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radeon/r200/r300: cleanup some of the renderbuffer code
[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 "main/glheader.h"
28 #include "main/context.h"
29 #include "main/macros.h"
30 #include "main/colormac.h"
31 #include "main/enums.h"
32 #include "main/dd.h"
33 #include "main/mm.h"
34
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 if (ctx->DrawBuffer->_NumColorDrawBuffers != 1) {
660 FALLBACK(vmesa, VIA_FALLBACK_DRAW_BUFFER, GL_TRUE);
661 return;
662 }
663
664 switch ( ctx->DrawBuffer->_ColorDrawBufferIndexes[0] ) {
665 case BUFFER_FRONT_LEFT:
666 VIA_FLUSH_DMA(vmesa);
667 vmesa->drawBuffer = &vmesa->front;
668 FALLBACK(vmesa, VIA_FALLBACK_DRAW_BUFFER, GL_FALSE);
669 break;
670 case BUFFER_BACK_LEFT:
671 VIA_FLUSH_DMA(vmesa);
672 vmesa->drawBuffer = &vmesa->back;
673 FALLBACK(vmesa, VIA_FALLBACK_DRAW_BUFFER, GL_FALSE);
674 break;
675 default:
676 FALLBACK(vmesa, VIA_FALLBACK_DRAW_BUFFER, GL_TRUE);
677 return;
678 }
679
680
681 viaXMesaWindowMoved(vmesa);
682 }
683
684 static void viaClearColor(GLcontext *ctx, const GLfloat color[4])
685 {
686 struct via_context *vmesa = VIA_CONTEXT(ctx);
687 GLubyte pcolor[4];
688 CLAMPED_FLOAT_TO_UBYTE(pcolor[0], color[0]);
689 CLAMPED_FLOAT_TO_UBYTE(pcolor[1], color[1]);
690 CLAMPED_FLOAT_TO_UBYTE(pcolor[2], color[2]);
691 CLAMPED_FLOAT_TO_UBYTE(pcolor[3], color[3]);
692 vmesa->ClearColor = viaPackColor(vmesa->viaScreen->bitsPerPixel,
693 pcolor[0], pcolor[1],
694 pcolor[2], pcolor[3]);
695 }
696
697 #define WRITEMASK_ALPHA_SHIFT 31
698 #define WRITEMASK_RED_SHIFT 30
699 #define WRITEMASK_GREEN_SHIFT 29
700 #define WRITEMASK_BLUE_SHIFT 28
701
702 static void viaColorMask(GLcontext *ctx,
703 GLboolean r, GLboolean g,
704 GLboolean b, GLboolean a)
705 {
706 struct via_context *vmesa = VIA_CONTEXT( ctx );
707
708 if (VIA_DEBUG & DEBUG_STATE)
709 fprintf(stderr, "%s r(%d) g(%d) b(%d) a(%d)\n", __FUNCTION__, r, g, b, a);
710
711 vmesa->ClearMask = (((!r) << WRITEMASK_RED_SHIFT) |
712 ((!g) << WRITEMASK_GREEN_SHIFT) |
713 ((!b) << WRITEMASK_BLUE_SHIFT) |
714 ((!a) << WRITEMASK_ALPHA_SHIFT));
715 }
716
717
718
719 /* This hardware just isn't capable of private back buffers without
720 * glitches and/or a hefty locking scheme.
721 */
722 void viaCalcViewport(GLcontext *ctx)
723 {
724 struct via_context *vmesa = VIA_CONTEXT(ctx);
725 __DRIdrawablePrivate *dPriv = vmesa->driDrawable;
726 struct via_renderbuffer *const vrb =
727 (struct via_renderbuffer *) dPriv->driverPrivate;
728 const GLfloat *v = ctx->Viewport._WindowMap.m;
729 GLfloat *m = vmesa->ViewportMatrix.m;
730
731 m[MAT_SX] = v[MAT_SX];
732 m[MAT_TX] = v[MAT_TX] + vrb->drawX + SUBPIXEL_X;
733 m[MAT_SY] = - v[MAT_SY];
734 m[MAT_TY] = - v[MAT_TY] + vrb->drawY + SUBPIXEL_Y + vrb->drawH;
735 m[MAT_SZ] = v[MAT_SZ] * (1.0 / vmesa->depth_max);
736 m[MAT_TZ] = v[MAT_TZ] * (1.0 / vmesa->depth_max);
737 }
738
739 static void viaViewport(GLcontext *ctx,
740 GLint x, GLint y,
741 GLsizei width, GLsizei height)
742 {
743 viaCalcViewport(ctx);
744 }
745
746 static void viaDepthRange(GLcontext *ctx,
747 GLclampd nearval, GLclampd farval)
748 {
749 viaCalcViewport(ctx);
750 }
751
752 void viaInitState(GLcontext *ctx)
753 {
754 struct via_context *vmesa = VIA_CONTEXT(ctx);
755
756 vmesa->regCmdB = HC_ACMD_HCmdB;
757 vmesa->regEnable = HC_HenCW_MASK;
758
759 /* Mesa should do this for us:
760 */
761
762 ctx->Driver.BlendEquationSeparate( ctx,
763 ctx->Color.BlendEquationRGB,
764 ctx->Color.BlendEquationA);
765
766 ctx->Driver.BlendFuncSeparate( ctx,
767 ctx->Color.BlendSrcRGB,
768 ctx->Color.BlendDstRGB,
769 ctx->Color.BlendSrcA,
770 ctx->Color.BlendDstA);
771
772 ctx->Driver.Scissor( ctx, ctx->Scissor.X, ctx->Scissor.Y,
773 ctx->Scissor.Width, ctx->Scissor.Height );
774
775 ctx->Driver.DrawBuffer( ctx, ctx->Color.DrawBuffer[0] );
776 }
777
778 /**
779 * Convert S and T texture coordinate wrap modes to hardware bits.
