gears: Use wayland egl surface instead of images
This commit is contained in:
Benjamin Franzke
parent
6693ac2108
commit
cff904e69d
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@ -30,11 +30,8 @@
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#include <unistd.h>
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#include <math.h>
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#include <time.h>
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#include <cairo.h>
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#include <glib.h>
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#define GL_GLEXT_PROTOTYPES
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#define EGL_EGLEXT_PROTOTYPES
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#include <GL/gl.h>
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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@ -51,14 +48,11 @@ struct gears {
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struct display *d;
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EGLDisplay display;
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EGLDisplay config;
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EGLContext context;
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GLfloat angle;
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cairo_surface_t *cairo_surface;
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GLint gear_list[3];
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GLuint fbo, color_rbo[2], depth_rbo;
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cairo_surface_t *surface[2];
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int current;
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};
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struct gear_template {
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@ -203,54 +197,26 @@ make_gear(const struct gear_template *t)
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}
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static void
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allocate_buffer(struct gears *gears)
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draw_gears(struct gears *gears)
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{
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EGLImageKHR image;
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GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0;
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struct rectangle window_allocation;
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struct rectangle allocation;
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window_draw(gears->window);
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gears->surface[gears->current] = window_get_surface(gears->window);
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#ifdef HAVE_CAIRO_EGL
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image = display_get_image_for_egl_image_surface(gears->display,
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gears->surface[gears->current]);
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#else /* XXX: hack to make Wayland compile, even if this example doesn't run */
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die("gears cannot allocate buffer: it was compiled without cairo-gl\n");
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return;
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#endif
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if (!eglMakeCurrent(gears->display, NULL, NULL, gears->context))
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die("faile to make context current\n");
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glBindRenderbuffer(GL_RENDERBUFFER_EXT,
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gears->color_rbo[gears->current]);
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glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER, image);
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glBindRenderbuffer(GL_RENDERBUFFER_EXT, gears->depth_rbo);
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window_get_child_allocation(gears->window, &allocation);
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glRenderbufferStorage(GL_RENDERBUFFER_EXT,
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GL_DEPTH_COMPONENT,
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allocation.width + 20 + 32,
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allocation.height + 60 + 32);
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}
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window_get_allocation(gears->window, &window_allocation);
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static void
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draw_gears(struct gears *gears)
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{
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GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0;
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struct rectangle allocation;
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display_acquire_window_surface(gears->d,
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gears->window,
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gears->context);
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if (gears->surface[gears->current] == NULL)
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allocate_buffer(gears);
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glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER_EXT,
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GL_COLOR_ATTACHMENT0_EXT,
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GL_RENDERBUFFER_EXT,
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gears->color_rbo[gears->current]);
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window_get_child_allocation(gears->window, &allocation);
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glViewport(allocation.x, allocation.y,
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glViewport(allocation.x,
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window_allocation.height - allocation.height - allocation.x,
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allocation.width, allocation.height);
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glScissor(allocation.x, allocation.y,
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glScissor(allocation.x,
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window_allocation.height - allocation.height - allocation.y,
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allocation.width, allocation.height);
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glEnable(GL_SCISSOR_TEST);
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@ -286,7 +252,7 @@ draw_gears(struct gears *gears)
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glFlush();
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window_set_surface(gears->window, gears->surface[gears->current]);
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display_release(gears->d);
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window_flush(gears->window);
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}
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@ -296,11 +262,6 @@ resize_handler(struct window *window,
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{
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struct gears *gears = data;
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cairo_surface_destroy(gears->surface[0]);
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gears->surface[0] = NULL;
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cairo_surface_destroy(gears->surface[1]);
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gears->surface[1] = NULL;
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/* Constrain child size to be square and at least 300x300 */
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if (width > height)
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height = width;
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@ -338,8 +299,6 @@ frame_callback(void *data, uint32_t time)
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{
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struct gears *gears = data;
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gears->current = 1 - gears->current;
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gears->angle = (GLfloat) (time % 8192) * 360 / 8192.0;
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window_schedule_redraw(gears->window);
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@ -359,7 +318,6 @@ gears_create(struct display *display)
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gears->d = display;
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gears->window = window_create(display, width, height);
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window_set_title(gears->window, "Wayland Gears");
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window_set_buffer_type(gears->window, WINDOW_BUFFER_TYPE_EGL_IMAGE);
