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
|
/*
* QEMU graphical console -- opengl helper bits
*
* Copyright (c) 2014 Red Hat
*
* Authors:
* Gerd Hoffmann <kraxel@redhat.com>
*
* 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 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.
*/
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "ui/console.h"
#include "ui/shader.h"
/* ---------------------------------------------------------------------- */
bool console_gl_check_format(DisplayChangeListener *dcl,
pixman_format_code_t format)
{
switch (format) {
case PIXMAN_BE_b8g8r8x8:
case PIXMAN_BE_b8g8r8a8:
case PIXMAN_r5g6b5:
return true;
default:
return false;
}
}
void surface_gl_create_texture(QemuGLShader *gls,
DisplaySurface *surface)
{
assert(gls);
assert(QEMU_IS_ALIGNED(surface_stride(surface), surface_bytes_per_pixel(surface)));
switch (surface->format) {
case PIXMAN_BE_b8g8r8x8:
case PIXMAN_BE_b8g8r8a8:
surface->glformat = GL_BGRA_EXT;
surface->gltype = GL_UNSIGNED_BYTE;
break;
case PIXMAN_BE_x8r8g8b8:
case PIXMAN_BE_a8r8g8b8:
surface->glformat = GL_RGBA;
surface->gltype = GL_UNSIGNED_BYTE;
break;
case PIXMAN_r5g6b5:
surface->glformat = GL_RGB;
surface->gltype = GL_UNSIGNED_SHORT_5_6_5;
break;
default:
g_assert_not_reached();
}
glGenTextures(1, &surface->texture);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, surface->texture);
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT,
surface_stride(surface) / surface_bytes_per_pixel(surface));
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,
surface_width(surface),
surface_height(surface),
0, surface->glformat, surface->gltype,
surface_data(surface));
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
}
void surface_gl_update_texture(QemuGLShader *gls,
DisplaySurface *surface,
int x, int y, int w, int h)
{
uint8_t *data = (void *)surface_data(surface);
assert(gls);
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT,
surface_stride(surface) / surface_bytes_per_pixel(surface));
glTexSubImage2D(GL_TEXTURE_2D, 0,
x, y, w, h,
surface->glformat, surface->gltype,
data + surface_stride(surface) * y
+ surface_bytes_per_pixel(surface) * x);
}
void surface_gl_render_texture(QemuGLShader *gls,
DisplaySurface *surface)
{
assert(gls);
glClearColor(0.1f, 0.1f, 0.1f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT);
qemu_gl_run_texture_blit(gls, false);
}
void surface_gl_destroy_texture(QemuGLShader *gls,
DisplaySurface *surface)
{
if (!surface || !surface->texture) {
return;
}
glDeleteTextures(1, &surface->texture);
surface->texture = 0;
}
void surface_gl_setup_viewport(QemuGLShader *gls,
DisplaySurface *surface,
int ww, int wh)
{
int gw, gh, stripe;
float sw, sh;
assert(gls);
gw = surface_width(surface);
gh = surface_height(surface);
sw = (float)ww/gw;
sh = (float)wh/gh;
if (sw < sh) {
stripe = wh - wh*sw/sh;
glViewport(0, stripe / 2, ww, wh - stripe);
} else {
stripe = ww - ww*sh/sw;
glViewport(stripe / 2, 0, ww - stripe, wh);
}
}
|
