#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#include <stdlib.h>

#include "glamor_priv.h"
#include "mipict.h"

/* Upload picture to texture.  We may need to flip the y axis or
 * wire alpha to 1. So we may conditional create fbo for the picture.
 * */
enum glamor_pixmap_status
glamor_upload_picture_to_texture(PicturePtr picture)
{
	PixmapPtr pixmap;
	assert(picture->pDrawable);
	pixmap = glamor_get_drawable_pixmap(picture->pDrawable);

	return glamor_upload_pixmap_to_texture(pixmap);
}


Bool
glamor_prepare_access_picture(PicturePtr picture, glamor_access_t access)
{
	if (!picture || !picture->pDrawable)
		return TRUE;

	return glamor_prepare_access(picture->pDrawable, access);
}

void
glamor_finish_access_picture(PicturePtr picture, glamor_access_t access)
{
	if (!picture || !picture->pDrawable)
		return;

	glamor_finish_access(picture->pDrawable, access);
}

/* 
 * We should already have drawable attached to it, if it has one.
 * Then set the attached pixmap to is_picture format, and set
 * the pict format.
 * */
int
glamor_create_picture(PicturePtr picture)
{
	PixmapPtr pixmap;
	glamor_pixmap_private *pixmap_priv;
	glamor_screen_private *glamor_priv;

	if (!picture || !picture->pDrawable)
		return 0;

	glamor_priv =
	    glamor_get_screen_private(picture->pDrawable->pScreen);
	pixmap = glamor_get_drawable_pixmap(picture->pDrawable);
	pixmap_priv = glamor_get_pixmap_private(pixmap);
	if (!pixmap_priv) {
	/* We must create a pixmap priv to track the picture format even
 	 * if the pixmap is a pure in memory pixmap. The reason is that
 	 * we may need to upload this pixmap to a texture on the fly. During
 	 * the uploading, we need to know the picture format. */
		glamor_set_pixmap_type(pixmap, GLAMOR_MEMORY);
		pixmap_priv = glamor_get_pixmap_private(pixmap);
	} else {
		if (GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv)) {
			/* If the picture format is not compatible with glamor fbo format,
			 * we have to mark this pixmap as a separated texture, and don't
			 * fallback to DDX layer. */
			if (pixmap_priv->type == GLAMOR_TEXTURE_DRM
			    && !glamor_pict_format_is_compatible(picture->format,
								 pixmap->drawable.depth))
				glamor_set_pixmap_type(pixmap, GLAMOR_SEPARATE_TEXTURE);
		}
	}

	pixmap_priv->is_picture = 1;
	pixmap_priv->pict_format = picture->format;

	return miCreatePicture(picture);
}

void
glamor_destroy_picture(PicturePtr picture)
{
	PixmapPtr pixmap;
	glamor_pixmap_private *pixmap_priv;
	glamor_screen_private *glamor_priv;

	if (!picture || !picture->pDrawable)
		return;

	glamor_priv =
	    glamor_get_screen_private(picture->pDrawable->pScreen);
	pixmap = glamor_get_drawable_pixmap(picture->pDrawable);
	pixmap_priv = glamor_get_pixmap_private(pixmap);

	if (pixmap_priv) {
		pixmap_priv->is_picture = 0;
		pixmap_priv->pict_format = 0;
	}
	miDestroyPicture(picture);
}

void
glamor_picture_format_fixup(PicturePtr picture,
			    glamor_pixmap_private * pixmap_priv)
{
	pixmap_priv->pict_format = picture->format;
}