780 */
781 static uint32_t
782 get_wrap_mode( GLenum sWrap, GLenum tWrap )
783 {
784 uint32_t v = 0;
785
786
787 switch( sWrap ) {
788 case GL_REPEAT:
789 v |= HC_HTXnMPMD_Srepeat;
790 break;
791 case GL_CLAMP:
792 case GL_CLAMP_TO_EDGE:
793 v |= HC_HTXnMPMD_Sclamp;
794 break;
795 case GL_MIRRORED_REPEAT:
796 v |= HC_HTXnMPMD_Smirror;
797 break;
798 }
799
800 switch( tWrap ) {
801 case GL_REPEAT:
802 v |= HC_HTXnMPMD_Trepeat;
803 break;
804 case GL_CLAMP:
805 case GL_CLAMP_TO_EDGE:
806 v |= HC_HTXnMPMD_Tclamp;
807 break;
808 case GL_MIRRORED_REPEAT:
809 v |= HC_HTXnMPMD_Tmirror;
810 break;
811 }
812
813 return v;
814 }
815
816 static uint32_t
817 get_minmag_filter( GLenum min, GLenum mag )
818 {
819 uint32_t v = 0;
820
821 switch (min) {
822 case GL_NEAREST:
823 v = HC_HTXnFLSs_Nearest |
824 HC_HTXnFLTs_Nearest;
825 break;
826 case GL_LINEAR:
827 v = HC_HTXnFLSs_Linear |
828 HC_HTXnFLTs_Linear;
829 break;
830 case GL_NEAREST_MIPMAP_NEAREST:
831 v = HC_HTXnFLSs_Nearest |
832 HC_HTXnFLTs_Nearest;
833 v |= HC_HTXnFLDs_Nearest;
834 break;
835 case GL_LINEAR_MIPMAP_NEAREST:
836 v = HC_HTXnFLSs_Linear |
837 HC_HTXnFLTs_Linear;
838 v |= HC_HTXnFLDs_Nearest;
839 break;
840 case GL_NEAREST_MIPMAP_LINEAR:
841 v = HC_HTXnFLSs_Nearest |
842 HC_HTXnFLTs_Nearest;
843 v |= HC_HTXnFLDs_Linear;
844 break;
845 case GL_LINEAR_MIPMAP_LINEAR:
846 v = HC_HTXnFLSs_Linear |
847 HC_HTXnFLTs_Linear;
848 v |= HC_HTXnFLDs_Linear;
849 break;
850 default:
851 break;
852 }
853
854 switch (mag) {
855 case GL_LINEAR:
856 v |= HC_HTXnFLSe_Linear |
857 HC_HTXnFLTe_Linear;
858 break;
859 case GL_NEAREST:
860 v |= HC_HTXnFLSe_Nearest |
861 HC_HTXnFLTe_Nearest;
862 break;
863 default:
864 break;
865 }
866
867 return v;
868 }
869
870
871 static GLboolean viaChooseTextureState(GLcontext *ctx)
872 {
873 struct via_context *vmesa = VIA_CONTEXT(ctx);
874 struct gl_texture_unit *texUnit0 = &ctx->Texture.Unit[0];
875 struct gl_texture_unit *texUnit1 = &ctx->Texture.Unit[1];
876
877 if (texUnit0->_ReallyEnabled || texUnit1->_ReallyEnabled) {
878 vmesa->regEnable |= HC_HenTXMP_MASK | HC_HenTXCH_MASK | HC_HenTXPP_MASK;
879
880 if (texUnit0->_ReallyEnabled) {
881 struct gl_texture_object *texObj = texUnit0->_Current;
882
883 vmesa->regHTXnTB[0] = get_minmag_filter( texObj->MinFilter,
884 texObj->MagFilter );
885
886 vmesa->regHTXnMPMD[0] &= ~(HC_HTXnMPMD_SMASK | HC_HTXnMPMD_TMASK);
887 vmesa->regHTXnMPMD[0] |= get_wrap_mode( texObj->WrapS,
888 texObj->WrapT );
889
890 vmesa->regHTXnTB[0] &= ~(HC_HTXnTB_TBC_S | HC_HTXnTB_TBC_T);
891 if (texObj->Image[0][texObj->BaseLevel]->Border > 0) {
892 vmesa->regHTXnTB[0] |= (HC_HTXnTB_TBC_S | HC_HTXnTB_TBC_T);
893 vmesa->regHTXnTBC[0] =
894 PACK_COLOR_888(FLOAT_TO_UBYTE(texObj->BorderColor[0]),
