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/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */

/*

 * Copyright (C) 2012 Rob Clark 

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice (including the next

 * paragraph) shall be included in all copies or substantial portions of the

 * Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

 * SOFTWARE.

 *

 * Authors:

 *    Rob Clark 

 */

#include "pipe/p_state.h"

#include "util/u_string.h"

#include "util/u_memory.h"

#include "fd2_zsa.h"

#include "fd2_context.h"

#include "fd2_util.h"

void *

fd2_zsa_state_create(struct pipe_context *pctx,

		const struct pipe_depth_stencil_alpha_state *cso)

{

	struct fd2_zsa_stateobj *so;

	so = CALLOC_STRUCT(fd2_zsa_stateobj);

	if (!so)

		return NULL;

	so->base = *cso;

	so->rb_depthcontrol |=

		A2XX_RB_DEPTHCONTROL_ZFUNC(cso->depth.func); /* maps 1:1 */

	if (cso->depth.enabled)

		so->rb_depthcontrol |= A2XX_RB_DEPTHCONTROL_Z_ENABLE;

	if (cso->depth.writemask)

		so->rb_depthcontrol |= A2XX_RB_DEPTHCONTROL_Z_WRITE_ENABLE;

	if (cso->stencil[0].enabled) {

		const struct pipe_stencil_state *s = &cso->stencil[0];

		so->rb_depthcontrol |=

			A2XX_RB_DEPTHCONTROL_STENCIL_ENABLE |

			A2XX_RB_DEPTHCONTROL_STENCILFUNC(s->func) | /* maps 1:1 */

			A2XX_RB_DEPTHCONTROL_STENCILFAIL(fd_stencil_op(s->fail_op)) |

			A2XX_RB_DEPTHCONTROL_STENCILZPASS(fd_stencil_op(s->zpass_op)) |

			A2XX_RB_DEPTHCONTROL_STENCILZFAIL(fd_stencil_op(s->zfail_op));

		so->rb_stencilrefmask |=

			0xff000000 | /* ??? */

			A2XX_RB_STENCILREFMASK_STENCILWRITEMASK(s->writemask) |

			A2XX_RB_STENCILREFMASK_STENCILMASK(s->valuemask);

		if (cso->stencil[1].enabled) {

			const struct pipe_stencil_state *bs = &cso->stencil[1];

			so->rb_depthcontrol |=

				A2XX_RB_DEPTHCONTROL_BACKFACE_ENABLE |

				A2XX_RB_DEPTHCONTROL_STENCILFUNC_BF(bs->func) | /* maps 1:1 */

				A2XX_RB_DEPTHCONTROL_STENCILFAIL_BF(fd_stencil_op(bs->fail_op)) |

				A2XX_RB_DEPTHCONTROL_STENCILZPASS_BF(fd_stencil_op(bs->zpass_op)) |

				A2XX_RB_DEPTHCONTROL_STENCILZFAIL_BF(fd_stencil_op(bs->zfail_op));

			so->rb_stencilrefmask_bf |=

				0xff000000 | /* ??? */

				A2XX_RB_STENCILREFMASK_STENCILWRITEMASK(bs->writemask) |

				A2XX_RB_STENCILREFMASK_STENCILMASK(bs->valuemask);

		}

	}

	if (cso->alpha.enabled) {

		so->rb_colorcontrol =

			A2XX_RB_COLORCONTROL_ALPHA_FUNC(cso->alpha.func) |

			A2XX_RB_COLORCONTROL_ALPHA_TEST_ENABLE;

		so->rb_alpha_ref = fui(cso->alpha.ref_value);

	}

	return so;

}