1 /**************************************************************************
3 * Copyright 2008 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 * Polygon stipple stage: implement polygon stipple with texture map and
30 * fragment program. The fragment program samples the texture using the
31 * fragment window coordinate register and does a fragment kill for the
32 * stipple-failing fragments.
38 #include "pipe/p_context.h"
39 #include "pipe/p_defines.h"
40 #include "pipe/p_shader_tokens.h"
41 #include "util/u_inlines.h"
43 #include "util/u_format.h"
44 #include "util/u_math.h"
45 #include "util/u_memory.h"
46 #include "util/u_sampler.h"
48 #include "tgsi/tgsi_transform.h"
49 #include "tgsi/tgsi_dump.h"
51 #include "draw_context.h"
52 #include "draw_pipe.h"
55 /** Approx number of new tokens for instructions in pstip_transform_inst() */
56 #define NUM_NEW_TOKENS 50
60 * Subclass of pipe_shader_state to carry extra fragment shader info.
62 struct pstip_fragment_shader
64 struct pipe_shader_state state
;
72 * Subclass of draw_stage
76 struct draw_stage stage
;
79 struct pipe_resource
*texture
;
80 struct pipe_sampler_view
*sampler_view
;
82 uint num_sampler_views
;
85 * Currently bound state
87 struct pstip_fragment_shader
*fs
;
89 void *samplers
[PIPE_MAX_SAMPLERS
];
90 struct pipe_sampler_view
*sampler_views
[PIPE_MAX_SAMPLERS
];
91 const struct pipe_poly_stipple
*stipple
;
95 * Driver interface/override functions
97 void * (*driver_create_fs_state
)(struct pipe_context
*,
98 const struct pipe_shader_state
*);
99 void (*driver_bind_fs_state
)(struct pipe_context
*, void *);
100 void (*driver_delete_fs_state
)(struct pipe_context
*, void *);
102 void (*driver_bind_sampler_states
)(struct pipe_context
*, unsigned, void **);
104 void (*driver_set_sampler_views
)(struct pipe_context
*,
106 struct pipe_sampler_view
**);
108 void (*driver_set_polygon_stipple
)(struct pipe_context
*,
109 const struct pipe_poly_stipple
*);
111 struct pipe_context
*pipe
;
117 * Subclass of tgsi_transform_context, used for transforming the
118 * user's fragment shader to add the extra texture sample and fragment kill
121 struct pstip_transform_context
{
122 struct tgsi_transform_context base
;
123 uint tempsUsed
; /**< bitmask */
126 uint samplersUsed
; /**< bitfield of samplers used */
127 int freeSampler
; /** an available sampler for the pstipple */
128 int texTemp
; /**< temp registers */
130 boolean firstInstruction
;
135 * TGSI declaration transform callback.
136 * Look for a free sampler, a free input attrib, and two free temp regs.
139 pstip_transform_decl(struct tgsi_transform_context
*ctx
,
140 struct tgsi_full_declaration
*decl
)
142 struct pstip_transform_context
*pctx
= (struct pstip_transform_context
*) ctx
;
144 if (decl
->Declaration
.File
== TGSI_FILE_SAMPLER
) {
146 for (i
= decl
->Range
.First
;
147 i
<= decl
->Range
.Last
; i
++) {
148 pctx
->samplersUsed
|= 1 << i
;
151 else if (decl
->Declaration
.File
== TGSI_FILE_INPUT
) {
152 pctx
->maxInput
= MAX2(pctx
->maxInput
, (int) decl
->Range
.Last
);
153 if (decl
->Semantic
.Name
== TGSI_SEMANTIC_POSITION
)
154 pctx
->wincoordInput
= (int) decl
->Range
.First
;
156 else if (decl
->Declaration
.File
== TGSI_FILE_TEMPORARY
) {
158 for (i
= decl
->Range
.First
;
159 i
<= decl
->Range
.Last
; i
++) {
160 pctx
->tempsUsed
|= (1 << i
);
164 ctx
->emit_declaration(ctx
, decl
);
169 * TGSI immediate declaration transform callback.
