aboutsummaryrefslogtreecommitdiff
path: root/render/gles2/texture.c
blob: 6cfd103d3addff58aed26f771954a07a3d7a1cf8 (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
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
#include <assert.h>
#include <drm_fourcc.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <stdint.h>
#include <stdlib.h>
#include <wayland-server-protocol.h>
#include <wayland-util.h>
#include <wlr/render/egl.h>
#include <wlr/render/interface.h>
#include <wlr/render/wlr_texture.h>
#include <wlr/types/wlr_matrix.h>
#include <wlr/util/log.h>
#include "render/egl.h"
#include "render/gles2.h"
#include "render/pixel_format.h"
#include "types/wlr_buffer.h"

static const struct wlr_texture_impl texture_impl;

bool wlr_texture_is_gles2(struct wlr_texture *wlr_texture) {
	return wlr_texture->impl == &texture_impl;
}

struct wlr_gles2_texture *gles2_get_texture(
		struct wlr_texture *wlr_texture) {
	assert(wlr_texture_is_gles2(wlr_texture));
	struct wlr_gles2_texture *texture = wl_container_of(wlr_texture, texture, wlr_texture);
	return texture;
}

static bool gles2_texture_update_from_buffer(struct wlr_texture *wlr_texture,
		struct wlr_buffer *buffer, const pixman_region32_t *damage) {
	struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);

	if (texture->target != GL_TEXTURE_2D || texture->image != EGL_NO_IMAGE_KHR) {
		return false;
	}

	void *data;
	uint32_t format;
	size_t stride;
	if (!wlr_buffer_begin_data_ptr_access(buffer,
			WLR_BUFFER_DATA_PTR_ACCESS_READ, &data, &format, &stride)) {
		return false;
	}

	if (format != texture->drm_format) {
		wlr_buffer_end_data_ptr_access(buffer);
		return false;
	}

	const struct wlr_gles2_pixel_format *fmt =
		get_gles2_format_from_drm(texture->drm_format);
	assert(fmt);

	const struct wlr_pixel_format_info *drm_fmt =
		drm_get_pixel_format_info(texture->drm_format);
	assert(drm_fmt);
	if (pixel_format_info_pixels_per_block(drm_fmt) != 1) {
		wlr_buffer_end_data_ptr_access(buffer);
		wlr_log(WLR_ERROR, "Cannot update texture: block formats are not supported");
		return false;
	}

	if (!pixel_format_info_check_stride(drm_fmt, stride, buffer->width)) {
		wlr_buffer_end_data_ptr_access(buffer);
		return false;
	}

	struct wlr_egl_context prev_ctx;
	wlr_egl_save_context(&prev_ctx);
	wlr_egl_make_current(texture->renderer->egl);

	push_gles2_debug(texture->renderer);

	glBindTexture(GL_TEXTURE_2D, texture->tex);

	int rects_len = 0;
	const pixman_box32_t *rects = pixman_region32_rectangles(damage, &rects_len);

	for (int i = 0; i < rects_len; i++) {
		pixman_box32_t rect = rects[i];

		glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, stride / drm_fmt->bytes_per_block);
		glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, rect.x1);
		glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, rect.y1);

		int width = rect.x2 - rect.x1;
		int height = rect.y2 - rect.y1;
		glTexSubImage2D(GL_TEXTURE_2D, 0, rect.x1, rect.y1, width, height,
			fmt->gl_format, fmt->gl_type, data);
	}

	glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0);
	glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0);
	glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0);

	glBindTexture(GL_TEXTURE_2D, 0);

	pop_gles2_debug(texture->renderer);

	wlr_egl_restore_context(&prev_ctx);

	wlr_buffer_end_data_ptr_access(buffer);

	return true;
}

static bool gles2_texture_invalidate(struct wlr_gles2_texture *texture) {
	if (texture->image == EGL_NO_IMAGE_KHR) {
		return false;
	}
	if (texture->target == GL_TEXTURE_EXTERNAL_OES) {
		// External changes are immediately made visible by the GL implementation
		return true;
	}

	struct wlr_egl_context prev_ctx;
	wlr_egl_save_context(&prev_ctx);
	wlr_egl_make_current(texture->renderer->egl);

	push_gles2_debug(texture->renderer);

	glBindTexture(texture->target, texture->tex);
	texture->renderer->procs.glEGLImageTargetTexture2DOES(texture->target,
		texture->image);
	glBindTexture(texture->target, 0);

