1 /**************************************************************************
3 * Copyright 2003 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 **************************************************************************/
28 #include "util/u_math.h"
29 #include "util/u_memory.h"
30 #include "pipe/p_shader_tokens.h"
31 #include "draw/draw_context.h"
32 #include "draw/draw_vertex.h"
33 #include "draw/draw_private.h"
34 #include "sp_context.h"
35 #include "sp_screen.h"
37 #include "sp_texture.h"
38 #include "sp_tex_tile_cache.h"
42 * Mark the current vertex layout as "invalid".
43 * We'll validate the vertex layout later, when we start to actually
44 * render a point or line or tri.
47 invalidate_vertex_layout(struct softpipe_context
*softpipe
)
49 softpipe
->vertex_info
.num_attribs
= 0;
54 * The vertex info describes how to convert the post-transformed vertices
55 * (simple float[][4]) used by the 'draw' module into vertices for
58 * This function validates the vertex layout and returns a pointer to a
62 softpipe_get_vertex_info(struct softpipe_context
*softpipe
)
64 struct vertex_info
*vinfo
= &softpipe
->vertex_info
;
66 if (vinfo
->num_attribs
== 0) {
67 /* compute vertex layout now */
68 const struct sp_fragment_shader
*spfs
= softpipe
->fs
;
69 const enum interp_mode colorInterp
70 = softpipe
->rasterizer
->flatshade
? INTERP_CONSTANT
: INTERP_LINEAR
;
71 struct vertex_info
*vinfo_vbuf
= &softpipe
->vertex_info_vbuf
;
72 const uint num
= draw_num_vs_outputs(softpipe
->draw
);
75 /* Tell draw_vbuf to simply emit the whole post-xform vertex
76 * as-is. No longer any need to try and emit draw vertex_header
79 vinfo_vbuf
->num_attribs
= 0;
80 for (i
= 0; i
< num
; i
++) {
81 draw_emit_vertex_attr(vinfo_vbuf
, EMIT_4F
, INTERP_PERSPECTIVE
, i
);
83 draw_compute_vertex_size(vinfo_vbuf
);
86 * Loop over fragment shader inputs, searching for the matching output
87 * from the vertex shader.
89 vinfo
->num_attribs
= 0;
90 for (i
= 0; i
< spfs
->info
.num_inputs
; i
++) {
92 enum interp_mode interp
;
94 switch (spfs
->info
.input_interpolate
[i
]) {
95 case TGSI_INTERPOLATE_CONSTANT
:
96 interp
= INTERP_CONSTANT
;
98 case TGSI_INTERPOLATE_LINEAR
:
99 interp
= INTERP_LINEAR
;
101 case TGSI_INTERPOLATE_PERSPECTIVE
:
102 interp
= INTERP_PERSPECTIVE
;
106 interp
= INTERP_LINEAR
;
109 switch (spfs
->info
.input_semantic_name
[i
]) {
110 case TGSI_SEMANTIC_POSITION
:
111 src
= draw_find_vs_output(softpipe
->draw
,
112 TGSI_SEMANTIC_POSITION
, 0);
113 draw_emit_vertex_attr(vinfo
, EMIT_4F
, INTERP_POS
, src
);
116 case TGSI_SEMANTIC_COLOR
:
117 src
= draw_find_vs_output(softpipe
->draw
, TGSI_SEMANTIC_COLOR
,
118 spfs
->info
.input_semantic_index
[i
]);
119 draw_emit_vertex_attr(vinfo
, EMIT_4F
, colorInterp
, src
);
122 case TGSI_SEMANTIC_FOG
:
123 src
= draw_find_vs_output(softpipe
->draw
, TGSI_SEMANTIC_FOG
, 0);
124 draw_emit_vertex_attr(vinfo
, EMIT_4F
, interp
, src
);
127 case TGSI_SEMANTIC_GENERIC
:
128 case TGSI_SEMANTIC_FACE
:
129 /* this includes texcoords and varying vars */
130 src
= draw_find_vs_output(softpipe
->draw
, TGSI_SEMANTIC_GENERIC
,
131 spfs
->info
.input_semantic_index
[i
]);
132 draw_emit_vertex_attr(vinfo
, EMIT_4F
, interp
, src
);
140 softpipe
->psize_slot
= draw_find_vs_output(softpipe
->draw
,
141 TGSI_SEMANTIC_PSIZE
, 0);
142 if (softpipe
->psize_slot
> 0) {
143 draw_emit_vertex_attr(vinfo
, EMIT_4F
, INTERP_CONSTANT
,
144 softpipe
->psize_slot
);
147 draw_compute_vertex_size(vinfo
);
155 * Called from vbuf module.
