static gboolean
_cogl_winsys_onscreen_init (CoglOnscreen *onscreen,
GError **error)
{
CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
CoglContext *context = framebuffer->context;
CoglDisplay *display = context->display;
CoglDisplayEGL *egl_display = display->winsys;
CoglDisplayKMS *kms_display = egl_display->platform;
CoglRenderer *renderer = display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
CoglOnscreenEGL *egl_onscreen;
CoglOnscreenKMS *kms_onscreen;
int i;
_COGL_RETURN_VAL_IF_FAIL (egl_display->egl_context, FALSE);
onscreen->winsys = g_slice_new0 (CoglOnscreenEGL);
egl_onscreen = onscreen->winsys;
kms_onscreen = g_slice_new0 (CoglOnscreenKMS);
egl_onscreen->platform = kms_onscreen;
context->glGenRenderbuffers (2, kms_onscreen->color_rb);
for (i = 0; i < 2; i++)
{
uint32_t handle, stride;
kms_onscreen->bo[i] =
gbm_bo_create (kms_renderer->gbm,
kms_display->mode.hdisplay, kms_display->mode.vdisplay,
GBM_BO_FORMAT_XRGB8888,
GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
if (!kms_onscreen->bo[i])
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"Failed to allocate buffer");
return FALSE;
}
kms_onscreen->image[i] =
_cogl_egl_create_image (context,
EGL_NATIVE_PIXMAP_KHR,
kms_onscreen->bo[i],
NULL);
if (kms_onscreen->image[i] == EGL_NO_IMAGE_KHR)
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"Failed to create EGL image");
return FALSE;
}
context->glBindRenderbuffer (GL_RENDERBUFFER_EXT,
kms_onscreen->color_rb[i]);
context->glEGLImageTargetRenderbufferStorage (GL_RENDERBUFFER,
kms_onscreen->image[i]);
context->glBindRenderbuffer (GL_RENDERBUFFER_EXT, 0);
handle = gbm_bo_get_handle (kms_onscreen->bo[i]).u32;
stride = gbm_bo_get_pitch (kms_onscreen->bo[i]);
if (drmModeAddFB (kms_renderer->fd,
kms_display->mode.hdisplay,
kms_display->mode.vdisplay,
24, 32,
stride,
handle,
&kms_onscreen->fb_id[i]) != 0)
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"Failed to create framebuffer from buffer");
return FALSE;
}
}
context->glGenFramebuffers (1, &kms_onscreen->fb);
context->glBindFramebuffer (GL_FRAMEBUFFER_EXT, kms_onscreen->fb);
context->glGenRenderbuffers (1, &kms_onscreen->depth_rb);
context->glBindRenderbuffer (GL_RENDERBUFFER_EXT, kms_onscreen->depth_rb);
context->glRenderbufferStorage (GL_RENDERBUFFER_EXT,
GL_DEPTH_COMPONENT16,
kms_display->mode.hdisplay,
kms_display->mode.vdisplay);
context->glBindRenderbuffer (GL_RENDERBUFFER_EXT, 0);
context->glFramebufferRenderbuffer (GL_FRAMEBUFFER_EXT,
GL_DEPTH_ATTACHMENT_EXT,
GL_RENDERBUFFER_EXT,
kms_onscreen->depth_rb);
kms_onscreen->current_frame = 0;
_cogl_winsys_onscreen_swap_buffers (onscreen);
_cogl_framebuffer_winsys_update_size (framebuffer,
kms_display->width,
kms_display->height);
return TRUE;
}
static void
_cogl_winsys_onscreen_swap_buffers (CoglOnscreen *onscreen)
{
CoglContext *context = COGL_FRAMEBUFFER (onscreen)->context;
CoglDisplayEGL *egl_display = context->display->winsys;
CoglDisplayKMS *kms_display = egl_display->platform;
CoglRenderer *renderer = context->display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
CoglOnscreenKMS *kms_onscreen = egl_onscreen->platform;
uint32_t handle, stride;
CoglFlipKMS *flip;
GList *l;
/* If we already have a pending swap then block until it completes */
while (kms_onscreen->next_fb_id != 0)
handle_drm_event (kms_renderer);
/* First chain-up. This will call eglSwapBuffers */
parent_vtable->onscreen_swap_buffers (onscreen);
/* Now we need to set the CRTC to whatever is the front buffer */
kms_onscreen->next_bo = gbm_surface_lock_front_buffer (kms_onscreen->surface);
#if (COGL_VERSION_ENCODE (COGL_GBM_MAJOR, COGL_GBM_MINOR, COGL_GBM_MICRO) >= \
COGL_VERSION_ENCODE (8, 1, 0))