895 FLOAT_TO_UBYTE(texObj->BorderColor[1]),
896 FLOAT_TO_UBYTE(texObj->BorderColor[2]));
897 vmesa->regHTXnTRAH[0] = FLOAT_TO_UBYTE(texObj->BorderColor[3]);
898 }
899
900 if (texUnit0->LodBias != 0.0f) {
901 GLuint b = viaComputeLodBias(texUnit0->LodBias);
902 vmesa->regHTXnTB[0] &= ~HC_HTXnFLDs_MASK;
903 vmesa->regHTXnTB[0] |= HC_HTXnFLDs_ConstLOD;
904 vmesa->regHTXnCLOD[0] = (b&0x1f) | (((~b)&0x1f)<<10); /* FIXME */
905 }
906
907 if (!viaTexCombineState( vmesa, texUnit0->_CurrentCombine, 0 )) {
908 if (VIA_DEBUG & DEBUG_TEXTURE)
909 fprintf(stderr, "viaTexCombineState failed for unit 0\n");
910 return GL_FALSE;
911 }
912 }
913
914 if (texUnit1->_ReallyEnabled) {
915 struct gl_texture_object *texObj = texUnit1->_Current;
916
917 vmesa->regHTXnTB[1] = get_minmag_filter( texObj->MinFilter,
918 texObj->MagFilter );
919 vmesa->regHTXnMPMD[1] &= ~(HC_HTXnMPMD_SMASK | HC_HTXnMPMD_TMASK);
920 vmesa->regHTXnMPMD[1] |= get_wrap_mode( texObj->WrapS,
921 texObj->WrapT );
922
923 vmesa->regHTXnTB[1] &= ~(HC_HTXnTB_TBC_S | HC_HTXnTB_TBC_T);
924 if (texObj->Image[0][texObj->BaseLevel]->Border > 0) {
925 vmesa->regHTXnTB[1] |= (HC_HTXnTB_TBC_S | HC_HTXnTB_TBC_T);
926 vmesa->regHTXnTBC[1] =
927 PACK_COLOR_888(FLOAT_TO_UBYTE(texObj->BorderColor[0]),
928 FLOAT_TO_UBYTE(texObj->BorderColor[1]),
929 FLOAT_TO_UBYTE(texObj->BorderColor[2]));
930 vmesa->regHTXnTRAH[1] = FLOAT_TO_UBYTE(texObj->BorderColor[3]);
931 }
932
933
934 if (texUnit1->LodBias != 0.0f) {
935 GLuint b = viaComputeLodBias(texUnit1->LodBias);
936 vmesa->regHTXnTB[1] &= ~HC_HTXnFLDs_MASK;
937 vmesa->regHTXnTB[1] |= HC_HTXnFLDs_ConstLOD;
938 vmesa->regHTXnCLOD[1] = (b&0x1f) | (((~b)&0x1f)<<10); /* FIXME */
939 }
940
941 if (!viaTexCombineState( vmesa, texUnit1->_CurrentCombine, 1 )) {
942 if (VIA_DEBUG & DEBUG_TEXTURE)
943 fprintf(stderr, "viaTexCombineState failed for unit 1\n");
944 return GL_FALSE;
945 }
946 }
947 }
948 else {
949 vmesa->regEnable &= ~(HC_HenTXMP_MASK | HC_HenTXCH_MASK |
950 HC_HenTXPP_MASK);
951 }
952
953 return GL_TRUE;
954 }
955
956 static void viaChooseColorState(GLcontext *ctx)
957 {
958 struct via_context *vmesa = VIA_CONTEXT(ctx);
959 GLenum s = ctx->Color.BlendSrcRGB;
960 GLenum d = ctx->Color.BlendDstRGB;
961
962 /* The HW's blending equation is:
963 * (Ca * FCa + Cbias + Cb * FCb) << Cshift
964 */
965
966 if (ctx->Color.BlendEnabled) {
967 vmesa->regEnable |= HC_HenABL_MASK;
968 /* Ca -- always from source color.
969 */
970 vmesa->regHABLCsat = HC_HABLCsat_MASK | HC_HABLCa_OPC | HC_HABLCa_Csrc;
971 /* Aa -- always from source alpha.
972 */
973 vmesa->regHABLAsat = HC_HABLAsat_MASK | HC_HABLAa_OPA | HC_HABLAa_Asrc;
974 /* FCa -- depend on following condition.
975 * FAa -- depend on following condition.
