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
|
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <wlr/render/interface.h>
#include <wlr/render/wlr_renderer.h>
#include <wlr/types/wlr_matrix.h>
#include "render/pass.h"
struct wlr_render_pass_legacy {
struct wlr_render_pass base;
struct wlr_renderer *renderer;
int width, height;
};
void wlr_render_pass_init(struct wlr_render_pass *render_pass,
const struct wlr_render_pass_impl *impl) {
assert(impl->submit && impl->add_texture && impl->add_rect);
*render_pass = (struct wlr_render_pass){
.impl = impl,
};
}
bool wlr_render_pass_submit(struct wlr_render_pass *render_pass) {
return render_pass->impl->submit(render_pass);
}
void wlr_render_pass_add_texture(struct wlr_render_pass *render_pass,
const struct wlr_render_texture_options *options) {
// make sure the texture source box does not try and sample outside of the
// texture
if (!wlr_fbox_empty(&options->src_box)) {
const struct wlr_fbox *box = &options->src_box;
assert(box->x >= 0 && box->y >= 0 &&
box->x + box->width <= options->texture->width &&
box->y + box->height <= options->texture->height);
}
render_pass->impl->add_texture(render_pass, options);
}
void wlr_render_pass_add_rect(struct wlr_render_pass *render_pass,
const struct wlr_render_rect_options *options) {
assert(options->box.width >= 0 && options->box.height >= 0);
render_pass->impl->add_rect(render_pass, options);
}
void wlr_render_texture_options_get_src_box(const struct wlr_render_texture_options *options,
struct wlr_fbox *box) {
*box = options->src_box;
if (wlr_fbox_empty(box)) {
*box = (struct wlr_fbox){
.width = options->texture->width,
.height = options->texture->height,
};
}
}
void wlr_render_texture_options_get_dst_box(const struct wlr_render_texture_options *options,
struct wlr_box *box) {
*box = options->dst_box;
if (wlr_box_empty(box)) {
box->width = options->texture->width;
box->height = options->texture->height;
}
}
float wlr_render_texture_options_get_alpha(const struct wlr_render_texture_options *options) {
if (options->alpha == NULL) {
return 1;
}
return *options->alpha;
}
void wlr_render_rect_options_get_box(const struct wlr_render_rect_options *options,
const struct wlr_buffer *buffer, struct wlr_box *box) {
if (wlr_box_empty(&options->box)) {
*box = (struct wlr_box){
.width = buffer->width,
.height = buffer->height,
};
return;
}
*box = options->box;
}
static const struct wlr_render_pass_impl legacy_impl;
static struct wlr_render_pass_legacy *legacy_pass_from_pass(struct wlr_render_pass *pass) {
assert(pass->impl == &legacy_impl);
struct wlr_render_pass_legacy *legacy = wl_container_of(pass, legacy, base);
return legacy;
}
static bool legacy_submit(struct wlr_render_pass *wlr_pass) {
struct wlr_render_pass_legacy *pass = legacy_pass_from_pass(wlr_pass);
wlr_renderer_end(pass->renderer);
free(pass);
return true;
}
static void get_clip_region(struct wlr_render_pass_legacy *pass,
const pixman_region32_t *in, pixman_region32_t *out) {
if (in != NULL) {
pixman_region32_init(out);
pixman_region32_copy(out, in);
} else {
pixman_region32_init_rect(out, 0, 0, pass->width, pass->height);
}
}
static void scissor(struct wlr_renderer *renderer, const pixman_box32_t *rect) {
struct wlr_box box = {
.x = rect->x1,
.y = rect->y1,
.width = rect->x2 - rect->x1,
.height = rect->y2 - rect->y1,
};
wlr_renderer_scissor(renderer, &box);
}
static void legacy_add_texture(struct wlr_render_pass *wlr_pass,
const struct wlr_render_texture_options *options) {
struct wlr_render_pass_legacy *pass = legacy_pass_from_pass(wlr_pass);
struct wlr_texture *texture = options->texture;
struct wlr_fbox src_box;
wlr_render_texture_options_get_src_box(options, &src_box);
struct wlr_box dst_box;
wlr_render_texture_options_get_dst_box(options, &dst_box);
float alpha = wlr_render_texture_options_get_alpha(options);
float proj[9], matrix[9];
wlr_matrix_identity(proj);
wlr_matrix_project_box(matrix, &dst_box, options->transform, 0.0, proj);
pixman_region32_t clip;
get_clip_region(pass, options->clip, &clip);
float black[4] = {0};
int rects_len = 0;
const pixman_box32_t *rects = pixman_region32_rectangles(&clip, &rects_len);
for (int i = 0; i < rects_len; i++) {
scissor(pass->renderer, &rects[i]);
if (options->blend_mode == WLR_RENDER_BLEND_MODE_NONE) {
wlr_renderer_clear(pass->renderer, black);
}
wlr_render_subtexture_with_matrix(pass->renderer, texture, &src_box, matrix, alpha);
}
wlr_renderer_scissor(pass->renderer, NULL);
pixman_region32_fini(&clip);
}
static void legacy_add_rect(struct wlr_render_pass *wlr_pass,
const struct wlr_render_rect_options *options) {
struct wlr_render_pass_legacy *pass = legacy_pass_from_pass(wlr_pass);
float proj[9], matrix[9];
wlr_matrix_identity(proj);
wlr_matrix_project_box(matrix, &options->box, WL_OUTPUT_TRANSFORM_NORMAL, 0.0, proj);
pixman_region32_t clip;
get_clip_region(pass, options->clip, &clip);
pixman_region32_intersect_rect(&clip, &clip,
options->box.x, options->box.y, options->box.width, options->box.height);
float color[4] = {
options->color.r,
options->color.g,
options->color.b,
options->color.a,
};
int rects_len = 0;
const pixman_box32_t *rects = pixman_region32_rectangles(&clip, &rects_len);
for (int i = 0; i < rects_len; i++) {
scissor(pass->renderer, &rects[i]);
switch (options->blend_mode) {
case WLR_RENDER_BLEND_MODE_PREMULTIPLIED:
wlr_render_quad_with_matrix(pass->renderer, color, matrix);
break;
case WLR_RENDER_BLEND_MODE_NONE:
wlr_renderer_clear(pass->renderer, color);
break;
}
}
wlr_renderer_scissor(pass->renderer, NULL);
pixman_region32_fini(&clip);
}
static const struct wlr_render_pass_impl legacy_impl = {
.submit = legacy_submit,
.add_texture = legacy_add_texture,
.add_rect = legacy_add_rect,
};
struct wlr_render_pass *begin_legacy_buffer_render_pass(struct wlr_renderer *renderer,
struct wlr_buffer *buffer) {
if (renderer->rendering) {
return NULL;
}
struct wlr_render_pass_legacy *pass = calloc(1, sizeof(*pass));
if (pass == NULL) {
return NULL;
}
wlr_render_pass_init(&pass->base, &legacy_impl);
pass->renderer = renderer;
pass->width = buffer->width;
pass->height = buffer->height;
if (!wlr_renderer_begin_with_buffer(renderer, buffer)) {
free(pass);
return NULL;
}
return &pass->base;
}
|
