xref: /third_party/mesa3d/src/gallium/drivers/freedreno/a6xx/fd6_zsa.h

/*
 * 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_context.h"
#include "pipe/p_state.h"

#include "freedreno_util.h"

#include "fd6_context.h"

#define FD6_ZSA_NO_ALPHA    (1 << 0)
#define FD6_ZSA_DEPTH_CLIP_DISABLE (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) assert_dt
{
   int variant = 0;
   if (no_alpha)
      variant |= FD6_ZSA_NO_ALPHA;
   if (depth_clamp)
      variant |= FD6_ZSA_DEPTH_CLIP_DISABLE;
   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_ */