976 */
977 switch (s) {
978 case GL_ZERO:
979 /* (0, 0, 0, 0)
980 */
981 vmesa->regHABLCsat |= HC_HABLFCa_OPC | HC_HABLFCa_HABLRCa;
982 vmesa->regHABLAsat |= HC_HABLFAa_OPA | HC_HABLFAa_HABLFRA;
983 vmesa->regHABLRFCa = 0x0;
984 vmesa->regHABLRAa = 0x0;
985 break;
986 case GL_ONE:
987 /* (1, 1, 1, 1)
988 */
989 vmesa->regHABLCsat |= HC_HABLFCa_InvOPC | HC_HABLFCa_HABLRCa;
990 vmesa->regHABLAsat |= HC_HABLFAa_InvOPA | HC_HABLFAa_HABLFRA;
991 vmesa->regHABLRFCa = 0x0;
992 vmesa->regHABLRAa = 0x0;
993 break;
994 case GL_SRC_COLOR:
995 /* (Rs, Gs, Bs, As)
996 */
997 vmesa->regHABLCsat |= HC_HABLFCa_OPC | HC_HABLFCa_Csrc;
998 vmesa->regHABLAsat |= HC_HABLFAa_OPA | HC_HABLFAa_Asrc;
999 break;
1000 case GL_ONE_MINUS_SRC_COLOR:
1001 /* (1, 1, 1, 1) - (Rs, Gs, Bs, As)
1002 */
1003 vmesa->regHABLCsat |= HC_HABLFCa_InvOPC | HC_HABLFCa_Csrc;
1004 vmesa->regHABLAsat |= HC_HABLFAa_InvOPA | HC_HABLFAa_Asrc;
1005 break;
1006 case GL_DST_COLOR:
1007 /* (Rd, Gd, Bd, Ad)
1008 */
1009 vmesa->regHABLCsat |= HC_HABLFCa_OPC | HC_HABLFCa_Cdst;
1010 vmesa->regHABLAsat |= HC_HABLFAa_OPA | HC_HABLFAa_Adst;
1011 break;
1012 case GL_ONE_MINUS_DST_COLOR:
1013 /* (1, 1, 1, 1) - (Rd, Gd, Bd, Ad)
1014 */
1015 vmesa->regHABLCsat |= HC_HABLFCa_InvOPC | HC_HABLFCa_Cdst;
1016 vmesa->regHABLAsat |= HC_HABLFAa_InvOPA | HC_HABLFAa_Adst;
1017 break;
1018 case GL_SRC_ALPHA:
1019 /* (As, As, As, As)
1020 */
1021 vmesa->regHABLCsat |= HC_HABLFCa_OPC | HC_HABLFCa_Asrc;
1022 vmesa->regHABLAsat |= HC_HABLFAa_OPA | HC_HABLFAa_Asrc;
1023 break;
1024 case GL_ONE_MINUS_SRC_ALPHA:
1025 /* (1, 1, 1, 1) - (As, As, As, As)
1026 */
1027 vmesa->regHABLCsat |= HC_HABLFCa_InvOPC | HC_HABLFCa_Asrc;
1028 vmesa->regHABLAsat |= HC_HABLFAa_InvOPA | HC_HABLFAa_Asrc;
1029 break;
1030 case GL_DST_ALPHA:
1031 {
1032 if (vmesa->viaScreen->bitsPerPixel == 16) {
1033 /* (1, 1, 1, 1)
1034 */
1035 vmesa->regHABLCsat |= (HC_HABLFCa_InvOPC |
1036 HC_HABLFCa_HABLRCa);
1037 vmesa->regHABLAsat |= (HC_HABLFAa_InvOPA |
1038 HC_HABLFAa_HABLFRA);
1039 vmesa->regHABLRFCa = 0x0;
1040 vmesa->regHABLRAa = 0x0;
1041 }
1042 else {
1043 /* (Ad, Ad, Ad, Ad)
1044 */
1045 vmesa->regHABLCsat |= HC_HABLFCa_OPC | HC_HABLFCa_Adst;
1046 vmesa->regHABLAsat |= HC_HABLFAa_OPA | HC_HABLFAa_Adst;
1047 }
1048 }
1049 break;
1050 case GL_ONE_MINUS_DST_ALPHA:
1051 {
1052 if (vmesa->viaScreen->bitsPerPixel == 16) {
1053 /* (1, 1, 1, 1) - (1, 1, 1, 1) = (0, 0, 0, 0)
1054 */
1055 vmesa->regHABLCsat |= HC_HABLFCa_OPC | HC_HABLFCa_HABLRCa;
1056 vmesa->regHABLAsat |= HC_HABLFAa_OPA | HC_HABLFAa_HABLFRA;
1057 vmesa->regHABLRFCa = 0x0;
1058 vmesa->regHABLRAa = 0x0;
1059 }
1060 else {
1061 /* (1, 1, 1, 1) - (Ad, Ad, Ad, Ad)
1062 */
1063 vmesa->regHABLCsat |= HC_HABLFCa_InvOPC | HC_HABLFCa_Adst;
1064 vmesa->regHABLAsat |= HC_HABLFAa_InvOPA | HC_HABLFAa_Adst;
1065 }
1066 }
1067 break;
1068 case GL_SRC_ALPHA_SATURATE:
1069 {
1070 if (vmesa->viaScreen->bitsPerPixel == 16) {
1071 /* (f, f, f, 1), f = min(As, 1 - Ad) = min(As, 1 - 1) = 0
1072 * So (f, f, f, 1) = (0, 0, 0, 1)
1073 */
1074 vmesa->regHABLCsat |= HC_HABLFCa_OPC | HC_HABLFCa_HABLRCa;
1075 vmesa->regHABLAsat |= (HC_HABLFAa_InvOPA |
1076 HC_HABLFAa_HABLFRA);
1077 vmesa->regHABLRFCa = 0x0;
1078 vmesa->regHABLRAa = 0x0;
1079 }
1080 else {
1081 /* (f, f, f, 1), f = min(As, 1 - Ad)
1082 */
1083 vmesa->regHABLCsat |= (HC_HABLFCa_OPC |
1084 HC_HABLFCa_mimAsrcInvAdst);
1085 vmesa->regHABLAsat |= (HC_HABLFAa_InvOPA |
1086 HC_HABLFAa_HABLFRA);
1087 vmesa->regHABLRFCa = 0x0;
1088 vmesa->regHABLRAa = 0x0;
1089 }
1090 }
1091 break;
1092 }
1093
1094 /* Op is add.
