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
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "cairoint.h"
#include "cairo-gl-private.h"
#include <i915_drm.h> /* XXX dummy surface for glewInit() */
#include <sys/ioctl.h>
typedef struct _cairo_eagle_context {
cairo_gl_context_t base;
EGLDisplay display;
EGLContext context;
} cairo_eagle_context_t;
typedef struct _cairo_eagle_surface {
cairo_gl_surface_t base;
EGLSurface eagle;
} cairo_eagle_surface_t;
static void
_eagle_make_current (void *abstract_ctx,
cairo_gl_surface_t *abstract_surface)
{
cairo_eagle_context_t *ctx = abstract_ctx;
cairo_eagle_surface_t *surface = (cairo_eagle_surface_t *) abstract_surface;
eagleMakeCurrent (ctx->display, surface->eagle, surface->eagle, ctx->context);
}
static void
_eagle_swap_buffers (void *abstract_ctx,
cairo_gl_surface_t *abstract_surface)
{
cairo_eagle_context_t *ctx = abstract_ctx;
cairo_eagle_surface_t *surface = (cairo_eagle_surface_t *) abstract_surface;
eagleSwapBuffers (ctx->display, surface->eagle);
}
static void
_eagle_destroy (void *abstract_ctx)
{
}
static cairo_bool_t
_eagle_init (EGLDisplay display, EGLContext context)
{
const EGLint config_attribs[] = {
EGL_CONFIG_CAVEAT, EGL_NONE,
EGL_NONE
};
const EGLint surface_attribs[] = {
EGL_RENDER_BUFFER, EGL_BACK_BUFFER,
EGL_NONE
};
EGLConfig config;
EGLSurface dummy;
struct drm_i915_gem_create create;
struct drm_gem_flink flink;
int fd;
GLenum err;
if (! eagleChooseConfig (display, config_attribs, &config, 1, NULL)) {
fprintf (stderr, "Unable to choose config\n");
return FALSE;
}
/* XXX */
fd = eagleGetDisplayFD (display);
create.size = 4096;
if (ioctl (fd, DRM_IOCTL_I915_GEM_CREATE, &create) != 0) {
fprintf (stderr, "gem create failed: %m\n");
return FALSE;
}
flink.handle = create.handle;
if (ioctl (fd, DRM_IOCTL_GEM_FLINK, &flink) != 0) {
fprintf (stderr, "gem flink failed: %m\n");
return FALSE;
}
dummy = eagleCreateSurfaceForName (display, config, flink.name,
1, 1, 4, surface_attribs);
if (dummy == NULL) {
fprintf (stderr, "Failed to create dummy surface\n");
return FALSE;
}
eagleMakeCurrent (display, dummy, dummy, context);
}
cairo_gl_context_t *
cairo_eagle_context_create (EGLDisplay display, EGLContext context)
{
cairo_eagle_context_t *ctx;
cairo_status_t status;
if (! _eagle_init (display, context)) {
return _cairo_gl_context_create_in_error (CAIRO_STATUS_NO_MEMORY);
}
ctx = calloc (1, sizeof (cairo_eagle_context_t));
if (ctx == NULL)
return _cairo_gl_context_create_in_error (CAIRO_STATUS_NO_MEMORY);
ctx->display = display;
ctx->context = context;
ctx->base.make_current = _eagle_make_current;
ctx->base.swap_buffers = _eagle_swap_buffers;
ctx->base.destroy = _eagle_destroy;
status = _cairo_gl_context_init (&ctx->base);
if (status) {
free (ctx);
return _cairo_gl_context_create_in_error (status);
}
return &ctx->base;
}
cairo_surface_t *
cairo_gl_surface_create_for_eagle (cairo_gl_context_t *ctx,
EGLSurface eagle,
int width,
int height)
{
cairo_eagle_surface_t *surface;
if (ctx->status)
return _cairo_surface_create_in_error (ctx->status);
surface = calloc (1, sizeof (cairo_eagle_surface_t));
if (unlikely (surface == NULL))
return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
_cairo_gl_surface_init (ctx, &surface->base,
CAIRO_CONTENT_COLOR_ALPHA, width, height);
surface->eagle = eagle;
return &surface->base.base;
}
|
