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 **************************************************************************/
30 * Keith Whitwell <keith@tungstengraphics.com>
33 #include "pipe/p_util.h"
34 #include "draw/draw_context.h"
35 #include "draw/draw_private.h"
36 #include "draw/draw_vbuf.h"
37 #include "draw/draw_vertex.h"
38 #include "draw/draw_vs.h"
39 #include "translate/translate.h"
40 #include "translate/translate_cache.h"
42 /* A first pass at incorporating vertex fetch/emit functionality into
44 struct draw_vs_varient_generic
{
45 struct draw_vs_varient base
;
47 struct pipe_viewport_state viewport
;
49 struct draw_vertex_shader
*shader
;
50 struct draw_context
*draw
;
52 /* Basic plan is to run these two translate functions before/after
53 * the vertex shader's existing run_linear() routine to simulate
54 * the inclusion of this functionality into the shader...
56 * Next will look at actually including it.
58 struct translate
*fetch
;
59 struct translate
*emit
;
61 const float (*constants
)[4];
67 static void vsvg_set_constants( struct draw_vs_varient
*varient
,
68 const float (*constants
)[4] )
70 struct draw_vs_varient_generic
*vsvg
= (struct draw_vs_varient_generic
*)varient
;
72 vsvg
->constants
= constants
;
76 static void vsvg_set_input( struct draw_vs_varient
*varient
,
81 struct draw_vs_varient_generic
*vsvg
= (struct draw_vs_varient_generic
*)varient
;
83 vsvg
->fetch
->set_buffer(vsvg
->fetch
,
90 /* Mainly for debug at this stage:
92 static void do_rhw_viewport( struct draw_vs_varient_generic
*vsvg
,
96 char *ptr
= (char *)output_buffer
;
97 const float *scale
= vsvg
->viewport
.scale
;
98 const float *trans
= vsvg
->viewport
.translate
;
99 unsigned stride
= vsvg
->base
.key
.output_stride
;
102 for (j
= 0; j
< count
; j
++, ptr
+= stride
) {
103 float *data
= (float *)ptr
;
104 float w
= 1.0f
/ data
[3];
106 data
[0] = data
[0] * w
* scale
[0] + trans
[0];
107 data
[1] = data
[1] * w
* scale
[1] + trans
[1];
108 data
[2] = data
[2] * w
* scale
[2] + trans
[2];
113 static void do_viewport( struct draw_vs_varient_generic
*vsvg
,
115 void *output_buffer
)
117 char *ptr
= (char *)output_buffer
;
118 const float *scale
= vsvg
->viewport
.scale
;
119 const float *trans
= vsvg
->viewport
.translate
;
120 unsigned stride
= vsvg
->base
.key
.output_stride
;
123 for (j
= 0; j
< count
; j
++, ptr
+= stride
) {
124 float *data
= (float *)ptr
;
126 data
[0] = data
[0] * scale
[0] + trans
[0];
127 data
[1] = data
[1] * scale
[1] + trans
[1];
128 data
[2] = data
[2] * scale
[2] + trans
[2];
133 static void vsvg_run_elts( struct draw_vs_varient
*varient
,
134 const unsigned *elts
,
138 struct draw_vs_varient_generic
*vsvg
= (struct draw_vs_varient_generic
*)varient
;
140 /* Want to do this in small batches for cache locality?
