2 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
3 * Copyright 2009 Marek Olšák <maraeo@gmail.com>
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
22 * USE OR OTHER DEALINGS IN THE SOFTWARE. */
24 #include "draw/draw_context.h"
26 #include "util/u_math.h"
27 #include "util/u_memory.h"
29 #include "r300_context.h"
31 #include "r300_screen.h"
32 #include "r300_shader_semantics.h"
33 #include "r300_state_derived.h"
34 #include "r300_state_inlines.h"
37 /* r300_state_derived: Various bits of state which are dependent upon
38 * currently bound CSO data. */
40 static void r300_draw_emit_attrib(struct r300_context
* r300
,
41 enum attrib_emit emit
,
42 enum interp_mode interp
,
45 struct r300_vertex_shader
* vs
= r300
->vs_state
.state
;
46 struct tgsi_shader_info
* info
= &vs
->info
;
49 output
= draw_find_shader_output(r300
->draw
,
50 info
->output_semantic_name
[index
],
51 info
->output_semantic_index
[index
]);
52 draw_emit_vertex_attr(&r300
->vertex_info
, emit
, interp
, output
);
55 static void r300_draw_emit_all_attribs(struct r300_context
* r300
)
57 struct r300_vertex_shader
* vs
= r300
->vs_state
.state
;
58 struct r300_shader_semantics
* vs_outputs
= &vs
->outputs
;
62 if (vs_outputs
->pos
!= ATTR_UNUSED
) {
63 r300_draw_emit_attrib(r300
, EMIT_4F
, INTERP_PERSPECTIVE
,
70 if (vs_outputs
->psize
!= ATTR_UNUSED
) {
71 r300_draw_emit_attrib(r300
, EMIT_1F_PSIZE
, INTERP_POS
,
76 for (i
= 0; i
< ATTR_COLOR_COUNT
; i
++) {
77 if (vs_outputs
->color
[i
] != ATTR_UNUSED
) {
78 r300_draw_emit_attrib(r300
, EMIT_4F
, INTERP_LINEAR
,
79 vs_outputs
->color
[i
]);
83 /* XXX Back-face colors. */
85 /* Texture coordinates. */
87 for (i
= 0; i
< ATTR_GENERIC_COUNT
; i
++) {
88 if (vs_outputs
->generic
[i
] != ATTR_UNUSED
) {
89 r300_draw_emit_attrib(r300
, EMIT_4F
, INTERP_PERSPECTIVE
,
90 vs_outputs
->generic
[i
]);
95 /* Fog coordinates. */
96 if (vs_outputs
->fog
!= ATTR_UNUSED
) {
97 r300_draw_emit_attrib(r300
, EMIT_4F
, INTERP_PERSPECTIVE
,
103 assert(gen_count
<= 8);
106 /* Update the PSC tables. */
107 /* XXX move this function into r300_state.c after TCL-bypass gets removed
108 * XXX because this one is dependent only on vertex elements. */
109 static void r300_vertex_psc(struct r300_context
* r300
)
111 struct r300_vertex_shader
* vs
= r300
->vs_state
.state
;
112 struct r300_vertex_stream_state
*vformat
=
113 (struct r300_vertex_stream_state
*)r300
->vertex_stream_state
.state
;
114 uint16_t type
, swizzle
;
115 enum pipe_format format
;
117 int identity
[16] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
120 memset(vformat
, 0, sizeof(struct r300_vertex_stream_state
));
122 /* If TCL is bypassed, map vertex streams to equivalent VS output
124 if (r300
->tcl_bypass
) {
125 stream_tab
= vs
->stream_loc_notcl
;
