src/gallium/drivers/freedreno/a2xx/fd2_zsa.c

   1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
   2
   3 /*
   4  * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  *
  25  * Authors:
  26  *    Rob Clark <robclark@freedesktop.org>
  27  */
  28
  29
  30 #include "pipe/p_state.h"
  31 #include "util/u_string.h"
  32 #include "util/u_memory.h"
  33
  34 #include "fd2_zsa.h"
  35 #include "fd2_context.h"
  36 #include "fd2_util.h"
  37
  38 void *
  39 fd2_zsa_state_create(struct pipe_context *pctx,
  40                 const struct pipe_depth_stencil_alpha_state *cso)
  41 {
  42         struct fd2_zsa_stateobj *so;
  43
  44         so = CALLOC_STRUCT(fd2_zsa_stateobj);
  45         if (!so)
  46                 return NULL;
  47
  48         so->base = *cso;
  49
  50         so->rb_depthcontrol |=
  51                 A2XX_RB_DEPTHCONTROL_ZFUNC(cso->depth.func); /* maps 1:1 */
  52
  53         if (cso->depth.enabled)
  54                 so->rb_depthcontrol |= A2XX_RB_DEPTHCONTROL_Z_ENABLE;
  55         if (cso->depth.writemask)
  56                 so->rb_depthcontrol |= A2XX_RB_DEPTHCONTROL_Z_WRITE_ENABLE;
  57
  58         if (cso->stencil[0].enabled) {
  59                 const struct pipe_stencil_state *s = &cso->stencil[0];
  60
  61                 so->rb_depthcontrol |=
  62                         A2XX_RB_DEPTHCONTROL_STENCIL_ENABLE |
  63                         A2XX_RB_DEPTHCONTROL_STENCILFUNC(s->func) | /* maps 1:1 */
  64                         A2XX_RB_DEPTHCONTROL_STENCILFAIL(fd_stencil_op(s->fail_op)) |
  65                         A2XX_RB_DEPTHCONTROL_STENCILZPASS(fd_stencil_op(s->zpass_op)) |
  66                         A2XX_RB_DEPTHCONTROL_STENCILZFAIL(fd_stencil_op(s->zfail_op));
  67                 so->rb_stencilrefmask |=
  68                         0xff000000 | /* ??? */
  69                         A2XX_RB_STENCILREFMASK_STENCILWRITEMASK(s->writemask) |
  70                         A2XX_RB_STENCILREFMASK_STENCILMASK(s->valuemask);
  71
  72                 if (cso->stencil[1].enabled) {
  73                         const struct pipe_stencil_state *bs = &cso->stencil[1];
  74
  75                         so->rb_depthcontrol |=
  76                                 A2XX_RB_DEPTHCONTROL_BACKFACE_ENABLE |
  77                                 A2XX_RB_DEPTHCONTROL_STENCILFUNC_BF(bs->func) | /* maps 1:1 */
  78                                 A2XX_RB_DEPTHCONTROL_STENCILFAIL_BF(fd_stencil_op(bs->fail_op)) |
  79                                 A2XX_RB_DEPTHCONTROL_STENCILZPASS_BF(fd_stencil_op(bs->zpass_op)) |
  80                                 A2XX_RB_DEPTHCONTROL_STENCILZFAIL_BF(fd_stencil_op(bs->zfail_op));
  81                         so->rb_stencilrefmask_bf |=
  82                                 0xff000000 | /* ??? */
  83                                 A2XX_RB_STENCILREFMASK_STENCILWRITEMASK(bs->writemask) |
  84                                 A2XX_RB_STENCILREFMASK_STENCILMASK(bs->valuemask);
  85                 }
  86         }
  87
  88         if (cso->alpha.enabled) {
  89                 so->rb_colorcontrol =
  90                         A2XX_RB_COLORCONTROL_ALPHA_FUNC(cso->alpha.func) |
  91                         A2XX_RB_COLORCONTROL_ALPHA_TEST_ENABLE;
  92                 so->rb_alpha_ref = fui(cso->alpha.ref_value);
  93         }
  94
  95         return so;
  96 }