Bring gears example up to date
Must have gears.
diff --git a/clients/gears.c b/clients/gears.c
index f8c77ec..8669683 100644
--- a/clients/gears.c
+++ b/clients/gears.c
@@ -43,9 +43,6 @@
#include "window.h"
-static const char gem_device[] = "/dev/dri/card0";
-static const char socket_name[] = "\0wayland";
-
struct gears {
struct window *window;
@@ -54,14 +51,14 @@
EGLDisplay display;
EGLContext context;
- EGLImageKHR image;
int drm_fd;
- int resized;
GLfloat angle;
cairo_surface_t *cairo_surface;
GLint gear_list[3];
- GLuint fbo, color_rbo, depth_rbo;
+ GLuint fbo, color_rbo[2], depth_rbo;
+ cairo_surface_t *surface[2];
+ int current;
};
struct gear_template {
@@ -206,10 +203,62 @@
}
static void
+allocate_buffer(struct gears *gears)
+{
+ EGLImageKHR image;
+
+ /* Constrain child size to be square and at least 300x300 */
+ window_get_child_rectangle(gears->window, &gears->rectangle);
+ if (gears->rectangle.width > gears->rectangle.height)
+ gears->rectangle.height = gears->rectangle.width;
+ else
+ gears->rectangle.width = gears->rectangle.height;
+ if (gears->rectangle.width < 300) {
+ gears->rectangle.width = 300;
+ gears->rectangle.height = 300;
+ }
+
+ window_set_child_size(gears->window, &gears->rectangle);
+ window_draw(gears->window);
+
+ gears->surface[gears->current] = window_get_surface(gears->window);
+
+ image = display_get_image_for_drm_surface(gears->display,
+ gears->surface[gears->current]);
+
+ 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);
+ glRenderbufferStorage(GL_RENDERBUFFER_EXT,
+ GL_DEPTH_COMPONENT,
+ gears->rectangle.width + 20 + 32,
+ gears->rectangle.height + 60 + 32);
+}
+
+static void
draw_gears(struct gears *gears)
{
GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0;
+ 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]);
+
+ glViewport(gears->rectangle.x, gears->rectangle.y,
+ gears->rectangle.width, gears->rectangle.height);
+ glScissor(gears->rectangle.x, gears->rectangle.y,
+ gears->rectangle.width, gears->rectangle.height);
+
+ glEnable(GL_SCISSOR_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
@@ -241,52 +290,9 @@
glPopMatrix();
glFlush();
-}
-static void
-resize_window(struct gears *gears)
-{
- EGLint attribs[] = {
- EGL_WIDTH, 0,
- EGL_HEIGHT, 0,
- EGL_DRM_BUFFER_FORMAT_MESA, EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
- EGL_DRM_BUFFER_USE_MESA, EGL_DRM_BUFFER_USE_SHARE_MESA |
- EGL_DRM_BUFFER_USE_SCANOUT_MESA,
- EGL_NONE
- };
-
- /* Constrain child size to be square and at least 300x300 */
- window_get_child_rectangle(gears->window, &gears->rectangle);
- if (gears->rectangle.width > gears->rectangle.height)
- gears->rectangle.height = gears->rectangle.width;
- else
- gears->rectangle.width = gears->rectangle.height;
- if (gears->rectangle.width < 300) {
- gears->rectangle.width = 300;
- gears->rectangle.height = 300;
- }
- window_set_child_size(gears->window, &gears->rectangle);
-
- window_draw(gears->window);
-
- if (gears->image)
- eglDestroyImageKHR(gears->display, gears->image);
- attribs[1] = gears->rectangle.width;
- attribs[3] = gears->rectangle.height;
- gears->image = eglCreateDRMImageMESA(gears->display, attribs);
-
- glBindRenderbuffer(GL_RENDERBUFFER_EXT, gears->color_rbo);
- glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER, gears->image);
-
- glBindRenderbuffer(GL_RENDERBUFFER_EXT, gears->depth_rbo);
- glRenderbufferStorage(GL_RENDERBUFFER_EXT,
- GL_DEPTH_COMPONENT,
- gears->rectangle.width,
- gears->rectangle.height);
-
- glViewport(0, 0, gears->rectangle.width, gears->rectangle.height);
-
- gears->resized = 0;
+ window_set_surface(gears->window, gears->surface[gears->current]);
+ window_flush(gears->window);
}
static void
@@ -294,17 +300,10 @@
{
struct gears *gears = data;
- /* Right now, resizing the window from the per-frame callback
- * is fine, since the window drawing code is so slow that we
- * can't draw more than one window per frame anyway. However,
- * once we implement faster resizing, this will show lag
- * between pointer motion and window size even if resizing is
- * fast. We need to keep processing motion events and posting
- * new frames as fast as possible so when the server
- * composites the next frame it will have the most recent size
- * possible, like what we do for window moves. */
-
- gears->resized = 1;
+ cairo_surface_destroy(gears->surface[0]);
+ gears->surface[0] = NULL;
+ cairo_surface_destroy(gears->surface[1]);
+ gears->surface[1] = NULL;
}
static void
@@ -313,7 +312,15 @@
{
struct gears *gears = data;
- gears->resized = 1;
+ resize_handler(window, gears);
+}
+
+static void
+redraw_handler(struct window *window, void *data)
+{
+ struct gears *gears = data;
+
+ draw_gears(gears);
}
static void
@@ -321,15 +328,11 @@
{
struct gears *gears = data;
- window_copy_image(gears->window, &gears->rectangle, gears->image);
-
- if (gears->resized)
- resize_window(gears);
-
- draw_gears(gears);
+ gears->current = 1 - gears->current;
gears->angle = (GLfloat) (time % 8192) * 360 / 8192.0;
+ window_schedule_redraw(gears->window);
wl_display_frame_callback(display_get_display(gears->d),
frame_callback, gears);
}
@@ -352,9 +355,6 @@
if (gears->display == NULL)
die("failed to create egl display\n");
- if (!eglInitialize(gears->display, &major, &minor))
- die("failed to initialize display\n");
-
eglBindAPI(EGL_OPENGL_API);
gears->context = eglCreateContext(gears->display,
@@ -368,13 +368,7 @@
glGenFramebuffers(1, &gears->fbo);
glBindFramebuffer(GL_FRAMEBUFFER_EXT, gears->fbo);
- glGenRenderbuffers(1, &gears->color_rbo);
- glBindRenderbuffer(GL_RENDERBUFFER_EXT, gears->color_rbo);
- glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER_EXT,
- GL_COLOR_ATTACHMENT0_EXT,
- GL_RENDERBUFFER_EXT,
- gears->color_rbo);
-
+ glGenRenderbuffers(2, gears->color_rbo);
glGenRenderbuffers(1, &gears->depth_rbo);
glBindRenderbuffer(GL_RENDERBUFFER_EXT, gears->depth_rbo);
glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER_EXT,
@@ -402,16 +396,12 @@
glEnable(GL_DEPTH_TEST);
glClearColor(0, 0, 0, 0.92);
- if (glCheckFramebufferStatus (GL_FRAMEBUFFER_EXT) != GL_FRAMEBUFFER_COMPLETE)
- fprintf(stderr, "framebuffer incomplete\n");
-
- resize_window(gears);
- draw_gears(gears);
-
window_set_user_data(gears->window, gears);
window_set_resize_handler(gears->window, resize_handler);
window_set_keyboard_focus_handler(gears->window, keyboard_focus_handler);
+ window_set_redraw_handler(gears->window, redraw_handler);
+ draw_gears(gears);
wl_display_frame_callback(display_get_display(gears->d),
frame_callback, gears);