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[mesa.git] / src / mesa / drivers / dri / r200 / r200_tcl.c
1 /*
2 Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved.
3
4 The Weather Channel (TM) funded Tungsten Graphics to develop the
5 initial release of the Radeon 8500 driver under the XFree86 license.
6 This notice must be preserved.
7
8 Permission is hereby granted, free of charge, to any person obtaining
9 a copy of this software and associated documentation files (the
10 "Software"), to deal in the Software without restriction, including
11 without limitation the rights to use, copy, modify, merge, publish,
12 distribute, sublicense, and/or sell copies of the Software, and to
13 permit persons to whom the Software is furnished to do so, subject to
14 the following conditions:
15
16 The above copyright notice and this permission notice (including the
17 next paragraph) shall be included in all copies or substantial
18 portions of the Software.
19
20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
23 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
24 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27
28 **************************************************************************/
29
30 /*
31 * Authors:
32 * Keith Whitwell <keithw@vmware.com>
33 */
34
35 #include "main/glheader.h"
36 #include "main/imports.h"
37 #include "main/mtypes.h"
38 #include "main/enums.h"
39 #include "main/light.h"
40 #include "main/state.h"
41
42 #include "vbo/vbo.h"
43 #include "tnl/tnl.h"
44 #include "tnl/t_pipeline.h"
45
46 #include "r200_context.h"
47 #include "r200_state.h"
48 #include "r200_ioctl.h"
49 #include "r200_tcl.h"
50 #include "r200_swtcl.h"
51 #include "r200_maos.h"
52
53 #include "radeon_common_context.h"
54
55
56
57 #define HAVE_POINTS 1
58 #define HAVE_LINES 1
59 #define HAVE_LINE_LOOP 0
60 #define HAVE_LINE_STRIPS 1
61 #define HAVE_TRIANGLES 1
62 #define HAVE_TRI_STRIPS 1
63 #define HAVE_TRI_FANS 1
64 #define HAVE_QUADS 1
65 #define HAVE_QUAD_STRIPS 1
66 #define HAVE_POLYGONS 1
67 #define HAVE_ELTS 1
68
69
70 #define HW_POINTS ((!ctx->Point.SmoothFlag) ? \
71 R200_VF_PRIM_POINT_SPRITES : R200_VF_PRIM_POINTS)
72 #define HW_LINES R200_VF_PRIM_LINES
73 #define HW_LINE_LOOP 0
74 #define HW_LINE_STRIP R200_VF_PRIM_LINE_STRIP
75 #define HW_TRIANGLES R200_VF_PRIM_TRIANGLES
76 #define HW_TRIANGLE_STRIP_0 R200_VF_PRIM_TRIANGLE_STRIP
77 #define HW_TRIANGLE_STRIP_1 0
78 #define HW_TRIANGLE_FAN R200_VF_PRIM_TRIANGLE_FAN
79 #define HW_QUADS R200_VF_PRIM_QUADS
80 #define HW_QUAD_STRIP R200_VF_PRIM_QUAD_STRIP
81 #define HW_POLYGON R200_VF_PRIM_POLYGON
82
83
84 static GLboolean discrete_prim[0x10] = {
85 0, /* 0 none */
86 1, /* 1 points */
87 1, /* 2 lines */
88 0, /* 3 line_strip */
89 1, /* 4 tri_list */
90 0, /* 5 tri_fan */
91 0, /* 6 tri_strip */
92 0, /* 7 tri_w_flags */
93 1, /* 8 rect list (unused) */
94 1, /* 9 3vert point */
95 1, /* a 3vert line */
96 0, /* b point sprite */
97 0, /* c line loop */
98 1, /* d quads */
99 0, /* e quad strip */
100 0, /* f polygon */
101 };
102
103
104 #define LOCAL_VARS r200ContextPtr rmesa = R200_CONTEXT(ctx)
105 #define ELT_TYPE GLushort
106
107 #define ELT_INIT(prim, hw_prim) \
108 r200TclPrimitive( ctx, prim, hw_prim | R200_VF_PRIM_WALK_IND )
109
110 #define GET_MESA_ELTS() TNL_CONTEXT(ctx)->vb.Elts
111
112
113 /* Don't really know how many elts will fit in what's left of cmdbuf,
114 * as there is state to emit, etc:
115 */
116
117 /* Testing on isosurf shows a maximum around here. Don't know if it's
118 * the card or driver or kernel module that is causing the behaviour.
