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[mesa.git] / src / mesa / drivers / dri / r200 / r200_tcl.c
1 /* $XFree86: xc/lib/GL/mesa/src/drv/r200/r200_tcl.c,v 1.2 2002/12/16 16:18:55 dawes Exp $ */
2 /*
3 Copyright (C) The Weather Channel, Inc. 2002. All Rights Reserved.
4
5 The Weather Channel (TM) funded Tungsten Graphics to develop the
6 initial release of the Radeon 8500 driver under the XFree86 license.
7 This notice must be preserved.
8
9 Permission is hereby granted, free of charge, to any person obtaining
10 a copy of this software and associated documentation files (the
11 "Software"), to deal in the Software without restriction, including
12 without limitation the rights to use, copy, modify, merge, publish,
13 distribute, sublicense, and/or sell copies of the Software, and to
14 permit persons to whom the Software is furnished to do so, subject to
15 the following conditions:
16
17 The above copyright notice and this permission notice (including the
18 next paragraph) shall be included in all copies or substantial
19 portions of the Software.
20
21 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
24 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
25 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28
29 **************************************************************************/
30
31 /*
32 * Authors:
33 * Keith Whitwell <keith@tungstengraphics.com>
34 */
35
36 #include "glheader.h"
37 #include "imports.h"
38 #include "mtypes.h"
39 #include "enums.h"
40 #include "colormac.h"
41 #include "light.h"
42
43 #include "array_cache/acache.h"
44 #include "tnl/tnl.h"
45 #include "tnl/t_pipeline.h"
46
47 #include "r200_context.h"
48 #include "r200_state.h"
49 #include "r200_ioctl.h"
50 #include "r200_tex.h"
51 #include "r200_tcl.h"
52 #include "r200_swtcl.h"
53 #include "r200_maos.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_STRIP_1 0
64 #define HAVE_TRI_FANS 1
65 #define HAVE_QUADS 1
66 #define HAVE_QUAD_STRIPS 1
67 #define HAVE_POLYGONS 1
68 #define HAVE_ELTS 1
69
70
71 #define HW_POINTS ((ctx->_TriangleCaps & DD_POINT_SIZE) ? \
72 R200_VF_PRIM_POINT_SPRITES : R200_VF_PRIM_POINTS)
73 #define HW_LINES R200_VF_PRIM_LINES
74 #define HW_LINE_LOOP 0
75 #define HW_LINE_STRIP R200_VF_PRIM_LINE_STRIP
76 #define HW_TRIANGLES R200_VF_PRIM_TRIANGLES
77 #define HW_TRIANGLE_STRIP_0 R200_VF_PRIM_TRIANGLE_STRIP
78 #define HW_TRIANGLE_STRIP_1 0
79 #define HW_TRIANGLE_FAN R200_VF_PRIM_TRIANGLE_FAN
80 #define HW_QUADS R200_VF_PRIM_QUADS
81 #define HW_QUAD_STRIP R200_VF_PRIM_QUAD_STRIP
82 #define HW_POLYGON R200_VF_PRIM_POLYGON
83
84
85 static GLboolean discrete_prim[0x10] = {
86 0, /* 0 none */
87 1, /* 1 points */
88 1, /* 2 lines */
89 0, /* 3 line_strip */
90 1, /* 4 tri_list */
91 0, /* 5 tri_fan */
92 0, /* 6 tri_strip */
93 0, /* 7 tri_w_flags */
94 1, /* 8 rect list (unused) */
95 1, /* 9 3vert point */
96 1, /* a 3vert line */
97 0, /* b point sprite */
98 0, /* c line loop */
99 1, /* d quads */
100 0, /* e quad strip */
101 0, /* f polygon */
102 };
103
104
105 #define LOCAL_VARS r200ContextPtr rmesa = R200_CONTEXT(ctx)
106 #define ELT_TYPE GLushort
107
108 #define ELT_INIT(prim, hw_prim) \
109 r200TclPrimitive( ctx, prim, hw_prim | R200_VF_PRIM_WALK_IND )
110
111 #define GET_MESA_ELTS() rmesa->tcl.Elts
112
113
114 /* Don't really know how many elts will fit in what's left of cmdbuf,
115 * as there is state to emit, etc:
116 */
117
118 /* Testing on isosurf shows a maximum around here. Don't know if it's
119 * the card or driver or kernel module that is causing the behaviour.