	pop_gles2_debug(texture->renderer);

	wlr_egl_restore_context(&prev_ctx);

	return true;
}

void gles2_texture_destroy(struct wlr_gles2_texture *texture) {
	wl_list_remove(&texture->link);
	if (texture->buffer != NULL) {
		wlr_addon_finish(&texture->buffer_addon);
	}

	struct wlr_egl_context prev_ctx;
	wlr_egl_save_context(&prev_ctx);
	wlr_egl_make_current(texture->renderer->egl);

	push_gles2_debug(texture->renderer);

	glDeleteTextures(1, &texture->tex);
	wlr_egl_destroy_image(texture->renderer->egl, texture->image);

	pop_gles2_debug(texture->renderer);

	wlr_egl_restore_context(&prev_ctx);

	free(texture);
}

static void gles2_texture_unref(struct wlr_texture *wlr_texture) {
	struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
	if (texture->buffer != NULL) {
		// Keep the texture around, in case the buffer is re-used later. We're
		// still listening to the buffer's destroy event.
		wlr_buffer_unlock(texture->buffer);
	} else {
		gles2_texture_destroy(texture);
	}
}

static const struct wlr_texture_impl texture_impl = {
	.update_from_buffer = gles2_texture_update_from_buffer,
	.destroy = gles2_texture_unref,
};

static struct wlr_gles2_texture *gles2_texture_create(
		struct wlr_gles2_renderer *renderer, uint32_t width, uint32_t height) {
	struct wlr_gles2_texture *texture =
		calloc(1, sizeof(struct wlr_gles2_texture));
	if (texture == NULL) {
		wlr_log_errno(WLR_ERROR, "Allocation failed");
		return NULL;
	}
	wlr_texture_init(&texture->wlr_texture, &renderer->wlr_renderer,
		&texture_impl, width, height);
	texture->renderer = renderer;
	wl_list_insert(&renderer->textures, &texture->link);
	return texture;
}

static struct wlr_texture *gles2_texture_from_pixels(
		struct wlr_renderer *wlr_renderer,
		uint32_t drm_format, uint32_t stride, uint32_t width,
		uint32_t height, const void *data) {
	struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);

	const struct wlr_gles2_pixel_format *fmt =
		get_gles2_format_from_drm(drm_format);
	if (fmt == NULL) {
		wlr_log(WLR_ERROR, "Unsupported pixel format 0x%"PRIX32, drm_format);
		return NULL;
	}

	const struct wlr_pixel_format_info *drm_fmt =
		drm_get_pixel_format_info(drm_format);
	assert(drm_fmt);
	if (pixel_format_info_pixels_per_block(drm_fmt) != 1) {
		wlr_log(WLR_ERROR, "Cannot upload texture: block formats are not supported");
		return NULL;
	}

	if (!pixel_format_info_check_stride(drm_fmt, stride, width)) {
		return NULL;
	}

	struct wlr_gles2_texture *texture =
		gles2_texture_create(renderer, width, height);
	if (texture == NULL) {
		return NULL;
	}
	texture->target = GL_TEXTURE_2D;
	texture->has_alpha = fmt->has_alpha;
	texture->drm_format = fmt->drm_format;

	GLint internal_format = fmt->gl_internalformat;
	if (!internal_format) {
		internal_format = fmt->gl_format;
	}

	struct wlr_egl_context prev_ctx;
	wlr_egl_save_context(&prev_ctx);
	wlr_egl_make_current(renderer->egl);

	push_gles2_debug(renderer);

	glGenTextures(1, &texture->tex);
	glBindTexture(GL_TEXTURE_2D, texture->tex);

	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
	glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, stride / drm_fmt->bytes_per_block);
	glTexImage2D(GL_TEXTURE_2D, 0, internal_format, width, height, 0,
		fmt->gl_format, fmt->gl_type, data);
	glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0);

	glBindTexture(GL_TEXTURE_2D, 0);

	pop_gles2_debug(renderer);

	wlr_egl_restore_context(&prev_ctx);

	return &texture->wlr_texture;
}

static struct wlr_texture *gles2_texture_from_dmabuf(
		struct wlr_renderer *wlr_renderer,
		struct wlr_dmabuf_attributes *attribs) {
	struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);

