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Merge remote branch 'upstream/gallium-0.1' into nouveau-gallium-0.1
[mesa.git] / src / mesa / drivers / dri / unichrome / via_state.c
1 /*
2 * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
3 * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
4 *
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 * the rights to use, copy, modify, merge, publish, distribute, sub license,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the
13 * next paragraph) shall be included in all copies or substantial portions
14 * of the Software.
15 *
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 * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24
25 #include <stdio.h>
26
27 #include "glheader.h"
28 #include "context.h"
29 #include "macros.h"
30 #include "colormac.h"
31 #include "enums.h"
32 #include "dd.h"
33
34 #include "mm.h"
35 #include "via_context.h"
36 #include "via_state.h"
37 #include "via_tex.h"
38 #include "via_tris.h"
39 #include "via_ioctl.h"
40 #include "via_3d_reg.h"
41
42 #include "swrast/swrast.h"
43 #include "vbo/vbo.h"
44 #include "tnl/tnl.h"
45 #include "swrast_setup/swrast_setup.h"
46
47 #include "tnl/t_pipeline.h"
48
49
50 static GLuint ROP[16] = {
51 HC_HROP_BLACK, /* GL_CLEAR 0 */
52 HC_HROP_DPa, /* GL_AND s & d */
53 HC_HROP_PDna, /* GL_AND_REVERSE s & ~d */
54 HC_HROP_P, /* GL_COPY s */
55 HC_HROP_DPna, /* GL_AND_INVERTED ~s & d */
56 HC_HROP_D, /* GL_NOOP d */
57 HC_HROP_DPx, /* GL_XOR s ^ d */
58 HC_HROP_DPo, /* GL_OR s | d */
59 HC_HROP_DPon, /* GL_NOR ~(s | d) */
60 HC_HROP_DPxn, /* GL_EQUIV ~(s ^ d) */
61 HC_HROP_Dn, /* GL_INVERT ~d */
62 HC_HROP_PDno, /* GL_OR_REVERSE s | ~d */
63 HC_HROP_Pn, /* GL_COPY_INVERTED ~s */
64 HC_HROP_DPno, /* GL_OR_INVERTED ~s | d */
65 HC_HROP_DPan, /* GL_NAND ~(s & d) */
66 HC_HROP_WHITE /* GL_SET 1 */
67 };
68
69 /*
70 * Compute the 'S5.5' lod bias factor from the floating point OpenGL bias.
71 */
72 static GLuint viaComputeLodBias(GLfloat bias)
73 {
74 int b = (int) (bias * 32.0);
75 if (b > 511)
76 b = 511;
77 else if (b < -512)
78 b = -512;
79 return (GLuint) b;
80 }
81
82 void viaEmitState(struct via_context *vmesa)
83 {
84 GLcontext *ctx = vmesa->glCtx;
85 GLuint i = 0;
86 GLuint j = 0;
87 RING_VARS;
88
89 viaCheckDma(vmesa, 0x110);
90
91 BEGIN_RING(5);
92 OUT_RING( HC_HEADER2 );
93 OUT_RING( (HC_ParaType_NotTex << 16) );
94 OUT_RING( ((HC_SubA_HEnable << 24) | vmesa->regEnable) );
95 OUT_RING( ((HC_SubA_HFBBMSKL << 24) | vmesa->regHFBBMSKL) );
96 OUT_RING( ((HC_SubA_HROP << 24) | vmesa->regHROP) );
97 ADVANCE_RING();
98
99 if (vmesa->have_hw_stencil) {
100 GLuint pitch, format, offset;
101
102 format = HC_HZWBFM_24;
103 offset = vmesa->depth.offset;
104 pitch = vmesa->depth.pitch;
105
106 BEGIN_RING(6);
107 OUT_RING( (HC_SubA_HZWBBasL << 24) | (offset & 0xFFFFFF) );
108 OUT_RING( (HC_SubA_HZWBBasH << 24) | ((offset & 0xFF000000) >> 24) );
109 OUT_RING( (HC_SubA_HZWBType << 24) | HC_HDBLoc_Local | HC_HZONEasFF_MASK |
110 format | pitch );
111 OUT_RING( (HC_SubA_HZWTMD << 24) | vmesa->regHZWTMD );
112 OUT_RING( (HC_SubA_HSTREF << 24) | vmesa->regHSTREF );
113 OUT_RING( (HC_SubA_HSTMD << 24) | vmesa->regHSTMD );
114 ADVANCE_RING();
115 }
116 else if (vmesa->hasDepth) {
117 GLuint pitch, format, offset;
118
119 if (vmesa->depthBits == 16) {
120 format = HC_HZWBFM_16;
121 }
122 else {
123 format = HC_HZWBFM_32;
124 }
125
126
127 offset = vmesa->depth.offset;
128 pitch = vmesa->depth.pitch;
129
130 BEGIN_RING(4);
131 OUT_RING( (HC_SubA_HZWBBasL << 24) | (offset & 0xFFFFFF) );
132 OUT_RING( (HC_SubA_HZWBBasH << 24) | ((offset & 0xFF000000) >> 24) );
133 OUT_RING( (HC_SubA_HZWBType << 24) | HC_HDBLoc_Local | HC_HZONEasFF_MASK |
134 format | pitch );
135 OUT_RING( (HC_SubA_HZWTMD << 24) | vmesa->regHZWTMD );
136 ADVANCE_RING();
137 }
138
139 if (ctx->Color.AlphaEnabled) {
140 BEGIN_RING(1);
141 OUT_RING( (HC_SubA_HATMD << 24) | vmesa->regHATMD );
142 ADVANCE_RING();
143 i++;
144 }
145
146 if (ctx->Color.BlendEnabled) {
147 BEGIN_RING(11);
148 OUT_RING( (HC_SubA_HABLCsat << 24) | vmesa->regHABLCsat );
149 OUT_RING( (HC_SubA_HABLCop << 24) | vmesa->regHABLCop );
150 OUT_RING( (HC_SubA_HABLAsat << 24) | vmesa->regHABLAsat );
151 OUT_RING( (HC_SubA_HABLAop << 24) | vmesa->regHABLAop );
152 OUT_RING( (HC_SubA_HABLRCa << 24) | vmesa->regHABLRCa );
153 OUT_RING( (HC_SubA_HABLRFCa << 24) | vmesa->regHABLRFCa );
154 OUT_RING( (HC_SubA_HABLRCbias << 24) | vmesa->regHABLRCbias );
155 OUT_RING( (HC_SubA_HABLRCb << 24) | vmesa->regHABLRCb );
156 OUT_RING( (HC_SubA_HABLRFCb << 24) | vmesa->regHABLRFCb );
157 OUT_RING( (HC_SubA_HABLRAa << 24) | vmesa->regHABLRAa );
158 OUT_RING( (HC_SubA_HABLRAb << 24) | vmesa->regHABLRAb );
159 ADVANCE_RING();
160 }
161
162 if (ctx->Fog.Enabled) {
163 BEGIN_RING(3);
164 OUT_RING( (HC_SubA_HFogLF << 24) | vmesa->regHFogLF );
165 OUT_RING( (HC_SubA_HFogCL << 24) | vmesa->regHFogCL );
166 OUT_RING( (HC_SubA_HFogCH << 24) | vmesa->regHFogCH );
167 ADVANCE_RING();
168 }
169
170 if (ctx->Line.StippleFlag) {
171 BEGIN_RING(2);
172 OUT_RING( (HC_SubA_HLP << 24) | ctx->Line.StipplePattern );
173 OUT_RING( (HC_SubA_HLPRF << 24) | ctx->Line.StippleFactor );
174 ADVANCE_RING();
175 }
176
177 BEGIN_RING(1);
178 OUT_RING( (HC_SubA_HPixGC << 24) | 0x0 );
179 ADVANCE_RING();
180
181 QWORD_PAD_RING();
182
183
184 if (ctx->Texture._EnabledUnits) {
185
186 struct gl_texture_unit *texUnit0 = &ctx->Texture.Unit[0];
187 struct gl_texture_unit *texUnit1 = &ctx->Texture.Unit[1];
188
189 {
190 GLuint nDummyValue = 0;
191
192 BEGIN_RING( 8 );
193 OUT_RING( HC_HEADER2 );
194 OUT_RING( (HC_ParaType_Tex << 16) | (HC_SubType_TexGeneral << 24) );
195
196 if (texUnit0->Enabled && texUnit1->Enabled) {
197 nDummyValue = (HC_SubA_HTXSMD << 24) | (1 << 3);
198 }
199 else {
