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
|
local ffi = require 'ffi'
-- from
local VK_SERVER_EXECUTABLE = "/usr/bin/texture-share-vk-server"
local VK_SERVER_DEFAULT_LOCKFILE_PATH = "/tmp/vk_server/vk_server.lock"
local VK_SERVER_DEFAULT_SOCKET_PATH = "/tmp/vk_server/vk_server.sock"
local VK_SERVER_DEFAULT_SHMEM_PREFIX = "shmem_img_"
-- from gl.h
local GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME = 0x8CD1
local GL_COLOR_ATTACHMENT0 = 0x8CE0
local GL_FRAMEBUFFER = 0x8D40
local GL_TEXTURE_2D = 0x0DE1
ffi.cdef [[
// gl.h
typedef int GLint;
typedef unsigned int GLuint;
typedef unsigned int GLenum;
void glGetFramebufferAttachmentParameteriv(GLenum target, GLenum attachment,
GLenum pname, GLint *params);
// texture_share_ipc.h
typedef enum ImgFormat {
R8G8B8A8,
R8G8B8,
B8G8R8A8,
B8G8R8,
Undefined,
} ImgFormat;
// texture_share_gl_client.h
typedef enum ImageLookupResult {
Error = -1,
NotFound = 0,
Found = 1,
RequiresUpdate = 2,
} ImageLookupResult;
typedef struct ClientImageDataGuard ClientImageDataGuard;
typedef struct GlClient GlClient;
typedef struct GlImageExtent {
GLint top_left[2];
GLint bottom_right[2];
} GlImageExtent;
bool gl_client_initialize_external_gl(void);
struct GlClient *gl_client_new(const char *socket_path, uint64_t timeout_in_millis);
struct GlClient *gl_client_new_with_server_launch(const char *socket_path,
uint64_t client_timeout_in_millis,
const char *server_program,
const char *server_lock_path,
const char *server_socket_path,
const char *shmem_prefix,
uint64_t server_socket_timeout_in_millis,
uint64_t server_connection_wait_timeout_in_millis,
uint64_t server_ipc_timeout_in_millis,
uint64_t server_lockfile_timeout_in_millis,
uint64_t server_spawn_timeout_in_millis);
void gl_client_destroy(struct GlClient *gl_client);
enum ImageLookupResult gl_client_init_image(struct GlClient *gl_client,
const char *image_name,
uint32_t width,
uint32_t height,
ImgFormat format,
bool overwrite_existing);
int gl_client_send_image(struct GlClient *gl_client,
const char *image_name,
GLuint src_texture_id,
GLenum src_texture_target,
bool invert,
GLuint prev_fbo,
const struct GlImageExtent *extents);
]]
local tvs = ffi.load("texture_share_gl_client")
local gl = ffi.load("GL")
local width, height
local canvas
local client, image
function love.load()
width, height = love.graphics.getDimensions()
canvas = love.graphics.newCanvas(width, height)
assert(tvs.gl_client_initialize_external_gl(), "no init")
client = assert(tvs.gl_client_new_with_server_launch(
VK_SERVER_DEFAULT_SOCKET_PATH,
1000,
VK_SERVER_EXECUTABLE,
VK_SERVER_DEFAULT_LOCKFILE_PATH,
VK_SERVER_DEFAULT_SOCKET_PATH,
VK_SERVER_DEFAULT_SHMEM_PREFIX,
2000,
2000,
2000,
2000,
2000
), "failed to connect or launch tsv server")
image = assert(tvs.gl_client_init_image(client, "love2d", width, height, ffi.C.R8G8B8A8, true) > 0)
end
local angle = 0
function love.update(dt)
angle = angle + 5 * dt
end
function love.draw()
love.graphics.setCanvas(canvas)
love.graphics.clear(0, 0, 0, 0)
love.graphics.translate(width/2, height/2)
love.graphics.rotate(angle)
love.graphics.setColor(1, 0, 0, 1)
love.graphics.rectangle("fill", -150,-150, 300,300)
local name_ptr = ffi.typeof('GLint[1]')()
gl.glGetFramebufferAttachmentParameteriv(
GL_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,
name_ptr
)
love.graphics.setCanvas()
tvs.gl_client_send_image(
client, "love2d",
name_ptr[0],
GL_TEXTURE_2D,
false, 0, nil
)
love.graphics.reset()
love.graphics.setBlendMode("alpha", "premultiplied")
love.graphics.draw(canvas)
end
|