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gears->display = display_get_egl_display(gears->d);
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if (gears->display == NULL)
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@ -367,24 +325,16 @@ gears_create(struct display *display)
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eglBindAPI(EGL_OPENGL_API);
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gears->context = eglCreateContext(gears->display,
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NULL, EGL_NO_CONTEXT, NULL);
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gears->config = display_get_egl_config(gears->d);
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gears->context = eglCreateContext(gears->display, gears->config,
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EGL_NO_CONTEXT, NULL);
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if (gears->context == NULL)
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die("failed to create context\n");
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if (!eglMakeCurrent(gears->display, NULL, NULL, gears->context))
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die("faile to make context current\n");
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glGenFramebuffers(1, &gears->fbo);
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glBindFramebuffer(GL_FRAMEBUFFER_EXT, gears->fbo);
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glGenRenderbuffers(2, gears->color_rbo);
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glGenRenderbuffers(1, &gears->depth_rbo);
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glBindRenderbuffer(GL_RENDERBUFFER_EXT, gears->depth_rbo);
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glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER_EXT,
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GL_DEPTH_ATTACHMENT_EXT,
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GL_RENDERBUFFER_EXT,
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gears->depth_rbo);
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for (i = 0; i < 3; i++) {
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gears->gear_list[i] = glGenLists(1);
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glNewList(gears->gear_list[i], GL_COMPILE);
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@ -870,7 +870,10 @@ window_draw_decorations(struct window *window)
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cairo_destroy(cr);
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/* FIXME: this breakes gears, fix cairo? */
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#if 0
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cairo_device_flush (window->display->device);
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#endif
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}
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void
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@ -1260,6 +1263,13 @@ static const struct wl_shell_listener shell_listener = {
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handle_configure,
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};
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void
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window_get_allocation(struct window *window,
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struct rectangle *allocation)
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{
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*allocation = window->allocation;
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}
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void
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window_get_child_allocation(struct window *window,
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struct rectangle *allocation)
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@ -1850,12 +1860,47 @@ display_get_egl_display(struct display *d)
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return d->dpy;
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}
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EGLConfig
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display_get_egl_config(struct display *d)
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{
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return d->conf;
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}
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struct wl_shell *
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display_get_shell(struct display *display)
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{
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return display->shell;
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}
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void
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display_acquire_window_surface(struct display *display,
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struct window *window,
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EGLContext ctx)
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{
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struct egl_window_surface_data *data;
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if (!window->cairo_surface)
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return;
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if (!ctx)
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ctx = display->ctx;
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data = cairo_surface_get_user_data(window->cairo_surface,
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&surface_data_key);
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cairo_device_acquire(display->device);
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if (!eglMakeCurrent(display->dpy, data->surf, data->surf, ctx))
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fprintf(stderr, "failed to make surface current\n");
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}
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void
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display_release(struct display *display)
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{
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if (!eglMakeCurrent(display->dpy, NULL, NULL, display->ctx))
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fprintf(stderr, "failed to make context current\n");
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cairo_device_release(display->device);
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}
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void
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display_run(struct display *d)
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{
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@ -26,6 +26,7 @@
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#include <X11/extensions/XKBcommon.h>
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#include <glib.h>
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#include <wayland-client.h>
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#include <cairo.h>
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struct window;
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@ -55,6 +56,16 @@ display_get_shell(struct display *display);
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EGLDisplay
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display_get_egl_display(struct display *d);
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EGLConfig
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display_get_egl_config(struct display *d);
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void
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display_acquire_window_surface(struct display *display,
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struct window *window,
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EGLContext ctx);
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void
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display_release(struct display *display);
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#ifdef HAVE_CAIRO_EGL
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EGLImageKHR
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display_get_image_for_egl_image_surface(struct display *display,
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@ -142,6 +153,11 @@ window_move(struct window *window, struct input *input, uint32_t time);
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void
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window_draw(struct window *window);
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void
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window_get_allocation(struct window *window,
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struct rectangle *allocation);
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void
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window_get_child_allocation(struct window *window,
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struct rectangle *allocation);
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