170 * We're just counting the number of immediates here.
173 pstip_transform_immed(struct tgsi_transform_context
*ctx
,
174 struct tgsi_full_immediate
*immed
)
176 struct pstip_transform_context
*pctx
= (struct pstip_transform_context
*) ctx
;
177 ctx
->emit_immediate(ctx
, immed
); /* emit to output shader */
183 * Find the lowest zero bit in the given word, or -1 if bitfield is all ones.
186 free_bit(uint bitfield
)
188 return ffs(~bitfield
) - 1;
193 * TGSI instruction transform callback.
194 * Replace writes to result.color w/ a temp reg.
195 * Upon END instruction, insert texture sampling code for antialiasing.
198 pstip_transform_inst(struct tgsi_transform_context
*ctx
,
199 struct tgsi_full_instruction
*inst
)
201 struct pstip_transform_context
*pctx
= (struct pstip_transform_context
*) ctx
;
203 if (pctx
->firstInstruction
) {
204 /* emit our new declarations before the first instruction */
206 struct tgsi_full_declaration decl
;
207 struct tgsi_full_instruction newInst
;
211 /* find free sampler */
212 pctx
->freeSampler
= free_bit(pctx
->samplersUsed
);
213 if (pctx
->freeSampler
>= PIPE_MAX_SAMPLERS
)
214 pctx
->freeSampler
= PIPE_MAX_SAMPLERS
- 1;
216 if (pctx
->wincoordInput
< 0)
217 wincoordInput
= pctx
->maxInput
+ 1;
219 wincoordInput
= pctx
->wincoordInput
;
221 /* find one free temp reg */
222 for (i
= 0; i
< 32; i
++) {
223 if ((pctx
->tempsUsed
& (1 << i
)) == 0) {
224 /* found a free temp */
225 if (pctx
->texTemp
< 0)
231 assert(pctx
->texTemp
>= 0);
233 if (pctx
->wincoordInput
< 0) {
234 /* declare new position input reg */
235 decl
= tgsi_default_full_declaration();
236 decl
.Declaration
.File
= TGSI_FILE_INPUT
;
237 decl
.Declaration
.Interpolate
= 1;
238 decl
.Declaration
.Semantic
= 1;
239 decl
.Semantic
.Name
= TGSI_SEMANTIC_POSITION
;
240 decl
.Semantic
.Index
= 0;
242 decl
.Range
.Last
= wincoordInput
;
243 decl
.Interp
.Interpolate
= TGSI_INTERPOLATE_LINEAR
; /* XXX? */
244 ctx
->emit_declaration(ctx
, &decl
);
247 /* declare new sampler */
248 decl
= tgsi_default_full_declaration();
249 decl
.Declaration
.File
= TGSI_FILE_SAMPLER
;
251 decl
.Range
.Last
= pctx
->freeSampler
;
252 ctx
->emit_declaration(ctx
, &decl
);
254 /* declare new temp regs */
255 decl
= tgsi_default_full_declaration();
256 decl
.Declaration
.File
= TGSI_FILE_TEMPORARY
;
258 decl
.Range
.Last
= pctx
->texTemp
;
259 ctx
->emit_declaration(ctx
, &decl
);
261 /* emit immediate = {1/32, 1/32, 1, 1}
262 * The index/position of this immediate will be pctx->numImmed
265 static const float value
[4] = { 1.0/32, 1.0/32, 1.0, 1.0 };
266 struct tgsi_full_immediate immed
;
268 immed
= tgsi_default_full_immediate();
269 immed
.Immediate
.NrTokens
= 1 + size
; /* one for the token itself */
270 immed
.u
[0].Float
= value
[0];
271 immed
.u
[1].Float
= value
[1];
272 immed
.u
[2].Float
= value
[2];
273 immed
.u
[3].Float
= value
[3];
274 ctx
->emit_immediate(ctx
, &immed
);
277 pctx
->firstInstruction
= FALSE
;
281 * Insert new MUL/TEX/KILP instructions at start of program
282 * Take gl_FragCoord, divide by 32 (stipple size), sample the
283 * texture and kill fragment if needed.