127 stream_tab
= identity
;
130 /* Vertex shaders have no semantics on their inputs,
131 * so PSC should just route stuff based on the vertex elements,
132 * and not on attrib information. */
133 DBG(r300
, DBG_DRAW
, "r300: vs expects %d attribs, routing %d elements"
136 r300
->vertex_element_count
);
138 for (i
= 0; i
< r300
->vertex_element_count
; i
++) {
139 format
= r300
->vertex_element
[i
].src_format
;
141 type
= r300_translate_vertex_data_type(format
) |
142 (stream_tab
[i
] << R300_DST_VEC_LOC_SHIFT
);
143 swizzle
= r300_translate_vertex_data_swizzle(format
);
146 vformat
->vap_prog_stream_cntl
[i
>> 1] |= type
<< 16;
147 vformat
->vap_prog_stream_cntl_ext
[i
>> 1] |= swizzle
<< 16;
149 vformat
->vap_prog_stream_cntl
[i
>> 1] |= type
;
150 vformat
->vap_prog_stream_cntl_ext
[i
>> 1] |= swizzle
;
156 /* Set the last vector in the PSC. */
160 vformat
->vap_prog_stream_cntl
[i
>> 1] |=
161 (R300_LAST_VEC
<< (i
& 1 ? 16 : 0));
163 vformat
->count
= (i
>> 1) + 1;
164 r300
->vertex_stream_state
.size
= (1 + vformat
->count
) * 2;
167 /* Update the PSC tables for SW TCL, using Draw. */
168 static void r300_swtcl_vertex_psc(struct r300_context
* r300
)
170 struct r300_vertex_shader
* vs
= r300
->vs_state
.state
;
171 struct r300_vertex_stream_state
*vformat
=
172 (struct r300_vertex_stream_state
*)r300
->vertex_stream_state
.state
;
173 struct vertex_info
* vinfo
= &r300
->vertex_info
;
174 uint16_t type
, swizzle
;
175 enum pipe_format format
;
176 unsigned i
, attrib_count
;
177 int* vs_output_tab
= vs
->stream_loc_notcl
;
179 memset(vformat
, 0, sizeof(struct r300_vertex_stream_state
));
181 /* For each Draw attribute, route it to the fragment shader according
182 * to the vs_output_tab. */
183 attrib_count
= vinfo
->num_attribs
;
184 DBG(r300
, DBG_DRAW
, "r300: attrib count: %d\n", attrib_count
);
185 for (i
= 0; i
< attrib_count
; i
++) {
186 DBG(r300
, DBG_DRAW
, "r300: attrib: offset %d, interp %d, size %d,"
187 " vs_output_tab %d\n", vinfo
->attrib
[i
].src_index
,
188 vinfo
->attrib
[i
].interp_mode
, vinfo
->attrib
[i
].emit
,
192 for (i
= 0; i
< attrib_count
; i
++) {
193 /* Make sure we have a proper destination for our attribute. */
194 assert(vs_output_tab
[i
] != -1);
196 format
= draw_translate_vinfo_format(vinfo
->attrib
[i
].emit
);
198 /* Obtain the type of data in this attribute. */
199 type
= r300_translate_vertex_data_type(format
) |
200 vs_output_tab
[i
] << R300_DST_VEC_LOC_SHIFT
;
202 /* Obtain the swizzle for this attribute. Note that the default
203 * swizzle in the hardware is not XYZW! */
204 swizzle
= r300_translate_vertex_data_swizzle(format
);
206 /* Add the attribute to the PSC table. */
208 vformat
->vap_prog_stream_cntl
[i
>> 1] |= type
<< 16;
209 vformat
->vap_prog_stream_cntl_ext
[i
>> 1] |= swizzle
