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gears: Use wayland egl surface instead of images

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dev
Benjamin Franzke 14 years ago
parent 6693ac2108
commit cff904e69d
3 changed files with 80 additions and 69 deletions
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  1. 88
      clients/gears.c
  2. 45
      clients/window.c
  3. 16
      clients/window.h

88
clients/gears.c
Unescape View File

@ -30,11 +30,8 @@
#include <unistd.h>
#include <math.h>
#include <time.h>
#include <cairo.h>
#include <glib.h>
#define GL_GLEXT_PROTOTYPES
#define EGL_EGLEXT_PROTOTYPES
#include <GL/gl.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
@ -51,14 +48,11 @@ struct gears {
struct display *d;
EGLDisplay display;
EGLDisplay config;
EGLContext context;
GLfloat angle;
cairo_surface_t *cairo_surface;
GLint gear_list[3];
GLuint fbo, color_rbo[2], depth_rbo;
cairo_surface_t *surface[2];
int current;
};
struct gear_template {
@ -202,56 +196,28 @@ make_gear(const struct gear_template *t)
glEnd();
}
static void
allocate_buffer(struct gears *gears)
{
EGLImageKHR image;
struct rectangle allocation;
window_draw(gears->window);
gears->surface[gears->current] = window_get_surface(gears->window);
#ifdef HAVE_CAIRO_EGL
image = display_get_image_for_egl_image_surface(gears->display,
gears->surface[gears->current]);
#else /* XXX: hack to make Wayland compile, even if this example doesn't run */
die("gears cannot allocate buffer: it was compiled without cairo-gl\n");
return;
#endif
if (!eglMakeCurrent(gears->display, NULL, NULL, gears->context))
die("faile to make context current\n");
glBindRenderbuffer(GL_RENDERBUFFER_EXT,
gears->color_rbo[gears->current]);
glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER, image);
glBindRenderbuffer(GL_RENDERBUFFER_EXT, gears->depth_rbo);
window_get_child_allocation(gears->window, &allocation);
glRenderbufferStorage(GL_RENDERBUFFER_EXT,
GL_DEPTH_COMPONENT,
allocation.width + 20 + 32,
allocation.height + 60 + 32);
}
static void
draw_gears(struct gears *gears)
{
GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0;
struct rectangle window_allocation;
struct rectangle allocation;
if (gears->surface[gears->current] == NULL)
allocate_buffer(gears);
glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT,
GL_RENDERBUFFER_EXT,
gears->color_rbo[gears->current]);
window_draw(gears->window);
window_get_child_allocation(gears->window, &allocation);
glViewport(allocation.x, allocation.y,
allocation.width, allocation.height);
glScissor(allocation.x, allocation.y,
window_get_allocation(gears->window, &window_allocation);
display_acquire_window_surface(gears->d,
gears->window,
gears->context);
glViewport(allocation.x,
window_allocation.height - allocation.height - allocation.x,
allocation.width, allocation.height);
glScissor(allocation.x,
window_allocation.height - allocation.height - allocation.y,
allocation.width, allocation.height);
glEnable(GL_SCISSOR_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
@ -286,7 +252,7 @@ draw_gears(struct gears *gears)
glFlush();
window_set_surface(gears->window, gears->surface[gears->current]);
display_release(gears->d);
window_flush(gears->window);
}
@ -296,11 +262,6 @@ resize_handler(struct window *window,
{
struct gears *gears = data;
cairo_surface_destroy(gears->surface[0]);
gears->surface[0] = NULL;
cairo_surface_destroy(gears->surface[1]);
gears->surface[1] = NULL;
/* Constrain child size to be square and at least 300x300 */
if (width > height)
height = width;
@ -338,8 +299,6 @@ frame_callback(void *data, uint32_t time)
{
struct gears *gears = data;
gears->current = 1 - gears->current;
gears->angle = (GLfloat) (time % 8192) * 360 / 8192.0;
window_schedule_redraw(gears->window);
@ -359,7 +318,6 @@ gears_create(struct display *display)
gears->d = display;
gears->window = window_create(display, width, height);
window_set_title(gears->window, "Wayland Gears");
window_set_buffer_type(gears->window, WINDOW_BUFFER_TYPE_EGL_IMAGE);
gears->display = display_get_egl_display(gears->d);
if (gears->display == NULL)
@ -367,24 +325,16 @@ gears_create(struct display *display)
eglBindAPI(EGL_OPENGL_API);
gears->context = eglCreateContext(gears->display,
NULL, EGL_NO_CONTEXT, NULL);
gears->config = display_get_egl_config(gears->d);
gears->context = eglCreateContext(gears->display, gears->config,
EGL_NO_CONTEXT, NULL);
if (gears->context == NULL)
die("failed to create context\n");
if (!eglMakeCurrent(gears->display, NULL, NULL, gears->context))
die("faile to make context current\n");
glGenFramebuffers(1, &gears->fbo);
glBindFramebuffer(GL_FRAMEBUFFER_EXT, gears->fbo);
glGenRenderbuffers(2, gears->color_rbo);
glGenRenderbuffers(1, &gears->depth_rbo);
glBindRenderbuffer(GL_RENDERBUFFER_EXT, gears->depth_rbo);
glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER_EXT,
GL_DEPTH_ATTACHMENT_EXT,
GL_RENDERBUFFER_EXT,
gears->depth_rbo);
for (i = 0; i < 3; i++) {
gears->gear_list[i] = glGenLists(1);
glNewList(gears->gear_list[i], GL_COMPILE);