119 */
120 #define GET_MAX_HW_ELTS() 300
121
122 #define RESET_STIPPLE() do { \
123 R200_STATECHANGE( rmesa, lin ); \
124 radeonEmitState(&rmesa->radeon); \
125 } while (0)
126
127 #define AUTO_STIPPLE( mode ) do { \
128 R200_STATECHANGE( rmesa, lin ); \
129 if (mode) \
130 rmesa->hw.lin.cmd[LIN_RE_LINE_PATTERN] |= \
131 R200_LINE_PATTERN_AUTO_RESET; \
132 else \
133 rmesa->hw.lin.cmd[LIN_RE_LINE_PATTERN] &= \
134 ~R200_LINE_PATTERN_AUTO_RESET; \
135 radeonEmitState(&rmesa->radeon); \
136 } while (0)
137
138
139 #define ALLOC_ELTS(nr) r200AllocElts( rmesa, nr )
140
141 static GLushort *r200AllocElts( r200ContextPtr rmesa, GLuint nr )
142 {
143 if (rmesa->radeon.dma.flush == r200FlushElts &&
144 rmesa->tcl.elt_used + nr*2 < R200_ELT_BUF_SZ) {
145
146 GLushort *dest = (GLushort *)(rmesa->radeon.tcl.elt_dma_bo->ptr +
147 rmesa->radeon.tcl.elt_dma_offset + rmesa->tcl.elt_used);
148
149 rmesa->tcl.elt_used += nr*2;
150
151 return dest;
152 }
153 else {
154 if (rmesa->radeon.dma.flush)
155 rmesa->radeon.dma.flush( &rmesa->radeon.glCtx );
156
157 r200EmitAOS( rmesa,
158 rmesa->radeon.tcl.aos_count, 0 );
159
160 r200EmitMaxVtxIndex(rmesa, rmesa->radeon.tcl.aos[0].count);
161 return r200AllocEltsOpenEnded( rmesa, rmesa->tcl.hw_primitive, nr );
162 }
163 }
164
165
166 #define CLOSE_ELTS() \
167 do { \
168 if (0) R200_NEWPRIM( rmesa ); \
169 } \
170 while (0)
171
172
173 /* TODO: Try to extend existing primitive if both are identical,
174 * discrete and there are no intervening state changes. (Somewhat
175 * duplicates changes to DrawArrays code)
176 */
177 static void r200EmitPrim( struct gl_context *ctx,
178 GLenum prim,
179 GLuint hwprim,
180 GLuint start,
181 GLuint count)
182 {
183 r200ContextPtr rmesa = R200_CONTEXT( ctx );
184 r200TclPrimitive( ctx, prim, hwprim );
185
186 // fprintf(stderr,"Emit prim %d\n", rmesa->radeon.tcl.aos_count);
187
188 r200EmitAOS( rmesa,
189 rmesa->radeon.tcl.aos_count,
190 start );
191
192 /* Why couldn't this packet have taken an offset param?
193 */
194 r200EmitVbufPrim( rmesa,
195 rmesa->tcl.hw_primitive,
196 count - start );
197 }
198
199 #define EMIT_PRIM(ctx, prim, hwprim, start, count) do { \
200 r200EmitPrim( ctx, prim, hwprim, start, count ); \
201 (void) rmesa; } while (0)
202
203 #define MAX_CONVERSION_SIZE 40
204 /* Try & join small primitives
205 */
206 #if 0
207 #define PREFER_DISCRETE_ELT_PRIM( NR, PRIM ) 0
208 #else
209 #define PREFER_DISCRETE_ELT_PRIM( NR, PRIM ) \
210 ((NR) < 20 || \
211 ((NR) < 40 && \
212 rmesa->tcl.hw_primitive == (PRIM| \
213 R200_VF_TCL_OUTPUT_VTX_ENABLE| \
214 R200_VF_PRIM_WALK_IND)))
215 #endif
216
217 #ifdef MESA_BIG_ENDIAN
218 /* We could do without (most of) this ugliness if dest was always 32 bit word aligned... */
219 #define EMIT_ELT(dest, offset, x) do { \
220 int off = offset + ( ( (uintptr_t)dest & 0x2 ) >> 1 ); \
221 GLushort *des = (GLushort *)( (uintptr_t)dest & ~0x2 ); \
222 (des)[ off + 1 - 2 * ( off & 1 ) ] = (GLushort)(x); \
223 (void)rmesa; } while (0)
224 #else
225 #define EMIT_ELT(dest, offset, x) do { \
