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/*
 * Copyright (C) 2016 Rob Clark <robclark@freedesktop.org>
 * Copyright © 2018 Google, Inc.
 *
 * 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 <robclark@freedesktop.org>
 */

#ifndef FD6_ZSA_H_
#define FD6_ZSA_H_


#include "pipe/p_state.h"
#include "pipe/p_context.h"

#include "freedreno_util.h"

#include "fd6_context.h"

#define FD6_ZSA_NO_ALPHA    (1 << 0)
#define FD6_ZSA_DEPTH_CLAMP (1 << 1)

struct fd6_zsa_stateobj {
	struct pipe_depth_stencil_alpha_state base;

	uint32_t rb_alpha_control;
	uint32_t rb_depth_cntl;
	uint32_t rb_stencil_control;
	uint32_t rb_stencilmask;
	uint32_t rb_stencilwrmask;

	struct fd6_lrz_state lrz;
	bool writes_zs;     /* writes depth and/or stencil */
	bool invalidate_lrz;
	bool alpha_test;

	struct fd_ringbuffer *stateobj[4];
};

static inline struct fd6_zsa_stateobj *
fd6_zsa_stateobj(struct pipe_depth_stencil_alpha_state *zsa)
{
	return (struct fd6_zsa_stateobj *)zsa;
}

static inline struct fd_ringbuffer *
fd6_zsa_state(struct fd_context *ctx, bool no_alpha, bool depth_clamp)
{
	int variant = 0;
	if (no_alpha)
		variant |= FD6_ZSA_NO_ALPHA;
	if (depth_clamp)
		variant |= FD6_ZSA_DEPTH_CLAMP;
	return fd6_zsa_stateobj(ctx->zsa)->stateobj[variant];
}

void * fd6_zsa_state_create(struct pipe_context *pctx,
		const struct pipe_depth_stencil_alpha_state *cso);

void fd6_zsa_state_delete(struct pipe_context *pctx,
		void *hwcso);

#endif /* FD6_ZSA_H_ */