aboutsummaryrefslogtreecommitdiff
path: root/render/wlr_renderer.c
blob: ac7629e420188398474ba9c4c61a9d432f8ffd62 (plain)
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
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
#include <assert.h>
#include <stdbool.h>
#include <stdlib.h>
#include <gbm.h>
#include <wlr/render/egl.h>
#include <wlr/render/gles2.h>
#include <wlr/render/interface.h>
#include <wlr/render/wlr_renderer.h>
#include <wlr/types/wlr_matrix.h>
#include <wlr/util/log.h>
#include "util/signal.h"
#include "render/pixel_format.h"
#include "render/wlr_renderer.h"

void wlr_renderer_init(struct wlr_renderer *renderer,
		const struct wlr_renderer_impl *impl) {
	assert(impl->begin);
	assert(impl->clear);
	assert(impl->scissor);
	assert(impl->render_subtexture_with_matrix);
	assert(impl->render_quad_with_matrix);
	assert(impl->get_shm_texture_formats);
	assert(impl->texture_from_pixels);
	renderer->impl = impl;

	wl_signal_init(&renderer->events.destroy);
}

void wlr_renderer_destroy(struct wlr_renderer *r) {
	if (!r) {
		return;
	}
	wlr_signal_emit_safe(&r->events.destroy, r);

	if (r->impl && r->impl->destroy) {
		r->impl->destroy(r);
	} else {
		free(r);
	}
}

bool wlr_renderer_bind_buffer(struct wlr_renderer *r,
		struct wlr_buffer *buffer) {
	assert(!r->rendering);
	if (!r->impl->bind_buffer) {
		return false;
	}
	return r->impl->bind_buffer(r, buffer);
}

void wlr_renderer_begin(struct wlr_renderer *r, uint32_t width, uint32_t height) {
	assert(!r->rendering);

	r->impl->begin(r, width, height);

	r->rendering = true;
}

void wlr_renderer_end(struct wlr_renderer *r) {
	assert(r->rendering);

	if (r->impl->end) {
		r->impl->end(r);
	}

	r->rendering = false;
}

void wlr_renderer_clear(struct wlr_renderer *r, const float color[static 4]) {
	assert(r->rendering);
	r->impl->clear(r, color);
}

void wlr_renderer_scissor(struct wlr_renderer *r, struct wlr_box *box) {
	assert(r->rendering);
	r->impl->scissor(r, box);
}

bool wlr_render_texture(struct wlr_renderer *r, struct wlr_texture *texture,
		const float projection[static 9], int x, int y, float alpha) {
	struct wlr_box box = {
		.x = x,
		.y = y,
		.width = texture->width,
		.height = texture->height,
	};

	float matrix[9];
	wlr_matrix_project_box(matrix, &box, WL_OUTPUT_TRANSFORM_NORMAL, 0,
		projection);

	return wlr_render_texture_with_matrix(r, texture, matrix, alpha);
}

bool wlr_render_texture_with_matrix(struct wlr_renderer *r,
		struct wlr_texture *texture, const float matrix[static 9],
		float alpha) {
	struct wlr_fbox box = {
		.x = 0,
		.y = 0,
		.width = texture->width,
		.height = texture->height,
	};
	return wlr_render_subtexture_with_matrix(r, texture, &box, matrix, alpha);
}

bool wlr_render_subtexture_with_matrix(struct wlr_renderer *r,
		struct wlr_texture *texture, const struct wlr_fbox *box,
		const float matrix[static 9], float alpha) {
	assert(r->rendering);
	return r->impl->render_subtexture_with_matrix(r, texture,
		box, matrix, alpha);
}

void wlr_render_rect(struct wlr_renderer *r, const struct wlr_box *box,
		const float color[static 4], const float projection[static 9]) {
	if (box->width == 0 || box->height == 0) {
		return;
	}
	assert(box->width > 0 && box->height > 0);
	float matrix[9];
	wlr_matrix_project_box(matrix, box, WL_OUTPUT_TRANSFORM_NORMAL, 0,
		projection);

	wlr_render_quad_with_matrix(r, color, matrix);
}

void wlr_render_quad_with_matrix(struct wlr_renderer *r,
		const float color[static 4], const float matrix[static 9]) {
	assert(r->rendering);
	r->impl->render_quad_with_matrix(r, color, matrix);
}

const uint32_t *wlr_renderer_get_shm_texture_formats(struct wlr_renderer *r,
		size_t *len) {
	return r->impl->get_shm_texture_formats(r, len);
}