120 */
121 #define GET_MAX_HW_ELTS() 300
122
123 #define RESET_STIPPLE() do { \
124 R200_STATECHANGE( rmesa, lin ); \
125 r200EmitState( rmesa ); \
126 } while (0)
127
128 #define AUTO_STIPPLE( mode ) do { \
129 R200_STATECHANGE( rmesa, lin ); \
130 if (mode) \
131 rmesa->hw.lin.cmd[LIN_RE_LINE_PATTERN] |= \
132 R200_LINE_PATTERN_AUTO_RESET; \
133 else \
134 rmesa->hw.lin.cmd[LIN_RE_LINE_PATTERN] &= \
135 ~R200_LINE_PATTERN_AUTO_RESET; \
136 r200EmitState( rmesa ); \
137 } while (0)
138
139
140 #define ALLOC_ELTS(nr) r200AllocElts( rmesa, nr )
141
142 static GLushort *r200AllocElts( r200ContextPtr rmesa, GLuint nr )
143 {
144 if (rmesa->dma.flush == r200FlushElts &&
145 rmesa->store.cmd_used + nr*2 < R200_CMD_BUF_SZ) {
146
147 GLushort *dest = (GLushort *)(rmesa->store.cmd_buf +
148 rmesa->store.cmd_used);
149
150 rmesa->store.cmd_used += nr*2;
151
152 return dest;
153 }
154 else {
155 if (rmesa->dma.flush)
156 rmesa->dma.flush( rmesa );
157
158 r200EnsureCmdBufSpace( rmesa, AOS_BUFSZ(rmesa->tcl.nr_aos_components) +
159 rmesa->hw.max_state_size + ELTS_BUFSZ(nr) );
160
161 r200EmitAOS( rmesa,
162 rmesa->tcl.aos_components,
163 rmesa->tcl.nr_aos_components, 0 );
164
165 return r200AllocEltsOpenEnded( rmesa, rmesa->tcl.hw_primitive, nr );
166 }
167 }
168
169
170 #define CLOSE_ELTS() \
171 do { \
172 if (0) R200_NEWPRIM( rmesa ); \
173 } \
174 while (0)
175
176
177 /* TODO: Try to extend existing primitive if both are identical,
178 * discrete and there are no intervening state changes. (Somewhat
179 * duplicates changes to DrawArrays code)
180 */
181 static void r200EmitPrim( GLcontext *ctx,
182 GLenum prim,
183 GLuint hwprim,
184 GLuint start,
185 GLuint count)
186 {
187 r200ContextPtr rmesa = R200_CONTEXT( ctx );
188 r200TclPrimitive( ctx, prim, hwprim );
189
190 r200EnsureCmdBufSpace( rmesa, AOS_BUFSZ(rmesa->tcl.nr_aos_components) +
191 rmesa->hw.max_state_size + VBUF_BUFSZ );
192
193 r200EmitAOS( rmesa,
194 rmesa->tcl.aos_components,
195 rmesa->tcl.nr_aos_components,
196 start );
197
198 /* Why couldn't this packet have taken an offset param?
199 */
200 r200EmitVbufPrim( rmesa,
201 rmesa->tcl.hw_primitive,
202 count - start );
203 }
204
205 #define EMIT_PRIM(ctx, prim, hwprim, start, count) do { \
206 r200EmitPrim( ctx, prim, hwprim, start, count ); \
207 (void) rmesa; } while (0)
208
209 /* Try & join small primitives
210 */
211 #if 0
212 #define PREFER_DISCRETE_ELT_PRIM( NR, PRIM ) 0
213 #else
214 #define PREFER_DISCRETE_ELT_PRIM( NR, PRIM ) \
215 ((NR) < 20 || \
216 ((NR) < 40 && \
217 rmesa->tcl.hw_primitive == (PRIM| \
218 R200_VF_TCL_OUTPUT_VTX_ENABLE| \
219 R200_VF_PRIM_WALK_IND)))
220 #endif
221
222 #ifdef MESA_BIG_ENDIAN
223 /* We could do without (most of) this ugliness if dest was always 32 bit word aligned... */
224 #define EMIT_ELT(dest, offset, x) do { \
225 int off = offset + ( ( (GLuint)dest & 0x2 ) >> 1 ); \
226 GLushort *des = (GLushort *)( (GLuint)dest & ~0x2 ); \
227 (des)[ off + 1 - 2 * ( off & 1 ) ] = (GLushort)(x); \
228 (void)rmesa; } while (0)
229 #else
230 #define EMIT_ELT(dest, offset, x) do { \
231 (dest)[offset] = (GLushort) (x); \
232 (void)rmesa; } while (0)
233 #endif
234
235 #define EMIT_TWO_ELTS(dest, offset, x, y) *(GLuint *)((dest)+offset) = ((y)<<16)|(x);
236
237
238
239 #define TAG(x) tcl_##x
240 #include "tnl_dd/t_dd_dmatmp2.h"
241
242 /**********************************************************************/