stride = gbm_bo_get_stride (kms_onscreen->next_bo);
#else
stride = gbm_bo_get_pitch (kms_onscreen->next_bo);
#endif
handle = gbm_bo_get_handle (kms_onscreen->next_bo).u32;
if (drmModeAddFB (kms_renderer->fd,
kms_display->width,
kms_display->height,
24, /* depth */
32, /* bpp */
stride,
handle,
&kms_onscreen->next_fb_id))
{
g_warning ("Failed to create new back buffer handle: %m");
gbm_surface_release_buffer (kms_onscreen->surface,
kms_onscreen->next_bo);
kms_onscreen->next_bo = NULL;
kms_onscreen->next_fb_id = 0;
return;
}
/* If this is the first framebuffer to be presented then we now setup the
* crtc modes... */
if (kms_display->pending_set_crtc)
{
setup_crtc_modes (context->display, kms_onscreen->next_fb_id);
kms_display->pending_set_crtc = FALSE;
}
flip = g_slice_new0 (CoglFlipKMS);
flip->onscreen = onscreen;
for (l = kms_display->outputs; l; l = l->next)
{
CoglOutputKMS *output = l->data;
if (drmModePageFlip (kms_renderer->fd,
output->encoder->crtc_id,
kms_onscreen->next_fb_id,
DRM_MODE_PAGE_FLIP_EVENT,
flip))
{
g_warning ("Failed to flip: %m");
continue;
}
flip->pending++;
}
if (flip->pending == 0)
{
drmModeRmFB (kms_renderer->fd, kms_onscreen->next_fb_id);
gbm_surface_release_buffer (kms_onscreen->surface,
kms_onscreen->next_bo);
kms_onscreen->next_bo = NULL;
kms_onscreen->next_fb_id = 0;
g_slice_free (CoglFlipKMS, flip);
flip = NULL;
}
else
{
/* Ensure the onscreen remains valid while it has any pending flips... */
cogl_object_ref (flip->onscreen);
}
}
void QKmsBufferManager::setupBuffersForMode(const drmModeModeInfo &mode, int numBuffers)
{
eglMakeCurrent(m_screen->device()->eglDisplay(), EGL_NO_SURFACE, EGL_NO_SURFACE, m_screen->device()->eglContext());
m_screen->bindFramebuffer();
if (m_frameBufferObject) {
clearBuffers();
} else {
//Setup Framebuffer Object
glGenFramebuffers(1, &m_frameBufferObject);
glBindFramebuffer(GL_FRAMEBUFFER, m_frameBufferObject);
}
//Setup shared Depth/Stencil buffer
glGenRenderbuffers(1, &m_depthAndStencilBufferObject);
glBindRenderbuffer(GL_RENDERBUFFER, m_depthAndStencilBufferObject);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8_OES,
mode.hdisplay, mode.vdisplay);
//Setup "numBuffer" many rendering targets
for (int i = 0; i < numBuffers; i++) {
QKmsFramebuffer *buffer = new QKmsFramebuffer();
glGenRenderbuffers(1, &buffer->renderBuffer);
glBindRenderbuffer(GL_RENDERBUFFER, buffer->renderBuffer);
buffer->graphicsBufferObject = gbm_bo_create(m_screen->device()->gbmDevice(),
mode.hdisplay, mode.vdisplay,
GBM_BO_FORMAT_XRGB8888,
GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
buffer->eglImage = eglCreateImageKHR(m_screen->device()->eglDisplay(), 0, EGL_NATIVE_PIXMAP_KHR,
buffer->graphicsBufferObject, 0);
glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER, buffer->eglImage);
quint32 stride = gbm_bo_get_pitch(buffer->graphicsBufferObject);
quint32 handle = gbm_bo_get_handle(buffer->graphicsBufferObject).u32;
int status = drmModeAddFB(m_screen->device()->fd(), mode.hdisplay, mode.vdisplay,
32, 32, stride, handle, &buffer->framebufferId);
//Todo: IF this returns true, then this is one less buffer that we use
//Not so fatal, but not handled at the moment.
if (status)
qFatal("failed to add framebuffer");
m_framebuffers.append(buffer);
}
//Attach the Depth and Stencil buffer
glFramebufferRenderbuffer(GL_FRAMEBUFFER,
GL_DEPTH_ATTACHMENT,
GL_RENDERBUFFER,
m_depthAndStencilBufferObject);
glFramebufferRenderbuffer(GL_FRAMEBUFFER,
GL_STENCIL_ATTACHMENT,
GL_RENDERBUFFER,
m_depthAndStencilBufferObject);
//Attach renderbuffer as Color Attachment.
glFramebufferRenderbuffer(GL_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
GL_RENDERBUFFER,
this->renderTargetBuffer());
}