200 nDummyValue = (HC_SubA_HTXSMD << 24) | 0;
201 }
202
203 if (vmesa->clearTexCache) {
204 vmesa->clearTexCache = 0;
205 OUT_RING( nDummyValue | HC_HTXCHCLR_MASK );
206 OUT_RING( nDummyValue );
207 }
208 else {
209 OUT_RING( nDummyValue );
210 OUT_RING( nDummyValue );
211 }
212
213 OUT_RING( HC_HEADER2 );
214 OUT_RING( HC_ParaType_NotTex << 16 );
215 OUT_RING( (HC_SubA_HEnable << 24) | vmesa->regEnable );
216 OUT_RING( (HC_SubA_HEnable << 24) | vmesa->regEnable );
217 ADVANCE_RING();
218 }
219
220 if (texUnit0->Enabled) {
221 struct gl_texture_object *texObj = texUnit0->_Current;
222 struct via_texture_object *t = (struct via_texture_object *)texObj;
223 GLuint numLevels = t->lastLevel - t->firstLevel + 1;
224 if (VIA_DEBUG & DEBUG_STATE) {
225 fprintf(stderr, "texture0 enabled\n");
226 }
227 if (numLevels == 8) {
228 BEGIN_RING(27);
229 OUT_RING( HC_HEADER2 );
230 OUT_RING( (HC_ParaType_Tex << 16) | (0 << 24) );
231 OUT_RING( t->regTexFM );
232 OUT_RING( (HC_SubA_HTXnL0OS << 24) |
233 ((t->lastLevel) << HC_HTXnLVmax_SHIFT) | t->firstLevel );
234 OUT_RING( t->regTexWidthLog2[0] );
235 OUT_RING( t->regTexWidthLog2[1] );
236 OUT_RING( t->regTexHeightLog2[0] );
237 OUT_RING( t->regTexHeightLog2[1] );
238 OUT_RING( t->regTexBaseH[0] );
239 OUT_RING( t->regTexBaseH[1] );
240 OUT_RING( t->regTexBaseH[2] );
241 OUT_RING( t->regTexBaseAndPitch[0].baseL );
242 OUT_RING( t->regTexBaseAndPitch[0].pitchLog2 );
243 OUT_RING( t->regTexBaseAndPitch[1].baseL );
244 OUT_RING( t->regTexBaseAndPitch[1].pitchLog2 );
245 OUT_RING( t->regTexBaseAndPitch[2].baseL );
246 OUT_RING( t->regTexBaseAndPitch[2].pitchLog2 );
247 OUT_RING( t->regTexBaseAndPitch[3].baseL );
248 OUT_RING( t->regTexBaseAndPitch[3].pitchLog2 );
249 OUT_RING( t->regTexBaseAndPitch[4].baseL );
250 OUT_RING( t->regTexBaseAndPitch[4].pitchLog2 );
251 OUT_RING( t->regTexBaseAndPitch[5].baseL );
252 OUT_RING( t->regTexBaseAndPitch[5].pitchLog2 );
253 OUT_RING( t->regTexBaseAndPitch[6].baseL );
254 OUT_RING( t->regTexBaseAndPitch[6].pitchLog2 );
255 OUT_RING( t->regTexBaseAndPitch[7].baseL );
256 OUT_RING( t->regTexBaseAndPitch[7].pitchLog2 );
257 ADVANCE_RING();
258 }
259 else if (numLevels > 1) {
260
261 BEGIN_RING(12 + numLevels * 2);
262 OUT_RING( HC_HEADER2 );
263 OUT_RING( (HC_ParaType_Tex << 16) | (0 << 24) );
264 OUT_RING( t->regTexFM );
265 OUT_RING( (HC_SubA_HTXnL0OS << 24) |
266 ((t->lastLevel) << HC_HTXnLVmax_SHIFT) | t->firstLevel );
267 OUT_RING( t->regTexWidthLog2[0] );
268 OUT_RING( t->regTexHeightLog2[0] );
269
270 if (numLevels > 6) {
271 OUT_RING( t->regTexWidthLog2[1] );
272 OUT_RING( t->regTexHeightLog2[1] );
273 }
274
275 OUT_RING( t->regTexBaseH[0] );
276
277 if (numLevels > 3) {
278 OUT_RING( t->regTexBaseH[1] );
279 }
280 if (numLevels > 6) {
281 OUT_RING( t->regTexBaseH[2] );
282 }
283 if (numLevels > 9) {
284 OUT_RING( t->regTexBaseH[3] );
285 }
286
287 for (j = 0; j < numLevels; j++) {
288 OUT_RING( t->regTexBaseAndPitch[j].baseL );
289 OUT_RING( t->regTexBaseAndPitch[j].pitchLog2 );
290 }
291
292 ADVANCE_RING_VARIABLE();
293 }
294 else {
295
296 BEGIN_RING(9);
297 OUT_RING( HC_HEADER2 );
298 OUT_RING( (HC_ParaType_Tex << 16) | (0 << 24) );
299 OUT_RING( t->regTexFM );
300 OUT_RING( (HC_SubA_HTXnL0OS << 24) |
301 ((t->lastLevel) << HC_HTXnLVmax_SHIFT) | t->firstLevel );
302 OUT_RING( t->regTexWidthLog2[0] );
303 OUT_RING( t->regTexHeightLog2[0] );
304 OUT_RING( t->regTexBaseH[0] );
305 OUT_RING( t->regTexBaseAndPitch[0].baseL );
306 OUT_RING( t->regTexBaseAndPitch[0].pitchLog2 );
307 ADVANCE_RING();
308 }
309
310 BEGIN_RING(14);
311 OUT_RING( (HC_SubA_HTXnTB << 24) | vmesa->regHTXnTB[0] );
312 OUT_RING( (HC_SubA_HTXnMPMD << 24) | vmesa->regHTXnMPMD[0] );
313 OUT_RING( (HC_SubA_HTXnTBLCsat << 24) | vmesa->regHTXnTBLCsat[0] );
314 OUT_RING( (HC_SubA_HTXnTBLCop << 24) | vmesa->regHTXnTBLCop[0] );
315 OUT_RING( (HC_SubA_HTXnTBLMPfog << 24) | vmesa->regHTXnTBLMPfog[0] );
316 OUT_RING( (HC_SubA_HTXnTBLAsat << 24) | vmesa->regHTXnTBLAsat[0] );
317 OUT_RING( (HC_SubA_HTXnTBLRCb << 24) | vmesa->regHTXnTBLRCb[0] );
318 OUT_RING( (HC_SubA_HTXnTBLRAa << 24) | vmesa->regHTXnTBLRAa[0] );
319 OUT_RING( (HC_SubA_HTXnTBLRFog << 24) | vmesa->regHTXnTBLRFog[0] );
320 OUT_RING( (HC_SubA_HTXnTBLRCa << 24) | vmesa->regHTXnTBLRCa[0] );
321 OUT_RING( (HC_SubA_HTXnTBLRCc << 24) | vmesa->regHTXnTBLRCc[0] );
322 OUT_RING( (HC_SubA_HTXnTBLRCbias << 24) | vmesa->regHTXnTBLRCbias[0] );
323 OUT_RING( (HC_SubA_HTXnTBC << 24) | vmesa->regHTXnTBC[0] );
324 OUT_RING( (HC_SubA_HTXnTRAH << 24) | vmesa->regHTXnTRAH[0] );
325 /* OUT_RING( (HC_SubA_HTXnCLODu << 24) | vmesa->regHTXnCLOD[0] ); */
326 ADVANCE_RING();
327
328 /* KW: This test never succeeds:
329 */
330 if (t->regTexFM == HC_HTXnFM_Index8) {
331 const struct gl_color_table *table = &texObj->Palette;
332 const GLfloat *tableF = table->TableF;
333
334 BEGIN_RING(2 + table->Size);
335 OUT_RING( HC_HEADER2 );
336 OUT_RING( (HC_ParaType_Palette << 16) | (0 << 24) );
337 for (j = 0; j < table->Size; j++)
338 OUT_RING( tableF[j] );
339 ADVANCE_RING();
340
341 }
342
343 QWORD_PAD_RING();
344 }
345
346 if (texUnit1->Enabled) {
347 struct gl_texture_object *texObj = texUnit1->_Current;
348 struct via_texture_object *t = (struct via_texture_object *)texObj;
349 GLuint numLevels = t->lastLevel - t->firstLevel + 1;
350 int texunit = (texUnit0->Enabled ? 1 : 0);
351 if (VIA_DEBUG & DEBUG_STATE) {
352 fprintf(stderr, "texture1 enabled\n");
353 }
354 if (numLevels == 8) {
355 BEGIN_RING(27);
356 OUT_RING( HC_HEADER2 );
357 OUT_RING( (HC_ParaType_Tex << 16) | (texunit << 24) );
358 OUT_RING( t->regTexFM );
359 OUT_RING( (HC_SubA_HTXnL0OS << 24) |
360 ((t->lastLevel) << HC_HTXnLVmax_SHIFT) | t->firstLevel );
361 OUT_RING( t->regTexWidthLog2[0] );
362 OUT_RING( t->regTexWidthLog2[1] );
363 OUT_RING( t->regTexHeightLog2[0] );