<< 16;
211 vformat
->vap_prog_stream_cntl
[i
>> 1] |= type
;
212 vformat
->vap_prog_stream_cntl_ext
[i
>> 1] |= swizzle
;
216 /* Set the last vector in the PSC. */
220 vformat
->vap_prog_stream_cntl
[i
>> 1] |=
221 (R300_LAST_VEC
<< (i
& 1 ? 16 : 0));
223 vformat
->count
= (i
>> 1) + 1;
224 r300
->vertex_stream_state
.size
= (1 + vformat
->count
) * 2;
227 static void r300_rs_col(struct r300_rs_block
* rs
, int id
, int ptr
,
228 boolean swizzle_0001
)
230 rs
->ip
[id
] |= R300_RS_COL_PTR(ptr
);
232 rs
->ip
[id
] |= R300_RS_COL_FMT(R300_RS_COL_FMT_0001
);
234 rs
->ip
[id
] |= R300_RS_COL_FMT(R300_RS_COL_FMT_RGBA
);
236 rs
->inst
[id
] |= R300_RS_INST_COL_ID(id
);
239 static void r300_rs_col_write(struct r300_rs_block
* rs
, int id
, int fp_offset
)
241 rs
->inst
[id
] |= R300_RS_INST_COL_CN_WRITE
|
242 R300_RS_INST_COL_ADDR(fp_offset
);
245 static void r300_rs_tex(struct r300_rs_block
* rs
, int id
, int ptr
,
246 boolean swizzle_X001
)
249 rs
->ip
[id
] |= R300_RS_TEX_PTR(ptr
*4) |
250 R300_RS_SEL_S(R300_RS_SEL_C0
) |
251 R300_RS_SEL_T(R300_RS_SEL_K0
) |
252 R300_RS_SEL_R(R300_RS_SEL_K0
) |
253 R300_RS_SEL_Q(R300_RS_SEL_K1
);
255 rs
->ip
[id
] |= R300_RS_TEX_PTR(ptr
*4) |
256 R300_RS_SEL_S(R300_RS_SEL_C0
) |
257 R300_RS_SEL_T(R300_RS_SEL_C1
) |
258 R300_RS_SEL_R(R300_RS_SEL_C2
) |
259 R300_RS_SEL_Q(R300_RS_SEL_C3
);
261 rs
->inst
[id
] |= R300_RS_INST_TEX_ID(id
);
264 static void r300_rs_tex_write(struct r300_rs_block
* rs
, int id
, int fp_offset
)
266 rs
->inst
[id
] |= R300_RS_INST_TEX_CN_WRITE
|
267 R300_RS_INST_TEX_ADDR(fp_offset
);
270 static void r500_rs_col(struct r300_rs_block
* rs
, int id
, int ptr
,
271 boolean swizzle_0001
)
273 rs
->ip
[id
] |= R500_RS_COL_PTR(ptr
);
275 rs
->ip
[id
] |= R500_RS_COL_FMT(R300_RS_COL_FMT_0001
);
277 rs
->ip
[id
] |= R500_RS_COL_FMT(R300_RS_COL_FMT_RGBA
);
279 rs
->inst
[id
] |= R500_RS_INST_COL_ID(id
);
282 static void r500_rs_col_write(struct r300_rs_block
* rs
, int id
, int fp_offset
)
284 rs
->inst
[id
] |= R500_RS_INST_COL_CN_WRITE
|
285 R500_RS_INST_COL_ADDR(fp_offset
);
288 static void r500_rs_tex(struct r300_rs_block
* rs
, int id
, int ptr
,
289 boolean swizzle_X001
)
291 int rs_tex_comp
= ptr
*4;
294 rs
->ip
[id
] |= R500_RS_SEL_S(rs_tex_comp
) |
295 R500_RS_SEL_T(R500_RS_IP_PTR_K0
) |
296 R500_RS_SEL_R(R500_RS_IP_PTR_K0
) |
297 R500_RS_SEL_Q(R500_RS_IP_PTR_K1
);
299 rs
->ip
[id
] |= R500_RS_SEL_S(rs_tex_comp
) |
300 R500_RS_SEL_T(rs_tex_comp
+ 1) |
301 R500_RS_SEL_R(rs_tex_comp
+ 2) |
302 R500_RS_SEL_Q(rs_tex_comp
+ 3);
304 rs
->inst
[id
] |= R500_RS_INST_TEX_ID(id
);
307 static void r500_rs_tex_write(struct r300_rs_block
* rs
, int id
, int fp_offset
)
309 rs
->inst
[id
] |= R500_RS_INST_TEX_CN_WRITE
|
310 R500_RS_INST_TEX_ADDR(fp_offset
);
313 /* Set up the RS block.
