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  1. /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
  2.  
  3. /*
  4.  * Copyright (C) 2014 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 "fd4_zsa.h"
  35. #include "fd4_context.h"
  36. #include "fd4_format.h"
  37.  
  38. void *
  39. fd4_zsa_state_create(struct pipe_context *pctx,
  40.                 const struct pipe_depth_stencil_alpha_state *cso)
  41. {
  42.         struct fd4_zsa_stateobj *so;
  43.  
  44.         so = CALLOC_STRUCT(fd4_zsa_stateobj);
  45.         if (!so)
  46.                 return NULL;
  47.  
  48.         so->base = *cso;
  49.  
  50.         so->rb_depth_control |=
  51.                         A4XX_RB_DEPTH_CONTROL_ZFUNC(cso->depth.func); /* maps 1:1 */
  52.  
  53.         if (cso->depth.enabled)
  54.                 so->rb_depth_control |=
  55.                         A4XX_RB_DEPTH_CONTROL_Z_ENABLE |
  56.                         A4XX_RB_DEPTH_CONTROL_Z_TEST_ENABLE;
  57.  
  58.         if (cso->depth.writemask)
  59.                 so->rb_depth_control |= A4XX_RB_DEPTH_CONTROL_Z_WRITE_ENABLE;
  60.  
  61.         if (cso->stencil[0].enabled) {
  62.                 const struct pipe_stencil_state *s = &cso->stencil[0];
  63.  
  64.                 so->rb_stencil_control |=
  65.                         A4XX_RB_STENCIL_CONTROL_STENCIL_READ |
  66.                         A4XX_RB_STENCIL_CONTROL_STENCIL_ENABLE |
  67.                         A4XX_RB_STENCIL_CONTROL_FUNC(s->func) | /* maps 1:1 */
  68.                         A4XX_RB_STENCIL_CONTROL_FAIL(fd_stencil_op(s->fail_op)) |
  69.                         A4XX_RB_STENCIL_CONTROL_ZPASS(fd_stencil_op(s->zpass_op)) |
  70.                         A4XX_RB_STENCIL_CONTROL_ZFAIL(fd_stencil_op(s->zfail_op));
  71.                 so->rb_stencil_control2 |=
  72.                         A4XX_RB_STENCIL_CONTROL2_STENCIL_BUFFER;
  73.                 so->rb_stencilrefmask |=
  74.                         0xff000000 | /* ??? */
  75.                         A4XX_RB_STENCILREFMASK_STENCILWRITEMASK(s->writemask) |
  76.                         A4XX_RB_STENCILREFMASK_STENCILMASK(s->valuemask);
  77.  
  78.                 if (cso->stencil[1].enabled) {
  79.                         const struct pipe_stencil_state *bs = &cso->stencil[1];
  80.  
  81.                         so->rb_stencil_control |=
  82.                                 A4XX_RB_STENCIL_CONTROL_STENCIL_ENABLE_BF |
  83.                                 A4XX_RB_STENCIL_CONTROL_FUNC_BF(bs->func) | /* maps 1:1 */
  84.                                 A4XX_RB_STENCIL_CONTROL_FAIL_BF(fd_stencil_op(bs->fail_op)) |
  85.                                 A4XX_RB_STENCIL_CONTROL_ZPASS_BF(fd_stencil_op(bs->zpass_op)) |
  86.                                 A4XX_RB_STENCIL_CONTROL_ZFAIL_BF(fd_stencil_op(bs->zfail_op));
  87.                         so->rb_stencilrefmask_bf |=
  88.                                 0xff000000 | /* ??? */
  89.                                 A4XX_RB_STENCILREFMASK_BF_STENCILWRITEMASK(bs->writemask) |
  90.                                 A4XX_RB_STENCILREFMASK_BF_STENCILMASK(bs->valuemask);
  91.                 }
  92.         }
  93.  
  94.         if (cso->alpha.enabled) {
  95.                 uint32_t ref = cso->alpha.ref_value * 255.0;
  96.                 so->gras_alpha_control =
  97.                         A4XX_GRAS_ALPHA_CONTROL_ALPHA_TEST_ENABLE;
  98.                 so->rb_alpha_control =
  99.                         A4XX_RB_ALPHA_CONTROL_ALPHA_TEST |
  100.                         A4XX_RB_ALPHA_CONTROL_ALPHA_REF(ref) |
  101.                         A4XX_RB_ALPHA_CONTROL_ALPHA_TEST_FUNC(cso->alpha.func);
  102.                 so->rb_depth_control |=
  103.                         A4XX_RB_DEPTH_CONTROL_EARLY_Z_DISABLE;
  104.         }
  105.  
  106.         so->rb_render_control = 0x8;  /* XXX */
  107.  
  108.         return so;
  109. }
  110.