364 OUT_RING( t->regTexHeightLog2[1] );
365 OUT_RING( t->regTexBaseH[0] );
366 OUT_RING( t->regTexBaseH[1] );
367 OUT_RING( t->regTexBaseH[2] );
368 OUT_RING( t->regTexBaseAndPitch[0].baseL );
369 OUT_RING( t->regTexBaseAndPitch[0].pitchLog2 );
370 OUT_RING( t->regTexBaseAndPitch[1].baseL );
371 OUT_RING( t->regTexBaseAndPitch[1].pitchLog2 );
372 OUT_RING( t->regTexBaseAndPitch[2].baseL );
373 OUT_RING( t->regTexBaseAndPitch[2].pitchLog2 );
374 OUT_RING( t->regTexBaseAndPitch[3].baseL );
375 OUT_RING( t->regTexBaseAndPitch[3].pitchLog2 );
376 OUT_RING( t->regTexBaseAndPitch[4].baseL );
377 OUT_RING( t->regTexBaseAndPitch[4].pitchLog2 );
378 OUT_RING( t->regTexBaseAndPitch[5].baseL );
379 OUT_RING( t->regTexBaseAndPitch[5].pitchLog2 );
380 OUT_RING( t->regTexBaseAndPitch[6].baseL );
381 OUT_RING( t->regTexBaseAndPitch[6].pitchLog2 );
382 OUT_RING( t->regTexBaseAndPitch[7].baseL );
383 OUT_RING( t->regTexBaseAndPitch[7].pitchLog2 );
384 ADVANCE_RING();
385 }
386 else if (numLevels > 1) {
387 BEGIN_RING(12 + numLevels * 2);
388 OUT_RING( HC_HEADER2 );
389 OUT_RING( (HC_ParaType_Tex << 16) | (texunit << 24) );
390 OUT_RING( t->regTexFM );
391 OUT_RING( (HC_SubA_HTXnL0OS << 24) |
392 ((t->lastLevel) << HC_HTXnLVmax_SHIFT) | t->firstLevel );
393 OUT_RING( t->regTexWidthLog2[0] );
394 OUT_RING( t->regTexHeightLog2[0] );
395
396 if (numLevels > 6) {
397 OUT_RING( t->regTexWidthLog2[1] );
398 OUT_RING( t->regTexHeightLog2[1] );
399 i += 2;
400 }
401
402 OUT_RING( t->regTexBaseH[0] );
403
404 if (numLevels > 3) {
405 OUT_RING( t->regTexBaseH[1] );
406 }
407 if (numLevels > 6) {
408 OUT_RING( t->regTexBaseH[2] );
409 }
410 if (numLevels > 9) {
411 OUT_RING( t->regTexBaseH[3] );
412 }
413
414 for (j = 0; j < numLevels; j++) {
415 OUT_RING( t->regTexBaseAndPitch[j].baseL );
416 OUT_RING( t->regTexBaseAndPitch[j].pitchLog2 );
417 }
418 ADVANCE_RING_VARIABLE();
419 }
420 else {
421 BEGIN_RING(9);
422 OUT_RING( HC_HEADER2 );
423 OUT_RING( (HC_ParaType_Tex << 16) | (texunit << 24) );
424 OUT_RING( t->regTexFM );
425 OUT_RING( (HC_SubA_HTXnL0OS << 24) |
426 ((t->lastLevel) << HC_HTXnLVmax_SHIFT) | t->firstLevel );
427 OUT_RING( t->regTexWidthLog2[0] );
428 OUT_RING( t->regTexHeightLog2[0] );
429 OUT_RING( t->regTexBaseH[0] );
430 OUT_RING( t->regTexBaseAndPitch[0].baseL );
431 OUT_RING( t->regTexBaseAndPitch[0].pitchLog2 );
432 ADVANCE_RING();
433 }
434
435 BEGIN_RING(14);
436 OUT_RING( (HC_SubA_HTXnTB << 24) | vmesa->regHTXnTB[1] );
437 OUT_RING( (HC_SubA_HTXnMPMD << 24) | vmesa->regHTXnMPMD[1] );
438 OUT_RING( (HC_SubA_HTXnTBLCsat << 24) | vmesa->regHTXnTBLCsat[1] );
439 OUT_RING( (HC_SubA_HTXnTBLCop << 24) | vmesa->regHTXnTBLCop[1] );
440 OUT_RING( (HC_SubA_HTXnTBLMPfog << 24) | vmesa->regHTXnTBLMPfog[1] );
441 OUT_RING( (HC_SubA_HTXnTBLAsat << 24) | vmesa->regHTXnTBLAsat[1] );
442 OUT_RING( (HC_SubA_HTXnTBLRCb << 24) | vmesa->regHTXnTBLRCb[1] );
443 OUT_RING( (HC_SubA_HTXnTBLRAa << 24) | vmesa->regHTXnTBLRAa[1] );
444 OUT_RING( (HC_SubA_HTXnTBLRFog << 24) | vmesa->regHTXnTBLRFog[1] );
445 OUT_RING( (HC_SubA_HTXnTBLRCa << 24) | vmesa->regHTXnTBLRCa[1] );
446 OUT_RING( (HC_SubA_HTXnTBLRCc << 24) | vmesa->regHTXnTBLRCc[1] );
447 OUT_RING( (HC_SubA_HTXnTBLRCbias << 24) | vmesa->regHTXnTBLRCbias[1] );
448 OUT_RING( (HC_SubA_HTXnTBC << 24) | vmesa->regHTXnTBC[1] );
449 OUT_RING( (HC_SubA_HTXnTRAH << 24) | vmesa->regHTXnTRAH[1] );
450 /* OUT_RING( (HC_SubA_HTXnCLODu << 24) | vmesa->regHTXnCLOD[1] ); */
451 ADVANCE_RING();
452
453 /* KW: This test never succeeds:
454 */
455 if (t->regTexFM == HC_HTXnFM_Index8) {
456 const struct gl_color_table *table = &texObj->Palette;
457 const GLfloat *tableF = table->TableF;
458
459 BEGIN_RING(2 + table->Size);
460 OUT_RING( HC_HEADER2 );
461 OUT_RING( (HC_ParaType_Palette << 16) | (texunit << 24) );
462 for (j = 0; j < table->Size; j++) {
463 OUT_RING( tableF[j] );
464 }
465 ADVANCE_RING();
466 }
467
468 QWORD_PAD_RING();
469 }
470 }
471
472 #if 0
473 /* Polygon stipple is broken - for certain stipple values,
474 * eg. 0xf0f0f0f0, the hardware will refuse to accept the stipple.
475 * Coincidentally, conform generates just such a stipple.
476 */
477 if (ctx->Polygon.StippleFlag) {
478 GLuint *stipple = &ctx->PolygonStipple[0];
479 __DRIdrawablePrivate *dPriv = vmesa->driDrawable;
480 struct via_renderbuffer *const vrb =
481 (struct via_renderbuffer *) dPriv->driverPrivate;
482 GLint i;
483
484 BEGIN_RING(38);
485 OUT_RING( HC_HEADER2 );
486
487 OUT_RING( ((HC_ParaType_Palette << 16) | (HC_SubType_Stipple << 24)) );
488 for (i = 31; i >= 0; i--) {
489 GLint j;
490 GLuint k = 0;
491
492 /* Need to flip bits left to right:
493 */
494 for (j = 0 ; j < 32; j++)
495 if (stipple[i] & (1<<j))
496 k |= 1 << (31-j);
497
498 OUT_RING( k );
499 }
500
501 OUT_RING( HC_HEADER2 );
502 OUT_RING( (HC_ParaType_NotTex << 16) );
503 OUT_RING( (HC_SubA_HSPXYOS << 24) );
504 OUT_RING( (HC_SubA_HSPXYOS << 24) );
505
506 ADVANCE_RING();
507 }
508 #endif
509
510 vmesa->newEmitState = 0;
511 }
512
513
514 static __inline__ GLuint viaPackColor(GLuint bpp,
515 GLubyte r, GLubyte g,
516 GLubyte b, GLubyte a)
517 {
518 switch (bpp) {
519 case 16:
520 return PACK_COLOR_565(r, g, b);
521 case 32:
522 return PACK_COLOR_8888(a, r, g, b);
523 default:
524 assert(0);
525 return 0;
526 }
527 }
528
529 static void viaBlendEquationSeparate(GLcontext *ctx,
530 GLenum rgbMode,
531 GLenum aMode)
532 {
533 if (VIA_DEBUG & DEBUG_STATE)
534 fprintf(stderr, "%s in\n", __FUNCTION__);
535
536 /* GL_EXT_blend_equation_separate not supported */
537 ASSERT(rgbMode == aMode);
538
539 /* Can only do GL_ADD equation in hardware */
540 FALLBACK(VIA_CONTEXT(ctx), VIA_FALLBACK_BLEND_EQ,
541 rgbMode != GL_FUNC_ADD_EXT);
542
543 /* BlendEquation sets ColorLogicOpEnabled in an unexpected
544 * manner.
