src/gallium/drivers/freedreno/a2xx/fd2_rasterizer.c

   1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
   2
   3 /*
   4  * Copyright (C) 2012-2013 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_rasterizer.h"
  35 #include "fd2_context.h"
  36 #include "fd2_util.h"
  37
  38
  39 void *
  40 fd2_rasterizer_state_create(struct pipe_context *pctx,
  41                 const struct pipe_rasterizer_state *cso)
  42 {
  43         struct fd2_rasterizer_stateobj *so;
  44         float psize_min, psize_max;
  45
  46         so = CALLOC_STRUCT(fd2_rasterizer_stateobj);
  47         if (!so)
  48                 return NULL;
  49
  50         if (cso->point_size_per_vertex) {
  51                 psize_min = util_get_min_point_size(cso);
  52                 psize_max = 8192;
  53         } else {
  54                 /* Force the point size to be as if the vertex output was disabled. */
  55                 psize_min = cso->point_size;
  56                 psize_max = cso->point_size;
  57         }
  58
  59         so->base = *cso;
  60
  61         so->pa_sc_line_stipple = cso->line_stipple_enable ?
  62                 A2XX_PA_SC_LINE_STIPPLE_LINE_PATTERN(cso->line_stipple_pattern) |
  63                 A2XX_PA_SC_LINE_STIPPLE_REPEAT_COUNT(cso->line_stipple_factor) : 0;
  64
  65         so->pa_cl_clip_cntl = 0; // TODO
  66
  67         so->pa_su_vtx_cntl =
  68                 A2XX_PA_SU_VTX_CNTL_PIX_CENTER(cso->half_pixel_center ? PIXCENTER_OGL : PIXCENTER_D3D) |
  69                 A2XX_PA_SU_VTX_CNTL_QUANT_MODE(ONE_SIXTEENTH);
  70
  71         so->pa_su_point_size =
  72                 A2XX_PA_SU_POINT_SIZE_HEIGHT(cso->point_size/2) |
  73                 A2XX_PA_SU_POINT_SIZE_WIDTH(cso->point_size/2);
  74
  75         so->pa_su_point_minmax =
  76                 A2XX_PA_SU_POINT_MINMAX_MIN(psize_min/2) |
  77                 A2XX_PA_SU_POINT_MINMAX_MAX(psize_max/2);
  78
  79         so->pa_su_line_cntl =
  80                 A2XX_PA_SU_LINE_CNTL_WIDTH(cso->line_width/2);
  81
  82         so->pa_su_sc_mode_cntl =
  83                 A2XX_PA_SU_SC_MODE_CNTL_VTX_WINDOW_OFFSET_ENABLE |
  84                 A2XX_PA_SU_SC_MODE_CNTL_FRONT_PTYPE(fd_polygon_mode(cso->fill_front)) |
  85                 A2XX_PA_SU_SC_MODE_CNTL_BACK_PTYPE(fd_polygon_mode(cso->fill_back));
  86
  87         if (cso->cull_face & PIPE_FACE_FRONT)
  88                 so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_CULL_FRONT;
  89         if (cso->cull_face & PIPE_FACE_BACK)
  90                 so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_CULL_BACK;
  91         if (!cso->flatshade_first)
  92                 so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_PROVOKING_VTX_LAST;
  93         if (!cso->front_ccw)
  94                 so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_FACE;
  95         if (cso->line_stipple_enable)
  96                 so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_LINE_STIPPLE_ENABLE;
  97         if (cso->multisample)
  98                 so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_MSAA_ENABLE;
  99
 100         if (cso->fill_front != PIPE_POLYGON_MODE_FILL ||
 101                         cso->fill_back != PIPE_POLYGON_MODE_FILL)
 102                 so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_POLYMODE(POLY_DUALMODE);
 103         else
 104                 so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_POLYMODE(POLY_DISABLED);
 105
 106         if (cso->offset_tri)
 107                 so->pa_su_sc_mode_cntl |=
 108                         A2XX_PA_SU_SC_MODE_CNTL_POLY_OFFSET_FRONT_ENABLE |
 109                         A2XX_PA_SU_SC_MODE_CNTL_POLY_OFFSET_BACK_ENABLE |
 110                         A2XX_PA_SU_SC_MODE_CNTL_POLY_OFFSET_PARA_ENABLE;
 111
 112         return so;
 113 }