RenderingBackend::BufferExport RenderingBackendGBM::Surface::lockFrontBuffer()
{
struct gbm_bo* bo = gbm_surface_lock_front_buffer(m_surface);
assert(bo);
uint32_t handle = gbm_bo_get_handle(bo).u32;
#ifndef NDEBUG
auto result =
#endif
m_lockedBuffers.insert({ handle, bo });
assert(result.second);
auto* data = static_cast<BufferDataGBM*>(gbm_bo_get_user_data(bo));
if (data) {
std::pair<uint32_t, uint32_t> storedSize{ data->width, data->height };
if (m_size == storedSize)
return RenderingBackend::BufferExport{ -1, reinterpret_cast<const uint8_t*>(data), sizeof(BufferDataGBM) };
delete data;
}
data = new BufferDataGBM{ handle, m_size.first, m_size.second, gbm_bo_get_stride(bo), gbm_bo_get_format(bo), BufferDataGBM::magicValue };
gbm_bo_set_user_data(bo, data, &destroyBOData);
return RenderingBackend::BufferExport{ gbm_bo_get_fd(bo), reinterpret_cast<const uint8_t*>(data), sizeof(BufferDataGBM) };
}
struct wl_buffer *
xwl_glamor_pixmap_get_wl_buffer(PixmapPtr pixmap)
{
struct xwl_screen *xwl_screen = xwl_screen_get(pixmap->drawable.pScreen);
struct xwl_pixmap *xwl_pixmap = xwl_pixmap_get(pixmap);
int prime_fd;
if (xwl_pixmap->buffer)
return xwl_pixmap->buffer;
prime_fd = gbm_bo_get_fd(xwl_pixmap->bo);
if (prime_fd == -1)
return NULL;
xwl_pixmap->buffer =
wl_drm_create_prime_buffer(xwl_screen->drm, prime_fd,
pixmap->drawable.width,
pixmap->drawable.height,
drm_format_for_depth(pixmap->drawable.depth),
0, gbm_bo_get_stride(xwl_pixmap->bo),
0, 0,
0, 0);
close(prime_fd);
return xwl_pixmap->buffer;
}
static int
xwl_dri3_fd_from_pixmap(ScreenPtr screen, PixmapPtr pixmap,
CARD16 *stride, CARD32 *size)
{
struct xwl_pixmap *xwl_pixmap;
xwl_pixmap = xwl_pixmap_get(pixmap);
*stride = gbm_bo_get_stride(xwl_pixmap->bo);
*size = pixmap->drawable.width * *stride;
return gbm_bo_get_fd(xwl_pixmap->bo);
}
bool DisplayOzone::Buffer::resize(int32_t width, int32_t height)
{
if (mWidth == width && mHeight == height)
{
return true;
}
reset();
if (width <= 0 || height <= 0)
{
return true;
}
mBO = gbm_bo_create(mDisplay->mGBM, width, height, mGBMFormat, mUseFlags);
if (!mBO)
{
return false;
}
mDMABuf = gbm_bo_get_fd(mBO);
if (mDMABuf < 0)
{
return false;
}
// clang-format off
const EGLint attr[] =
{
EGL_WIDTH, width,
EGL_HEIGHT, height,
EGL_LINUX_DRM_FOURCC_EXT, UnsignedToSigned(mDRMFormat),
EGL_DMA_BUF_PLANE0_FD_EXT, mDMABuf,
EGL_DMA_BUF_PLANE0_PITCH_EXT, UnsignedToSigned(gbm_bo_get_stride(mBO)),
EGL_DMA_BUF_PLANE0_OFFSET_EXT, 0,
EGL_NONE,
};
// clang-format on
mImage = mDisplay->mEGL->createImageKHR(EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, nullptr, attr);
if (mImage == EGL_NO_IMAGE_KHR)
{
return false;
}
FunctionsGL *gl = mDisplay->mFunctionsGL;
StateManagerGL *sm = mDisplay->getRenderer()->getStateManager();
gl->genRenderbuffers(1, &mColorBuffer);
sm->bindRenderbuffer(GL_RENDERBUFFER, mColorBuffer);
gl->eglImageTargetRenderbufferStorageOES(GL_RENDERBUFFER, mImage);
sm->bindFramebuffer(GL_FRAMEBUFFER, mGLFB);
gl->framebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0_EXT, GL_RENDERBUFFER,
mColorBuffer);
if (mDepthBits || mStencilBits)
{
gl->genRenderbuffers(1, &mDSBuffer);
sm->bindRenderbuffer(GL_RENDERBUFFER, mDSBuffer);
gl->renderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8_OES, width, height);
}
if (mDepthBits)
{
gl->framebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER,
mDSBuffer);
}
if (mStencilBits)
{
gl->framebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER,
mDSBuffer);
}
mWidth = width;
mHeight = height;
return true;
}
bool CreateFramebuffer(int width, int height, Framebuffer& framebuffer) {
framebuffer.bo = gbm_bo_create(gbm_, width, height, GBM_FORMAT_XRGB8888,
GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
if (!framebuffer.bo) {
fprintf(stderr, "failed to create a gbm buffer.\n");
return false;
}
framebuffer.fd = gbm_bo_get_fd(framebuffer.bo);
if (framebuffer.fd < 0) {
fprintf(stderr, "failed to get fb for bo: %d", framebuffer.fd);
return false;
}
uint32_t handle = gbm_bo_get_handle(framebuffer.bo).u32;
uint32_t stride = gbm_bo_get_stride(framebuffer.bo);
uint32_t offset = 0;
drmModeAddFB2(drm_->GetFD(), width, height, GBM_FORMAT_XRGB8888, &handle,
&stride, &offset, &framebuffer.fb_id, 0);
if (!framebuffer.fb_id) {
fprintf(stderr, "failed to create framebuffer from buffer object.\n");
return false;
}
const EGLint khr_image_attrs[] = {EGL_DMA_BUF_PLANE0_FD_EXT,
framebuffer.fd,
EGL_WIDTH,
width,
EGL_HEIGHT,
height,
EGL_LINUX_DRM_FOURCC_EXT,
GBM_FORMAT_XRGB8888,
EGL_DMA_BUF_PLANE0_PITCH_EXT,
static_cast<const int>(stride),
EGL_DMA_BUF_PLANE0_OFFSET_EXT,
static_cast<const int>(offset),
EGL_NONE};
framebuffer.image =
egl_.CreateImageKHR(egl_.display, EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT,
nullptr /* no client buffer */, khr_image_attrs);
if (framebuffer.image == EGL_NO_IMAGE_KHR) {
fprintf(stderr, "failed to make image from buffer object: %s\n",
EglGetError());
return false;
}
glGenTextures(1, &framebuffer.gl_tex);
glBindTexture(GL_TEXTURE_2D, framebuffer.gl_tex);
egl_.EGLImageTargetTexture2DOES(GL_TEXTURE_2D, framebuffer.image);
glBindTexture(GL_TEXTURE_2D, 0);
glGenFramebuffers(1, &framebuffer.gl_fb);
glBindFramebuffer(GL_FRAMEBUFFER, framebuffer.gl_fb);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
framebuffer.gl_tex, 0);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
fprintf(stderr,
"failed framebuffer check for created target buffer: %x\n",
glCheckFramebufferStatus(GL_FRAMEBUFFER));
glDeleteFramebuffers(1, &framebuffer.gl_fb);
glDeleteTextures(1, &framebuffer.gl_tex);
return false;
}
return true;
}
