1 /**************************************************************************
2 *
3 * Copyright 2007 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28
29 #include "sp_context.h"
30 #include "sp_state.h"
31 #include "pipe/p_shader_tokens.h"
32
33
34 static void
insert_stage_at_head(struct softpipe_context * sp,struct quad_stage * quad)35 insert_stage_at_head(struct softpipe_context *sp, struct quad_stage *quad)
36 {
37 quad->next = sp->quad.first;
38 sp->quad.first = quad;
39 }
40
41
42 void
sp_build_quad_pipeline(struct softpipe_context * sp)43 sp_build_quad_pipeline(struct softpipe_context *sp)
44 {
45 boolean early_depth_test =
46 (sp->depth_stencil->depth.enabled &&
47 sp->framebuffer.zsbuf &&
48 !sp->depth_stencil->alpha.enabled &&
49 !sp->fs_variant->info.uses_kill &&
50 !sp->fs_variant->info.writes_z &&
51 !sp->fs_variant->info.writes_stencil) ||
52 sp->fs_variant->info.properties[TGSI_PROPERTY_FS_EARLY_DEPTH_STENCIL];
53
54 sp->quad.first = sp->quad.blend;
55
56 sp->early_depth = early_depth_test;
57 if (early_depth_test) {
58 insert_stage_at_head( sp, sp->quad.shade );
59 insert_stage_at_head( sp, sp->quad.depth_test );
60 }
61 else {
62 insert_stage_at_head( sp, sp->quad.depth_test );
63 insert_stage_at_head( sp, sp->quad.shade );
64 }
65
66 #if !DO_PSTIPPLE_IN_DRAW_MODULE && !DO_PSTIPPLE_IN_HELPER_MODULE
67 if (sp->rasterizer->poly_stipple_enable)
68 insert_stage_at_head( sp, sp->quad.pstipple );
69 #endif
70 }
71
72