1/*
2 * Copyright © 2009 Intel Corporation
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
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 *
23 * Authors:
24 *    Eric Anholt <eric@anholt.net>
25 *
26 */
27
28#include "brw_context.h"
29#include "brw_state.h"
30#include "brw_defines.h"
31#include "compiler/brw_eu_defines.h"
32#include "brw_util.h"
33#include "intel_batchbuffer.h"
34#include "main/fbobject.h"
35#include "main/framebuffer.h"
36
37bool
38brw_is_drawing_points(const struct brw_context *brw)
39{
40   /* Determine if the primitives *reaching the SF* are points */
41   /* _NEW_POLYGON */
42   if (brw->ctx.Polygon.FrontMode == GL_POINT ||
43       brw->ctx.Polygon.BackMode == GL_POINT) {
44      return true;
45   }
46
47   if (brw->gs.base.prog_data) {
48      /* BRW_NEW_GS_PROG_DATA */
49      return brw_gs_prog_data(brw->gs.base.prog_data)->output_topology ==
50             _3DPRIM_POINTLIST;
51   } else if (brw->tes.base.prog_data) {
52      /* BRW_NEW_TES_PROG_DATA */
53      return brw_tes_prog_data(brw->tes.base.prog_data)->output_topology ==
54             BRW_TESS_OUTPUT_TOPOLOGY_POINT;
55   } else {
56      /* BRW_NEW_PRIMITIVE */
57      return brw->primitive == _3DPRIM_POINTLIST;
58   }
59}
60
61bool
62brw_is_drawing_lines(const struct brw_context *brw)
63{
64   /* Determine if the primitives *reaching the SF* are points */
65   /* _NEW_POLYGON */
66   if (brw->ctx.Polygon.FrontMode == GL_LINE ||
67       brw->ctx.Polygon.BackMode == GL_LINE) {
68      return true;
69   }
70
71   if (brw->gs.base.prog_data) {
72      /* BRW_NEW_GS_PROG_DATA */
73      return brw_gs_prog_data(brw->gs.base.prog_data)->output_topology ==
74             _3DPRIM_LINESTRIP;
75   } else if (brw->tes.base.prog_data) {
76      /* BRW_NEW_TES_PROG_DATA */
77      return brw_tes_prog_data(brw->tes.base.prog_data)->output_topology ==
78             BRW_TESS_OUTPUT_TOPOLOGY_LINE;
79   } else {
80      /* BRW_NEW_PRIMITIVE */
81      switch (brw->primitive) {
82      case _3DPRIM_LINELIST:
83      case _3DPRIM_LINESTRIP:
84      case _3DPRIM_LINELOOP:
85         return true;
86      }
87   }
88   return false;
89}
90
91