545 */
546 FALLBACK(VIA_CONTEXT(ctx), VIA_FALLBACK_LOGICOP,
547 (ctx->Color.ColorLogicOpEnabled &&
548 ctx->Color.LogicOp != GL_COPY));
549 }
550
551 static void viaBlendFunc(GLcontext *ctx, GLenum sfactor, GLenum dfactor)
552 {
553 struct via_context *vmesa = VIA_CONTEXT(ctx);
554 GLboolean fallback = GL_FALSE;
555 if (VIA_DEBUG & DEBUG_STATE)
556 fprintf(stderr, "%s in\n", __FUNCTION__);
557
558 switch (ctx->Color.BlendSrcRGB) {
559 case GL_SRC_ALPHA_SATURATE:
560 case GL_CONSTANT_COLOR:
561 case GL_ONE_MINUS_CONSTANT_COLOR:
562 case GL_CONSTANT_ALPHA:
563 case GL_ONE_MINUS_CONSTANT_ALPHA:
564 fallback = GL_TRUE;
565 break;
566 default:
567 break;
568 }
569
570 switch (ctx->Color.BlendDstRGB) {
571 case GL_CONSTANT_COLOR:
572 case GL_ONE_MINUS_CONSTANT_COLOR:
573 case GL_CONSTANT_ALPHA:
574 case GL_ONE_MINUS_CONSTANT_ALPHA:
575 fallback = GL_TRUE;
576 break;
577 default:
578 break;
579 }
580
581 FALLBACK(vmesa, VIA_FALLBACK_BLEND_FUNC, fallback);
582 }
583
584 /* Shouldn't be called as the extension is disabled.
585 */
586 static void viaBlendFuncSeparate(GLcontext *ctx, GLenum sfactorRGB,
587 GLenum dfactorRGB, GLenum sfactorA,
588 GLenum dfactorA)
589 {
590 if (dfactorRGB != dfactorA || sfactorRGB != sfactorA) {
591 _mesa_error(ctx, GL_INVALID_OPERATION, "glBlendEquation (disabled)");
592 }
593
594 viaBlendFunc(ctx, sfactorRGB, dfactorRGB);
595 }
596
597
598
599
600 /* =============================================================
601 * Hardware clipping
602 */
603 static void viaScissor(GLcontext *ctx, GLint x, GLint y,
604 GLsizei w, GLsizei h)
605 {
606 struct via_context *vmesa = VIA_CONTEXT(ctx);
607
608 if (!vmesa->driDrawable)
609 return;
610
611 if (VIA_DEBUG & DEBUG_STATE)
612 fprintf(stderr, "%s %d,%d %dx%d, drawH %d\n", __FUNCTION__,
613 x,y,w,h, vmesa->driDrawable->h);
614
615 if (vmesa->scissor) {
616 VIA_FLUSH_DMA(vmesa); /* don't pipeline cliprect changes */
617 }
618
619 vmesa->scissorRect.x1 = x;
620 vmesa->scissorRect.y1 = vmesa->driDrawable->h - y - h;
621 vmesa->scissorRect.x2 = x + w;
622 vmesa->scissorRect.y2 = vmesa->driDrawable->h - y;
623 }
624
625 static void viaEnable(GLcontext *ctx, GLenum cap, GLboolean state)
626 {
627 struct via_context *vmesa = VIA_CONTEXT(ctx);
628
629 switch (cap) {
630 case GL_SCISSOR_TEST:
631 VIA_FLUSH_DMA(vmesa);
632 vmesa->scissor = state;
633 break;
634 default:
635 break;
636 }
637 }
638
639
640
641 /* Fallback to swrast for select and feedback.
642 */
643 static void viaRenderMode(GLcontext *ctx, GLenum mode)
644 {
645 FALLBACK(VIA_CONTEXT(ctx), VIA_FALLBACK_RENDERMODE, (mode != GL_RENDER));
646 }
647
648
649 static void viaDrawBuffer(GLcontext *ctx, GLenum mode)
650 {
651 struct via_context *vmesa = VIA_CONTEXT(ctx);
652
653 if (VIA_DEBUG & (DEBUG_DRI|DEBUG_STATE))
654 fprintf(stderr, "%s in\n", __FUNCTION__);
655
656 if (!ctx->DrawBuffer)
657 return;
658
659 switch ( ctx->DrawBuffer->_ColorDrawBufferMask[0] ) {
660 case BUFFER_BIT_FRONT_LEFT:
661 VIA_FLUSH_DMA(vmesa);
662 vmesa->drawBuffer = &vmesa->front;
663 FALLBACK(vmesa, VIA_FALLBACK_DRAW_BUFFER, GL_FALSE);
664 break;
665 case BUFFER_BIT_BACK_LEFT:
666 VIA_FLUSH_DMA(vmesa);
667 vmesa->drawBuffer = &vmesa->back;
668 FALLBACK(vmesa, VIA_FALLBACK_DRAW_BUFFER, GL_FALSE);
669 break;
670 default:
671 FALLBACK(vmesa, VIA_FALLBACK_DRAW_BUFFER, GL_TRUE);
672 return;
673 }
674
675
676 viaXMesaWindowMoved(vmesa);
677 }
678
679 static void viaClearColor(GLcontext *ctx, const GLfloat color[4])
680 {
681 struct via_context *vmesa = VIA_CONTEXT(ctx);
682 GLubyte pcolor[4];
683 CLAMPED_FLOAT_TO_UBYTE(pcolor[0], color[0]);
684 CLAMPED_FLOAT_TO_UBYTE(pcolor[1], color[1]);
685 CLAMPED_FLOAT_TO_UBYTE(pcolor[2], color[2]);
686 CLAMPED_FLOAT_TO_UBYTE(pcolor[3], color[3]);
687 vmesa->ClearColor = viaPackColor(vmesa->viaScreen->bitsPerPixel,
688 pcolor[0], pcolor[1],
689 pcolor[2], pcolor[3]);
690 }
691
692 #define WRITEMASK_ALPHA_SHIFT 31
693 #define WRITEMASK_RED_SHIFT 30
694 #define WRITEMASK_GREEN_SHIFT 29
695 #define WRITEMASK_BLUE_SHIFT 28
696
697 static void viaColorMask(GLcontext *ctx,
698 GLboolean r, GLboolean g,
699 GLboolean b, GLboolean a)
700 {
701 struct via_context *vmesa = VIA_CONTEXT( ctx );
702
703 if (VIA_DEBUG & DEBUG_STATE)
704 fprintf(stderr, "%s r(%d) g(%d) b(%d) a(%d)\n", __FUNCTION__, r, g, b, a);
705
706 vmesa->ClearMask = (((!r) << WRITEMASK_RED_SHIFT) |
707 ((!g) << WRITEMASK_GREEN_SHIFT) |
708 ((!b) << WRITEMASK_BLUE_SHIFT) |
709 ((!a) << WRITEMASK_ALPHA_SHIFT));
710 }
711
712
713
714 /* This hardware just isn't capable of private back buffers without
715 * glitches and/or a hefty locking scheme.
716 */
717 void viaCalcViewport(GLcontext *ctx)
718 {
719 struct via_context *vmesa = VIA_CONTEXT(ctx);
720 __DRIdrawablePrivate *dPriv = vmesa->driDrawable;
721 struct via_renderbuffer *const vrb =
722 (struct via_renderbuffer *) dPriv->driverPrivate;
723 const GLfloat *v = ctx->Viewport._WindowMap.m;
724 GLfloat *m = vmesa->ViewportMatrix.m;
725
726 m[MAT_SX] = v[MAT_SX];
727 m[MAT_TX] = v[MAT_TX] + vrb->drawX + SUBPIXEL_X;
728 m[MAT_SY] = - v[MAT_SY];
729 m[MAT_TY] = - v[MAT_TY] + vrb->drawY + SUBPIXEL_Y + vrb->drawH;
730 m[MAT_SZ] = v[MAT_SZ] * (1.0 / vmesa->depth_max);
731 m[MAT_TZ] = v[MAT_TZ] * (1.0 / vmesa->depth_max);
732 }
733
734 static void viaViewport(GLcontext *ctx,
735 GLint x, GLint y,
736 GLsizei width, GLsizei height)
737 {
738 viaCalcViewport(ctx);
739 }
740
741 static void viaDepthRange(GLcontext *ctx,
742 GLclampd nearval, GLclampd farval)
743 {
744 viaCalcViewport(ctx);
745 }
746
747 void viaInitState(GLcontext *ctx)
748 {
749 struct via_context *vmesa = VIA_CONTEXT(ctx);
750
751 vmesa->regCmdB = HC_ACMD_HCmdB;
752 vmesa->regEnable = HC_HenCW_MASK;
753
754 /* Mesa should do this for us:
755 */
756
757 ctx->Driver.BlendEquationSeparate( ctx,
758 ctx->Color.BlendEquationRGB,
759 ctx->Color.BlendEquationA);
760
761 ctx->Driver.BlendFuncSeparate( ctx,
762 ctx->Color.BlendSrcRGB,
763 ctx->Color.BlendDstRGB,
764 ctx->Color.BlendSrcA,
765 ctx->Color.BlendDstA);
766
767 ctx->Driver.Scissor( ctx, ctx->Scissor.X, ctx->Scissor.Y,
768 ctx->Scissor.Width, ctx->Scissor.Height );
769
770 ctx->Driver.DrawBuffer( ctx, ctx->Color.DrawBuffer[0] );
771 }
772
773 /**
774 * Convert S and T texture coordinate wrap modes to hardware bits.