243 /* External entrypoints */
244 /**********************************************************************/
245
246 void r200EmitPrimitive( GLcontext *ctx,
247 GLuint first,
248 GLuint last,
249 GLuint flags )
250 {
251 tcl_render_tab_verts[flags&PRIM_MODE_MASK]( ctx, first, last, flags );
252 }
253
254 void r200EmitEltPrimitive( GLcontext *ctx,
255 GLuint first,
256 GLuint last,
257 GLuint flags )
258 {
259 tcl_render_tab_elts[flags&PRIM_MODE_MASK]( ctx, first, last, flags );
260 }
261
262 void r200TclPrimitive( GLcontext *ctx,
263 GLenum prim,
264 int hw_prim )
265 {
266 r200ContextPtr rmesa = R200_CONTEXT(ctx);
267 GLuint newprim = hw_prim | R200_VF_TCL_OUTPUT_VTX_ENABLE;
268
269 if (newprim != rmesa->tcl.hw_primitive ||
270 !discrete_prim[hw_prim&0xf]) {
271 R200_NEWPRIM( rmesa );
272 rmesa->tcl.hw_primitive = newprim;
273 }
274 }
275
276
277 /**********************************************************************/
278 /* Fog blend factor computation for hw tcl */
279 /* same calculation used as in t_vb_fog.c */
280 /**********************************************************************/
281
282 #define FOG_EXP_TABLE_SIZE 256
283 #define FOG_MAX (10.0)
284 #define EXP_FOG_MAX .0006595
285 #define FOG_INCR (FOG_MAX/FOG_EXP_TABLE_SIZE)
286 static GLfloat exp_table[FOG_EXP_TABLE_SIZE];
287
288 #if 1
289 #define NEG_EXP( result, narg ) \
290 do { \
291 GLfloat f = (GLfloat) (narg * (1.0/FOG_INCR)); \
292 GLint k = (GLint) f; \
293 if (k > FOG_EXP_TABLE_SIZE-2) \
294 result = (GLfloat) EXP_FOG_MAX; \
295 else \
296 result = exp_table[k] + (f-k)*(exp_table[k+1]-exp_table[k]); \
297 } while (0)
298 #else
299 #define NEG_EXP( result, narg ) \
300 do { \
301 result = exp(-narg); \
302 } while (0)
303 #endif
304
305
306 /**
307 * Initialize the exp_table[] lookup table for approximating exp().
308 */
309 void
310 r200InitStaticFogData( void )
311 {
312 GLfloat f = 0.0F;
313 GLint i = 0;
314 for ( ; i < FOG_EXP_TABLE_SIZE ; i++, f += FOG_INCR) {
315 exp_table[i] = (GLfloat) exp(-f);
316 }
317 }
318
319
320 /**
321 * Compute per-vertex fog blend factors from fog coordinates by
322 * evaluating the GL_LINEAR, GL_EXP or GL_EXP2 fog function.
323 * Fog coordinates are distances from the eye (typically between the
324 * near and far clip plane distances).
325 * Note the fog (eye Z) coords may be negative so we use ABS(z) below.
326 * Fog blend factors are in the range [0,1].
327 */
328 float
329 r200ComputeFogBlendFactor( GLcontext *ctx, GLfloat fogcoord )
330 {
331 GLfloat end = ctx->Fog.End;
332 GLfloat d, temp;
333 const GLfloat z = FABSF(fogcoord);
334
335 switch (ctx->Fog.Mode) {
336 case GL_LINEAR:
337 if (ctx->Fog.Start == ctx->Fog.End)
338 d = 1.0F;
339 else
340 d = 1.0F / (ctx->Fog.End - ctx->Fog.Start);
341 temp = (end - z) * d;
342 return CLAMP(temp, 0.0F, 1.0F);
343 break;
344 case GL_EXP:
345 d = ctx->Fog.Density;
346 NEG_EXP( temp, d * z );
347 return temp;
348 break;
349 case GL_EXP2:
350 d = ctx->Fog.Density*ctx->Fog.Density;
351 NEG_EXP( temp, d * z * z );
352 return temp;
353 break;
354 default:
355 _mesa_problem(ctx, "Bad fog mode in make_fog_coord");
356 return 0;
357 }
358 }
359
360
361 /**********************************************************************/
362 /* Render pipeline stage */
363 /**********************************************************************/
364
365
366 /* TCL render.