315 * This is the part of the chipset that actually does the rasterization
316 * of vertices into fragments. This is also the part of the chipset that
317 * locks up if any part of it is even slightly wrong. */
318 static void r300_update_rs_block(struct r300_context
* r300
,
319 struct r300_shader_semantics
* vs_outputs
,
320 struct r300_shader_semantics
* fs_inputs
)
322 struct r300_rs_block rs
= { { 0 } };
323 int i
, col_count
= 0, tex_count
= 0, fp_offset
= 0, count
;
324 void (*rX00_rs_col
)(struct r300_rs_block
*, int, int, boolean
);
325 void (*rX00_rs_col_write
)(struct r300_rs_block
*, int, int);
326 void (*rX00_rs_tex
)(struct r300_rs_block
*, int, int, boolean
);
327 void (*rX00_rs_tex_write
)(struct r300_rs_block
*, int, int);
328 boolean any_bcolor_used
= vs_outputs
->bcolor
[0] != ATTR_UNUSED
||
329 vs_outputs
->bcolor
[1] != ATTR_UNUSED
;
331 if (r300_screen(r300
->context
.screen
)->caps
->is_r500
) {
332 rX00_rs_col
= r500_rs_col
;
333 rX00_rs_col_write
= r500_rs_col_write
;
334 rX00_rs_tex
= r500_rs_tex
;
335 rX00_rs_tex_write
= r500_rs_tex_write
;
337 rX00_rs_col
= r300_rs_col
;
338 rX00_rs_col_write
= r300_rs_col_write
;
339 rX00_rs_tex
= r300_rs_tex
;
340 rX00_rs_tex_write
= r300_rs_tex_write
;
343 /* Rasterize colors. */
344 for (i
= 0; i
< ATTR_COLOR_COUNT
; i
++) {
345 if (vs_outputs
->color
[i
] != ATTR_UNUSED
|| any_bcolor_used
||
346 vs_outputs
->color
[1] != ATTR_UNUSED
) {
347 /* Always rasterize if it's written by the VS,
348 * otherwise it locks up. */
349 rX00_rs_col(&rs
, col_count
, i
, FALSE
);
351 /* Write it to the FS input register if it's used by the FS. */
352 if (fs_inputs
->color
[i
] != ATTR_UNUSED
) {
353 rX00_rs_col_write(&rs
, col_count
, fp_offset
);
358 /* Skip the FS input register, leave it uninitialized. */
359 /* If we try to set it to (0,0,0,1), it will lock up. */
360 if (fs_inputs
->color
[i
] != ATTR_UNUSED
) {
366 /* Rasterize texture coordinates. */
367 for (i
= 0; i
< ATTR_GENERIC_COUNT
; i
++) {
368 if (vs_outputs
->generic
[i
] != ATTR_UNUSED
) {
369 /* Always rasterize if it's written by the VS,
370 * otherwise it locks up. */
371 rX00_rs_tex(&rs
, tex_count
, tex_count
, FALSE
);
373 /* Write it to the FS input register if it's used by the FS. */
374 if (fs_inputs
->generic
[i
] != ATTR_UNUSED
) {
375 rX00_rs_tex_write(&rs
, tex_count
, fp_offset
);
380 /* Skip the FS input register, leave it uninitialized. */
381 /* If we try to set it to (0,0,0,1), it will lock up. */
382 if (fs_inputs
->generic
[i
] != ATTR_UNUSED
) {
388 /* Rasterize fog coordinates. */
389 if (vs_outputs
->fog
!= ATTR_UNUSED
) {
390 /* Always rasterize if it's written by the VS,
391 * otherwise it locks up. */
392 rX00_rs_tex(&rs
, tex_count
, tex_count
, TRUE
);
394 /* Write it to the FS input register if it's used by the FS. */
395 if (fs_inputs
->fog
!= ATTR_UNUSED
) {
396 rX00_rs_tex_write(&rs
, tex_count
, fp_offset
);
401 /* Skip the FS input register, leave it uninitialized. */
402 /* If we try to set it to (0,0,0,1), it will lock up. */
403 if (fs_inputs
->fog
!= ATTR_UNUSED
) {
408 /* Rasterize WPOS. */
409 /* If the FS doesn't need it, it's not written by the VS. */
