1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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 TUNGSTEN GRAPHICS 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.
26 **************************************************************************/
29 #include "sp_context.h"
31 #include "pipe/p_shader_tokens.h"
35 struct softpipe_context
*sp
,
36 struct quad_stage
*quad
)
38 quad
->next
= sp
->quad
.first
;
39 sp
->quad
.first
= quad
;
43 sp_build_depth_stencil(
44 struct softpipe_context
*sp
)
46 if (sp
->depth_stencil
->stencil
[0].enabled
||
47 sp
->depth_stencil
->stencil
[1].enabled
) {
48 sp_push_quad_first( sp
, sp
->quad
.stencil_test
);
50 else if (sp
->depth_stencil
->depth
.enabled
&&
51 sp
->framebuffer
.zsbuf
) {
52 sp_push_quad_first( sp
, sp
->quad
.depth_test
);
57 sp_build_quad_pipeline(struct softpipe_context
*sp
)
59 boolean early_depth_test
=
60 sp
->depth_stencil
->depth
.enabled
&&
61 sp
->framebuffer
.zsbuf
&&
62 !sp
->depth_stencil
->alpha
.enabled
&&
63 !sp
->fs
->info
.uses_kill
&&
64 !sp
->fs
->info
.writes_z
;
66 /* build up the pipeline in reverse order... */
68 sp
->quad
.first
= sp
->quad
.output
;
70 if (sp
->blend
->colormask
!= 0xf) {
71 sp_push_quad_first( sp
, sp
->quad
.colormask
);
74 if (sp
->blend
->blend_enable
||
75 sp
->blend
->logicop_enable
) {
76 sp_push_quad_first( sp
, sp
->quad
.blend
);
79 if (sp
->framebuffer
.num_cbufs
== 1) {
80 /* the usual case: write to exactly one colorbuf */
84 /* insert bufloop stage */
85 sp_push_quad_first( sp
, sp
->quad
.bufloop
);
88 if (sp
->depth_stencil
->depth
.occlusion_count
) {
89 sp_push_quad_first( sp
, sp
->quad
.occlusion
);
92 if (sp
->rasterizer
->poly_smooth
||
93 sp
->rasterizer
->line_smooth
||
94 sp
->rasterizer
->point_smooth
) {
95 sp_push_quad_first( sp
, sp
->quad
.coverage
);
98 if (!early_depth_test
) {
99 sp_build_depth_stencil( sp
);
102 if (sp
->depth_stencil
->alpha
.enabled
) {
103 sp_push_quad_first( sp
, sp
->quad
.alpha_test
);
106 /* XXX always enable shader? */
108 sp_push_quad_first( sp
, sp
->quad
.shade
);
111 if (early_depth_test
) {
112 sp_build_depth_stencil( sp
);
113 sp_push_quad_first( sp
, sp
->quad
.earlyz
);
116 #if !USE_DRAW_STAGE_PSTIPPLE
117 if (sp
->rasterizer
->poly_stipple_enable
) {
118 sp_push_quad_first( sp
, sp
->quad
.polygon_stipple
);