775 */
776 static uint32_t
777 get_wrap_mode( GLenum sWrap, GLenum tWrap )
778 {
779 uint32_t v = 0;
780
781
782 switch( sWrap ) {
783 case GL_REPEAT:
784 v |= HC_HTXnMPMD_Srepeat;
785 break;
786 case GL_CLAMP:
787 case GL_CLAMP_TO_EDGE:
788 v |= HC_HTXnMPMD_Sclamp;
789 break;
790 case GL_MIRRORED_REPEAT:
791 v |= HC_HTXnMPMD_Smirror;
792 break;
793 }
794
795 switch( tWrap ) {
796 case GL_REPEAT:
797 v |= HC_HTXnMPMD_Trepeat;
798 break;
799 case GL_CLAMP:
800 case GL_CLAMP_TO_EDGE:
801 v |= HC_HTXnMPMD_Tclamp;
802 break;
803 case GL_MIRRORED_REPEAT:
804 v |= HC_HTXnMPMD_Tmirror;
805 break;
806 }
807
808 return v;
809 }
810
811 static uint32_t
812 get_minmag_filter( GLenum min, GLenum mag )
813 {
814 uint32_t v = 0;
815
816 switch (min) {
817 case GL_NEAREST:
818 v = HC_HTXnFLSs_Nearest |
819 HC_HTXnFLTs_Nearest;
820 break;
821 case GL_LINEAR:
822 v = HC_HTXnFLSs_Linear |
823 HC_HTXnFLTs_Linear;
824 break;
825 case GL_NEAREST_MIPMAP_NEAREST:
826 v = HC_HTXnFLSs_Nearest |
827 HC_HTXnFLTs_Nearest;
828 v |= HC_HTXnFLDs_Nearest;
829 break;
830 case GL_LINEAR_MIPMAP_NEAREST:
831 v = HC_HTXnFLSs_Linear |
832 HC_HTXnFLTs_Linear;
833 v |= HC_HTXnFLDs_Nearest;
834 break;
835 case GL_NEAREST_MIPMAP_LINEAR:
836 v = HC_HTXnFLSs_Nearest |
837 HC_HTXnFLTs_Nearest;
838 v |= HC_HTXnFLDs_Linear;
839 break;
840 case GL_LINEAR_MIPMAP_LINEAR:
841 v = HC_HTXnFLSs_Linear |
842 HC_HTXnFLTs_Linear;
843 v |= HC_HTXnFLDs_Linear;
844 break;
845 default:
846 break;
847 }
848
849 switch (mag) {
850 case GL_LINEAR:
851 v |= HC_HTXnFLSe_Linear |
852 HC_HTXnFLTe_Linear;
853 break;
854 case GL_NEAREST:
855 v |= HC_HTXnFLSe_Nearest |
856 HC_HTXnFLTe_Nearest;
857 break;
858 default:
859 break;
860 }
861
862 return v;
863 }
864
865
866 static GLboolean viaChooseTextureState(GLcontext *ctx)
867 {
868 struct via_context *vmesa = VIA_CONTEXT(ctx);
869 struct gl_texture_unit *texUnit0 = &ctx->Texture.Unit[0];
870 struct gl_texture_unit *texUnit1 = &ctx->Texture.Unit[1];
871
872 if (texUnit0->_ReallyEnabled || texUnit1->_ReallyEnabled) {
873 vmesa->regEnable |= HC_HenTXMP_MASK | HC_HenTXCH_MASK | HC_HenTXPP_MASK;
874
875 if (texUnit0->_ReallyEnabled) {
876 struct gl_texture_object *texObj = texUnit0->_Current;
877
878 vmesa->regHTXnTB[0] = get_minmag_filter( texObj->MinFilter,
879 texObj->MagFilter );
880
881 vmesa->regHTXnMPMD[0] &= ~(HC_HTXnMPMD_SMASK | HC_HTXnMPMD_TMASK);
882 vmesa->regHTXnMPMD[0] |= get_wrap_mode( texObj->WrapS,
883 texObj->WrapT );
884
885 vmesa->regHTXnTB[0] &= ~(HC_HTXnTB_TBC_S | HC_HTXnTB_TBC_T);
886 if (texObj->Image[0][texObj->BaseLevel]->Border > 0) {
887 vmesa->regHTXnTB[0] |= (HC_HTXnTB_TBC_S | HC_HTXnTB_TBC_T);
888 vmesa->regHTXnTBC[0] =
889 PACK_COLOR_888(FLOAT_TO_UBYTE(texObj->BorderColor[0]),
890 FLOAT_TO_UBYTE(texObj->BorderColor[1]),
891 FLOAT_TO_UBYTE(texObj->BorderColor[2]));
892 vmesa->regHTXnTRAH[0] = FLOAT_TO_UBYTE(texObj->BorderColor[3]);
893 }
894
895 if (texUnit0->LodBias != 0.0f) {
896 GLuint b = viaComputeLodBias(texUnit0->LodBias);
897 vmesa->regHTXnTB[0] &= ~HC_HTXnFLDs_MASK;
898 vmesa->regHTXnTB[0] |= HC_HTXnFLDs_ConstLOD;
899 vmesa->regHTXnCLOD[0] = (b&0x1f) | (((~b)&0x1f)<<10); /* FIXME */
900 }
901
902 if (!viaTexCombineState( vmesa, texUnit0->_CurrentCombine, 0 )) {
903 if (VIA_DEBUG & DEBUG_TEXTURE)
904 fprintf(stderr, "viaTexCombineState failed for unit 0\n");
905 return GL_FALSE;
906 }
907 }
908
909 if (texUnit1->_ReallyEnabled) {
910 struct gl_texture_object *texObj = texUnit1->_Current;
911
912 vmesa->regHTXnTB[1] = get_minmag_filter( texObj->MinFilter,
913 texObj->MagFilter );
914 vmesa->regHTXnMPMD[1] &= ~(HC_HTXnMPMD_SMASK | HC_HTXnMPMD_TMASK);
915 vmesa->regHTXnMPMD[1] |= get_wrap_mode( texObj->WrapS,
916 texObj->WrapT );
917
918 vmesa->regHTXnTB[1] &= ~(HC_HTXnTB_TBC_S | HC_HTXnTB_TBC_T);
919 if (texObj->Image[0][texObj->BaseLevel]->Border > 0) {
920 vmesa->regHTXnTB[1] |= (HC_HTXnTB_TBC_S | HC_HTXnTB_TBC_T);
921 vmesa->regHTXnTBC[1] =
922 PACK_COLOR_888(FLOAT_TO_UBYTE(texObj->BorderColor[0]),
923 FLOAT_TO_UBYTE(texObj->BorderColor[1]),
924 FLOAT_TO_UBYTE(texObj->BorderColor[2]));
925 vmesa->regHTXnTRAH[1] = FLOAT_TO_UBYTE(texObj->BorderColor[3]);
926 }
927
928
929 if (texUnit1->LodBias != 0.0f) {
930 GLuint b = viaComputeLodBias(texUnit1->LodBias);
931 vmesa->regHTXnTB[1] &= ~HC_HTXnFLDs_MASK;
932 vmesa->regHTXnTB[1] |= HC_HTXnFLDs_ConstLOD;
933 vmesa->regHTXnCLOD[1] = (b&0x1f) | (((~b)&0x1f)<<10); /* FIXME */
934 }
935
936 if (!viaTexCombineState( vmesa, texUnit1->_CurrentCombine, 1 )) {
937 if (VIA_DEBUG & DEBUG_TEXTURE)
938 fprintf(stderr, "viaTexCombineState failed for unit 1\n");
939 return GL_FALSE;
940 }
941 }
942 }
943 else {
944 vmesa->regEnable &= ~(HC_HenTXMP_MASK | HC_HenTXCH_MASK |
945 HC_HenTXPP_MASK);
946 }
947
948 return GL_TRUE;
949 }
950
951 static void viaChooseColorState(GLcontext *ctx)
952 {
953 struct via_context *vmesa = VIA_CONTEXT(ctx);
954 GLenum s = ctx->Color.BlendSrcRGB;
955 GLenum d = ctx->Color.BlendDstRGB;
956
957 /* The HW's blending equation is:
958 * (Ca * FCa + Cbias + Cb * FCb) << Cshift
959 */
960
961 if (ctx->Color.BlendEnabled) {
962 vmesa->regEnable |= HC_HenABL_MASK;
963 /* Ca -- always from source color.