410 if (fs_inputs
->wpos
!= ATTR_UNUSED
) {
411 rX00_rs_tex(&rs
, tex_count
, tex_count
, FALSE
);
412 rX00_rs_tex_write(&rs
, tex_count
, fp_offset
);
418 /* Rasterize at least one color, or bad things happen. */
419 if (col_count
== 0 && tex_count
== 0) {
420 rX00_rs_col(&rs
, 0, 0, TRUE
);
424 rs
.count
= (tex_count
*4) | (col_count
<< R300_IC_COUNT_SHIFT
) |
427 count
= MAX3(col_count
, tex_count
, 1);
428 rs
.inst_count
= count
- 1;
430 /* Now, after all that, see if we actually need to update the state. */
431 if (memcmp(r300
->rs_block_state
.state
, &rs
, sizeof(struct r300_rs_block
))) {
432 memcpy(r300
->rs_block_state
.state
, &rs
, sizeof(struct r300_rs_block
));
433 r300
->rs_block_state
.size
= 5 + count
*2;
437 /* Update the shader-dependant states. */
438 static void r300_update_derived_shader_state(struct r300_context
* r300
)
440 struct r300_vertex_shader
* vs
= r300
->vs_state
.state
;
441 struct r300_screen
* r300screen
= r300_screen(r300
->context
.screen
);
442 struct r300_vap_output_state
*vap_out
=
443 (struct r300_vap_output_state
*)r300
->vap_output_state
.state
;
445 /* XXX Mmm, delicious hax */
446 memset(&r300
->vertex_info
, 0, sizeof(struct vertex_info
));
447 memcpy(vap_out
, vs
->hwfmt
, sizeof(uint
)*4);
449 r300_update_rs_block(r300
, &vs
->outputs
, &r300
->fs
->inputs
);
451 if (r300screen
->caps
->has_tcl
) {
452 r300_vertex_psc(r300
);
454 r300_draw_emit_all_attribs(r300
);
455 draw_compute_vertex_size(&r300
->vertex_info
);
456 r300_swtcl_vertex_psc(r300
);
460 static boolean
r300_dsa_writes_depth_stencil(struct r300_dsa_state
* dsa
)
462 /* We are interested only in the cases when a new depth or stencil value
463 * can be written and changed. */
465 /* We might optionally check for [Z func: never] and inspect the stencil
466 * state in a similar fashion, but it's not terribly important. */
467 return (dsa
->z_buffer_control
& R300_Z_WRITE_ENABLE
) ||
468 (dsa
->stencil_ref_mask
& R300_STENCILWRITEMASK_MASK
) ||
469 ((dsa
->z_buffer_control
& R500_STENCIL_REFMASK_FRONT_BACK
) &&
470 (dsa
->stencil_ref_bf
& R300_STENCILWRITEMASK_MASK
));
473 static boolean
r300_dsa_alpha_test_enabled(struct r300_dsa_state
* dsa
)
475 /* We are interested only in the cases when alpha testing can kill
477 uint32_t af
= dsa
->alpha_function
;
479 return (af
& R300_FG_ALPHA_FUNC_ENABLE
) &&
480 (af
& R300_FG_ALPHA_FUNC_ALWAYS
) != R300_FG_ALPHA_FUNC_ALWAYS
;
483 static void r300_update_ztop(struct r300_context
* r300
)
485 struct r300_ztop_state
* ztop_state
=
486 (struct r300_ztop_state
*)r300
->ztop_state
.state
;
488 /* This is important enough that I felt it warranted a comment.
490 * According to the docs, these are the conditions where ZTOP must be
492 * 1) Alpha testing enabled
493 * 2) Texture kill instructions in fragment shader
494 * 3) Chroma key culling enabled
495 * 4) W-buffering enabled
497 * The docs claim that for the first three cases, if no ZS writes happen,
498 * then ZTOP can be used.
500 * (3) will never apply since we do not support chroma-keyed operations.
501 * (4) will need to be re-examined (and this comment updated) if/when
502 * Hyper-Z becomes supported.