1095 */
1096
1097 /* bias is 0.
1098 */
1099 vmesa->regHABLCsat |= HC_HABLCbias_HABLRCbias;
1100 vmesa->regHABLAsat |= HC_HABLAbias_HABLRAbias;
1101
1102 /* Cb -- always from destination color.
1103 */
1104 vmesa->regHABLCop = HC_HABLCb_OPC | HC_HABLCb_Cdst;
1105 /* Ab -- always from destination alpha.
1106 */
1107 vmesa->regHABLAop = HC_HABLAb_OPA | HC_HABLAb_Adst;
1108 /* FCb -- depend on following condition.
1109 */
1110 switch (d) {
1111 case GL_ZERO:
1112 /* (0, 0, 0, 0)
1113 */
1114 vmesa->regHABLCop |= HC_HABLFCb_OPC | HC_HABLFCb_HABLRCb;
1115 vmesa->regHABLAop |= HC_HABLFAb_OPA | HC_HABLFAb_HABLFRA;
1116 vmesa->regHABLRFCb = 0x0;
1117 vmesa->regHABLRAb = 0x0;
1118 break;
1119 case GL_ONE:
1120 /* (1, 1, 1, 1)
1121 */
1122 vmesa->regHABLCop |= HC_HABLFCb_InvOPC | HC_HABLFCb_HABLRCb;
1123 vmesa->regHABLAop |= HC_HABLFAb_InvOPA | HC_HABLFAb_HABLFRA;
1124 vmesa->regHABLRFCb = 0x0;
1125 vmesa->regHABLRAb = 0x0;
1126 break;
1127 case GL_SRC_COLOR:
1128 /* (Rs, Gs, Bs, As)
1129 */
1130 vmesa->regHABLCop |= HC_HABLFCb_OPC | HC_HABLFCb_Csrc;
1131 vmesa->regHABLAop |= HC_HABLFAb_OPA | HC_HABLFAb_Asrc;
1132 break;
1133 case GL_ONE_MINUS_SRC_COLOR:
1134 /* (1, 1, 1, 1) - (Rs, Gs, Bs, As)
1135 */
1136 vmesa->regHABLCop |= HC_HABLFCb_InvOPC | HC_HABLFCb_Csrc;
1137 vmesa->regHABLAop |= HC_HABLFAb_InvOPA | HC_HABLFAb_Asrc;
1138 break;
1139 case GL_DST_COLOR:
1140 /* (Rd, Gd, Bd, Ad)
1141 */
1142 vmesa->regHABLCop |= HC_HABLFCb_OPC | HC_HABLFCb_Cdst;
1143 vmesa->regHABLAop |= HC_HABLFAb_OPA | HC_HABLFAb_Adst;
1144 break;
1145 case GL_ONE_MINUS_DST_COLOR:
1146 /* (1, 1, 1, 1) - (Rd, Gd, Bd, Ad)
1147 */
1148 vmesa->regHABLCop |= HC_HABLFCb_InvOPC | HC_HABLFCb_Cdst;
1149 vmesa->regHABLAop |= HC_HABLFAb_InvOPA | HC_HABLFAb_Adst;
1150 break;
1151 case GL_SRC_ALPHA:
1152 /* (As, As, As, As)
1153 */
1154 vmesa->regHABLCop |= HC_HABLFCb_OPC | HC_HABLFCb_Asrc;
1155 vmesa->regHABLAop |= HC_HABLFAb_OPA | HC_HABLFAb_Asrc;
1156 break;
1157 case GL_ONE_MINUS_SRC_ALPHA:
1158 /* (1, 1, 1, 1) - (As, As, As, As)
1159 */
1160 vmesa->regHABLCop |= HC_HABLFCb_InvOPC | HC_HABLFCb_Asrc;
1161 vmesa->regHABLAop |= HC_HABLFAb_InvOPA | HC_HABLFAb_Asrc;
1162 break;
1163 case GL_DST_ALPHA:
1164 {
1165 if (vmesa->viaScreen->bitsPerPixel == 16) {
1166 /* (1, 1, 1, 1)
1167 */
1168 vmesa->regHABLCop |= HC_HABLFCb_InvOPC | HC_HABLFCb_HABLRCb;
1169 vmesa->regHABLAop |= HC_HABLFAb_InvOPA | HC_HABLFAb_HABLFRA;
1170 vmesa->regHABLRFCb = 0x0;