964 */
965 vmesa->regHABLCsat = HC_HABLCsat_MASK | HC_HABLCa_OPC | HC_HABLCa_Csrc;
966 /* Aa -- always from source alpha.
967 */
968 vmesa->regHABLAsat = HC_HABLAsat_MASK | HC_HABLAa_OPA | HC_HABLAa_Asrc;
969 /* FCa -- depend on following condition.
970 * FAa -- depend on following condition.
971 */
972 switch (s) {
973 case GL_ZERO:
974 /* (0, 0, 0, 0)
975 */
976 vmesa->regHABLCsat |= HC_HABLFCa_OPC | HC_HABLFCa_HABLRCa;
977 vmesa->regHABLAsat |= HC_HABLFAa_OPA | HC_HABLFAa_HABLFRA;
978 vmesa->regHABLRFCa = 0x0;
979 vmesa->regHABLRAa = 0x0;
980 break;
981 case GL_ONE:
982 /* (1, 1, 1, 1)
983 */
984 vmesa->regHABLCsat |= HC_HABLFCa_InvOPC | HC_HABLFCa_HABLRCa;
985 vmesa->regHABLAsat |= HC_HABLFAa_InvOPA | HC_HABLFAa_HABLFRA;
986 vmesa->regHABLRFCa = 0x0;
987 vmesa->regHABLRAa = 0x0;
988 break;
989 case GL_SRC_COLOR:
990 /* (Rs, Gs, Bs, As)
991 */
992 vmesa->regHABLCsat |= HC_HABLFCa_OPC | HC_HABLFCa_Csrc;
993 vmesa->regHABLAsat |= HC_HABLFAa_OPA | HC_HABLFAa_Asrc;
994 break;
995 case GL_ONE_MINUS_SRC_COLOR:
996 /* (1, 1, 1, 1) - (Rs, Gs, Bs, As)
997 */
998 vmesa->regHABLCsat |= HC_HABLFCa_InvOPC | HC_HABLFCa_Csrc;
999 vmesa->regHABLAsat |= HC_HABLFAa_InvOPA | HC_HABLFAa_Asrc;
1000 break;
1001 case GL_DST_COLOR:
1002 /* (Rd, Gd, Bd, Ad)
1003 */
1004 vmesa->regHABLCsat |= HC_HABLFCa_OPC | HC_HABLFCa_Cdst;
1005 vmesa->regHABLAsat |= HC_HABLFAa_OPA | HC_HABLFAa_Adst;
1006 break;
1007 case GL_ONE_MINUS_DST_COLOR:
1008 /* (1, 1, 1, 1) - (Rd, Gd, Bd, Ad)
1009 */
1010 vmesa->regHABLCsat |= HC_HABLFCa_InvOPC | HC_HABLFCa_Cdst;
1011 vmesa->regHABLAsat |= HC_HABLFAa_InvOPA | HC_HABLFAa_Adst;
1012 break;
1013 case GL_SRC_ALPHA:
1014 /* (As, As, As, As)
1015 */
1016 vmesa->regHABLCsat |= HC_HABLFCa_OPC | HC_HABLFCa_Asrc;
1017 vmesa->regHABLAsat |= HC_HABLFAa_OPA | HC_HABLFAa_Asrc;
1018 break;
1019 case GL_ONE_MINUS_SRC_ALPHA:
1020 /* (1, 1, 1, 1) - (As, As, As, As)
1021 */
1022 vmesa->regHABLCsat |= HC_HABLFCa_InvOPC | HC_HABLFCa_Asrc;
1023 vmesa->regHABLAsat |= HC_HABLFAa_InvOPA | HC_HABLFAa_Asrc;
1024 break;
1025 case GL_DST_ALPHA:
1026 {
1027 if (vmesa->viaScreen->bitsPerPixel == 16) {
1028 /* (1, 1, 1, 1)
1029 */
1030 vmesa->regHABLCsat |= (HC_HABLFCa_InvOPC |
1031 HC_HABLFCa_HABLRCa);
1032 vmesa->regHABLAsat |= (HC_HABLFAa_InvOPA |
1033 HC_HABLFAa_HABLFRA);
1034 vmesa->regHABLRFCa = 0x0;
1035 vmesa->regHABLRAa = 0x0;
1036 }
1037 else {
1038 /* (Ad, Ad, Ad, Ad)
1039 */
1040 vmesa->regHABLCsat |= HC_HABLFCa_OPC | HC_HABLFCa_Adst;
1041 vmesa->regHABLAsat |= HC_HABLFAa_OPA | HC_HABLFAa_Adst;
1042 }
1043 }
1044 break;
1045 case GL_ONE_MINUS_DST_ALPHA:
1046 {
1047 if (vmesa->viaScreen->bitsPerPixel == 16) {
1048 /* (1, 1, 1, 1) - (1, 1, 1, 1) = (0, 0, 0, 0)
1049 */
1050 vmesa->regHABLCsat |= HC_HABLFCa_OPC | HC_HABLFCa_HABLRCa;
1051 vmesa->regHABLAsat |= HC_HABLFAa_OPA | HC_HABLFAa_HABLFRA;
1052 vmesa->regHABLRFCa = 0x0;
1053 vmesa->regHABLRAa = 0x0;
1054 }
1055 else {
1056 /* (1, 1, 1, 1) - (Ad, Ad, Ad, Ad)
1057 */
1058 vmesa->regHABLCsat |= HC_HABLFCa_InvOPC | HC_HABLFCa_Adst;
1059 vmesa->regHABLAsat |= HC_HABLFAa_InvOPA | HC_HABLFAa_Adst;
1060 }
1061 }
1062 break;
1063 case GL_SRC_ALPHA_SATURATE:
1064 {
1065 if (vmesa->viaScreen->bitsPerPixel == 16) {
1066 /* (f, f, f, 1), f = min(As, 1 - Ad) = min(As, 1 - 1) = 0
1067 * So (f, f, f, 1) = (0, 0, 0, 1)
1068 */
1069 vmesa->regHABLCsat |= HC_HABLFCa_OPC | HC_HABLFCa_HABLRCa;
1070 vmesa->regHABLAsat |= (HC_HABLFAa_InvOPA |
1071 HC_HABLFAa_HABLFRA);
1072 vmesa->regHABLRFCa = 0x0;
1073 vmesa->regHABLRAa = 0x0;
1074 }
1075 else {
1076 /* (f, f, f, 1), f = min(As, 1 - Ad)
1077 */
1078 vmesa->regHABLCsat |= (HC_HABLFCa_OPC |
1079 HC_HABLFCa_mimAsrcInvAdst);
1080 vmesa->regHABLAsat |= (HC_HABLFAa_InvOPA |
1081 HC_HABLFAa_HABLFRA);
1082 vmesa->regHABLRFCa = 0x0;
1083 vmesa->regHABLRAa = 0x0;
1084 }
1085 }
1086 break;
1087 }
1088
1089 /* Op is add.
1090 */
1091
1092 /* bias is 0.
1093 */
1094 vmesa->regHABLCsat |= HC_HABLCbias_HABLRCbias;
1095 vmesa->regHABLAsat |= HC_HABLAbias_HABLRAbias;
1096
1097 /* Cb -- always from destination color.
1098 */
1099 vmesa->regHABLCop = HC_HABLCb_OPC | HC_HABLCb_Cdst;
1100 /* Ab -- always from destination alpha.
1101 */
1102 vmesa->regHABLAop = HC_HABLAb_OPA | HC_HABLAb_Adst;
1103 /* FCb -- depend on following condition.
