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
|
#include <assert.h>
#include <stdlib.h>
#include "render/pixman.h"
static const struct wlr_render_pass_impl render_pass_impl;
static struct wlr_pixman_render_pass *get_render_pass(struct wlr_render_pass *wlr_pass) {
assert(wlr_pass->impl == &render_pass_impl);
struct wlr_pixman_render_pass *pass = wl_container_of(wlr_pass, pass, base);
return pass;
}
static struct wlr_pixman_texture *get_texture(struct wlr_texture *wlr_texture) {
assert(wlr_texture_is_pixman(wlr_texture));
struct wlr_pixman_texture *texture = wl_container_of(wlr_texture, texture, wlr_texture);
return texture;
}
static bool render_pass_submit(struct wlr_render_pass *wlr_pass) {
struct wlr_pixman_render_pass *pass = get_render_pass(wlr_pass);
wlr_buffer_end_data_ptr_access(pass->buffer->buffer);
wlr_buffer_unlock(pass->buffer->buffer);
free(pass);
return true;
}
static void render_pass_add_texture(struct wlr_render_pass *wlr_pass,
const struct wlr_render_texture_options *options) {
struct wlr_pixman_render_pass *pass = get_render_pass(wlr_pass);
struct wlr_pixman_texture *texture = get_texture(options->texture);
struct wlr_pixman_buffer *buffer = pass->buffer;
if (texture->buffer != NULL && !begin_pixman_data_ptr_access(texture->buffer,
&texture->image, WLR_BUFFER_DATA_PTR_ACCESS_READ)) {
return;
}
struct wlr_fbox src_fbox;
wlr_render_texture_options_get_src_box(options, &src_fbox);
struct wlr_box src_box = {
.x = roundf(src_fbox.x),
.y = roundf(src_fbox.y),
.width = roundf(src_fbox.width),
.height = roundf(src_fbox.height),
};
struct wlr_box dst_box;
wlr_render_texture_options_get_dst_box(options, &dst_box);
pixman_image_t *mask = NULL;
float alpha = wlr_render_texture_options_get_alpha(options);
if (alpha != 1) {
mask = pixman_image_create_solid_fill(&(struct pixman_color){
.alpha = 0xFFFF * alpha,
});
}
struct wlr_box orig_box;
wlr_box_transform(&orig_box, &dst_box, options->transform,
buffer->buffer->width, buffer->buffer->height);
int32_t dest_x, dest_y, width, height;
if (options->transform != WL_OUTPUT_TRANSFORM_NORMAL ||
orig_box.width != src_box.width ||
orig_box.height != src_box.height) {
// Cosinus/sinus values are extact integers for enum wl_output_transform entries
int tr_cos = 1, tr_sin = 0, tr_x = 0, tr_y = 0;
switch (options->transform) {
case WL_OUTPUT_TRANSFORM_NORMAL:
case WL_OUTPUT_TRANSFORM_FLIPPED:
break;
case WL_OUTPUT_TRANSFORM_90:
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
tr_cos = 0;
tr_sin = 1;
tr_x = buffer->buffer->height;
break;
case WL_OUTPUT_TRANSFORM_180:
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
tr_cos = -1;
tr_sin = 0;
tr_x = buffer->buffer->width;
tr_y = buffer->buffer->height;
break;
case WL_OUTPUT_TRANSFORM_270:
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
tr_cos = 0;
tr_sin = -1;
tr_y = buffer->buffer->width;
break;
}
struct pixman_transform transform;
pixman_transform_init_identity(&transform);
pixman_transform_rotate(&transform, NULL,
pixman_int_to_fixed(tr_cos), pixman_int_to_fixed(tr_sin));
if (options->transform >= WL_OUTPUT_TRANSFORM_FLIPPED) {
pixman_transform_scale(&transform, NULL,
pixman_int_to_fixed(-1), pixman_int_to_fixed(1));
}
pixman_transform_translate(&transform, NULL,
pixman_int_to_fixed(tr_x), pixman_int_to_fixed(tr_y));
pixman_transform_translate(&transform, NULL,
-pixman_int_to_fixed(orig_box.x), -pixman_int_to_fixed(orig_box.y));
pixman_transform_scale(&transform, NULL,
pixman_double_to_fixed(src_box.width / (double)orig_box.width),
pixman_double_to_fixed(src_box.height / (double)orig_box.height));
pixman_image_set_transform(texture->image, &transform);
dest_x = dest_y = 0;
width = buffer->buffer->width;
height = buffer->buffer->height;
} else {
pixman_image_set_transform(texture->image, NULL);
dest_x = dst_box.x;
dest_y = dst_box.y;
width = src_box.width;
height = src_box.height;
}
pixman_image_set_clip_region32(buffer->image, (pixman_region32_t *)options->clip);
pixman_image_composite32(PIXMAN_OP_OVER, texture->image, mask,
buffer->image, src_box.x, src_box.y, 0, 0, dest_x, dest_y,
width, height);
pixman_image_set_clip_region32(buffer->image, NULL);
pixman_image_set_transform(texture->image, NULL);
if (texture->buffer != NULL) {
wlr_buffer_end_data_ptr_access(texture->buffer);
}
if (mask != NULL) {
pixman_image_unref(mask);
}
}
static void render_pass_add_rect(struct wlr_render_pass *wlr_pass,
const struct wlr_render_rect_options *options) {
struct wlr_pixman_render_pass *pass = get_render_pass(wlr_pass);
struct wlr_pixman_buffer *buffer = pass->buffer;
struct wlr_box box = options->box;
pixman_op_t op = 0;
switch (options->blend_mode) {
case WLR_RENDER_BLEND_MODE_PREMULTIPLIED:
op = options->color.a == 1 ? PIXMAN_OP_SRC : PIXMAN_OP_OVER;
break;
case WLR_RENDER_BLEND_MODE_NONE:
op = PIXMAN_OP_SRC;
break;
}
assert(op != 0);
struct pixman_color color = {
.red = options->color.r * 0xFFFF,
.green = options->color.g * 0xFFFF,
.blue = options->color.b * 0xFFFF,
.alpha = options->color.a * 0xFFFF,
};
pixman_image_t *fill = pixman_image_create_solid_fill(&color);
pixman_image_set_clip_region32(buffer->image, (pixman_region32_t *)options->clip);
pixman_image_composite32(op, fill, NULL, buffer->image,
0, 0, 0, 0, box.x, box.y, box.width, box.height);
pixman_image_set_clip_region32(buffer->image, NULL);
pixman_image_unref(fill);
}
static const struct wlr_render_pass_impl render_pass_impl = {
.submit = render_pass_submit,
.add_texture = render_pass_add_texture,
.add_rect = render_pass_add_rect,
};
struct wlr_pixman_render_pass *begin_pixman_render_pass(
struct wlr_pixman_buffer *buffer) {
struct wlr_pixman_render_pass *pass = calloc(1, sizeof(*pass));
if (pass == NULL) {
return NULL;
}
wlr_render_pass_init(&pass->base, &render_pass_impl);
if (!begin_pixman_data_ptr_access(buffer->buffer, &buffer->image,
WLR_BUFFER_DATA_PTR_ACCESS_READ | WLR_BUFFER_DATA_PTR_ACCESS_WRITE)) {
free(pass);
return NULL;
}
wlr_buffer_lock(buffer->buffer);
pass->buffer = buffer;
return pass;
}
|