226 (dest)[offset] = (GLushort) (x); \
227 (void)rmesa; } while (0)
228 #endif
229
230 #define EMIT_TWO_ELTS(dest, offset, x, y) *(GLuint *)((dest)+offset) = ((y)<<16)|(x);
231
232
233
234 #define TAG(x) tcl_##x
235 #include "tnl_dd/t_dd_dmatmp2.h"
236
237 /**********************************************************************/
238 /* External entrypoints */
239 /**********************************************************************/
240
241 void r200EmitPrimitive( struct gl_context *ctx,
242 GLuint first,
243 GLuint last,
244 GLuint flags )
245 {
246 tcl_render_tab_verts[flags&PRIM_MODE_MASK]( ctx, first, last, flags );
247 }
248
249 void r200EmitEltPrimitive( struct gl_context *ctx,
250 GLuint first,
251 GLuint last,
252 GLuint flags )
253 {
254 tcl_render_tab_elts[flags&PRIM_MODE_MASK]( ctx, first, last, flags );
255 }
256
257 void r200TclPrimitive( struct gl_context *ctx,
258 GLenum prim,
259 int hw_prim )
260 {
261 r200ContextPtr rmesa = R200_CONTEXT(ctx);
262 GLuint newprim = hw_prim | R200_VF_TCL_OUTPUT_VTX_ENABLE;
263
264 radeon_prepare_render(&rmesa->radeon);
265 if (rmesa->radeon.NewGLState)
266 r200ValidateState( ctx );
267
268 if (newprim != rmesa->tcl.hw_primitive ||
269 !discrete_prim[hw_prim&0xf]) {
270 /* need to disable perspective-correct texturing for point sprites */
271 if ((prim & PRIM_MODE_MASK) == GL_POINTS && ctx->Point.PointSprite) {
272 if (rmesa->hw.set.cmd[SET_RE_CNTL] & R200_PERSPECTIVE_ENABLE) {
273 R200_STATECHANGE( rmesa, set );
274 rmesa->hw.set.cmd[SET_RE_CNTL] &= ~R200_PERSPECTIVE_ENABLE;
275 }
276 }
277 else if (!(rmesa->hw.set.cmd[SET_RE_CNTL] & R200_PERSPECTIVE_ENABLE)) {
278 R200_STATECHANGE( rmesa, set );
279 rmesa->hw.set.cmd[SET_RE_CNTL] |= R200_PERSPECTIVE_ENABLE;
280 }
281 R200_NEWPRIM( rmesa );
282 rmesa->tcl.hw_primitive = newprim;
283 }
284 }
285
286 /**
287 * Predict total emit size for next rendering operation so there is no flush in middle of rendering
288 * Prediction has to aim towards the best possible value that is worse than worst case scenario
289 */
290 static GLuint r200EnsureEmitSize( struct gl_context * ctx , GLubyte* vimap_rev )
291 {
292 r200ContextPtr rmesa = R200_CONTEXT(ctx);
293 TNLcontext *tnl = TNL_CONTEXT(ctx);
294 struct vertex_buffer *VB = &tnl->vb;
295 GLuint space_required;
296 GLuint state_size;
297 GLuint nr_aos = 0;
298 int i;
299 /* predict number of aos to emit */
300 for (i = 0; i < 15; ++i)
301 {
302 if (vimap_rev[i] != 255)
303 {
304 ++nr_aos;
305 }
306 }
307
308 {
309 /* count the prediction for state size */
310 space_required = 0;
311 state_size = radeonCountStateEmitSize( &rmesa->radeon );
312 /* vtx may be changed in r200EmitArrays so account for it if not dirty */
313 if (!rmesa->hw.vtx.dirty)
314 state_size += rmesa->hw.vtx.check(&rmesa->radeon.glCtx, &rmesa->hw.vtx);
315 /* predict size for elements */
316 for (i = 0; i < VB->PrimitiveCount; ++i)
317 {
318 if (!VB->Primitive[i].count)
319 continue;
320 /* If primitive.count is less than MAX_CONVERSION_SIZE
321 rendering code may decide convert to elts.
