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

   1 /*
   2  * Copyright (C) 2012-2013 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_rasterizer.h"
  33 #include "fd2_context.h"
  34 #include "fd2_util.h"
  35
  36
  37 void *
  38 fd2_rasterizer_state_create(struct pipe_context *pctx,
  39                 const struct pipe_rasterizer_state *cso)
  40 {
  41         struct fd2_rasterizer_stateobj *so;
  42         float psize_min, psize_max;
  43
  44         so = CALLOC_STRUCT(fd2_rasterizer_stateobj);
  45         if (!so)
  46                 return NULL;
  47
  48         if (cso->point_size_per_vertex) {
  49                 psize_min = util_get_min_point_size(cso);
  50                 psize_max = 8192.0 - 0.0625;
  51         } else {
  52                 /* Force the point size to be as if the vertex output was disabled. */
  53                 psize_min = cso->point_size;
  54                 psize_max = cso->point_size;
  55         }
  56
  57         so->base = *cso;
  58
  59         so->pa_sc_line_stipple = cso->line_stipple_enable ?
  60                 A2XX_PA_SC_LINE_STIPPLE_LINE_PATTERN(cso->line_stipple_pattern) |
  61                 A2XX_PA_SC_LINE_STIPPLE_REPEAT_COUNT(cso->line_stipple_factor) : 0;
  62
  63         so->pa_cl_clip_cntl = 0; // TODO
  64
  65         so->pa_su_vtx_cntl =
  66                 A2XX_PA_SU_VTX_CNTL_PIX_CENTER(cso->half_pixel_center ? PIXCENTER_OGL : PIXCENTER_D3D) |
  67                 A2XX_PA_SU_VTX_CNTL_QUANT_MODE(ONE_SIXTEENTH);
  68
  69         so->pa_su_point_size =
  70                 A2XX_PA_SU_POINT_SIZE_HEIGHT(cso->point_size/2) |
  71                 A2XX_PA_SU_POINT_SIZE_WIDTH(cso->point_size/2);
  72
  73         so->pa_su_point_minmax =
  74                 A2XX_PA_SU_POINT_MINMAX_MIN(psize_min/2) |
  75                 A2XX_PA_SU_POINT_MINMAX_MAX(psize_max/2);
  76
  77         so->pa_su_line_cntl =
  78                 A2XX_PA_SU_LINE_CNTL_WIDTH(cso->line_width/2);
  79
  80         so->pa_su_sc_mode_cntl =
  81                 A2XX_PA_SU_SC_MODE_CNTL_VTX_WINDOW_OFFSET_ENABLE |
  82                 A2XX_PA_SU_SC_MODE_CNTL_FRONT_PTYPE(fd_polygon_mode(cso->fill_front)) |
  83                 A2XX_PA_SU_SC_MODE_CNTL_BACK_PTYPE(fd_polygon_mode(cso->fill_back));
  84
  85         if (cso->cull_face & PIPE_FACE_FRONT)
  86                 so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_CULL_FRONT;
  87         if (cso->cull_face & PIPE_FACE_BACK)
  88                 so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_CULL_BACK;
  89         if (!cso->flatshade_first)
  90                 so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_PROVOKING_VTX_LAST;
  91         if (!cso->front_ccw)
  92                 so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_FACE;
  93         if (cso->line_stipple_enable)
  94                 so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_LINE_STIPPLE_ENABLE;
  95         if (cso->multisample)
  96                 so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_MSAA_ENABLE;
  97
  98         if (cso->fill_front != PIPE_POLYGON_MODE_FILL ||
  99                         cso->fill_back != PIPE_POLYGON_MODE_FILL)
 100                 so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_POLYMODE(POLY_DUALMODE);
 101         else
 102                 so->pa_su_sc_mode_cntl |= A2XX_PA_SU_SC_MODE_CNTL_POLYMODE(POLY_DISABLED);
 103
 104         if (cso->offset_tri)
 105                 so->pa_su_sc_mode_cntl |=
 106                         A2XX_PA_SU_SC_MODE_CNTL_POLY_OFFSET_FRONT_ENABLE |
 107                         A2XX_PA_SU_SC_MODE_CNTL_POLY_OFFSET_BACK_ENABLE |
 108                         A2XX_PA_SU_SC_MODE_CNTL_POLY_OFFSET_PARA_ENABLE;
 109
 110         return so;
 111 }