367 */
368 static GLboolean r200_run_tcl_render( GLcontext *ctx,
369 struct tnl_pipeline_stage *stage )
370 {
371 r200ContextPtr rmesa = R200_CONTEXT(ctx);
372 TNLcontext *tnl = TNL_CONTEXT(ctx);
373 struct vertex_buffer *VB = &tnl->vb;
374 GLuint inputs = VERT_BIT_POS | VERT_BIT_COLOR0;
375 GLuint i;
376
377 /* TODO: separate this from the swtnl pipeline
378 */
379 if (rmesa->TclFallback)
380 return GL_TRUE; /* fallback to software t&l */
381
382 if (R200_DEBUG & DEBUG_PRIMS)
383 fprintf(stderr, "%s\n", __FUNCTION__);
384
385 if (VB->Count == 0)
386 return GL_FALSE;
387
388 /* Validate state:
389 */
390 if (rmesa->NewGLState)
391 r200ValidateState( ctx );
392
393 if (!ctx->VertexProgram._Enabled) {
394 /* NOTE: inputs != tnl->render_inputs - these are the untransformed
395 * inputs.
396 */
397 if (ctx->Light.Enabled) {
398 inputs |= VERT_BIT_NORMAL;
399 }
400
401 if (ctx->_TriangleCaps & DD_SEPARATE_SPECULAR) {
402 inputs |= VERT_BIT_COLOR1;
403 }
404
405 if ( (ctx->Fog.FogCoordinateSource == GL_FOG_COORD) && ctx->Fog.Enabled ) {
406 inputs |= VERT_BIT_FOG;
407 }
408
409 for (i = 0 ; i < ctx->Const.MaxTextureUnits; i++) {
410 if (ctx->Texture.Unit[i]._ReallyEnabled) {
411 if (rmesa->TexGenNeedNormals[i]) {
412 inputs |= VERT_BIT_NORMAL;
413 }
414 inputs |= VERT_BIT_TEX(i);
415 }
416 }
417 }
418 else {
419 GLuint out_vtxfmt0 = 0;
420 GLuint out_vtxfmt1 = 0;
421 GLuint out_compsel = 0;
422 GLuint vp_out = rmesa->curr_vp_hw->mesa_program.Base.OutputsWritten;
423 /* can't handle other inputs, generic attribs etc. currently - should never arrive here */
424 assert ((rmesa->curr_vp_hw->mesa_program.Base.InputsRead &
425 ~(VERT_BIT_POS | VERT_BIT_NORMAL | VERT_BIT_COLOR0 | VERT_BIT_COLOR1 |
426 VERT_BIT_FOG | VERT_BIT_TEX0 | VERT_BIT_TEX1 | VERT_BIT_TEX2 |
427 VERT_BIT_TEX3 | VERT_BIT_TEX4 | VERT_BIT_TEX5)) == 0);
428 inputs |= rmesa->curr_vp_hw->mesa_program.Base.InputsRead;
429 /* FIXME: this is a mess. Not really sure how to set up TCL_OUTPUT_VTXFMT
430 in "undefined" cases (e.g. output needed later but not written by vertex program or vice versa)
431 - however misconfiguration here will almost certainly lock up the chip.
432 I think at the very least we need to enable tcl outputs which we write to. Maybe even need to
433 fix up a vertex program so an output needed later always gets written?
