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Viewing changes to src/gallium/drivers/freedreno/a3xx/fd3_zsa.c

  • Committer: mmach
  • Date: 2022-09-22 19:56:13 UTC
  • Revision ID: netbit73@gmail.com-20220922195613-wtik9mmy20tmor0i
2022-09-22 21:17:09

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src/gallium/drivers/freedreno/a3xx/fd3_zsa.c
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/*
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 * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the "Software"),
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 * to deal in the Software without restriction, including without limitation
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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 * and/or sell copies of the Software, and to permit persons to whom the
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 * Software is furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice (including the next
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 * paragraph) shall be included in all copies or substantial portions of the
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 * Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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 * SOFTWARE.
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 *
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 * Authors:
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 *    Rob Clark <robclark@freedesktop.org>
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 */
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#include "pipe/p_state.h"
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#include "util/u_memory.h"
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#include "util/u_string.h"
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#include "fd3_context.h"
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#include "fd3_format.h"
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#include "fd3_zsa.h"
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void *
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fd3_zsa_state_create(struct pipe_context *pctx,
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                     const struct pipe_depth_stencil_alpha_state *cso)
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{
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   struct fd3_zsa_stateobj *so;
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   so = CALLOC_STRUCT(fd3_zsa_stateobj);
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   if (!so)
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      return NULL;
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   so->base = *cso;
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   so->rb_depth_control |=
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      A3XX_RB_DEPTH_CONTROL_ZFUNC(cso->depth_func); /* maps 1:1 */
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   if (cso->depth_enabled)
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      so->rb_depth_control |=
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         A3XX_RB_DEPTH_CONTROL_Z_TEST_ENABLE | A3XX_RB_DEPTH_CONTROL_Z_READ_ENABLE;
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   if (cso->depth_writemask)
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      so->rb_depth_control |= A3XX_RB_DEPTH_CONTROL_Z_WRITE_ENABLE;
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   if (cso->stencil[0].enabled) {
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      const struct pipe_stencil_state *s = &cso->stencil[0];
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      so->rb_stencil_control |=
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         A3XX_RB_STENCIL_CONTROL_STENCIL_READ |
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         A3XX_RB_STENCIL_CONTROL_STENCIL_ENABLE |
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         A3XX_RB_STENCIL_CONTROL_FUNC(s->func) | /* maps 1:1 */
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         A3XX_RB_STENCIL_CONTROL_FAIL(fd_stencil_op(s->fail_op)) |
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         A3XX_RB_STENCIL_CONTROL_ZPASS(fd_stencil_op(s->zpass_op)) |
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         A3XX_RB_STENCIL_CONTROL_ZFAIL(fd_stencil_op(s->zfail_op));
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      so->rb_stencilrefmask |=
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         0xff000000 | /* ??? */
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         A3XX_RB_STENCILREFMASK_STENCILWRITEMASK(s->writemask) |
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         A3XX_RB_STENCILREFMASK_STENCILMASK(s->valuemask);
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      if (cso->stencil[1].enabled) {
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         const struct pipe_stencil_state *bs = &cso->stencil[1];
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         so->rb_stencil_control |=
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            A3XX_RB_STENCIL_CONTROL_STENCIL_ENABLE_BF |
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            A3XX_RB_STENCIL_CONTROL_FUNC_BF(bs->func) | /* maps 1:1 */
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            A3XX_RB_STENCIL_CONTROL_FAIL_BF(fd_stencil_op(bs->fail_op)) |
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            A3XX_RB_STENCIL_CONTROL_ZPASS_BF(fd_stencil_op(bs->zpass_op)) |
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            A3XX_RB_STENCIL_CONTROL_ZFAIL_BF(fd_stencil_op(bs->zfail_op));
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         so->rb_stencilrefmask_bf |=
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            0xff000000 | /* ??? */
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            A3XX_RB_STENCILREFMASK_STENCILWRITEMASK(bs->writemask) |
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            A3XX_RB_STENCILREFMASK_STENCILMASK(bs->valuemask);
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      }
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   }
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   if (cso->alpha_enabled) {
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      so->rb_render_control =
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         A3XX_RB_RENDER_CONTROL_ALPHA_TEST |
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         A3XX_RB_RENDER_CONTROL_ALPHA_TEST_FUNC(cso->alpha_func);
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      so->rb_alpha_ref = A3XX_RB_ALPHA_REF_UINT(cso->alpha_ref_value * 255.0f) |
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                         A3XX_RB_ALPHA_REF_FLOAT(cso->alpha_ref_value);
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      so->rb_depth_control |= A3XX_RB_DEPTH_CONTROL_EARLY_Z_DISABLE;
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   }
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   return so;
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}