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Allocate and set mode in egl-compositor.

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Pass the front buffer name to eglCreateSurfaceForName to create the
fullscreen EGLSurface.
This commit is contained in:
Kristian Høgsberg 2008-11-25 12:10:09 -05:00
parent f53f4bbd52
commit bf9541ffa3
1 changed files with 102 additions and 6 deletions
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108
egl-compositor.c
View file

@ -15,6 +15,7 @@
#include <png.h>
#include <math.h>
#include <linux/input.h>
#include <xf86drmMode.h>
#include "wayland.h"
#include "cairo-util.h"
@ -711,6 +712,98 @@ create_input_devices(struct wl_display *display)
wl_display_add_object(display, obj);
}
static uint32_t
create_frontbuffer(int fd, int *width, int *height, int *stride)
{
drmModeConnector *connector;
drmModeRes *resources;
drmModeEncoder *encoder;
struct drm_mode_modeinfo *mode;
struct drm_i915_gem_create create;
struct drm_i915_gem_pin pin;
struct drm_gem_flink flink;
unsigned int fb_id;
int i, ret;
resources = drmModeGetResources(fd);
if (!resources) {
fprintf(stderr, "drmModeGetResources failed\n");
return 0;
}
for (i = 0; i < resources->count_connectors; i++) {
connector = drmModeGetConnector(fd, resources->connectors[i]);
if (connector == NULL)
continue;
if (connector->connection == DRM_MODE_CONNECTED &&
connector->count_modes > 0)
break;
drmModeFreeConnector(connector);
}
if (i == resources->count_connectors) {
fprintf(stderr, "No currently active connector found.\n");
return -1;
}
mode = &connector->modes[0];
for (i = 0; i < resources->count_encoders; i++) {
encoder = drmModeGetEncoder(fd, resources->encoders[i]);
if (encoder == NULL)
continue;
if (encoder->encoder_id == connector->encoder_id)
break;
drmModeFreeEncoder(encoder);
}
/* Mode size at 32 bpp */
create.size = mode->hdisplay * mode->vdisplay * 4;
if (ioctl(fd, DRM_IOCTL_I915_GEM_CREATE, &create) != 0) {
fprintf(stderr, "gem create failed: %m\n");
return 0;
}
pin.handle = create.handle;
pin.alignment = 4096;
if (ioctl(fd, DRM_IOCTL_I915_GEM_PIN, &pin)) {
fprintf(stderr, "failed to pin buffer: %m\n");
return 0;
}
ret = drmModeAddFB(fd, mode->hdisplay, mode->vdisplay,
32, 32, mode->hdisplay * 4, create.handle, &fb_id);
if (ret) {
fprintf(stderr, "failed to add fb: %m\n");
return 0;
}
ret = drmModeSetCrtc(fd, encoder->crtc_id, fb_id, 0, 0,
&connector->connector_id, 1, mode);
if (ret) {
fprintf(stderr, "failed to set mode: %m\n");
return 0;
}
flink.handle = create.handle;
if (ioctl(fd, DRM_IOCTL_GEM_FLINK, &flink) != 0) {
fprintf(stderr, "gem flink failed: %m\n");
return 0;
}
*width = mode->hdisplay;
*height = mode->vdisplay;
*stride = mode->hdisplay * 4;
return flink.name;
}
static const char gem_device[] = "/dev/dri/card0";
WL_EXPORT struct wl_compositor *
@ -721,14 +814,15 @@ wl_compositor_create(struct wl_display *display)
struct egl_compositor *ec;
const char *filename;
struct screenshooter *shooter;
uint32_t fb_name;
int stride;
const static EGLint attribs[] =
{ EGL_RENDER_BUFFER, EGL_BACK_BUFFER, EGL_NONE };
ec = malloc(sizeof *ec);
if (ec == NULL)
return NULL;
ec->width = 1280;
ec->height = 800;
ec->base.interface = &interface;
ec->wl_display = display;
@ -747,10 +841,12 @@ wl_compositor_create(struct wl_display *display)
fprintf(stderr, "failed to get configs\n");
return NULL;
}
ec->config = configs[24];
ec->surface = eglCreateSurfaceNative(ec->display, ec->config,
0, 0, ec->width, ec->height);
fb_name = create_frontbuffer(eglGetDisplayFD(ec->display),
&ec->width, &ec->height, &stride);
ec->surface = eglCreateSurfaceForName(ec->display, ec->config,
fb_name, ec->width, ec->height, stride, attribs);
if (ec->surface == NULL) {
fprintf(stderr, "failed to create surface\n");
return NULL;