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
|
/*
* Copyright © 2009 Intel Corporation
* Copyright © 1998 Keith Packard
*
* 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
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*
* Authors:
* Zhigang Gong <zhigang.gong@gmail.com>
*
*/
#include "glamor_priv.h"
#include <dixfontstr.h>
#include "glamor_transform.h"
static const glamor_facet glamor_facet_poly_glyph_blt = {
.name = "poly_glyph_blt",
.vs_vars = "attribute vec2 primitive;\n",
.vs_exec = (" vec2 pos = vec2(0,0);\n"
GLAMOR_POS(gl_Position, primitive)),
};
static Bool
glamor_poly_glyph_blt_gl(DrawablePtr drawable, GCPtr gc,
int start_x, int y, unsigned int nglyph,
CharInfoPtr *ppci, void *pglyph_base)
{
ScreenPtr screen = drawable->pScreen;
glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
glamor_pixmap_private *pixmap_priv;
glamor_program *prog;
RegionPtr clip = gc->pCompositeClip;
int box_x, box_y;
pixmap_priv = glamor_get_pixmap_private(pixmap);
if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
goto bail;
glamor_make_current(glamor_priv);
prog = glamor_use_program_fill(pixmap, gc,
&glamor_priv->poly_glyph_blt_progs,
&glamor_facet_poly_glyph_blt);
if (!prog)
goto bail;
glEnableVertexAttribArray(GLAMOR_VERTEX_POS);
start_x += drawable->x;
y += drawable->y;
glamor_pixmap_loop(pixmap_priv, box_x, box_y) {
int x;
int n;
int num_points, max_points;
INT16 *points = NULL;
int off_x, off_y;
char *vbo_offset;
glamor_set_destination_drawable(drawable, box_x, box_y, FALSE, TRUE,
prog->matrix_uniform, &off_x, &off_y);
max_points = 500;
num_points = 0;
x = start_x;
for (n = 0; n < nglyph; n++) {
CharInfoPtr charinfo = ppci[n];
int w = GLYPHWIDTHPIXELS(charinfo);
int h = GLYPHHEIGHTPIXELS(charinfo);
uint8_t *glyphbits = FONTGLYPHBITS(NULL, charinfo);
if (w && h) {
int glyph_x = x + charinfo->metrics.leftSideBearing;
int glyph_y = y - charinfo->metrics.ascent;
int glyph_stride = GLYPHWIDTHBYTESPADDED(charinfo);
int xx, yy;
for (yy = 0; yy < h; yy++) {
uint8_t *glyph = glyphbits;
for (xx = 0; xx < w; glyph += ((xx&7) == 7), xx++) {
int pt_x_i = glyph_x + xx;
int pt_y_i = glyph_y + yy;
if (!(*glyph & (1 << (xx & 7))))
continue;
if (!RegionContainsPoint(clip, pt_x_i, pt_y_i, NULL))
continue;
if (!num_points) {
points = glamor_get_vbo_space(screen,
max_points *
(2 * sizeof (INT16)),
&vbo_offset);
glVertexAttribPointer(GLAMOR_VERTEX_POS,
2, GL_SHORT,
GL_FALSE, 0, vbo_offset);
}
*points++ = pt_x_i;
*points++ = pt_y_i;
num_points++;
if (num_points == max_points) {
glamor_put_vbo_space(screen);
glDrawArrays(GL_POINTS, 0, num_points);
num_points = 0;
}
}
glyphbits += glyph_stride;
}
}
x += charinfo->metrics.characterWidth;
}
if (num_points) {
glamor_put_vbo_space(screen);
glDrawArrays(GL_POINTS, 0, num_points);
}
}
glDisableVertexAttribArray(GLAMOR_VERTEX_POS);
return TRUE;
bail:
return FALSE;
}
void
glamor_poly_glyph_blt(DrawablePtr drawable, GCPtr gc,
int start_x, int y, unsigned int nglyph,
CharInfoPtr *ppci, void *pglyph_base)
{
if (glamor_poly_glyph_blt_gl(drawable, gc, start_x, y, nglyph, ppci,
pglyph_base))
return;
miPolyGlyphBlt(drawable, gc, start_x, y, nglyph,
ppci, pglyph_base);
}
static Bool
glamor_push_pixels_gl(GCPtr gc, PixmapPtr bitmap,
DrawablePtr drawable, int w, int h, int x, int y)
{
ScreenPtr screen = drawable->pScreen;
glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
glamor_pixmap_private *pixmap_priv;
uint8_t *bitmap_data = bitmap->devPrivate.ptr;
int bitmap_stride = bitmap->devKind;
glamor_program *prog;
RegionPtr clip = gc->pCompositeClip;
int box_x, box_y;
int yy, xx;
int num_points;
INT16 *points = NULL;
char *vbo_offset;
if (w * h > MAXINT / (2 * sizeof(float)))
goto bail;
pixmap_priv = glamor_get_pixmap_private(pixmap);
if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
goto bail;
glamor_make_current(glamor_priv);
prog = glamor_use_program_fill(pixmap, gc,
&glamor_priv->poly_glyph_blt_progs,
&glamor_facet_poly_glyph_blt);
if (!prog)
goto bail;
glEnableVertexAttribArray(GLAMOR_VERTEX_POS);
points = glamor_get_vbo_space(screen, w * h * sizeof(INT16) * 2,
&vbo_offset);
num_points = 0;
/* Note that because fb sets miTranslate in the GC, our incoming X
* and Y are in screen coordinate space (same for spans, but not
* other operations).
*/
for (yy = 0; yy < h; yy++) {
uint8_t *bitmap_row = bitmap_data + yy * bitmap_stride;
for (xx = 0; xx < w; xx++) {
if (bitmap_row[xx / 8] & (1 << xx % 8) &&
RegionContainsPoint(clip,
x + xx,
y + yy,
NULL)) {
*points++ = x + xx;
*points++ = y + yy;
num_points++;
}
}
}
glVertexAttribPointer(GLAMOR_VERTEX_POS, 2, GL_SHORT,
GL_FALSE, 0, vbo_offset);
glamor_put_vbo_space(screen);
glamor_pixmap_loop(pixmap_priv, box_x, box_y) {
glamor_set_destination_drawable(drawable, box_x, box_y, FALSE, TRUE,
prog->matrix_uniform, NULL, NULL);
glDrawArrays(GL_POINTS, 0, num_points);
}
glDisableVertexAttribArray(GLAMOR_VERTEX_POS);
return TRUE;
bail:
return FALSE;
}
void
glamor_push_pixels(GCPtr pGC, PixmapPtr pBitmap,
DrawablePtr pDrawable, int w, int h, int x, int y)
{
if (glamor_push_pixels_gl(pGC, pBitmap, pDrawable, w, h, x, y))
return;
miPushPixels(pGC, pBitmap, pDrawable, w, h, x, y);
}
|