434 For now just set the compsel and output_vtxfmt to the outputs written.
435 However, for simplicity we assume always all 4 values are written which may not be correct
436 (but I don't know if it could lead to lockups). */
437 assert(vp_out & (1 << VERT_RESULT_HPOS));
438 out_vtxfmt0 = R200_VTX_XY | R200_VTX_Z0 | R200_VTX_W0;
439 /* FIXME: need to always enable color_0 otherwise doom3's shadow vp (?) will lock up (?) */
440 out_vtxfmt0 |= R200_VTX_FP_RGBA << R200_VTX_COLOR_0_SHIFT;
441 out_compsel = R200_OUTPUT_XYZW;
442 if (vp_out & (1 << VERT_RESULT_COL0)) {
443 out_vtxfmt0 |= R200_VTX_FP_RGBA << R200_VTX_COLOR_0_SHIFT;
444 out_compsel |= R200_OUTPUT_COLOR_0;
445 }
446 if (vp_out & (1 << VERT_RESULT_COL1)) {
447 out_vtxfmt0 |= R200_VTX_FP_RGBA << R200_VTX_COLOR_1_SHIFT;
448 out_compsel |= R200_OUTPUT_COLOR_1;
449 }
450 /* FIXME: probably not everything is set up for fogc and psiz to work correctly */
451 if (vp_out & (1 << VERT_RESULT_FOGC)) {
452 out_vtxfmt0 |= R200_VTX_DISCRETE_FOG;
453 out_compsel |= R200_OUTPUT_DISCRETE_FOG;
454 }
455 if (vp_out & (1 << VERT_RESULT_PSIZ)) {
456 out_vtxfmt0 |= R200_VTX_POINT_SIZE;
457 out_compsel |= R200_OUTPUT_PT_SIZE;
458 }
459 for (i = VERT_RESULT_TEX0; i < VERT_RESULT_TEX6; i++) {
460 if (vp_out & (1 << i)) {
461 out_vtxfmt1 |= 4 << ((i - VERT_RESULT_TEX0) * 3);
462 out_compsel |= R200_OUTPUT_TEX_0 << (i - VERT_RESULT_TEX0);
463 }
464 }
465 if ((rmesa->hw.vtx.cmd[VTX_TCL_OUTPUT_VTXFMT_0] != out_vtxfmt0) ||
466 (rmesa->hw.vtx.cmd[VTX_TCL_OUTPUT_VTXFMT_1] != out_vtxfmt1) ||
467 (rmesa->hw.vtx.cmd[VTX_TCL_OUTPUT_COMPSEL] != out_compsel)) {
468 R200_STATECHANGE( rmesa, vtx );
469 rmesa->hw.vtx.cmd[VTX_TCL_OUTPUT_VTXFMT_0] = out_vtxfmt0;
470 rmesa->hw.vtx.cmd[VTX_TCL_OUTPUT_VTXFMT_1] = out_vtxfmt1;
471 rmesa->hw.vtx.cmd[VTX_TCL_OUTPUT_COMPSEL] = out_compsel;
472 /* FIXME: should restore this when disabling vertex programs maybe? */
473 }
474 }
475
476 /* Do the actual work:
477 */
478 r200ReleaseArrays( ctx, ~0 /* stage->changed_inputs */ );
479 r200EmitArrays( ctx, inputs );
480
481 rmesa->tcl.Elts = VB->Elts;
482
483 for (i = 0 ; i < VB->PrimitiveCount ; i++)
484 {
485 GLuint prim = VB->Primitive[i].mode;
486 GLuint start = VB->Primitive[i].start;
487 GLuint length = VB->Primitive[i].count;
488
489 if (!length)
490 continue;
491
492 if (rmesa->tcl.Elts)
493 r200EmitEltPrimitive( ctx, start, start+length, prim );
494 else
495 r200EmitPrimitive( ctx, start, start+length, prim );
496 }
497
498 return GL_FALSE; /* finished the pipe */
499 }
500
501
502
503 /* Initial state for tcl stage.