	if (!renderer->procs.glEGLImageTargetTexture2DOES) {
		return NULL;
	}

	struct wlr_gles2_texture *texture =
		gles2_texture_create(renderer, attribs->width, attribs->height);
	if (texture == NULL) {
		return NULL;
	}
	texture->drm_format = DRM_FORMAT_INVALID; // texture can't be written anyways

	const struct wlr_pixel_format_info *drm_fmt =
		drm_get_pixel_format_info(attribs->format);
	if (drm_fmt != NULL) {
		texture->has_alpha = drm_fmt->has_alpha;
	} else {
		// We don't know, assume the texture has an alpha channel
		texture->has_alpha = true;
	}

	struct wlr_egl_context prev_ctx;
	wlr_egl_save_context(&prev_ctx);
	wlr_egl_make_current(renderer->egl);

	bool external_only;
	texture->image =
		wlr_egl_create_image_from_dmabuf(renderer->egl, attribs, &external_only);
	if (texture->image == EGL_NO_IMAGE_KHR) {
		wlr_log(WLR_ERROR, "Failed to create EGL image from DMA-BUF");
		wlr_egl_restore_context(&prev_ctx);
		wl_list_remove(&texture->link);
		free(texture);
		return NULL;
	}

	texture->target = external_only ? GL_TEXTURE_EXTERNAL_OES : GL_TEXTURE_2D;

	push_gles2_debug(renderer);

	glGenTextures(1, &texture->tex);
	glBindTexture(texture->target, texture->tex);
	glTexParameteri(texture->target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
	glTexParameteri(texture->target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
	renderer->procs.glEGLImageTargetTexture2DOES(texture->target, texture->image);
	glBindTexture(texture->target, 0);

	pop_gles2_debug(renderer);

	wlr_egl_restore_context(&prev_ctx);

	return &texture->wlr_texture;
}

static void texture_handle_buffer_destroy(struct wlr_addon *addon) {
	struct wlr_gles2_texture *texture =
		wl_container_of(addon, texture, buffer_addon);
	gles2_texture_destroy(texture);
}

static const struct wlr_addon_interface texture_addon_impl = {
	.name = "wlr_gles2_texture",
	.destroy = texture_handle_buffer_destroy,
};

static struct wlr_texture *gles2_texture_from_dmabuf_buffer(
		struct wlr_gles2_renderer *renderer, struct wlr_buffer *buffer,
		struct wlr_dmabuf_attributes *dmabuf) {
	struct wlr_addon *addon =
		wlr_addon_find(&buffer->addons, renderer, &texture_addon_impl);
	if (addon != NULL) {
		struct wlr_gles2_texture *texture =
			wl_container_of(addon, texture, buffer_addon);
		if (!gles2_texture_invalidate(texture)) {
			wlr_log(WLR_ERROR, "Failed to invalidate texture");
			return false;
		}
		wlr_buffer_lock(texture->buffer);
		return &texture->wlr_texture;
	}

	struct wlr_texture *wlr_texture =
		gles2_texture_from_dmabuf(&renderer->wlr_renderer, dmabuf);
	if (wlr_texture == NULL) {
		return false;
	}

	struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
	texture->buffer = wlr_buffer_lock(buffer);
	wlr_addon_init(&texture->buffer_addon, &buffer->addons,
		renderer, &texture_addon_impl);

	return &texture->wlr_texture;
}

struct wlr_texture *gles2_texture_from_buffer(struct wlr_renderer *wlr_renderer,
		struct wlr_buffer *buffer) {
	struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);

	void *data;
	uint32_t format;
	size_t stride;
	struct wlr_dmabuf_attributes dmabuf;
	if (wlr_buffer_get_dmabuf(buffer, &dmabuf)) {
		return gles2_texture_from_dmabuf_buffer(renderer, buffer, &dmabuf);
	} else if (wlr_buffer_begin_data_ptr_access(buffer,
			WLR_BUFFER_DATA_PTR_ACCESS_READ, &data, &format, &stride)) {
		struct wlr_texture *tex = gles2_texture_from_pixels(wlr_renderer,
			format, stride, buffer->width, buffer->height, data);
		wlr_buffer_end_data_ptr_access(buffer);
		return tex;
	} else {
		return NULL;
	}
}

void wlr_gles2_texture_get_attribs(struct wlr_texture *wlr_texture,
		struct wlr_gles2_texture_attribs *attribs) {
	struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
	*attribs = (struct wlr_gles2_texture_attribs){
		.target = texture->target,
		.tex = texture->tex,
		.has_alpha = texture->has_alpha,
	};
}