1171 vmesa->regHABLRAb = 0x0;
1172 }
1173 else {
1174 /* (Ad, Ad, Ad, Ad)
1175 */
1176 vmesa->regHABLCop |= HC_HABLFCb_OPC | HC_HABLFCb_Adst;
1177 vmesa->regHABLAop |= HC_HABLFAb_OPA | HC_HABLFAb_Adst;
1178 }
1179 }
1180 break;
1181 case GL_ONE_MINUS_DST_ALPHA:
1182 {
1183 if (vmesa->viaScreen->bitsPerPixel == 16) {
1184 /* (1, 1, 1, 1) - (1, 1, 1, 1) = (0, 0, 0, 0)
1185 */
1186 vmesa->regHABLCop |= HC_HABLFCb_OPC | HC_HABLFCb_HABLRCb;
1187 vmesa->regHABLAop |= HC_HABLFAb_OPA | HC_HABLFAb_HABLFRA;
1188 vmesa->regHABLRFCb = 0x0;
1189 vmesa->regHABLRAb = 0x0;
1190 }
1191 else {
1192 /* (1, 1, 1, 1) - (Ad, Ad, Ad, Ad)
1193 */
1194 vmesa->regHABLCop |= HC_HABLFCb_InvOPC | HC_HABLFCb_Adst;
1195 vmesa->regHABLAop |= HC_HABLFAb_InvOPA | HC_HABLFAb_Adst;
1196 }
1197 }
1198 break;
1199 default:
1200 vmesa->regHABLCop |= HC_HABLFCb_OPC | HC_HABLFCb_HABLRCb;
1201 vmesa->regHABLAop |= HC_HABLFAb_OPA | HC_HABLFAb_HABLFRA;
1202 vmesa->regHABLRFCb = 0x0;
1203 vmesa->regHABLRAb = 0x0;
1204 break;
1205 }
1206
1207 if (vmesa->viaScreen->bitsPerPixel <= 16)
1208 vmesa->regEnable &= ~HC_HenDT_MASK;
1209
1210 }
1211 else {
1212 vmesa->regEnable &= (~HC_HenABL_MASK);
1213 }
1214
1215 if (ctx->Color.AlphaEnabled) {
1216 vmesa->regEnable |= HC_HenAT_MASK;
1217 vmesa->regHATMD = FLOAT_TO_UBYTE(ctx->Color.AlphaRef) |
1218 ((ctx->Color.AlphaFunc - GL_NEVER) << 8);
1219 }
1220 else {
1221 vmesa->regEnable &= (~HC_HenAT_MASK);
1222 }
1223
1224 if (ctx->Color.DitherFlag && (vmesa->viaScreen->bitsPerPixel < 32)) {
1225 if (ctx->Color.BlendEnabled) {
1226 vmesa->regEnable &= ~HC_HenDT_MASK;
1227 }
1228 else {
1229 vmesa->regEnable |= HC_HenDT_MASK;
1230 }
1231 }
1232
1233
1234 vmesa->regEnable &= ~HC_HenDT_MASK;
1235
1236 if (ctx->Color.ColorLogicOpEnabled)
1237 vmesa->regHROP = ROP[ctx->Color.LogicOp & 0xF];
1238 else
1239 vmesa->regHROP = HC_HROP_P;
1240
1241 vmesa->regHFBBMSKL = PACK_COLOR_888(ctx->Color.ColorMask[0],
1242 ctx->Color.ColorMask[1],
1243 ctx->Color.ColorMask[2]);
1244 vmesa->regHROP |= ctx->Color.ColorMask[3];
1245
1246 if (ctx->Color.ColorMask[3])
1247 vmesa->regEnable |= HC_HenAW_MASK;
1248 else
1249 vmesa->regEnable &= ~HC_HenAW_MASK;
1250 }
1251
1252 static void viaChooseFogState(GLcontext *ctx)
1253 {
1254 struct via_context *vmesa = VIA_CONTEXT(ctx);
1255
1256 if (ctx->Fog.Enabled) {
1257 GLubyte r, g, b, a;
1258
1259 vmesa->regEnable |= HC_HenFOG_MASK;
1260
1261 /* Use fog equation 0 (OpenGL's default) & local fog.