504 */
505 const struct tnl_pipeline_stage _r200_tcl_stage =
506 {
507 "r200 render",
508 NULL, /* private */
509 NULL,
510 NULL,
511 NULL,
512 r200_run_tcl_render /* run */
513 };
514
515
516
517 /**********************************************************************/
518 /* Validate state at pipeline start */
519 /**********************************************************************/
520
521
522 /*-----------------------------------------------------------------------
523 * Manage TCL fallbacks
524 */
525
526
527 static void transition_to_swtnl( GLcontext *ctx )
528 {
529 r200ContextPtr rmesa = R200_CONTEXT(ctx);
530 TNLcontext *tnl = TNL_CONTEXT(ctx);
531
532 R200_NEWPRIM( rmesa );
533
534 r200ChooseVertexState( ctx );
535 r200ChooseRenderState( ctx );
536
537 _mesa_validate_all_lighting_tables( ctx );
538
539 tnl->Driver.NotifyMaterialChange =
540 _mesa_validate_all_lighting_tables;
541
542 r200ReleaseArrays( ctx, ~0 );
543
544 /* Still using the D3D based hardware-rasterizer from the radeon;
545 * need to put the card into D3D mode to make it work:
546 */
547 R200_STATECHANGE( rmesa, vap );
548 rmesa->hw.vap.cmd[VAP_SE_VAP_CNTL] &= ~(R200_VAP_TCL_ENABLE|R200_VAP_PROG_VTX_SHADER_ENABLE);
549 }
550
551 static void transition_to_hwtnl( GLcontext *ctx )
552 {
553 r200ContextPtr rmesa = R200_CONTEXT(ctx);
554 TNLcontext *tnl = TNL_CONTEXT(ctx);
555
556 _tnl_need_projected_coords( ctx, GL_FALSE );
557
558 r200UpdateMaterial( ctx );
559
560 tnl->Driver.NotifyMaterialChange = r200UpdateMaterial;
561
562 if ( rmesa->dma.flush )
563 rmesa->dma.flush( rmesa );
564
565 rmesa->dma.flush = NULL;
566
567 if (rmesa->swtcl.indexed_verts.buf)
568 r200ReleaseDmaRegion( rmesa, &rmesa->swtcl.indexed_verts,
569 __FUNCTION__ );
570
571 R200_STATECHANGE( rmesa, vap );
572 rmesa->hw.vap.cmd[VAP_SE_VAP_CNTL] |= R200_VAP_TCL_ENABLE;
573 rmesa->hw.vap.cmd[VAP_SE_VAP_CNTL] &= ~R200_VAP_FORCE_W_TO_ONE;
574
575 if (ctx->VertexProgram._Enabled) {
576 rmesa->hw.vap.cmd[VAP_SE_VAP_CNTL] |= R200_VAP_PROG_VTX_SHADER_ENABLE;
577 }
578
579 if ( ((rmesa->hw.ctx.cmd[CTX_PP_FOG_COLOR] & R200_FOG_USE_MASK)
580 == R200_FOG_USE_SPEC_ALPHA) &&
581 (ctx->Fog.FogCoordinateSource == GL_FOG_COORD )) {
582 R200_STATECHANGE( rmesa, ctx );
583 rmesa->hw.ctx.cmd[CTX_PP_FOG_COLOR] &= ~R200_FOG_USE_MASK;
584 rmesa->hw.ctx.cmd[CTX_PP_FOG_COLOR] |= R200_FOG_USE_VTX_FOG;
585 }
586
587 R200_STATECHANGE( rmesa, vte );
588 rmesa->hw.vte.cmd[VTE_SE_VTE_CNTL] &= ~(R200_VTX_XY_FMT|R200_VTX_Z_FMT);
589 rmesa->hw.vte.cmd[VTE_SE_VTE_CNTL] |= R200_VTX_W0_FMT;
590
591 if (R200_DEBUG & DEBUG_FALLBACKS)
592 fprintf(stderr, "R200 end tcl fallback\n");
593 }
594
595
596 static char *fallbackStrings[] = {
597 "Rasterization fallback",
598 "Unfilled triangles",
599 "Twosided lighting, differing materials",
600 "Materials in VB (maybe between begin/end)",
601 "Texgen unit 0",
602 "Texgen unit 1",
603 "Texgen unit 2",
604 "Texgen unit 3",
605 "Texgen unit 4",
606 "Texgen unit 5",
607 "User disable",
608 "Bitmap as points",
609 "Vertex program"
610 };
611
612
613 static char *getFallbackString(GLuint bit)
614 {
615 int i = 0;
616 while (bit > 1) {
617 i++;
618 bit >>= 1;
619 }
620 return fallbackStrings[i];
621 }
622
623
624
625 void r200TclFallback( GLcontext *ctx, GLuint bit, GLboolean mode )
626 {
627 r200ContextPtr rmesa = R200_CONTEXT(ctx);
628 GLuint oldfallback = rmesa->TclFallback;
629
630 if (mode) {
631 rmesa->TclFallback |= bit;
632 if (oldfallback == 0) {
633 if (R200_DEBUG & DEBUG_FALLBACKS)
634 fprintf(stderr, "R200 begin tcl fallback %s\n",
635 getFallbackString( bit ));
636 transition_to_swtnl( ctx );
637 }
638 }
639 else {
640 rmesa->TclFallback &= ~bit;
641 if (oldfallback == bit) {
642 if (R200_DEBUG & DEBUG_FALLBACKS)
643 fprintf(stderr, "R200 end tcl fallback %s\n",
644 getFallbackString( bit ));
645 transition_to_hwtnl( ctx );
646 }
647 }
648 }