Scott Anderson
8 years ago
parent
e9d716fc0c
commit
e446a5300b
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#.rst:
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# FindGBM
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# -------
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#
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# Find GBM library
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#
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# Try to find GBM library on UNIX systems. The following values are defined
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#
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# ::
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#
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# GBM_FOUND - True if gbm is available
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# GBM_INCLUDE_DIRS - Include directories for gbm
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# GBM_LIBRARIES - List of libraries for gbm
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# GBM_DEFINITIONS - List of definitions for gbm
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#
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#=============================================================================
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# Copyright (c) 2015 Jari Vetoniemi
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#
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# Distributed under the OSI-approved BSD License (the "License");
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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set_package_properties(GBM PROPERTIES
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URL "http://www.mesa3d.org/"
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DESCRIPTION "Generic buffer manager")
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find_package(PkgConfig)
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pkg_check_modules(PC_GBM QUIET gbm)
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find_library(GBM_LIBRARIES NAMES gbm HINTS ${PC_GBM_LIBRARY_DIRS})
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find_path(GBM_INCLUDE_DIRS gbm.h HINTS ${PC_GBM_INCLUDE_DIRS})
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set(GBM_DEFINITIONS ${PC_GBM_CFLAGS_OTHER})
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(GBM DEFAULT_MSG GBM_INCLUDE_DIRS GBM_LIBRARIES)
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mark_as_advanced(GBM_INCLUDE_DIRS GBM_LIBRARIES GBM_DEFINITIONS)
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@ -0,0 +1,109 @@
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#define _POSIX_C_SOURCE 199309L
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <wayland-server.h>
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#include <GLES3/gl3.h>
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#include <wlr/backend/drm.h>
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struct state {
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float color[3];
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int dec;
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struct timespec last_frame;
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struct wl_listener add;
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struct wl_listener rem;
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struct wl_listener render;
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};
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void display_add(struct wl_listener *listener, void *data)
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{
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struct wlr_drm_display *disp = data;
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fprintf(stderr, "Display added\n");
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wlr_drm_display_modeset(disp, "preferred");
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}
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void display_rem(struct wl_listener *listener, void *data)
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{
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fprintf(stderr, "Display removed\n");
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}
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void display_render(struct wl_listener *listener, void *data)
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{
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struct wlr_drm_display *disp = data;
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struct state *s = wl_container_of(listener, s, render);
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struct timespec now;
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clock_gettime(CLOCK_MONOTONIC, &now);
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long ms = (now.tv_sec - s->last_frame.tv_sec) * 1000 +
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(now.tv_nsec - s->last_frame.tv_nsec) / 1000000;
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int inc = (s->dec + 1) % 3;
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s->color[inc] += ms / 2000.0f;
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s->color[s->dec] -= ms / 2000.0f;
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if (s->color[s->dec] < 0.0f) {
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s->color[inc] = 1.0f;
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s->color[s->dec] = 0.0f;
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s->dec = inc;
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}
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s->last_frame = now;
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wlr_drm_display_begin(disp);
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glClearColor(s->color[0], s->color[1], s->color[2], 1.0);
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glClear(GL_COLOR_BUFFER_BIT);
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wlr_drm_display_end(disp);
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}
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int timer_done(void *data)
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{
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*(bool *)data = true;
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return 1;
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}
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int main()
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{
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if (getenv("DISPLAY")) {
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fprintf(stderr, "Detected that X is running. Run this in its own virtual terminal.\n");
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return 1;
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} else if (getenv("WAYLAND_DISPLAY")) {
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fprintf(stderr, "Detected that Wayland is running. Run this in its own virtual terminal.\n");
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return 1;
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}
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struct state state = {
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.color = { 1.0, 0.0, 0.0 },
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.dec = 0,
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.add = { .notify = display_add },
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.rem = { .notify = display_rem },
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.render = { .notify = display_render },
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};
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wl_list_init(&state.add.link);
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wl_list_init(&state.rem.link);
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wl_list_init(&state.render.link);
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clock_gettime(CLOCK_MONOTONIC, &state.last_frame);
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struct wlr_drm_backend *wlr = wlr_drm_backend_init(&state.add, &state.rem, &state.render);
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bool done = false;
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struct wl_event_loop *event_loop = wlr_drm_backend_get_event_loop(wlr);
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struct wl_event_source *timer = wl_event_loop_add_timer(event_loop,
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timer_done, &done);
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wl_event_source_timer_update(timer, 10000);
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while (!done)
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wl_event_loop_dispatch(event_loop, 0);
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wl_event_source_remove(timer);
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wlr_drm_backend_free(wlr);
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}
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@ -0,0 +1,20 @@
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#ifndef WLR_BACKEND_DRM_H
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#define WLR_BACKEND_DRM_H
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#include <wayland-server.h>
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struct wlr_drm_backend;
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struct wlr_drm_display;
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struct wlr_drm_backend *wlr_drm_backend_init(struct wl_listener *add,
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struct wl_listener *rem,
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struct wl_listener *render);
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void wlr_drm_backend_free(struct wlr_drm_backend *backend);
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struct wl_event_loop *wlr_drm_backend_get_event_loop(struct wlr_drm_backend *backend);
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bool wlr_drm_display_modeset(struct wlr_drm_display *disp, const char *str);
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void wlr_drm_display_begin(struct wlr_drm_display *disp);
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void wlr_drm_display_end(struct wlr_drm_display *disp);
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#endif
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