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

   1 /*
   2  * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  * Authors:
  24  *    Rob Clark <robclark@freedesktop.org>
  25  */
  26
  27
  28 #include "pipe/p_state.h"
  29 #include "util/u_string.h"
  30 #include "util/u_memory.h"
  31
  32 #include "fd2_zsa.h"
  33 #include "fd2_context.h"
  34 #include "fd2_util.h"
  35
  36 void *
  37 fd2_zsa_state_create(struct pipe_context *pctx,
  38                 const struct pipe_depth_stencil_alpha_state *cso)
  39 {
  40         struct fd2_zsa_stateobj *so;
  41
  42         so = CALLOC_STRUCT(fd2_zsa_stateobj);
  43         if (!so)
  44                 return NULL;
  45
  46         so->base = *cso;
  47
  48         so->rb_depthcontrol |=
  49                 A2XX_RB_DEPTHCONTROL_ZFUNC(cso->depth.func); /* maps 1:1 */
  50
  51         if (cso->depth.enabled)
  52                 so->rb_depthcontrol |= A2XX_RB_DEPTHCONTROL_Z_ENABLE |
  53                         COND(!cso->alpha.enabled, A2XX_RB_DEPTHCONTROL_EARLY_Z_ENABLE);
  54         if (cso->depth.writemask)
  55                 so->rb_depthcontrol |= A2XX_RB_DEPTHCONTROL_Z_WRITE_ENABLE;
  56
  57         if (cso->stencil[0].enabled) {
  58                 const struct pipe_stencil_state *s = &cso->stencil[0];
  59
  60                 so->rb_depthcontrol |=
  61                         A2XX_RB_DEPTHCONTROL_STENCIL_ENABLE |
  62                         A2XX_RB_DEPTHCONTROL_STENCILFUNC(s->func) | /* maps 1:1 */
  63                         A2XX_RB_DEPTHCONTROL_STENCILFAIL(fd_stencil_op(s->fail_op)) |
  64                         A2XX_RB_DEPTHCONTROL_STENCILZPASS(fd_stencil_op(s->zpass_op)) |
  65                         A2XX_RB_DEPTHCONTROL_STENCILZFAIL(fd_stencil_op(s->zfail_op));
  66                 so->rb_stencilrefmask |=
  67                         0xff000000 | /* ??? */
  68                         A2XX_RB_STENCILREFMASK_STENCILWRITEMASK(s->writemask) |
  69                         A2XX_RB_STENCILREFMASK_STENCILMASK(s->valuemask);
  70
  71                 if (cso->stencil[1].enabled) {
  72                         const struct pipe_stencil_state *bs = &cso->stencil[1];
  73
  74                         so->rb_depthcontrol |=
  75                                 A2XX_RB_DEPTHCONTROL_BACKFACE_ENABLE |
  76                                 A2XX_RB_DEPTHCONTROL_STENCILFUNC_BF(bs->func) | /* maps 1:1 */
  77                                 A2XX_RB_DEPTHCONTROL_STENCILFAIL_BF(fd_stencil_op(bs->fail_op)) |
  78                                 A2XX_RB_DEPTHCONTROL_STENCILZPASS_BF(fd_stencil_op(bs->zpass_op)) |
  79                                 A2XX_RB_DEPTHCONTROL_STENCILZFAIL_BF(fd_stencil_op(bs->zfail_op));
  80                         so->rb_stencilrefmask_bf |=
  81                                 0xff000000 | /* ??? */
  82                                 A2XX_RB_STENCILREFMASK_STENCILWRITEMASK(bs->writemask) |
  83                                 A2XX_RB_STENCILREFMASK_STENCILMASK(bs->valuemask);
  84                 }
  85         }
  86
  87         if (cso->alpha.enabled) {
  88                 so->rb_colorcontrol =
  89                         A2XX_RB_COLORCONTROL_ALPHA_FUNC(cso->alpha.func) |
  90                         A2XX_RB_COLORCONTROL_ALPHA_TEST_ENABLE;
  91                 so->rb_alpha_ref = fui(cso->alpha.ref_value);
  92         }
  93
  94         return so;
  95 }