285 * We'd like to use non-normalized texcoords to index into a RECT
286 * texture, but we can only use GL_REPEAT wrap mode with normalized
290 /* MUL texTemp, INPUT[wincoord], 1/32; */
291 newInst
= tgsi_default_full_instruction();
292 newInst
.Instruction
.Opcode
= TGSI_OPCODE_MUL
;
293 newInst
.Instruction
.NumDstRegs
= 1;
294 newInst
.Dst
[0].Register
.File
= TGSI_FILE_TEMPORARY
;
295 newInst
.Dst
[0].Register
.Index
= pctx
->texTemp
;
296 newInst
.Instruction
.NumSrcRegs
= 2;
297 newInst
.Src
[0].Register
.File
= TGSI_FILE_INPUT
;
298 newInst
.Src
[0].Register
.Index
= wincoordInput
;
299 newInst
.Src
[1].Register
.File
= TGSI_FILE_IMMEDIATE
;
300 newInst
.Src
[1].Register
.Index
= pctx
->numImmed
;
301 ctx
->emit_instruction(ctx
, &newInst
);
303 /* TEX texTemp, texTemp, sampler; */
304 newInst
= tgsi_default_full_instruction();
305 newInst
.Instruction
.Opcode
= TGSI_OPCODE_TEX
;
306 newInst
.Instruction
.NumDstRegs
= 1;
307 newInst
.Dst
[0].Register
.File
= TGSI_FILE_TEMPORARY
;
308 newInst
.Dst
[0].Register
.Index
= pctx
->texTemp
;
309 newInst
.Instruction
.NumSrcRegs
= 2;
310 newInst
.Instruction
.Texture
= TRUE
;
311 newInst
.Texture
.Texture
= TGSI_TEXTURE_2D
;
312 newInst
.Src
[0].Register
.File
= TGSI_FILE_TEMPORARY
;
313 newInst
.Src
[0].Register
.Index
= pctx
->texTemp
;
314 newInst
.Src
[1].Register
.File
= TGSI_FILE_SAMPLER
;
315 newInst
.Src
[1].Register
.Index
= pctx
->freeSampler
;
316 ctx
->emit_instruction(ctx
, &newInst
);
318 /* KIL -texTemp; # if -texTemp < 0, KILL fragment */
319 newInst
= tgsi_default_full_instruction();
320 newInst
.Instruction
.Opcode
= TGSI_OPCODE_KIL
;
321 newInst
.Instruction
.NumDstRegs
= 0;
322 newInst
.Instruction
.NumSrcRegs
= 1;
323 newInst
.Src
[0].Register
.File
= TGSI_FILE_TEMPORARY
;
324 newInst
.Src
[0].Register
.Index
= pctx
->texTemp
;
325 newInst
.Src
[0].Register
.Negate
= 1;
326 ctx
->emit_instruction(ctx
, &newInst
);
329 /* emit this instruction */
330 ctx
->emit_instruction(ctx
, inst
);
335 * Generate the frag shader we'll use for doing polygon stipple.
336 * This will be the user's shader prefixed with a TEX and KIL instruction.