143 vsvg
->fetch
->run_elts( vsvg
->fetch
,
148 //if (!vsvg->base.vs->is_passthrough)
150 vsvg
->base
.vs
->run_linear( vsvg
->base
.vs
,
155 vsvg
->base
.key
.output_stride
,
156 vsvg
->base
.key
.output_stride
);
159 if (vsvg
->base
.key
.clip
) {
160 /* not really handling clipping, just do the rhw so we can
163 do_rhw_viewport( vsvg
,
167 else if (vsvg
->base
.key
.viewport
) {
174 //if (!vsvg->already_in_emit_format)
176 vsvg
->emit
->set_buffer( vsvg
->emit
,
179 vsvg
->base
.key
.output_stride
);
182 vsvg
->emit
->run( vsvg
->emit
,
189 static void vsvg_run_linear( struct draw_vs_varient
*varient
,
192 void *output_buffer
)
194 struct draw_vs_varient_generic
*vsvg
= (struct draw_vs_varient_generic
*)varient
;
196 //debug_printf("%s %d %d\n", __FUNCTION__, start, count);
199 vsvg
->fetch
->run( vsvg
->fetch
,
204 //if (!vsvg->base.vs->is_passthrough)
206 vsvg
->base
.vs
->run_linear( vsvg
->base
.vs
,
211 vsvg
->base
.key
.output_stride
,
212 vsvg
->base
.key
.output_stride
);
214 if (vsvg
->base
.key
.clip
) {
215 /* not really handling clipping, just do the rhw so we can
218 do_rhw_viewport( vsvg
,
222 else if (vsvg
->base
.key
.viewport
) {
228 //if (!vsvg->already_in_emit_format)
229 vsvg
->emit
->set_buffer( vsvg
->emit
,
232 vsvg
->base
.key
.output_stride
);
234 vsvg
->emit
->set_buffer( vsvg
->emit
,
236 &vsvg
->draw
->rasterizer
->point_size
,
239 vsvg
->emit
->run( vsvg
->emit
,
248 static void vsvg_set_viewport( struct draw_vs_varient
*varient
,
249 const struct pipe_viewport_state
*viewport
)
251 struct draw_vs_varient_generic
*vsvg
= (struct draw_vs_varient_generic
*)varient
;
253 vsvg
->viewport
= *viewport
;
256 static void vsvg_destroy( struct draw_vs_varient
*varient
)
262 struct draw_vs_varient
*draw_vs_varient_generic( struct draw_vertex_shader
*vs
,
263 const struct draw_vs_varient_key
*key
)
266 struct translate_key fetch
, emit
;
268 struct draw_vs_varient_generic
*vsvg
= CALLOC_STRUCT( draw_vs_varient_generic
);
272 vsvg
->base
.key
= *key
;
274 vsvg
->base
.set_input
= vsvg_set_input
;
275 vsvg
->base
.set_constants
= vsvg_set_constants
;
276 vsvg
->base
.set_viewport
= vsvg_set_viewport
;
277 vsvg
->base
.run_elts
= vsvg_run_elts
;
278 vsvg
->base
.run_linear
= vsvg_run_linear
;
279 vsvg
->base
.destroy
= vsvg_destroy
;
283 /* Build free-standing fetch and emit functions:
285 fetch
.nr_elements
= key
->nr_inputs
;
286 fetch
.output_stride
= 0;
287 for (i
= 0; i
< key
->nr_inputs
; i
++) {
288 fetch
.element
[i
].input_format
= key
->element
[i
].in
.format
;
289 fetch
.element
[i
].input_buffer
= key
->element
[i
].in
.buffer
;
290 fetch
.element
[i
].input_offset
= key
->element
[i
].in
.offset
;
291 fetch
.element
[i
].output_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
292 fetch
.element
[i
].output_offset
= fetch
.output_stride
;
293 fetch
.output_stride
+= 4 * sizeof(float);
297 emit
.nr_elements
= key
->nr_outputs
;
298 emit
.output_stride
= key
->output_stride
;
299 for (i
= 0; i
< key
->nr_outputs
; i
++) {
300 if (key
->element
[i
].out
.format
!= EMIT_1F_PSIZE
)
302 emit
.element
[i
].input_format
= PIPE_FORMAT_R32G32B32A32_FLOAT
;
303 emit
.element
[i
].input_buffer
= 0;
304 emit
.element
[i
].input_offset
= key
->element
[i
].out
.vs_output
* 4 * sizeof(float);
305 emit
.element
[i
].output_format
= draw_translate_vinfo_format(key
->element
[i
].out
.format
);
306 emit
.element
[i
].output_offset
= key
->element
[i
].out
.offset
;
309 emit
.element
[i
].input_format
= PIPE_FORMAT_R32_FLOAT
;
310 emit
.element
[i
].input_buffer
= 1;
311 emit
.element
[i
].input_offset
= 0;
312 emit
.element
[i
].output_format
= PIPE_FORMAT_R32_FLOAT
;
313 emit
.element
[i
].output_offset
= key
->element
[i
].out
.offset
;
317 vsvg
->fetch
= draw_vs_get_fetch( vs
->draw
, &fetch
);
318 vsvg
->emit
= draw_vs_get_emit( vs
->draw
, &emit
);