1262 */
1263 vmesa->regHFogLF = 0x0;
1264
1265 r = (GLubyte)(ctx->Fog.Color[0] * 255.0F);
1266 g = (GLubyte)(ctx->Fog.Color[1] * 255.0F);
1267 b = (GLubyte)(ctx->Fog.Color[2] * 255.0F);
1268 a = (GLubyte)(ctx->Fog.Color[3] * 255.0F);
1269 vmesa->regHFogCL = (r << 16) | (g << 8) | b;
1270 vmesa->regHFogCH = a;
1271 }
1272 else {
1273 vmesa->regEnable &= ~HC_HenFOG_MASK;
1274 }
1275 }
1276
1277 static void viaChooseDepthState(GLcontext *ctx)
1278 {
1279 struct via_context *vmesa = VIA_CONTEXT(ctx);
1280 if (ctx->Depth.Test) {
1281 vmesa->regEnable |= HC_HenZT_MASK;
1282 if (ctx->Depth.Mask)
1283 vmesa->regEnable |= HC_HenZW_MASK;
1284 else
1285 vmesa->regEnable &= (~HC_HenZW_MASK);
1286 vmesa->regHZWTMD = (ctx->Depth.Func - GL_NEVER) << 16;
1287
1288 }
1289 else {
1290 vmesa->regEnable &= ~HC_HenZT_MASK;
1291
1292 /*=* [DBG] racer : can't display cars in car selection menu *=*/
1293 /*if (ctx->Depth.Mask)
1294 vmesa->regEnable |= HC_HenZW_MASK;
1295 else
1296 vmesa->regEnable &= (~HC_HenZW_MASK);*/
1297 vmesa->regEnable &= (~HC_HenZW_MASK);
1298 }
1299 }
1300
1301 static void viaChooseLineState(GLcontext *ctx)
1302 {
1303 struct via_context *vmesa = VIA_CONTEXT(ctx);
1304
1305 if (ctx->Line.StippleFlag) {
1306 vmesa->regEnable |= HC_HenLP_MASK;
1307 vmesa->regHLP = ctx->Line.StipplePattern;
1308 vmesa->regHLPRF = ctx->Line.StippleFactor;
1309 }
1310 else {
1311 vmesa->regEnable &= ~HC_HenLP_MASK;
1312 }
1313 }
1314
1315 static void viaChoosePolygonState(GLcontext *ctx)
1316 {
1317 struct via_context *vmesa = VIA_CONTEXT(ctx);
1318
1319 #if 0
1320 /* Polygon stipple is broken - see via_state.c
1321 */
1322 if (ctx->Polygon.StippleFlag) {
1323 vmesa->regEnable |= HC_HenSP_MASK;
1324 }
1325 else {
1326 vmesa->regEnable &= ~HC_HenSP_MASK;
1327 }
1328 #else
1329 FALLBACK(vmesa, VIA_FALLBACK_POLY_STIPPLE,
1330 ctx->Polygon.StippleFlag);
1331 #endif
1332
1333 if (ctx->Polygon.CullFlag) {
1334 vmesa->regEnable |= HC_HenFBCull_MASK;
1335 }
1336 else {
1337 vmesa->regEnable &= ~HC_HenFBCull_MASK;
1338 }
1339 }
1340
1341 static void viaChooseStencilState(GLcontext *ctx)
1342 {
1343 struct via_context *vmesa = VIA_CONTEXT(ctx);
1344
1345 if (ctx->Stencil.Enabled) {
1346 GLuint temp;
1347
1348 vmesa->regEnable |= HC_HenST_MASK;
1349 temp = (ctx->Stencil.Ref[0] & 0xFF) << HC_HSTREF_SHIFT;
1350 temp |= 0xFF << HC_HSTOPMSK_SHIFT;
1351 temp |= (ctx->Stencil.ValueMask[0] & 0xFF);
1352 vmesa->regHSTREF = temp;
1353
1354 temp = (ctx->Stencil.Function[0] - GL_NEVER) << 16;
1355
1356 switch (ctx->Stencil.FailFunc[0]) {
1357 case GL_KEEP:
1358 temp |= HC_HSTOPSF_KEEP;
1359 break;
1360 case GL_ZERO:
1361 temp |= HC_HSTOPSF_ZERO;
1362 break;
1363 case GL_REPLACE:
1364 temp |= HC_HSTOPSF_REPLACE;
1365 break;
1366 case GL_INVERT:
1367 temp |= HC_HSTOPSF_INVERT;
1368 break;
1369 case GL_INCR:
1370 temp |= HC_HSTOPSF_INCR;
1371 break;
1372 case GL_DECR:
1373 temp |= HC_HSTOPSF_DECR;
1374 break;
1375 }
1376
1377 switch (ctx->Stencil.ZFailFunc[0]) {
1378 case GL_KEEP:
1379 temp |= HC_HSTOPSPZF_KEEP;
1380 break;
1381 case GL_ZERO:
1382 temp |= HC_HSTOPSPZF_ZERO;
1383 break;
1384 case GL_REPLACE:
1385 temp |= HC_HSTOPSPZF_REPLACE;
1386 break;
1387 case GL_INVERT:
1388 temp |= HC_HSTOPSPZF_INVERT;
1389 break;
1390 case GL_INCR:
1391 temp |= HC_HSTOPSPZF_INCR;
1392 break;
1393 case GL_DECR:
1394 temp |= HC_HSTOPSPZF_DECR;
1395 break;
1396 }
1397
1398 switch (ctx->Stencil.ZPassFunc[0]) {
1399 case GL_KEEP:
1400 temp |= HC_HSTOPSPZP_KEEP;