322 In that case we have to make pessimistic prediction.
323 and use larger of 2 paths. */
324 const GLuint elt_count =(VB->Primitive[i].count/GET_MAX_HW_ELTS() + 1);
325 const GLuint elts = ELTS_BUFSZ(nr_aos) * elt_count;
326 const GLuint index = INDEX_BUFSZ * elt_count;
327 const GLuint vbuf = VBUF_BUFSZ;
328 if ( (!VB->Elts && VB->Primitive[i].count >= MAX_CONVERSION_SIZE)
329 || vbuf > index + elts)
330 space_required += vbuf;
331 else
332 space_required += index + elts;
333 space_required += AOS_BUFSZ(nr_aos);
334 }
335 }
336
337 radeon_print(RADEON_RENDER,RADEON_VERBOSE,
338 "%s space %u, aos %d\n",
339 __func__, space_required, AOS_BUFSZ(nr_aos) );
340 /* flush the buffer in case we need more than is left. */
341 if (rcommonEnsureCmdBufSpace(&rmesa->radeon, space_required + state_size, __func__))
342 return space_required + radeonCountStateEmitSize( &rmesa->radeon );
343 else
344 return space_required + state_size;
345 }
346
347
348 /**********************************************************************/
349 /* Render pipeline stage */
350 /**********************************************************************/
351
352
353 /* TCL render.
354 */
355 static GLboolean r200_run_tcl_render( struct gl_context *ctx,
356 struct tnl_pipeline_stage *stage )
357 {
358 r200ContextPtr rmesa = R200_CONTEXT(ctx);
359 TNLcontext *tnl = TNL_CONTEXT(ctx);
360 struct vertex_buffer *VB = &tnl->vb;
361 GLuint i;
362 GLubyte *vimap_rev;
363 /* use hw fixed order for simplicity, pos 0, weight 1, normal 2, fog 3,
364 color0 - color3 4-7, texcoord0 - texcoord5 8-13, pos 1 14. Must not use
365 more than 12 of those at the same time. */
366 GLubyte map_rev_fixed[15] = {255, 255, 255, 255, 255, 255, 255, 255,
367 255, 255, 255, 255, 255, 255, 255};
368
369
370 /* TODO: separate this from the swtnl pipeline
371 */
372 if (rmesa->radeon.TclFallback)
373 return GL_TRUE; /* fallback to software t&l */
374
375 radeon_print(RADEON_RENDER, RADEON_NORMAL, "%s\n", __func__);
376
377 if (VB->Count == 0)
378 return GL_FALSE;
379
380 /* Validate state:
381 */
382 if (rmesa->radeon.NewGLState)
383 if (!r200ValidateState( ctx ))
384 return GL_TRUE; /* fallback to sw t&l */
385
386 if (!_mesa_arb_vertex_program_enabled(ctx)) {
387 /* NOTE: inputs != tnl->render_inputs - these are the untransformed
388 * inputs.
389 */
390 map_rev_fixed[0] = VERT_ATTRIB_POS;
391 /* technically there is no reason we always need VA_COLOR0. In theory
392 could disable it depending on lighting, color materials, texturing... */
393 map_rev_fixed[4] = VERT_ATTRIB_COLOR0;
394
395 if (ctx->Light.Enabled) {
396 map_rev_fixed[2] = VERT_ATTRIB_NORMAL;
397 }
398
399 /* this also enables VA_COLOR1 when using separate specular
400 lighting model, which is unnecessary.
401 FIXME: OTOH, we're missing the case where a ATI_fragment_shader accesses
402 the secondary color (if lighting is disabled). The chip seems
403 misconfigured for that though elsewhere (tcl output, might lock up) */
404 if (_mesa_need_secondary_color(ctx)) {
405 map_rev_fixed[5] = VERT_ATTRIB_COLOR1;
406 }
407
408 if ( (ctx->Fog.FogCoordinateSource == GL_FOG_COORD) && ctx->Fog.Enabled ) {
409 map_rev_fixed[3] = VERT_ATTRIB_FOG;
410 }
411
412 for (i = 0 ; i < ctx->Const.MaxTextureUnits; i++) {
413 if (ctx->Texture.Unit[i]._Current) {
414 if (rmesa->TexGenNeedNormals[i]) {
415 map_rev_fixed[2] = VERT_ATTRIB_NORMAL;
416 }
417 map_rev_fixed[8 + i] = VERT_ATTRIB_TEX0 + i;
418 }
419 }
420 vimap_rev = &map_rev_fixed[0];
421 }
422 else {
423 /* vtx_tcl_output_vtxfmt_0/1 need to match configuration of "fragment
424 part", since using some vertex interpolator later which is not in
425 out_vtxfmt0/1 will lock up. It seems to be ok to write in vertex
426 prog to a not enabled output however, so just don't mess with it.