339 generate_pstip_fs(struct pstip_stage
*pstip
)
341 const struct pipe_shader_state
*orig_fs
= &pstip
->fs
->state
;
342 /*struct draw_context *draw = pstip->stage.draw;*/
343 struct pipe_shader_state pstip_fs
;
344 struct pstip_transform_context transform
;
345 const uint newLen
= tgsi_num_tokens(orig_fs
->tokens
) + NUM_NEW_TOKENS
;
347 pstip_fs
= *orig_fs
; /* copy to init */
348 pstip_fs
.tokens
= tgsi_alloc_tokens(newLen
);
349 if (pstip_fs
.tokens
== NULL
)
352 memset(&transform
, 0, sizeof(transform
));
353 transform
.wincoordInput
= -1;
354 transform
.maxInput
= -1;
355 transform
.texTemp
= -1;
356 transform
.firstInstruction
= TRUE
;
357 transform
.base
.transform_instruction
= pstip_transform_inst
;
358 transform
.base
.transform_declaration
= pstip_transform_decl
;
359 transform
.base
.transform_immediate
= pstip_transform_immed
;
361 tgsi_transform_shader(orig_fs
->tokens
,
362 (struct tgsi_token
*) pstip_fs
.tokens
,
363 newLen
, &transform
.base
);
366 tgsi_dump(orig_fs
->tokens
, 0);
367 tgsi_dump(pstip_fs
.tokens
, 0);
372 pstip
->fs
->sampler_unit
= transform
.freeSampler
;
373 assert(pstip
->fs
->sampler_unit
< PIPE_MAX_SAMPLERS
);
375 pstip
->fs
->pstip_fs
= pstip
->driver_create_fs_state(pstip
->pipe
, &pstip_fs
);
377 FREE((void *)pstip_fs
.tokens
);
379 if (!pstip
->fs
->pstip_fs
)
387 * Load texture image with current stipple pattern.
390 pstip_update_texture(struct pstip_stage
*pstip
)
392 static const uint bit31
= 1 << 31;
393 struct pipe_context
*pipe
= pstip
->pipe
;
394 struct pipe_transfer
*transfer
;
395 const uint
*stipple
= pstip
->state
.stipple
->stipple
;
399 data
= pipe_transfer_map(pipe
, pstip
->texture
, 0, 0,
400 PIPE_TRANSFER_WRITE
, 0, 0, 32, 32, &transfer
);
403 * Load alpha texture.
404 * Note: 0 means keep the fragment, 255 means kill it.
405 * We'll negate the texel value and use KILP which kills if value
408 for (i
= 0; i
< 32; i
++) {
409 for (j
= 0; j
< 32; j
++) {
410 if (stipple
[i
] & (bit31
>> j
)) {
412 data
[i
* transfer
->stride
+ j
] = 0;
416 data
[i
* transfer
->stride
+ j
] = 255;
422 pipe_transfer_unmap(pipe
, transfer
);
427 * Create the texture map we'll use for stippling.
430 pstip_create_texture(struct pstip_stage
*pstip
)
432 struct pipe_context
*pipe
= pstip
->pipe
;
433 struct pipe_screen
*screen
= pipe
->screen
;
434 struct pipe_resource texTemp
;
435 struct pipe_sampler_view viewTempl
;
437 memset(&texTemp
, 0, sizeof(texTemp
));
438 texTemp
.target
= PIPE_TEXTURE_2D
;
439 texTemp
.format
= PIPE_FORMAT_A8_UNORM
; /* XXX verify supported by driver! */
440 texTemp
.last_level
= 0;
442 texTemp
.height0
= 32;
444 texTemp
.array_size
= 1;
445 texTemp
.bind
= PIPE_BIND_SAMPLER_VIEW
;
447 pstip
->texture
= screen
->resource_create(screen
, &texTemp
);
448 if (pstip
->texture
== NULL
)
451 u_sampler_view_default_template(&viewTempl
,
453 pstip
->texture
->format
);
454 pstip
->sampler_view
= pipe
->create_sampler_view(pipe
,
457 if (!pstip
->sampler_view
) {
466 * Create the sampler CSO that'll be used for stippling.
