x_src,
101 y_src, 1, traps);
102 return;
103 }
104
105 miTrapezoidBounds(ntrap, traps, &bounds);
106
107 if (bounds.y1 >= bounds.y2 || bounds.x1 >= bounds.x2)
108 return;
109
110 x_dst = traps[0].left.p1.x >> 16;
111 y_dst = traps[0].left.p1.y >> 16;
112
113 width = bounds.x2 - bounds.x1;
114 height = bounds.y2 - bounds.y1;
115 stride = PixmapBytePad(width, mask_format->depth);
116
117 picture = glamor_create_mask_picture(screen, dst, mask_format,
118 width, height);
119 if (!picture)
120 return;
121
122 image = pixman_image_create_bits(picture->format,
123 width, height, NULL, stride);
124 if (!image) {
125 FreePicture(picture, 0);
126 return;
127 }
128
129 for (; ntrap; ntrap--, traps++)
130 pixman_rasterize_trapezoid(image,
131 (pixman_trapezoid_t *) traps,
132 -bounds.x1, -bounds.y1);
133
134 pixmap = glamor_get_drawable_pixmap(picture->pDrawable);
135
136 screen->ModifyPixmapHeader(pixmap, width, height,
137 mask_format->depth,
138 BitsPerPixel(mask_format->depth),
139 PixmapBytePad(width,
140 mask_format->depth),
141 pixman_image_get_data(image));
142
143 x_rel = bounds.x1 + x_src - x_dst;
144 y_rel = bounds.y1 + y_src - y_dst;
145
146 CompositePicture(op, src, picture, dst,
147 x_rel, y_rel,
148 0, 0,
149 bounds.x1, bounds.y1,
150 bounds.x2 - bounds.x1, bounds.y2 - bounds.y1);
151
152 if (image)
153 pixman_image_unref(image);
154
155 FreePicture(picture, 0);
156 }
157