1104 */
1105 switch (d) {
1106 case GL_ZERO:
1107 /* (0, 0, 0, 0)
1108 */
1109 vmesa->regHABLCop |= HC_HABLFCb_OPC | HC_HABLFCb_HABLRCb;
1110 vmesa->regHABLAop |= HC_HABLFAb_OPA | HC_HABLFAb_HABLFRA;
1111 vmesa->regHABLRFCb = 0x0;
1112 vmesa->regHABLRAb = 0x0;
1113 break;
1114 case GL_ONE:
1115 /* (1, 1, 1, 1)
1116 */
1117 vmesa->regHABLCop |= HC_HABLFCb_InvOPC | HC_HABLFCb_HABLRCb;
1118 vmesa->regHABLAop |= HC_HABLFAb_InvOPA | HC_HABLFAb_HABLFRA;
1119 vmesa->regHABLRFCb = 0x0;
1120 vmesa->regHABLRAb = 0x0;
1121 break;
1122 case GL_SRC_COLOR:
1123 /* (Rs, Gs, Bs, As)
1124 */
1125 vmesa->regHABLCop |= HC_HABLFCb_OPC | HC_HABLFCb_Csrc;
1126 vmesa->regHABLAop |= HC_HABLFAb_OPA | HC_HABLFAb_Asrc;
1127 break;
1128 case GL_ONE_MINUS_SRC_COLOR:
1129 /* (1, 1, 1, 1) - (Rs, Gs, Bs, As)
1130 */
1131 vmesa->regHABLCop |= HC_HABLFCb_InvOPC | HC_HABLFCb_Csrc;
1132 vmesa->regHABLAop |= HC_HABLFAb_InvOPA | HC_HABLFAb_Asrc;
1133 break;
1134 case GL_DST_COLOR:
1135 /* (Rd, Gd, Bd, Ad)
1136 */
1137 vmesa->regHABLCop |= HC_HABLFCb_OPC | HC_HABLFCb_Cdst;
1138 vmesa->regHABLAop |= HC_HABLFAb_OPA | HC_HABLFAb_Adst;
1139 break;
1140 case GL_ONE_MINUS_DST_COLOR:
1141 /* (1, 1, 1, 1) - (Rd, Gd, Bd, Ad)
1142 */
1143 vmesa->regHABLCop |= HC_HABLFCb_InvOPC | HC_HABLFCb_Cdst;
1144 vmesa->regHABLAop |= HC_HABLFAb_InvOPA | HC_HABLFAb_Adst;
1145 break;
1146 case GL_SRC_ALPHA:
1147 /* (As, As, As, As)
1148 */
1149 vmesa->regHABLCop |= HC_HABLFCb_OPC | HC_HABLFCb_Asrc;
1150 vmesa->regHABLAop |= HC_HABLFAb_OPA | HC_HABLFAb_Asrc;
1151 break;
1152 case GL_ONE_MINUS_SRC_ALPHA:
1153 /* (1, 1, 1, 1) - (As, As, As, As)
1154 */
1155 vmesa->regHABLCop |= HC_HABLFCb_InvOPC | HC_HABLFCb_Asrc;
1156 vmesa->regHABLAop |= HC_HABLFAb_InvOPA | HC_HABLFAb_Asrc;
1157 break;
1158 case GL_DST_ALPHA:
1159 {
1160 if (vmesa->viaScreen->bitsPerPixel == 16) {
1161 /* (1, 1, 1, 1)
1162 */
1163 vmesa->regHABLCop |= HC_HABLFCb_InvOPC | HC_HABLFCb_HABLRCb;
1164 vmesa->regHABLAop |= HC_HABLFAb_InvOPA | HC_HABLFAb_HABLFRA;
1165 vmesa->regHABLRFCb = 0x0;
1166 vmesa->regHABLRAb = 0x0;
1167 }
1168 else {
1169 /* (Ad, Ad, Ad, Ad)
1170 */
1171 vmesa->regHABLCop |= HC_HABLFCb_OPC | HC_HABLFCb_Adst;
1172 vmesa->regHABLAop |= HC_HABLFAb_OPA | HC_HABLFAb_Adst;
1173 }
1174 }
1175 break;
1176 case GL_ONE_MINUS_DST_ALPHA:
1177 {
1178 if (vmesa->viaScreen->bitsPerPixel == 16) {
1179 /* (1, 1, 1, 1) - (1, 1, 1, 1) = (0, 0, 0, 0)
1180 */
1181 vmesa->regHABLCop |= HC_HABLFCb_OPC | HC_HABLFCb_HABLRCb;
1182 vmesa->regHABLAop |= HC_HABLFAb_OPA | HC_HABLFAb_HABLFRA;
1183 vmesa->regHABLRFCb = 0x0;
1184 vmesa->regHABLRAb = 0x0;
1185 }
1186 else {
1187 /* (1, 1, 1, 1) - (Ad, Ad, Ad, Ad)
1188 */
1189 vmesa->regHABLCop |= HC_HABLFCb_InvOPC | HC_HABLFCb_Adst;
1190 vmesa->regHABLAop |= HC_HABLFAb_InvOPA | HC_HABLFAb_Adst;
1191 }
1192 }
1193 break;
1194 default:
1195 vmesa->regHABLCop |= HC_HABLFCb_OPC | HC_HABLFCb_HABLRCb;
1196 vmesa->regHABLAop |= HC_HABLFAb_OPA | HC_HABLFAb_HABLFRA;
1197 vmesa->regHABLRFCb = 0x0;
1198 vmesa->regHABLRAb = 0x0;
1199 break;
1200 }
1201
1202 if (vmesa->viaScreen->bitsPerPixel <= 16)
1203 vmesa->regEnable &= ~HC_HenDT_MASK;
1204
1205 }
1206 else {
1207 vmesa->regEnable &= (~HC_HenABL_MASK);
1208 }
1209
1210 if (ctx->Color.AlphaEnabled) {
1211 vmesa->regEnable |= HC_HenAT_MASK;
1212 vmesa->regHATMD = FLOAT_TO_UBYTE(ctx->Color.AlphaRef) |
1213 ((ctx->Color.AlphaFunc - GL_NEVER) << 8);
1214 }
1215 else {
1216 vmesa->regEnable &= (~HC_HenAT_MASK);
1217 }
1218
1219 if (ctx->Color.DitherFlag && (vmesa->viaScreen->bitsPerPixel < 32)) {
1220 if (ctx->Color.BlendEnabled) {
1221 vmesa->regEnable &= ~HC_HenDT_MASK;
1222 }
1223 else {
1224 vmesa->regEnable |= HC_HenDT_MASK;
1225 }
1226 }
1227
1228
1229 vmesa->regEnable &= ~HC_HenDT_MASK;
1230
1231 if (ctx->Color.ColorLogicOpEnabled)
1232 vmesa->regHROP = ROP[ctx->Color.LogicOp & 0xF];
1233 else
1234 vmesa->regHROP = HC_HROP_P;
1235
1236 vmesa->regHFBBMSKL = PACK_COLOR_888(ctx->Color.ColorMask[0],
1237 ctx->Color.ColorMask[1],
1238 ctx->Color.ColorMask[2]);
1239 vmesa->regHROP |= ctx->Color.ColorMask[3];
1240
1241 if (ctx->Color.ColorMask[3])
1242 vmesa->regEnable |= HC_HenAW_MASK;
1243 else
1244 vmesa->regEnable &= ~HC_HenAW_MASK;
1245 }
1246
1247 static void viaChooseFogState(GLcontext *ctx)
1248 {
1249 struct via_context *vmesa = VIA_CONTEXT(ctx);
1250
1251 if (ctx->Fog.Enabled) {
1252 GLubyte r, g, b, a;
1253
1254 vmesa->regEnable |= HC_HenFOG_MASK;
1255
1256 /* Use fog equation 0 (OpenGL's default) & local fog.