469 pstip_create_sampler(struct pstip_stage
*pstip
)
471 struct pipe_sampler_state sampler
;
472 struct pipe_context
*pipe
= pstip
->pipe
;
474 memset(&sampler
, 0, sizeof(sampler
));
475 sampler
.wrap_s
= PIPE_TEX_WRAP_REPEAT
;
476 sampler
.wrap_t
= PIPE_TEX_WRAP_REPEAT
;
477 sampler
.wrap_r
= PIPE_TEX_WRAP_REPEAT
;
478 sampler
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
479 sampler
.min_img_filter
= PIPE_TEX_FILTER_NEAREST
;
480 sampler
.mag_img_filter
= PIPE_TEX_FILTER_NEAREST
;
481 sampler
.normalized_coords
= 1;
482 sampler
.min_lod
= 0.0f
;
483 sampler
.max_lod
= 0.0f
;
485 pstip
->sampler_cso
= pipe
->create_sampler_state(pipe
, &sampler
);
486 if (pstip
->sampler_cso
== NULL
)
494 * When we're about to draw our first stipple polygon in a batch, this function
495 * is called to tell the driver to bind our modified fragment shader.
498 bind_pstip_fragment_shader(struct pstip_stage
*pstip
)
500 struct draw_context
*draw
= pstip
->stage
.draw
;
501 if (!pstip
->fs
->pstip_fs
&&
502 !generate_pstip_fs(pstip
))
505 draw
->suspend_flushing
= TRUE
;
506 pstip
->driver_bind_fs_state(pstip
->pipe
, pstip
->fs
->pstip_fs
);
507 draw
->suspend_flushing
= FALSE
;
512 static INLINE
struct pstip_stage
*
513 pstip_stage( struct draw_stage
*stage
)
515 return (struct pstip_stage
*) stage
;
520 pstip_first_tri(struct draw_stage
*stage
, struct prim_header
*header
)
522 struct pstip_stage
*pstip
= pstip_stage(stage
);
523 struct pipe_context
*pipe
= pstip
->pipe
;
524 struct draw_context
*draw
= stage
->draw
;
527 assert(stage
->draw
->rasterizer
->poly_stipple_enable
);
529 /* bind our fragprog */
530 if (!bind_pstip_fragment_shader(pstip
)) {
531 stage
->tri
= draw_pipe_passthrough_tri
;
532 stage
->tri(stage
, header
);
537 /* how many samplers? */
538 /* we'll use sampler/texture[pstip->sampler_unit] for the stipple */
539 num_samplers
= MAX2(pstip
->num_sampler_views
, pstip
->num_samplers
);
540 num_samplers
= MAX2(num_samplers
, pstip
->fs
->sampler_unit
+ 1);
542 /* plug in our sampler, texture */
543 pstip
->state
.samplers
[pstip
->fs
->sampler_unit
] = pstip
->sampler_cso
;
544 pipe_sampler_view_reference(&pstip
->state
.sampler_views
[pstip
->fs
->sampler_unit
],
545 pstip
->sampler_view
);
547 assert(num_samplers
<= PIPE_MAX_SAMPLERS
);
549 draw
->suspend_flushing
= TRUE
;
550 pstip
->driver_bind_sampler_states(pipe
, num_samplers
, pstip
->state
.samplers
);
551 pstip
->driver_set_sampler_views(pipe
, num_samplers
, pstip
->state
.sampler_views
);
552 draw
->suspend_flushing
= FALSE
