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
37 bool
brw_is_drawing_points(const struct brw_context * brw)38 brw_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
61 bool
brw_is_drawing_lines(const struct brw_context * brw)62 brw_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