1257 */
1258 vmesa->regHFogLF = 0x0;
1259
1260 r = (GLubyte)(ctx->Fog.Color[0] * 255.0F);
1261 g = (GLubyte)(ctx->Fog.Color[1] * 255.0F);
1262 b = (GLubyte)(ctx->Fog.Color[2] * 255.0F);
1263 a = (GLubyte)(ctx->Fog.Color[3] * 255.0F);
1264 vmesa->regHFogCL = (r << 16) | (g << 8) | b;
1265 vmesa->regHFogCH = a;
1266 }
1267 else {
1268 vmesa->regEnable &= ~HC_HenFOG_MASK;
1269 }
1270 }
1271
1272 static void viaChooseDepthState(GLcontext *ctx)
1273 {
1274 struct via_context *vmesa = VIA_CONTEXT(ctx);
1275 if (ctx->Depth.Test) {
1276 vmesa->regEnable |= HC_HenZT_MASK;
1277 if (ctx->Depth.Mask)
1278 vmesa->regEnable |= HC_HenZW_MASK;
1279 else
1280 vmesa->regEnable &= (~HC_HenZW_MASK);
1281 vmesa->regHZWTMD = (ctx->Depth.Func - GL_NEVER) << 16;
1282
1283 }
1284 else {
1285 vmesa->regEnable &= ~HC_HenZT_MASK;
1286
1287 /*=* [DBG] racer : can't display cars in car selection menu *=*/
1288 /*if (ctx->Depth.Mask)
1289 vmesa->regEnable |= HC_HenZW_MASK;
1290 else
1291 vmesa->regEnable &= (~HC_HenZW_MASK);*/
1292 vmesa->regEnable &= (~HC_HenZW_MASK);
1293 }
1294 }
1295
1296 static void viaChooseLineState(GLcontext *ctx)
1297 {
1298 struct via_context *vmesa = VIA_CONTEXT(ctx);
1299
1300 if (ctx->Line.StippleFlag) {
1301 vmesa->regEnable |= HC_HenLP_MASK;
1302 vmesa->regHLP = ctx->Line.StipplePattern;
1303 vmesa->regHLPRF = ctx->Line.StippleFactor;
1304 }
1305 else {
1306 vmesa->regEnable &= ~HC_HenLP_MASK;
1307 }
1308 }
1309
1310 static void viaChoosePolygonState(GLcontext *ctx)
1311 {
1312 struct via_context *vmesa = VIA_CONTEXT(ctx);
1313
1314 #if 0
1315 /* Polygon stipple is broken - see via_state.c
1316 */
1317 if (ctx->Polygon.StippleFlag) {
1318 vmesa->regEnable |= HC_HenSP_MASK;
1319 }
1320 else {
1321 vmesa->regEnable &= ~HC_HenSP_MASK;
1322 }
1323 #else
1324 FALLBACK(vmesa, VIA_FALLBACK_POLY_STIPPLE,
1325 ctx->Polygon.StippleFlag);
1326 #endif
1327
1328 if (ctx->Polygon.CullFlag) {
1329 vmesa->regEnable |= HC_HenFBCull_MASK;
1330 }
1331 else {
1332 vmesa->regEnable &= ~HC_HenFBCull_MASK;
1333 }
1334 }
1335
1336 static void viaChooseStencilState(GLcontext *ctx)
1337 {
1338 struct via_context *vmesa = VIA_CONTEXT(ctx);
1339
1340 if (ctx->Stencil.Enabled) {
1341 GLuint temp;
1342
1343 vmesa->regEnable |= HC_HenST_MASK;
1344 temp = (ctx->Stencil.Ref[0] & 0xFF) << HC_HSTREF_SHIFT;
1345 temp |= 0xFF << HC_HSTOPMSK_SHIFT;
1346 temp |= (ctx->Stencil.ValueMask[0] & 0xFF);
1347 vmesa->regHSTREF = temp;
1348
1349 temp = (ctx->Stencil.Function[0] - GL_NEVER) << 16;
1350
1351 switch (ctx->Stencil.FailFunc[0]) {
1352 case GL_KEEP:
1353 temp |= HC_HSTOPSF_KEEP;
1354 break;
1355 case GL_ZERO:
1356 temp |= HC_HSTOPSF_ZERO;
1357 break;
1358 case GL_REPLACE:
1359 temp |= HC_HSTOPSF_REPLACE;
1360 break;
1361 case GL_INVERT:
1362 temp |= HC_HSTOPSF_INVERT;
1363 break;
1364 case GL_INCR:
1365 temp |= HC_HSTOPSF_INCR;
1366 break;
1367 case GL_DECR:
1368 temp |= HC_HSTOPSF_DECR;
1369 break;
1370 }
1371
1372 switch (ctx->Stencil.ZFailFunc[0]) {
1373 case GL_KEEP:
1374 temp |= HC_HSTOPSPZF_KEEP;
1375 break;
1376 case GL_ZERO:
1377 temp |= HC_HSTOPSPZF_ZERO;
1378 break;
1379 case GL_REPLACE:
1380 temp |= HC_HSTOPSPZF_REPLACE;
1381 break;
1382 case GL_INVERT:
1383 temp |= HC_HSTOPSPZF_INVERT;
1384 break;
1385 case GL_INCR:
1386 temp |= HC_HSTOPSPZF_INCR;
1387 break;
1388 case GL_DECR:
1389 temp |= HC_HSTOPSPZF_DECR;
1390 break;
1391 }
1392
1393 switch (ctx->Stencil.ZPassFunc[0]) {
1394 case GL_KEEP:
1395 temp |= HC_HSTOPSPZP_KEEP;
1396 break;
1397 case GL_ZERO:
1398 temp |= HC_HSTOPSPZP_ZERO;
1399 break;
1400 case GL_REPLACE:
1401 temp |= HC_HSTOPSPZP_REPLACE;
1402 break;
1403 case GL_INVERT:
1404 temp |= HC_HSTOPSPZP_INVERT;
1405 break;
1406 case GL_INCR:
1407 temp |= HC_HSTOPSPZP_INCR;
1408 break;
1409 case GL_DECR:
1410 temp |= HC_HSTOPSPZP_DECR;
1411 break;
1412 }
1413 vmesa->regHSTMD = temp;
1414 }
1415 else {
1416 vmesa->regEnable &= ~HC_HenST_MASK;
1417 }
1418 }
1419
1420
1421
1422 static void viaChooseTriangle(GLcontext *ctx)
1423 {
1424 struct via_context *vmesa = VIA_CONTEXT(ctx);
1425
1426 if (ctx->Polygon.CullFlag == GL_TRUE) {
1427 switch (ctx->Polygon.CullFaceMode) {
1428 case GL_FRONT:
1429 if (ctx->Polygon.FrontFace == GL_CCW)
1430 vmesa->regCmdB |= HC_HBFace_MASK;
1431 else
1432 vmesa->regCmdB &= ~HC_HBFace_MASK;
1433 break;
1434 case GL_BACK:
1435 if (ctx->Polygon.FrontFace == GL_CW)
1436 vmesa->regCmdB |= HC_HBFace_MASK;
1437 else
1438 vmesa->regCmdB &= ~HC_HBFace_MASK;
1439 break;
1440 case GL_FRONT_AND_BACK:
1441 return;
1442 }
1443 }
1444 }
1445
1446 void viaValidateState( GLcontext *ctx )
1447 {
1448 struct via_context *vmesa = VIA_CONTEXT(ctx);
1449
1450 if (vmesa->newState & _NEW_TEXTURE) {
1451 GLboolean ok = (viaChooseTextureState(ctx) &&
1452 viaUpdateTextureState(ctx));
1453
1454 FALLBACK(vmesa, VIA_FALLBACK_TEXTURE, !ok);
1455 }
1456
1457 if (vmesa->newState & _NEW_COLOR)
1458 viaChooseColorState(ctx);
1459
1460 if (vmesa->newState & _NEW_DEPTH)
1461 viaChooseDepthState(ctx);
1462
1463 if (vmesa->newState & _NEW_FOG)
1464 viaChooseFogState(ctx);
1465
1466 if (vmesa->newState & _NEW_LINE)
1467 viaChooseLineState(ctx);
1468
1469 if (vmesa->newState & (_NEW_POLYGON | _NEW_POLYGONSTIPPLE)) {
1470 viaChoosePolygonState(ctx);
1471 viaChooseTriangle(ctx);
1472 }
1473
1474 if ((vmesa->newState & _NEW_STENCIL) && vmesa->have_hw_stencil)
1475 viaChooseStencilState(ctx);
1476
1477 if (ctx->_TriangleCaps & DD_SEPARATE_SPECULAR)
1478 vmesa->regEnable |= HC_HenCS_MASK;
1479 else
1480 vmesa->regEnable &= ~HC_HenCS_MASK;
1481
1482 if (ctx->Point.SmoothFlag ||
1483 ctx->Line.SmoothFlag ||
1484 ctx->Polygon.SmoothFlag)
1485 vmesa->regEnable |= HC_HenAA_MASK;
1486 else
1487 vmesa->regEnable &= ~HC_HenAA_MASK;
1488
1489 vmesa->newEmitState |= vmesa->newState;
1490 vmesa->newState = 0;
1491 }
1492
1493 static void viaInvalidateState(GLcontext *ctx, GLuint newState)
1494 {
1495 struct via_context *vmesa = VIA_CONTEXT(ctx);
1496
1497 VIA_FINISH_PRIM( vmesa );
1498 vmesa->newState |= newState;
1499
1500 _swrast_InvalidateState(ctx, newState);
1501 _swsetup_InvalidateState(ctx, newState);
1502 _vbo_InvalidateState(ctx, newState);
1503 _tnl_InvalidateState(ctx, newState);
1504 }
1505
1506 void viaInitStateFuncs(GLcontext *ctx)
1507 {
1508 /* Callbacks for internal Mesa events.
1509 */
1510 ctx->Driver.UpdateState = viaInvalidateState;
1511
1512 /* API callbacks
1513 */
1514 ctx->Driver.BlendEquationSeparate = viaBlendEquationSeparate;
1515 ctx->Driver.BlendFuncSeparate = viaBlendFuncSeparate;
1516 ctx->Driver.ClearColor = viaClearColor;
1517 ctx->Driver.ColorMask = viaColorMask;
1518 ctx->Driver.DrawBuffer = viaDrawBuffer;
1519 ctx->Driver.RenderMode = viaRenderMode;
1520 ctx->Driver.Scissor = viaScissor;
1521 ctx->Driver.DepthRange = viaDepthRange;
1522 ctx->Driver.Viewport = viaViewport;
1523 ctx->Driver.Enable = viaEnable;
1524
1525 /* XXX this should go away */
1526 ctx->Driver.ResizeBuffers = viaReAllocateBuffers;
1527 }