bool wlr_renderer_resource_is_wl_drm_buffer(struct wlr_renderer *r,
		struct wl_resource *resource) {
	if (!r->impl->resource_is_wl_drm_buffer) {
		return false;
	}
	return r->impl->resource_is_wl_drm_buffer(r, resource);
}

void wlr_renderer_wl_drm_buffer_get_size(struct wlr_renderer *r,
		struct wl_resource *buffer, int *width, int *height) {
	if (!r->impl->wl_drm_buffer_get_size) {
		return;
	}
	return r->impl->wl_drm_buffer_get_size(r, buffer, width, height);
}

const struct wlr_drm_format_set *wlr_renderer_get_dmabuf_texture_formats(
		struct wlr_renderer *r) {
	if (!r->impl->get_dmabuf_texture_formats) {
		return NULL;
	}
	return r->impl->get_dmabuf_texture_formats(r);
}

const struct wlr_drm_format_set *wlr_renderer_get_render_formats(
		struct wlr_renderer *r) {
	if (!r->impl->get_render_formats) {
		return NULL;
	}
	return r->impl->get_render_formats(r);
}

bool wlr_renderer_read_pixels(struct wlr_renderer *r, uint32_t fmt,
		uint32_t *flags, uint32_t stride, uint32_t width, uint32_t height,
		uint32_t src_x, uint32_t src_y, uint32_t dst_x, uint32_t dst_y,
		void *data) {
	if (!r->impl->read_pixels) {
		return false;
	}
	return r->impl->read_pixels(r, fmt, flags, stride, width, height,
		src_x, src_y, dst_x, dst_y, data);
}

bool wlr_renderer_init_wl_display(struct wlr_renderer *r,
		struct wl_display *wl_display) {
	if (wl_display_init_shm(wl_display)) {
		wlr_log(WLR_ERROR, "Failed to initialize shm");
		return false;
	}

	size_t len;
	const uint32_t *formats = wlr_renderer_get_shm_texture_formats(r, &len);
	if (formats == NULL) {
		wlr_log(WLR_ERROR, "Failed to initialize shm: cannot get formats");
		return false;
	}

	bool argb8888 = false, xrgb8888 = false;
	for (size_t i = 0; i < len; ++i) {
		// ARGB8888 and XRGB8888 must be supported and are implicitly
		// advertised by wl_display_init_shm
		enum wl_shm_format fmt = convert_drm_format_to_wl_shm(formats[i]);
		switch (fmt) {
		case WL_SHM_FORMAT_ARGB8888:
			argb8888 = true;
			break;
		case WL_SHM_FORMAT_XRGB8888:
			xrgb8888 = true;
			break;
		default:
			wl_display_add_shm_format(wl_display, fmt);
		}
	}
	assert(argb8888 && xrgb8888);

	if (r->impl->init_wl_display) {
		if (!r->impl->init_wl_display(r, wl_display)) {
			return false;
		}
	}

	return true;
}

struct wlr_renderer *wlr_renderer_autocreate_with_drm_fd(int drm_fd) {
	struct gbm_device *gbm_device = gbm_create_device(drm_fd);
	if (!gbm_device) {
		wlr_log(WLR_ERROR, "Failed to create GBM device");
		return NULL;
	}

	struct wlr_egl *egl = wlr_egl_create(EGL_PLATFORM_GBM_KHR, gbm_device);
	if (egl == NULL) {
		wlr_log(WLR_ERROR, "Could not initialize EGL");
		gbm_device_destroy(gbm_device);
		return NULL;
	}

	egl->gbm_device = gbm_device;

	struct wlr_renderer *renderer = wlr_gles2_renderer_create(egl);
	if (!renderer) {
		wlr_log(WLR_ERROR, "Failed to create GLES2 renderer");
		wlr_egl_destroy(egl);
	}

	return renderer;
}

struct wlr_renderer *wlr_renderer_autocreate(struct wlr_backend *backend) {
	int drm_fd = wlr_backend_get_drm_fd(backend);
	if (drm_fd < 0) {
		wlr_log(WLR_ERROR, "Failed to get DRM FD from backend");
		return NULL;
	}

	return wlr_renderer_autocreate_with_drm_fd(drm_fd);
}

int wlr_renderer_get_drm_fd(struct wlr_renderer *r) {
	if (!r->impl->get_drm_fd) {
		return -1;
	}
	return r->impl->get_drm_fd(r);
}