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#include "pipe/p_context.h"
#include "pipe/p_util.h"
#include "nouveau_context.h"
#include "nouveau_drm.h"
#include "nouveau_dri.h"
#include "nouveau_local.h"
#include "nouveau_screen.h"
#include "nouveau_swapbuffers.h"

#if NOUVEAU_DRM_HEADER_PATCHLEVEL != 11
#error nouveau_drm.h version does not match expected version
#endif

/*
PUBLIC const char __driConfigOptions[] =
DRI_CONF_BEGIN
DRI_CONF_END;
static const GLuint __driNConfigOptions = 0;
*/

int
nouveau_screen_create(dri_screen_t *dri_screen, dri_framebuffer_t *dri_framebuf)
{
	/* XXX: Someone forgot to bump this? */
	static const dri_version_t ddx_expected = {0, 0, 10 /*NOUVEAU_DRM_HEADER_PATCHLEVEL*/};
	static const dri_version_t dri_expected = {4, 1, 0};
	static const dri_version_t drm_expected = {0, 0, NOUVEAU_DRM_HEADER_PATCHLEVEL};
	
	struct nouveau_dri	*nv_dri = dri_framebuf->private;
	struct nouveau_screen	*nv_screen;
	int			ret;
	
	if (!driCompareVersions(&ddx_expected, &dri_screen->ddx))
	{
		NOUVEAU_ERR("Unexpected DDX version.\n");
		return 1;
	}
	
	if (!driCompareVersions(&drm_expected, &dri_screen->drm))
	{
		NOUVEAU_ERR("Unexpected DRM version.\n");
		return 1;
	}
	
	if (!driCompareVersions(&dri_expected, &dri_screen->dri))
	{
		NOUVEAU_ERR("Unexpected DRI version.\n");
		return 1;
	}

	if (dri_framebuf->private_size != sizeof(struct nouveau_dri)) {
		NOUVEAU_ERR("DRI struct mismatch between DDX/DRI.\n");
		return 1;
	}

	nv_screen = CALLOC_STRUCT(nouveau_screen);
	if (!nv_screen)
		return 1;
	nv_screen->dri_screen = dri_screen;
	dri_screen->private = (void*)nv_screen;

	/*
	driParseOptionInfo(&nv_screen->option_cache,
			   __driConfigOptions, __driNConfigOptions);
	*/

	if ((ret = nouveau_device_open_existing(&nv_screen->device, 0,
						dri_screen->fd, 0))) {
		NOUVEAU_ERR("Failed opening nouveau device: %d.\n", ret);
		return 1;
	}

	nv_screen->front_offset = nv_dri->front_offset;
	nv_screen->front_pitch  = nv_dri->front_pitch * (nv_dri->bpp / 8);
	nv_screen->front_cpp = nv_dri->bpp / 8;
	nv_screen->front_height = nv_dri->height;

	return 0;
}

void
nouveau_screen_destroy(dri_screen_t *dri_screen)
{
	struct nouveau_screen *nv_screen = dri_screen->private;

	FREE(nv_screen);
}