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Bring gears example up to date

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Must have gears.
This commit is contained in:
Kristian Høgsberg 2010-11-08 15:45:55 -05:00
parent 990854d019
commit 2b43bd73a0
3 changed files with 95 additions and 91 deletions
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160
clients/gears.c
View file

@ -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 {
@ -205,11 +202,63 @@ make_gear(const struct gear_template *t)
glEnd();
}
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
@ -313,7 +312,15 @@ keyboard_focus_handler(struct window *window,
{
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 @@ frame_callback(void *data, uint32_t time)
{
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 @@ 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);