C++ (Cpp) createpix Examples

Example #1

File: msm-dri2.c Project: crondog/xf86-video-freedreno

/**
 * Create Buffer.
 */
static DRI2BufferPtr
MSMDRI2CreateBuffer(DrawablePtr pDraw, unsigned int attachment,
		unsigned int format)
{
	ScreenPtr pScreen = pDraw->pScreen;
	ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
	MSMDRI2BufferPtr buf = calloc(1, sizeof(*buf));
	PixmapPtr pPixmap;
	int ret;

	DEBUG_MSG("pDraw=%p, attachment=%d, format=%08x",
			pDraw, attachment, format);

	if (!buf) {
		return NULL;
	}

	if (attachment == DRI2BufferFrontLeft) {
		pPixmap = draw2pix(pDraw);
		pPixmap->refcnt++;
	} else {
		pPixmap = createpix(pDraw);
	}

	DRIBUF(buf)->attachment = attachment;
	DRIBUF(buf)->cpp = pPixmap->drawable.bitsPerPixel / 8;
	DRIBUF(buf)->format = format;
	buf->refcnt = 1;
	buf->pPixmap = pPixmap;

	ret = msm_get_pixmap_name(pPixmap, &DRIBUF(buf)->name,
			&DRIBUF(buf)->pitch);
	if (ret) {
		ERROR_MSG("could not get buffer name: %d", ret);
		MSMDRI2DestroyBuffer(pDraw, DRIBUF(buf));
		return NULL;
	}

	return DRIBUF(buf);
}

Example #2

File: armsoc_dri2.c Project: freedesktop-unofficial-mirror/xorg__driver__xf86-video-armsoc

static Bool create_buffer(DrawablePtr pDraw, struct ARMSOCDRI2BufferRec *buf)
{
	ScreenPtr pScreen = pDraw->pScreen;
	ScrnInfoPtr pScrn = xf86ScreenToScrn(pScreen);
	struct ARMSOCRec *pARMSOC = ARMSOCPTR(pScrn);
	DRI2BufferPtr buffer = DRIBUF(buf);
	PixmapPtr pPixmap = NULL;
	struct armsoc_bo *bo;
	int ret;

	if (buffer->attachment == DRI2BufferFrontLeft) {
		pPixmap = draw2pix(pDraw);
		pPixmap->refcnt++;
	} else {
		pPixmap = createpix(pDraw);
	}

	if (!pPixmap) {
		assert(buffer->attachment != DRI2BufferFrontLeft);
		ERROR_MSG("Failed to create back buffer for window");
		goto fail;
	}

	if (buffer->attachment == DRI2BufferBackLeft && pARMSOC->driNumBufs > 2) {
		buf->pPixmaps = calloc(pARMSOC->driNumBufs-1,
				sizeof(PixmapPtr));
		buf->numPixmaps = pARMSOC->driNumBufs-1;
	} else {
		buf->pPixmaps = malloc(sizeof(PixmapPtr));
		buf->numPixmaps = 1;
	}

	if (!buf->pPixmaps) {
		ERROR_MSG("Failed to allocate PixmapPtr array for DRI2Buffer");
		goto fail;
	}

	buf->pPixmaps[0] = pPixmap;
	assert(buf->currentPixmap == 0);

	bo = ARMSOCPixmapBo(pPixmap);
	if (!bo) {
		ERROR_MSG(
				"Attempting to DRI2 wrap a pixmap with no DRM buffer object backing");
		goto fail;
	}

	DRIBUF(buf)->pitch = exaGetPixmapPitch(pPixmap);
	DRIBUF(buf)->cpp = pPixmap->drawable.bitsPerPixel / 8;
	DRIBUF(buf)->flags = 0;
	buf->refcnt = 1;
	buf->previous_canflip = canflip(pDraw);

	ret = armsoc_bo_get_name(bo, &DRIBUF(buf)->name);
	if (ret) {
		ERROR_MSG("could not get buffer name: %d", ret);
		goto fail;
	}

	if (canflip(pDraw) && buffer->attachment != DRI2BufferFrontLeft) {
		/* Create an fb around this buffer. This will fail and we will
		 * fall back to blitting if the display controller hardware
		 * cannot scan out this buffer (for example, if it doesn't
		 * support the format or there was insufficient scanout memory
		 * at buffer creation time). */
		int ret = armsoc_bo_add_fb(bo);
		if (ret) {
			WARNING_MSG(
					"Falling back to blitting a flippable window");
		}
#if DRI2INFOREC_VERSION >= 6
		else if (FALSE == DRI2SwapLimit(pDraw, pARMSOC->swap_chain_size)) {
			WARNING_MSG(
				"Failed to set DRI2SwapLimit(%x,%d)",
				(unsigned int)pDraw, pARMSOC->swap_chain_size);
		}
#endif /* DRI2INFOREC_VERSION >= 6 */
	}

	DRI2_BUFFER_SET_FB(DRIBUF(buf)->flags, armsoc_bo_get_fb(bo) > 0 ? 1 : 0);
	DRI2_BUFFER_SET_REUSED(DRIBUF(buf)->flags, 0);
	/* Register Pixmap as having a buffer that can be accessed externally,
	 * so needs synchronised access */
	ARMSOCRegisterExternalAccess(pPixmap);

	return TRUE;

fail:
	if (pPixmap != NULL) {
		if (buffer->attachment != DRI2BufferFrontLeft)
			pScreen->DestroyPixmap(pPixmap);
		else
			pPixmap->refcnt--;
	}

	return FALSE;
}