1401 break;
1402 case GL_ZERO:
1403 temp |= HC_HSTOPSPZP_ZERO;
1404 break;
1405 case GL_REPLACE:
1406 temp |= HC_HSTOPSPZP_REPLACE;
1407 break;
1408 case GL_INVERT:
1409 temp |= HC_HSTOPSPZP_INVERT;
1410 break;
1411 case GL_INCR:
1412 temp |= HC_HSTOPSPZP_INCR;
1413 break;
1414 case GL_DECR:
1415 temp |= HC_HSTOPSPZP_DECR;
1416 break;
1417 }
1418 vmesa->regHSTMD = temp;
1419 }
1420 else {
1421 vmesa->regEnable &= ~HC_HenST_MASK;
1422 }
1423 }
1424
1425
1426
1427 static void viaChooseTriangle(GLcontext *ctx)
1428 {
1429 struct via_context *vmesa = VIA_CONTEXT(ctx);
1430
1431 if (ctx->Polygon.CullFlag == GL_TRUE) {
1432 switch (ctx->Polygon.CullFaceMode) {
1433 case GL_FRONT:
1434 if (ctx->Polygon.FrontFace == GL_CCW)
1435 vmesa->regCmdB |= HC_HBFace_MASK;
1436 else
1437 vmesa->regCmdB &= ~HC_HBFace_MASK;
1438 break;
1439 case GL_BACK:
1440 if (ctx->Polygon.FrontFace == GL_CW)
1441 vmesa->regCmdB |= HC_HBFace_MASK;
1442 else
1443 vmesa->regCmdB &= ~HC_HBFace_MASK;
1444 break;
1445 case GL_FRONT_AND_BACK:
1446 return;
1447 }
1448 }
1449 }
1450
1451 void viaValidateState( GLcontext *ctx )
1452 {
1453 struct via_context *vmesa = VIA_CONTEXT(ctx);
1454
1455 if (vmesa->newState & _NEW_TEXTURE) {
1456 GLboolean ok = (viaChooseTextureState(ctx) &&
1457 viaUpdateTextureState(ctx));
1458
1459 FALLBACK(vmesa, VIA_FALLBACK_TEXTURE, !ok);
1460 }
1461
1462 if (vmesa->newState & _NEW_COLOR)
1463 viaChooseColorState(ctx);
1464
1465 if (vmesa->newState & _NEW_DEPTH)
1466 viaChooseDepthState(ctx);
1467
1468 if (vmesa->newState & _NEW_FOG)
1469 viaChooseFogState(ctx);
1470
1471 if (vmesa->newState & _NEW_LINE)
1472 viaChooseLineState(ctx);
1473
1474 if (vmesa->newState & (_NEW_POLYGON | _NEW_POLYGONSTIPPLE)) {
1475 viaChoosePolygonState(ctx);
1476 viaChooseTriangle(ctx);
1477 }
1478
1479 if ((vmesa->newState & _NEW_STENCIL) && vmesa->have_hw_stencil)
1480 viaChooseStencilState(ctx);
1481
1482 if (ctx->_TriangleCaps & DD_SEPARATE_SPECULAR)
1483 vmesa->regEnable |= HC_HenCS_MASK;
1484 else
1485 vmesa->regEnable &= ~HC_HenCS_MASK;
1486
1487 if (ctx->Point.SmoothFlag ||
1488 ctx->Line.SmoothFlag ||
1489 ctx->Polygon.SmoothFlag)
1490 vmesa->regEnable |= HC_HenAA_MASK;
1491 else
1492 vmesa->regEnable &= ~HC_HenAA_MASK;
1493
1494 vmesa->newEmitState |= vmesa->newState;
1495 vmesa->newState = 0;
1496 }
1497
1498 static void viaInvalidateState(GLcontext *ctx, GLuint newState)
1499 {
1500 struct via_context *vmesa = VIA_CONTEXT(ctx);
1501
1502 VIA_FINISH_PRIM( vmesa );
1503 vmesa->newState |= newState;
1504
1505 _swrast_InvalidateState(ctx, newState);
1506 _swsetup_InvalidateState(ctx, newState);
1507 _vbo_InvalidateState(ctx, newState);
1508 _tnl_InvalidateState(ctx, newState);
1509 }
1510
1511 void viaInitStateFuncs(GLcontext *ctx)
1512 {
1513 /* Callbacks for internal Mesa events.
1514 */
1515 ctx->Driver.UpdateState = viaInvalidateState;
1516
1517 /* API callbacks
1518 */
1519 ctx->Driver.BlendEquationSeparate = viaBlendEquationSeparate;
1520 ctx->Driver.BlendFuncSeparate = viaBlendFuncSeparate;
1521 ctx->Driver.ClearColor = viaClearColor;
1522 ctx->Driver.ColorMask = viaColorMask;
1523 ctx->Driver.DrawBuffer = viaDrawBuffer;
1524 ctx->Driver.RenderMode = viaRenderMode;
1525 ctx->Driver.Scissor = viaScissor;
1526 ctx->Driver.DepthRange = viaDepthRange;
1527 ctx->Driver.Viewport = viaViewport;
1528 ctx->Driver.Enable = viaEnable;
1529
1530 /* XXX this should go away */
1531 ctx->Driver.ResizeBuffers = viaReAllocateBuffers;
1532 }