;
554 /* now really draw first triangle */
555 stage
->tri
= draw_pipe_passthrough_tri
;
556 stage
->tri(stage
, header
);
561 pstip_flush(struct draw_stage
*stage
, unsigned flags
)
563 struct draw_context
*draw
= stage
->draw
;
564 struct pstip_stage
*pstip
= pstip_stage(stage
);
565 struct pipe_context
*pipe
= pstip
->pipe
;
567 stage
->tri
= pstip_first_tri
;
568 stage
->next
->flush( stage
->next
, flags
);
570 /* restore original frag shader, texture, sampler state */
571 draw
->suspend_flushing
= TRUE
;
572 pstip
->driver_bind_fs_state(pipe
, pstip
->fs
? pstip
->fs
->driver_fs
: NULL
);
573 pstip
->driver_bind_sampler_states(pipe
, pstip
->num_samplers
,
574 pstip
->state
.samplers
);
575 pstip
->driver_set_sampler_views(pipe
,
576 pstip
->num_sampler_views
,
577 pstip
->state
.sampler_views
);
578 draw
->suspend_flushing
= FALSE
;
583 pstip_reset_stipple_counter(struct draw_stage
*stage
)
585 stage
->next
->reset_stipple_counter( stage
->next
);
590 pstip_destroy(struct draw_stage
*stage
)
592 struct pstip_stage
*pstip
= pstip_stage(stage
);
595 for (i
= 0; i
< PIPE_MAX_SAMPLERS
; i
++) {
596 pipe_sampler_view_reference(&pstip
->state
.sampler_views
[i
], NULL
);
599 pstip
->pipe
->delete_sampler_state(pstip
->pipe
, pstip
->sampler_cso
);
601 pipe_resource_reference(&pstip
->texture
, NULL
);
603 if (pstip
->sampler_view
) {
604 pipe_sampler_view_reference(&pstip
->sampler_view
, NULL
);
607 draw_free_temp_verts( stage
);
612 /** Create a new polygon stipple drawing stage object */
613 static struct pstip_stage
*
614 draw_pstip_stage(struct draw_context
*draw
, struct pipe_context
*pipe
)
616 struct pstip_stage
*pstip
= CALLOC_STRUCT(pstip_stage
);
622 pstip
->stage
.draw
= draw
;
623 pstip
->stage
.name
= "pstip";
624 pstip
->stage
.next
= NULL
;
625 pstip
->stage
.point
= draw_pipe_passthrough_point
;
626 pstip
->stage
.line
= draw_pipe_passthrough_line
;
627 pstip
->stage
.tri
= pstip_first_tri
;
628 pstip
->stage
.flush
= pstip_flush
;
629 pstip
->stage
.reset_stipple_counter
= pstip_reset_stipple_counter
;
630 pstip
->stage
.destroy
= pstip_destroy
;
632 if (!draw_alloc_temp_verts( &pstip
->stage
, 8 ))
639 pstip
->stage
.destroy( &pstip
->stage
);
645 static struct pstip_stage
*
646 pstip_stage_from_pipe(struct pipe_context
*pipe
)
648 struct draw_context
*draw
= (struct draw_context
*) pipe
->draw
;
649 return pstip_stage(draw
->pipeline
.pstipple
);
654 * This function overrides the driver's create_fs_state() function and
655 * will typically be called by the state tracker.
