From 2b43bd73a0f0f3e81cd4a8943fd10c21e00727a2 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Kristian=20H=C3=B8gsberg?= Date: Mon, 8 Nov 2010 15:45:55 -0500 Subject: [PATCH] Bring gears example up to date Must have gears. --- clients/gears.c | 158 ++++++++++++++++++++++++++----------------------------- clients/window.c | 22 +++++--- clients/window.h | 4 ++ 3 files changed, 94 insertions(+), 90 deletions(-) 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 @@ struct gears { 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 @@ make_gear(const struct gear_template *t) } 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 @@ draw_gears(struct gears *gears) 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 @@ resize_handler(struct window *window, void *data) { 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 @@ -313,23 +312,27 @@ keyboard_focus_handler(struct window *window, { struct gears *gears = data; - gears->resized = 1; + resize_handler(window, gears); } static void -frame_callback(void *data, uint32_t time) +redraw_handler(struct window *window, void *data) { struct gears *gears = data; - window_copy_image(gears->window, &gears->rectangle, gears->image); + draw_gears(gears); +} - if (gears->resized) - resize_window(gears); +static void +frame_callback(void *data, uint32_t time) +{ + struct gears *gears = data; - 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 @@ gears_create(struct display *display) 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 @@ gears_create(struct display *display) 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 @@ gears_create(struct display *display) 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); diff --git a/clients/window.c b/clients/window.c index 45bee61..9dfd355 100644 --- a/clients/window.c +++ b/clients/window.c @@ -184,6 +184,17 @@ drm_surface_data_destroy(void *p) wl_buffer_destroy(data->data.buffer); } +EGLImageKHR +display_get_image_for_drm_surface(struct display *display, + cairo_surface_t *surface) +{ + struct drm_surface_data *data; + + data = cairo_surface_get_user_data (surface, &surface_data_key); + + return data->image; +} + cairo_surface_t * display_create_drm_surface(struct display *display, struct rectangle *rectangle) @@ -272,8 +283,8 @@ display_create_drm_surface_from_file(struct display *display, while (p < end) { unsigned int t; -#define MULT(d,c,a,t) \ - do { t = c * a + 0x7f; d = ((t >> 8) + t) >> 8; } while (0) +#define MULT(_d,c,a,t) \ + do { t = c * a + 0x7f; _d = ((t >> 8) + t) >> 8; } while (0) MULT(p[0], p[0], p[3], t); MULT(p[1], p[1], p[3], t); @@ -424,9 +435,6 @@ display_create_shm_surface_from_file(struct display *display, unsigned int t; unsigned char a, r, g, b; -#define MULT(_d,c,a,t) \ - do { t = c * a + 0x7f; _d = ((t >> 8) + t) >> 8; } while (0) - a = p[3]; MULT(r, p[0], a, t); MULT(g, p[1], a, t); @@ -569,10 +577,12 @@ window_flush(struct window *window) void window_set_surface(struct window *window, cairo_surface_t *surface) { + cairo_surface_reference(surface); + if (window->cairo_surface != NULL) cairo_surface_destroy(window->cairo_surface); - window->cairo_surface = cairo_surface_reference(surface); + window->cairo_surface = surface; } void diff --git a/clients/window.h b/clients/window.h index d7a632e..871e46b 100644 --- a/clients/window.h +++ b/clients/window.h @@ -47,6 +47,10 @@ display_get_compositor(struct display *display); #ifdef EGL_NO_DISPLAY EGLDisplay display_get_egl_display(struct display *d); + +EGLImageKHR +display_get_image_for_drm_surface(struct display *display, + cairo_surface_t *surface); #endif cairo_surface_t * -- 2.7.4