mirrors/wlroots
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/wlroots/wlroots.git synced 2025-12-15 08:56:26 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

backend/headless: use FBOs instead of pbuffers

Browse source
This commit is contained in:
Simon Ser 2020-03-10 17:07:49 +01:00 • committed by Drew DeVault
parent 5dc3a9c754
commit 40513f1a0e
3 changed files with 86 additions and 33 deletions
Download patch file Download diff file Expand all files Collapse all files

87
backend/headless/output.c
View file

@ -1,4 +1,6 @@
#include <assert.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <stdlib.h>
#include <wlr/interfaces/wlr_output.h>
#include <wlr/render/wlr_renderer.h>
@ -12,33 +14,59 @@ static struct wlr_headless_output *headless_output_from_output(
return (struct wlr_headless_output *)wlr_output;
}
static EGLSurface egl_create_surface(struct wlr_egl *egl, unsigned int width,
unsigned int height) {
EGLint attribs[] = {EGL_WIDTH, width, EGL_HEIGHT, height, EGL_NONE};
EGLSurface surf = eglCreatePbufferSurface(egl->display, egl->config, attribs);
if (surf == EGL_NO_SURFACE) {
wlr_log(WLR_ERROR, "Failed to create EGL surface");
return EGL_NO_SURFACE;
static bool create_fbo(struct wlr_headless_output *output,
unsigned int width, unsigned int height) {
if (!wlr_egl_make_current(&output->backend->egl, EGL_NO_SURFACE, NULL)) {
return false;
}
return surf;
GLuint rbo;
glGenRenderbuffers(1, &rbo);
glBindRenderbuffer(GL_RENDERBUFFER, rbo);
glRenderbufferStorage(GL_RENDERBUFFER, output->backend->internal_format,
width, height);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
GLuint fbo;
glGenFramebuffers(1, &fbo);
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_RENDERBUFFER, rbo);
GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
if (status != GL_FRAMEBUFFER_COMPLETE) {
wlr_log(WLR_ERROR, "Failed to create FBO");
return false;
}
output->fbo = fbo;
output->rbo = rbo;
return true;
}
static void destroy_fbo(struct wlr_headless_output *output) {
if (!wlr_egl_make_current(&output->backend->egl, EGL_NO_SURFACE, NULL)) {
return;
}
glDeleteFramebuffers(1, &output->fbo);
glDeleteRenderbuffers(1, &output->rbo);
output->fbo = 0;
output->rbo = 0;
}
static bool output_set_custom_mode(struct wlr_output *wlr_output, int32_t width,
int32_t height, int32_t refresh) {
struct wlr_headless_output *output =
headless_output_from_output(wlr_output);
struct wlr_headless_backend *backend = output->backend;
if (refresh <= 0) {
refresh = HEADLESS_DEFAULT_REFRESH;
}
wlr_egl_destroy_surface(&backend->egl, output->egl_surface);
output->egl_surface = egl_create_surface(&backend->egl, width, height);
if (output->egl_surface == EGL_NO_SURFACE) {
wlr_log(WLR_ERROR, "Failed to recreate EGL surface");
destroy_fbo(output);
if (!create_fbo(output, width, height)) {
wlr_output_destroy(wlr_output);
return false;
}
@ -53,8 +81,17 @@ static bool output_attach_render(struct wlr_output *wlr_output,
int *buffer_age) {
struct wlr_headless_output *output =
headless_output_from_output(wlr_output);
return wlr_egl_make_current(&output->backend->egl, output->egl_surface,
buffer_age);
if (!wlr_egl_make_current(&output->backend->egl, EGL_NO_SURFACE, NULL)) {
return false;
}
glBindFramebuffer(GL_FRAMEBUFFER, output->fbo);
if (buffer_age != NULL) {
*buffer_age = 0; // We only have one buffer
}
return true;
}
static bool output_test(struct wlr_output *wlr_output) {
@ -88,11 +125,12 @@ static bool output_commit(struct wlr_output *wlr_output) {
}
if (wlr_output->pending.committed & WLR_OUTPUT_STATE_BUFFER) {
// Nothing needs to be done for pbuffers
// Nothing needs to be done for FBOs
wlr_output_send_present(wlr_output, NULL);
}
wlr_egl_make_current(&output->backend->egl, EGL_NO_SURFACE, NULL);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
return true;
}
@ -101,17 +139,15 @@ static void output_rollback(struct wlr_output *wlr_output) {
struct wlr_headless_output *output =
headless_output_from_output(wlr_output);
wlr_egl_make_current(&output->backend->egl, EGL_NO_SURFACE, NULL);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
}
static void output_destroy(struct wlr_output *wlr_output) {
struct wlr_headless_output *output =
headless_output_from_output(wlr_output);
wl_list_remove(&output->link);
wl_event_source_remove(output->frame_timer);
wlr_egl_destroy_surface(&output->backend->egl, output->egl_surface);
destroy_fbo(output);
free(output);
}
@ -149,9 +185,7 @@ struct wlr_output *wlr_headless_add_output(struct wlr_backend *wlr_backend,
backend->display);
struct wlr_output *wlr_output = &output->wlr_output;
output->egl_surface = egl_create_surface(&backend->egl, width, height);
if (output->egl_surface == EGL_NO_SURFACE) {
wlr_log(WLR_ERROR, "Failed to create EGL surface");
if (!create_fbo(output, width, height)) {
goto error;
}
@ -166,8 +200,7 @@ struct wlr_output *wlr_headless_add_output(struct wlr_backend *wlr_backend,
"Headless output %zd", backend->last_output_num);
wlr_output_set_description(wlr_output, description);
if (!wlr_egl_make_current(&output->backend->egl, output->egl_surface,
NULL)) {
if (!output_attach_render(wlr_output, NULL)) {
goto error;
}