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

/*

 * Copyright (C) 2013 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 "fd3_rasterizer.h"

#include "fd3_context.h"

#include "fd3_format.h"

void *

fd3_rasterizer_state_create(struct pipe_context *pctx,

		const struct pipe_rasterizer_state *cso)

{

	struct fd3_rasterizer_stateobj *so;

	float psize_min, psize_max;

	so = CALLOC_STRUCT(fd3_rasterizer_stateobj);

	if (!so)

		return NULL;

	so->base = *cso;

	if (cso->point_size_per_vertex) {

		psize_min = util_get_min_point_size(cso);

		psize_max = 4092;

	} else {

		/* Force the point size to be as if the vertex output was disabled. */

		psize_min = cso->point_size;

		psize_max = cso->point_size;

	}

/*

	if (cso->line_stipple_enable) {

		??? TODO line stipple

	}

	TODO cso->half_pixel_center

	if (cso->multisample)

		TODO

*/

	so->gras_cl_clip_cntl = A3XX_GRAS_CL_CLIP_CNTL_IJ_PERSP_CENTER; /* ??? */

	so->gras_su_point_minmax =

			A3XX_GRAS_SU_POINT_MINMAX_MIN(psize_min) |

			A3XX_GRAS_SU_POINT_MINMAX_MAX(psize_max);

	so->gras_su_point_size   = A3XX_GRAS_SU_POINT_SIZE(cso->point_size);

	so->gras_su_poly_offset_scale =

			A3XX_GRAS_SU_POLY_OFFSET_SCALE_VAL(cso->offset_scale);

	so->gras_su_poly_offset_offset =

			A3XX_GRAS_SU_POLY_OFFSET_OFFSET(cso->offset_units);

	so->gras_su_mode_control =

			A3XX_GRAS_SU_MODE_CONTROL_LINEHALFWIDTH(cso->line_width/2.0);

	so->pc_prim_vtx_cntl =

		A3XX_PC_PRIM_VTX_CNTL_POLYMODE_FRONT_PTYPE(fd_polygon_mode(cso->fill_front)) |

		A3XX_PC_PRIM_VTX_CNTL_POLYMODE_BACK_PTYPE(fd_polygon_mode(cso->fill_back));

	if (cso->fill_front != PIPE_POLYGON_MODE_FILL ||

		cso->fill_back != PIPE_POLYGON_MODE_FILL)

		so->pc_prim_vtx_cntl |= A3XX_PC_PRIM_VTX_CNTL_POLYMODE_ENABLE;

	if (cso->cull_face & PIPE_FACE_FRONT)

		so->gras_su_mode_control |= A3XX_GRAS_SU_MODE_CONTROL_CULL_FRONT;

	if (cso->cull_face & PIPE_FACE_BACK)

		so->gras_su_mode_control |= A3XX_GRAS_SU_MODE_CONTROL_CULL_BACK;

	if (!cso->front_ccw)

		so->gras_su_mode_control |= A3XX_GRAS_SU_MODE_CONTROL_FRONT_CW;

	if (!cso->flatshade_first)

		so->pc_prim_vtx_cntl |= A3XX_PC_PRIM_VTX_CNTL_PROVOKING_VTX_LAST;

	if (cso->offset_tri)

		so->gras_su_mode_control |= A3XX_GRAS_SU_MODE_CONTROL_POLY_OFFSET;

	if (!cso->depth_clip)

		so->gras_cl_clip_cntl |= A3XX_GRAS_CL_CLIP_CNTL_CLIP_DISABLE;

	return so;

}