157 * Note that there's actually two different vertex layouts in softpipe.
159 * The normal one is computed in softpipe_get_vertex_info() above and is
160 * used by the point/line/tri "setup" code.
162 * The other one (this one) is only used by the vbuf module (which is
163 * not normally used by default but used in testing). For the vbuf module,
164 * we basically want to pass-through the draw module's vertex layout as-is.
165 * When the softpipe vbuf code begins drawing, the normal vertex layout
166 * will come into play again.
169 softpipe_get_vbuf_vertex_info(struct softpipe_context
*softpipe
)
171 (void) softpipe_get_vertex_info(softpipe
);
172 return &softpipe
->vertex_info_vbuf
;
177 * Recompute cliprect from scissor bounds, scissor enable and surface size.
180 compute_cliprect(struct softpipe_context
*sp
)
182 /* SP_NEW_FRAMEBUFFER
184 uint surfWidth
= sp
->framebuffer
.width
;
185 uint surfHeight
= sp
->framebuffer
.height
;
189 if (sp
->rasterizer
->scissor
) {
193 * clip to scissor rect:
195 sp
->cliprect
.minx
= MAX2(sp
->scissor
.minx
, 0);
196 sp
->cliprect
.miny
= MAX2(sp
->scissor
.miny
, 0);
197 sp
->cliprect
.maxx
= MIN2(sp
->scissor
.maxx
, surfWidth
);
198 sp
->cliprect
.maxy
= MIN2(sp
->scissor
.maxy
, surfHeight
);
201 /* clip to surface bounds */
202 sp
->cliprect
.minx
= 0;
203 sp
->cliprect
.miny
= 0;
204 sp
->cliprect
.maxx
= surfWidth
;
205 sp
->cliprect
.maxy
= surfHeight
;
211 update_tgsi_samplers( struct softpipe_context
*softpipe
)
215 softpipe_reset_sampler_varients( softpipe
);
217 for (i
= 0; i
< PIPE_MAX_SAMPLERS
; i
++) {
218 struct softpipe_tex_tile_cache
*tc
= softpipe
->tex_cache
[i
];
220 struct softpipe_texture
*spt
= softpipe_texture(tc
->texture
);
221 if (spt
->timestamp
!= tc
->timestamp
) {
222 sp_tex_tile_cache_validate_texture( tc
);
224 _debug_printf("INV %d %d\n", tc->timestamp, spt->timestamp);
226 tc
->timestamp
= spt
->timestamp
;
233 /* Hopefully this will remain quite simple, otherwise need to pull in
234 * something like the state tracker mechanism.
236 void softpipe_update_derived( struct softpipe_context
*softpipe
)
238 struct softpipe_screen
*sp_screen
= softpipe_screen(softpipe
->pipe
.screen
);
240 /* Check for updated textures.
242 if (softpipe
->tex_timestamp
!= sp_screen
->timestamp
) {
243 softpipe
->tex_timestamp
= sp_screen
->timestamp
;
244 softpipe
->dirty
|= SP_NEW_TEXTURE
;
247 if (softpipe
->dirty
& (SP_NEW_SAMPLER
|
251 update_tgsi_samplers( softpipe
);
253 if (softpipe
->dirty
& (SP_NEW_RASTERIZER
|
256 invalidate_vertex_layout( softpipe
);
258 if (softpipe
->dirty
& (SP_NEW_SCISSOR
|
261 compute_cliprect(softpipe
);
263 if (softpipe
->dirty
& (SP_NEW_BLEND
|
264 SP_NEW_DEPTH_STENCIL_ALPHA
|
267 sp_build_quad_pipeline(softpipe
);