504 * Additionally, the following conditions require disabled ZTOP:
505 * 5) Depth writes in fragment shader
506 * 6) Outstanding occlusion queries
508 * This register causes stalls all the way from SC to CB when changed,
509 * but it is buffered on-chip so it does not hurt to write it if it has
516 if (r300_dsa_writes_depth_stencil(r300
->dsa_state
.state
) &&
517 (r300_dsa_alpha_test_enabled(r300
->dsa_state
.state
) ||/* (1) */
518 r300
->fs
->info
.uses_kill
)) { /* (2) */
519 ztop_state
->z_buffer_top
= R300_ZTOP_DISABLE
;
520 } else if (r300_fragment_shader_writes_depth(r300
->fs
)) { /* (5) */
521 ztop_state
->z_buffer_top
= R300_ZTOP_DISABLE
;
522 } else if (r300
->query_current
) { /* (6) */
523 ztop_state
->z_buffer_top
= R300_ZTOP_DISABLE
;
525 ztop_state
->z_buffer_top
= R300_ZTOP_ENABLE
;
528 r300
->ztop_state
.dirty
= TRUE
;
531 static void r300_merge_textures_and_samplers(struct r300_context
* r300
)
533 struct r300_textures_state
*state
=
534 (struct r300_textures_state
*)r300
->textures_state
.state
;
535 struct r300_texture_sampler_state
*texstate
;
536 struct r300_sampler_state
*sampler
;
537 struct r300_texture
*tex
;
538 unsigned min_level
, max_level
, i
, size
;
539 unsigned count
= MIN2(state
->texture_count
, state
->sampler_count
);
541 state
->tx_enable
= 0;
544 for (i
= 0; i
< count
; i
++) {
545 if (state
->textures
[i
] && state
->sampler_states
[i
]) {
546 state
->tx_enable
|= 1 << i
;
548 tex
= state
->textures
[i
];
549 sampler
= state
->sampler_states
[i
];
551 texstate
= &state
->regs
[i
];
552 memcpy(texstate
->format
, &tex
->state
, sizeof(uint32_t)*3);
553 texstate
->filter
[0] = sampler
->filter0
;
554 texstate
->filter
[1] = sampler
->filter1
;
555 texstate
->border_color
= sampler
->border_color
;
556 texstate
->tile_config
= R300_TXO_MACRO_TILE(tex
->macrotile
) |
557 R300_TXO_MICRO_TILE(tex
->microtile
);
559 /* to emulate 1D textures through 2D ones correctly */
560 if (tex
->tex
.target
== PIPE_TEXTURE_1D
) {
561 texstate
->filter
[0] &= ~R300_TX_WRAP_T_MASK
;
562 texstate
->filter
[0] |= R300_TX_WRAP_T(R300_TX_CLAMP_TO_EDGE
);
566 /* NPOT textures don't support mip filter, unfortunately.
567 * This prevents incorrect rendering. */
568 texstate
->filter
[0] &= ~R300_TX_MIN_FILTER_MIP_MASK
;
570 /* determine min/max levels */
571 /* the MAX_MIP level is the largest (finest) one */
572 max_level
= MIN2(sampler
->max_lod
, tex
->tex
.last_level
);
573 min_level
= MIN2(sampler
->min_lod
, max_level
);
574 texstate
->format
[0] |= R300_TX_NUM_LEVELS(max_level
);
575 texstate
->filter
[0] |= R300_TX_MAX_MIP_LEVEL(min_level
);
578 texstate
->filter
[0] |= i
<< 28;
585 r300
->textures_state
.size
= size
;
588 void r300_update_derived_state(struct r300_context
* r300
)
590 if (r300
->rs_block_state
.dirty
||
591 r300
->vertex_stream_state
.dirty
|| /* XXX put updating this state out of this file */
592 r300
->rs_state
.dirty
) { /* XXX and remove this one (tcl_bypass dependency) */
593 r300_update_derived_shader_state(r300
);
596 if (r300
->textures_state
.dirty
) {
597 r300_merge_textures_and_samplers(r300
);
600 r300_update_ztop(r300
);