84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
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#include <stdlib.h>
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include <GLES2/gl2.h>
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#include <wlr/interfaces/wlr_output.h>
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#include <wlr/util/log.h>
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#include "backend/headless.h"
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static void output_destroy(struct wlr_output *wlr_output) {
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struct wlr_headless_backend_output *output =
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(struct wlr_headless_backend_output *)wlr_output;
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wl_signal_emit(&output->backend->backend.events.output_remove,
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&output->wlr_output);
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wl_list_remove(&output->link);
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eglDestroySurface(output->backend->egl.display, output->egl_surface);
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free(output);
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}
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static const struct wlr_output_impl output_impl = {
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//.set_custom_mode = wlr_wl_output_set_custom_mode,
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//.transform = wlr_wl_output_transform,
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.destroy = output_destroy,
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//.make_current = wlr_wl_output_make_current,
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//.swap_buffers = wlr_wl_output_swap_buffers,
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};
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static EGLSurface egl_create_surface(struct wlr_egl *egl, unsigned int width,
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unsigned int height) {
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EGLint attribs[] = {EGL_WIDTH, width, EGL_HEIGHT, height, EGL_NONE};
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EGLSurface surf = eglCreatePbufferSurface(egl->display, egl->config, attribs);
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if (surf == EGL_NO_SURFACE) {
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wlr_log(L_ERROR, "Failed to create EGL surface: %s", egl_error());
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return EGL_NO_SURFACE;
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}
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return surf;
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}
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struct wlr_output *wlr_headless_add_output(struct wlr_backend *wlr_backend,
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unsigned int width, unsigned int height) {
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struct wlr_headless_backend *backend =
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(struct wlr_headless_backend *)wlr_backend;
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struct wlr_headless_backend_output *output =
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calloc(1, sizeof(struct wlr_headless_backend_output));
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if (output == NULL) {
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wlr_log(L_ERROR, "Failed to allocate wlr_headless_backend_output");
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return NULL;
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}
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wlr_output_init(&output->wlr_output, &backend->backend, &output_impl);
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struct wlr_output *wlr_output = &output->wlr_output;
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output->egl_surface = egl_create_surface(&backend->egl, width, height);
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wlr_output_update_size(wlr_output, width, height);
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if (!eglMakeCurrent(output->backend->egl.display,
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output->egl_surface, output->egl_surface,
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output->backend->egl.context)) {
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wlr_log(L_ERROR, "eglMakeCurrent failed: %s", egl_error());
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goto error;
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}
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glViewport(0, 0, wlr_output->width, wlr_output->height);
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glClearColor(1.0, 1.0, 1.0, 1.0);
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glClear(GL_COLOR_BUFFER_BIT);
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if (!eglSwapBuffers(output->backend->egl.display, output->egl_surface)) {
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wlr_log(L_ERROR, "eglSwapBuffers failed: %s", egl_error());
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goto error;
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}
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wl_list_insert(&backend->outputs, &output->link);
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wlr_output_create_global(wlr_output, backend->display);
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wl_signal_emit(&backend->backend.events.output_add, wlr_output);
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return wlr_output;
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error:
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wlr_output_destroy(&output->wlr_output);
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return NULL;
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}
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