diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/layer-shell.c | 36 |
1 files changed, 29 insertions, 7 deletions
diff --git a/examples/layer-shell.c b/examples/layer-shell.c index b5542f7a..91c509f6 100644 --- a/examples/layer-shell.c +++ b/examples/layer-shell.c @@ -1,8 +1,9 @@ -#define _POSIX_C_SOURCE 2 +#define _POSIX_C_SOURCE 199309L #include <GLES2/gl2.h> #include <stdio.h> #include <stdlib.h> #include <string.h> +#include <time.h> #include <unistd.h> #include <wayland-client.h> #include <wayland-egl.h> @@ -25,6 +26,12 @@ static uint32_t layer = ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND; static uint32_t anchor = 0; static int32_t width = 256, height = 256; +static struct { + struct timespec last_frame; + float color[3]; + int dec; +} demo; + static void draw(void); static void surface_frame_callback( @@ -40,17 +47,33 @@ static struct wl_callback_listener frame_listener = { static void draw(void) { eglMakeCurrent(egl.display, egl_surface, egl_surface, egl.context); - wlr_log(L_DEBUG, "Drawing frame"); - float color[] = {1.0, 0.0, 0.0, 1.0}; + struct timespec ts; + clock_gettime(CLOCK_MONOTONIC, &ts); + + long ms = (ts.tv_sec - demo.last_frame.tv_sec) * 1000 + + (ts.tv_nsec - demo.last_frame.tv_nsec) / 1000000; + int inc = (demo.dec + 1) % 3; + + demo.color[inc] += ms / 2000.0f; + demo.color[demo.dec] -= ms / 2000.0f; + + if (demo.color[demo.dec] < 0.0f) { + demo.color[inc] = 1.0f; + demo.color[demo.dec] = 0.0f; + demo.dec = inc; + } + glViewport(0, 0, width, height); - glClearColor(color[0], color[1], color[2], 1.0); + glClearColor(demo.color[0], demo.color[1], demo.color[2], 1.0); glClear(GL_COLOR_BUFFER_BIT); - eglSwapBuffers(egl.display, egl_surface); - frame_callback = wl_surface_frame(wl_surface); wl_callback_add_listener(frame_callback, &frame_listener, NULL); + + eglSwapBuffers(egl.display, egl_surface); + + demo.last_frame = ts; } static void layer_surface_configure(void *data, @@ -196,7 +219,6 @@ int main(int argc, char **argv) { &layer_surface_listener, layer_surface); // TODO: margin, interactivity, exclusive zone wl_surface_commit(wl_surface); - wl_display_dispatch(display); wl_display_roundtrip(display); wlr_egl_init(&egl, EGL_PLATFORM_WAYLAND_EXT, display, NULL, |