427 We only need to change compsel. */
428 GLuint out_compsel = 0;
429 const GLbitfield64 vp_out =
430 rmesa->curr_vp_hw->mesa_program.info.outputs_written;
431
432 vimap_rev = &rmesa->curr_vp_hw->inputmap_rev[0];
433 assert(vp_out & BITFIELD64_BIT(VARYING_SLOT_POS));
434 out_compsel = R200_OUTPUT_XYZW;
435 if (vp_out & BITFIELD64_BIT(VARYING_SLOT_COL0)) {
436 out_compsel |= R200_OUTPUT_COLOR_0;
437 }
438 if (vp_out & BITFIELD64_BIT(VARYING_SLOT_COL1)) {
439 out_compsel |= R200_OUTPUT_COLOR_1;
440 }
441 if (vp_out & BITFIELD64_BIT(VARYING_SLOT_FOGC)) {
442 out_compsel |= R200_OUTPUT_DISCRETE_FOG;
443 }
444 if (vp_out & BITFIELD64_BIT(VARYING_SLOT_PSIZ)) {
445 out_compsel |= R200_OUTPUT_PT_SIZE;
446 }
447 for (i = VARYING_SLOT_TEX0; i < VARYING_SLOT_TEX6; i++) {
448 if (vp_out & BITFIELD64_BIT(i)) {
449 out_compsel |= R200_OUTPUT_TEX_0 << (i - VARYING_SLOT_TEX0);
450 }
451 }
452 if (rmesa->hw.vtx.cmd[VTX_TCL_OUTPUT_COMPSEL] != out_compsel) {
453 R200_STATECHANGE( rmesa, vtx );
454 rmesa->hw.vtx.cmd[VTX_TCL_OUTPUT_COMPSEL] = out_compsel;
455 }
456 }
457
458 /* Do the actual work:
459 */
460 radeonReleaseArrays( ctx, ~0 /* stage->changed_inputs */ );
461 GLuint emit_end = r200EnsureEmitSize( ctx, vimap_rev )
462 + rmesa->radeon.cmdbuf.cs->cdw;
463 r200EmitArrays( ctx, vimap_rev );
464
465 for (i = 0 ; i < VB->PrimitiveCount ; i++)
466 {
467 GLuint prim = _tnl_translate_prim(&VB->Primitive[i]);
468 GLuint start = VB->Primitive[i].start;
469 GLuint length = VB->Primitive[i].count;
470
471 if (!length)
472 continue;
473
474 if (VB->Elts)
475 r200EmitEltPrimitive( ctx, start, start+length, prim );
476 else
477 r200EmitPrimitive( ctx, start, start+length, prim );
478 }
479 if ( emit_end < rmesa->radeon.cmdbuf.cs->cdw )
480 WARN_ONCE("Rendering was %d commands larger than predicted size."
481 " We might overflow command buffer.\n", rmesa->radeon.cmdbuf.cs->cdw - emit_end);
482
483 return GL_FALSE; /* finished the pipe */
484 }
485
486
487
488 /* Initial state for tcl stage.
489 */
490 const struct tnl_pipeline_stage _r200_tcl_stage =
491 {
492 "r200 render",
493 NULL, /* private */
494 NULL,
495 NULL,
496 NULL,
497 r200_run_tcl_render /* run */
498 };
499
500
501
502 /**********************************************************************/
503 /* Validate state at pipeline start */
504 /**********************************************************************/
505
506
507 /*-----------------------------------------------------------------------
508 * Manage TCL fallbacks
509 */
510
511
512 static void transition_to_swtnl( struct gl_context *ctx )
513 {
514 r200ContextPtr rmesa = R200_CONTEXT(ctx);
515 TNLcontext *tnl = TNL_CONTEXT(ctx);
516
517 R200_NEWPRIM( rmesa );
518
519 r200ChooseVertexState( ctx );
520 r200ChooseRenderState( ctx );
521
522 _tnl_validate_shine_tables( ctx );
523
524 tnl->Driver.NotifyMaterialChange =
525 _tnl_validate_shine_tables;
526
527 radeonReleaseArrays( ctx, ~0 );
528
529 /* Still using the D3D based hardware-rasterizer from the radeon;
530 * need to put the card into D3D mode to make it work:
531 */