45
clients/window.c
Unescape View File

@ -870,7 +870,10 @@ window_draw_decorations(struct window *window)
cairo_destroy(cr);
/* FIXME: this breakes gears, fix cairo? */
#if 0
cairo_device_flush (window->display->device);
#endif
}
void
@ -1260,6 +1263,13 @@ static const struct wl_shell_listener shell_listener = {
handle_configure,
};
void
window_get_allocation(struct window *window,
struct rectangle *allocation)
{
*allocation = window->allocation;
}
void
window_get_child_allocation(struct window *window,
struct rectangle *allocation)
@ -1850,12 +1860,47 @@ display_get_egl_display(struct display *d)
return d->dpy;
}
EGLConfig
display_get_egl_config(struct display *d)
{
return d->conf;
}
struct wl_shell *
display_get_shell(struct display *display)
{
return display->shell;
}
void
display_acquire_window_surface(struct display *display,
struct window *window,
EGLContext ctx)
{
struct egl_window_surface_data *data;
if (!window->cairo_surface)
return;
if (!ctx)
ctx = display->ctx;
data = cairo_surface_get_user_data(window->cairo_surface,
&surface_data_key);
cairo_device_acquire(display->device);
if (!eglMakeCurrent(display->dpy, data->surf, data->surf, ctx))
fprintf(stderr, "failed to make surface current\n");
}
void
display_release(struct display *display)
{
if (!eglMakeCurrent(display->dpy, NULL, NULL, display->ctx))
fprintf(stderr, "failed to make context current\n");
cairo_device_release(display->device);
}
void
display_run(struct display *d)
{

16
clients/window.h
Unescape View File

@ -26,6 +26,7 @@
#include <X11/extensions/XKBcommon.h>
#include <glib.h>
#include <wayland-client.h>
#include <cairo.h>
struct window;
@ -55,6 +56,16 @@ display_get_shell(struct display *display);
EGLDisplay
display_get_egl_display(struct display *d);
EGLConfig
display_get_egl_config(struct display *d);
void
display_acquire_window_surface(struct display *display,
struct window *window,
EGLContext ctx);
void
display_release(struct display *display);
#ifdef HAVE_CAIRO_EGL
EGLImageKHR
display_get_image_for_egl_image_surface(struct display *display,
@ -142,6 +153,11 @@ window_move(struct window *window, struct input *input, uint32_t time);
void
window_draw(struct window *window);
void
window_get_allocation(struct window *window,
struct rectangle *allocation);
void
window_get_child_allocation(struct window *window,
struct rectangle *allocation);

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