658 pstip_create_fs_state(struct pipe_context
*pipe
,
659 const struct pipe_shader_state
*fs
)
661 struct pstip_stage
*pstip
= pstip_stage_from_pipe(pipe
);
662 struct pstip_fragment_shader
*pstipfs
= CALLOC_STRUCT(pstip_fragment_shader
);
665 pstipfs
->state
= *fs
;
668 pstipfs
->driver_fs
= pstip
->driver_create_fs_state(pstip
->pipe
, fs
);
676 pstip_bind_fs_state(struct pipe_context
*pipe
, void *fs
)
678 struct pstip_stage
*pstip
= pstip_stage_from_pipe(pipe
);
679 struct pstip_fragment_shader
*pstipfs
= (struct pstip_fragment_shader
*) fs
;
683 pstip
->driver_bind_fs_state(pstip
->pipe
,
684 (pstipfs
? pstipfs
->driver_fs
: NULL
));
689 pstip_delete_fs_state(struct pipe_context
*pipe
, void *fs
)
691 struct pstip_stage
*pstip
= pstip_stage_from_pipe(pipe
);
692 struct pstip_fragment_shader
*pstipfs
= (struct pstip_fragment_shader
*) fs
;
694 pstip
->driver_delete_fs_state(pstip
->pipe
, pstipfs
->driver_fs
);
696 if (pstipfs
->pstip_fs
)
697 pstip
->driver_delete_fs_state(pstip
->pipe
, pstipfs
->pstip_fs
);
704 pstip_bind_sampler_states(struct pipe_context
*pipe
,
705 unsigned num
, void **sampler
)
707 struct pstip_stage
*pstip
= pstip_stage_from_pipe(pipe
);
711 memcpy(pstip
->state
.samplers
, sampler
, num
* sizeof(void *));
712 for (i
= num
; i
< PIPE_MAX_SAMPLERS
; i
++) {
713 pstip
->state
.samplers
[i
] = NULL
;
716 pstip
->num_samplers
= num
;
718 pstip
->driver_bind_sampler_states(pstip
->pipe
, num
, sampler
);
723 pstip_set_sampler_views(struct pipe_context
*pipe
,
725 struct pipe_sampler_view
**views
)
727 struct pstip_stage
*pstip
= pstip_stage_from_pipe(pipe
);
731 for (i
= 0; i
< num
; i
++) {
732 pipe_sampler_view_reference(&pstip
->state
.sampler_views
[i
], views
[i
]);
734 for (; i
< PIPE_MAX_SAMPLERS
; i
++) {
735 pipe_sampler_view_reference(&pstip
->state
.sampler_views
[i
], NULL
);
738 pstip
->num_sampler_views
= num
;
741 pstip
->driver_set_sampler_views(pstip
->pipe
, num
, views
);
746 pstip_set_polygon_stipple(struct pipe_context
*pipe
,
747 const struct pipe_poly_stipple
*stipple
)
749 struct pstip_stage
*pstip
= pstip_stage_from_pipe(pipe
);
752 pstip
->state
.stipple
= stipple
;
755 pstip
->driver_set_polygon_stipple(pstip
->pipe
, stipple
);
757 pstip_update_texture(pstip
);
762 * Called by drivers that want to install this polygon stipple stage
763 * into the draw module's pipeline. This will not be used if the
764 * hardware has native support for polygon stipple.
767 draw_install_pstipple_stage(struct draw_context
*draw
,
768 struct pipe_context
*pipe
)
770 struct pstip_stage
*pstip
;
772 pipe
->draw
= (void *) draw
;
775 * Create / install pgon stipple drawing / prim stage
777 pstip
= draw_pstip_stage( draw
, pipe
);
781 draw
->pipeline
.pstipple
= &pstip
->stage
;
783 /* create special texture, sampler state */
784 if (!pstip_create_texture(pstip
))
787 if (!pstip_create_sampler(pstip
))
790 /* save original driver functions */
791 pstip
->driver_create_fs_state
= pipe
->create_fs_state
;
792 pstip
->driver_bind_fs_state
= pipe
->bind_fs_state
;
793 pstip
->driver_delete_fs_state
= pipe
->delete_fs_state
;
795 pstip
->driver_bind_sampler_states
= pipe
->bind_fragment_sampler_states
;
796 pstip
->driver_set_sampler_views
= pipe
->set_fragment_sampler_views
;
797 pstip
->driver_set_polygon_stipple
= pipe
->set_polygon_stipple
;
799 /* override the driver's functions */
800 pipe
->create_fs_state
= pstip_create_fs_state
;
801 pipe
->bind_fs_state
= pstip_bind_fs_state
;
802 pipe
->delete_fs_state
= pstip_delete_fs_state
;
804 pipe
->bind_fragment_sampler_states
= pstip_bind_sampler_states
;
805 pipe
->set_fragment_sampler_views
= pstip_set_sampler_views
;
806 pipe
->set_polygon_stipple
= pstip_set_polygon_stipple
;
812 pstip
->stage
.destroy( &pstip
->stage
);