532 R200_STATECHANGE( rmesa, vap );
533 rmesa->hw.vap.cmd[VAP_SE_VAP_CNTL] &= ~(R200_VAP_TCL_ENABLE|R200_VAP_PROG_VTX_SHADER_ENABLE);
534 }
535
536 static void transition_to_hwtnl( struct gl_context *ctx )
537 {
538 r200ContextPtr rmesa = R200_CONTEXT(ctx);
539 TNLcontext *tnl = TNL_CONTEXT(ctx);
540
541 _tnl_need_projected_coords( ctx, GL_FALSE );
542
543 r200UpdateMaterial( ctx );
544
545 tnl->Driver.NotifyMaterialChange = r200UpdateMaterial;
546
547 if ( rmesa->radeon.dma.flush )
548 rmesa->radeon.dma.flush( &rmesa->radeon.glCtx );
549
550 rmesa->radeon.dma.flush = NULL;
551
552 R200_STATECHANGE( rmesa, vap );
553 rmesa->hw.vap.cmd[VAP_SE_VAP_CNTL] |= R200_VAP_TCL_ENABLE;
554 rmesa->hw.vap.cmd[VAP_SE_VAP_CNTL] &= ~R200_VAP_FORCE_W_TO_ONE;
555
556 if (_mesa_arb_vertex_program_enabled(ctx)) {
557 rmesa->hw.vap.cmd[VAP_SE_VAP_CNTL] |= R200_VAP_PROG_VTX_SHADER_ENABLE;
558 }
559
560 if ( ((rmesa->hw.ctx.cmd[CTX_PP_FOG_COLOR] & R200_FOG_USE_MASK)
561 == R200_FOG_USE_SPEC_ALPHA) &&
562 (ctx->Fog.FogCoordinateSource == GL_FOG_COORD )) {
563 R200_STATECHANGE( rmesa, ctx );
564 rmesa->hw.ctx.cmd[CTX_PP_FOG_COLOR] &= ~R200_FOG_USE_MASK;
565 rmesa->hw.ctx.cmd[CTX_PP_FOG_COLOR] |= R200_FOG_USE_VTX_FOG;
566 }
567
568 R200_STATECHANGE( rmesa, vte );
569 rmesa->hw.vte.cmd[VTE_SE_VTE_CNTL] &= ~(R200_VTX_XY_FMT|R200_VTX_Z_FMT);
570 rmesa->hw.vte.cmd[VTE_SE_VTE_CNTL] |= R200_VTX_W0_FMT;
571
572 if (R200_DEBUG & RADEON_FALLBACKS)
573 fprintf(stderr, "R200 end tcl fallback\n");
574 }
575
576
577 static char *fallbackStrings[] = {
578 "Rasterization fallback",
579 "Unfilled triangles",
580 "Twosided lighting, differing materials",
581 "Materials in VB (maybe between begin/end)",
582 "Texgen unit 0",
583 "Texgen unit 1",
584 "Texgen unit 2",
585 "Texgen unit 3",
586 "Texgen unit 4",
587 "Texgen unit 5",
588 "User disable",
589 "Bitmap as points",
590 "Vertex program"
591 };
592
593
594 static char *getFallbackString(GLuint bit)
595 {
596 int i = 0;
597 while (bit > 1) {
598 i++;
599 bit >>= 1;
600 }
601 return fallbackStrings[i];
602 }
603
604
605
606 void r200TclFallback( struct gl_context *ctx, GLuint bit, GLboolean mode )
607 {
608 r200ContextPtr rmesa = R200_CONTEXT(ctx);
609 GLuint oldfallback = rmesa->radeon.TclFallback;
610
611 if (mode) {
612 if (oldfallback == 0) {
613 /* We have to flush before transition */
614 if ( rmesa->radeon.dma.flush )
615 rmesa->radeon.dma.flush( &rmesa->radeon.glCtx );
616
617 if (R200_DEBUG & RADEON_FALLBACKS)
618 fprintf(stderr, "R200 begin tcl fallback %s\n",
619 getFallbackString( bit ));
620 rmesa->radeon.TclFallback |= bit;
621 transition_to_swtnl( ctx );
622 } else
623 rmesa->radeon.TclFallback |= bit;
624 } else {
625 if (oldfallback == bit) {
626 /* We have to flush before transition */
627 if ( rmesa->radeon.dma.flush )
628 rmesa->radeon.dma.flush( &rmesa->radeon.glCtx );
629
630 if (R200_DEBUG & RADEON_FALLBACKS)
631 fprintf(stderr, "R200 end tcl fallback %s\n",
632 getFallbackString( bit ));
633 rmesa->radeon.TclFallback &= ~bit;
634 transition_to_hwtnl( ctx );
635 } else
636 rmesa->radeon.TclFallback &= ~bit;
637 }
638 }