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diff --git a/src/others/irrlicht-1.8.1/source/Irrlicht/CTRTextureLightMapGouraud2_M4.cpp b/src/others/irrlicht-1.8.1/source/Irrlicht/CTRTextureLightMapGouraud2_M4.cpp
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1// Copyright (C) 2002-2012 Nikolaus Gebhardt / Thomas Alten
2// This file is part of the "Irrlicht Engine".
3// For conditions of distribution and use, see copyright notice in irrlicht.h
4
5#include "IrrCompileConfig.h"
6#include "IBurningShader.h"
7
8#ifdef _IRR_COMPILE_WITH_BURNINGSVIDEO_
9
10// compile flag for this file
11#undef USE_ZBUFFER
12#undef IPOL_Z
13#undef CMP_Z
14#undef WRITE_Z
15
16#undef IPOL_W
17#undef CMP_W
18#undef WRITE_W
19
20#undef SUBTEXEL
21#undef INVERSE_W
22
23#undef IPOL_C0
24#undef IPOL_T0
25#undef IPOL_T1
26
27// define render case
28#define SUBTEXEL
29#define INVERSE_W
30
31#define USE_ZBUFFER
32#define IPOL_W
33#define CMP_W
34#define WRITE_W
35
36#define IPOL_C0
37#define IPOL_T0
38#define IPOL_T1
39
40// apply global override
41#ifndef SOFTWARE_DRIVER_2_PERSPECTIVE_CORRECT
42 #undef INVERSE_W
43#endif
44
45#ifndef SOFTWARE_DRIVER_2_SUBTEXEL
46 #undef SUBTEXEL
47#endif
48
49#ifndef SOFTWARE_DRIVER_2_USE_VERTEX_COLOR
50 #undef IPOL_C0
51#endif
52
53#if !defined ( SOFTWARE_DRIVER_2_USE_WBUFFER ) && defined ( USE_ZBUFFER )
54 #ifndef SOFTWARE_DRIVER_2_PERSPECTIVE_CORRECT
55 #undef IPOL_W
56 #endif
57 #define IPOL_Z
58
59 #ifdef CMP_W
60 #undef CMP_W
61 #define CMP_Z
62 #endif
63
64 #ifdef WRITE_W
65 #undef WRITE_W
66 #define WRITE_Z
67 #endif
68
69#endif
70
71namespace irr
72{
73
74namespace video
75{
76
77class CTRGTextureLightMap2_M4 : public IBurningShader
78{
79public:
80
81 //! constructor
82 CTRGTextureLightMap2_M4(CBurningVideoDriver* driver);
83
84 //! draws an indexed triangle list
85 virtual void drawTriangle ( const s4DVertex *a,const s4DVertex *b,const s4DVertex *c );
86
87
88private:
89 void scanline_bilinear ();
90
91 sScanConvertData scan;
92 sScanLineData line;
93
94};
95
96//! constructor
97CTRGTextureLightMap2_M4::CTRGTextureLightMap2_M4(CBurningVideoDriver* driver)
98: IBurningShader(driver)
99{
100 #ifdef _DEBUG
101 setDebugName("CTRGTextureLightMap2_M4");
102 #endif
103}
104
105
106
107/*!
108*/
109void CTRGTextureLightMap2_M4::scanline_bilinear ()
110{
111 tVideoSample *dst;
112
113#ifdef USE_ZBUFFER
114 fp24 *z;
115#endif
116
117 s32 xStart;
118 s32 xEnd;
119 s32 dx;
120
121
122#ifdef SUBTEXEL
123 f32 subPixel;
124#endif
125
126#ifdef IPOL_Z
127 f32 slopeZ;
128#endif
129#ifdef IPOL_W
130 fp24 slopeW;
131#endif
132#ifdef IPOL_C0
133 sVec4 slopeC;
134#endif
135#ifdef IPOL_T0
136 sVec2 slopeT[BURNING_MATERIAL_MAX_TEXTURES];
137#endif
138
139 // apply top-left fill-convention, left
140 xStart = core::ceil32( line.x[0] );
141 xEnd = core::ceil32( line.x[1] ) - 1;
142
143 dx = xEnd - xStart;
144
145 if ( dx < 0 )
146 return;
147
148 // slopes
149 const f32 invDeltaX = core::reciprocal_approxim ( line.x[1] - line.x[0] );
150
151#ifdef IPOL_Z
152 slopeZ = (line.z[1] - line.z[0]) * invDeltaX;
153#endif
154#ifdef IPOL_W
155 slopeW = (line.w[1] - line.w[0]) * invDeltaX;
156#endif
157#ifdef IPOL_C0
158 slopeC = (line.c[0][1] - line.c[0][0]) * invDeltaX;
159#endif
160#ifdef IPOL_T0
161 slopeT[0] = (line.t[0][1] - line.t[0][0]) * invDeltaX;
162#endif
163#ifdef IPOL_T1
164 slopeT[1] = (line.t[1][1] - line.t[1][0]) * invDeltaX;
165#endif
166
167#ifdef SUBTEXEL
168 subPixel = ( (f32) xStart ) - line.x[0];
169#ifdef IPOL_Z
170 line.z[0] += slopeZ * subPixel;
171#endif
172#ifdef IPOL_W
173 line.w[0] += slopeW * subPixel;
174#endif
175#ifdef IPOL_C0
176 line.c[0][0] += slopeC * subPixel;
177#endif
178#ifdef IPOL_T0
179 line.t[0][0] += slopeT[0] * subPixel;
180#endif
181#ifdef IPOL_T1
182 line.t[1][0] += slopeT[1] * subPixel;
183#endif
184#endif
185
186 dst = (tVideoSample*)RenderTarget->lock() + ( line.y * RenderTarget->getDimension().Width ) + xStart;
187
188#ifdef USE_ZBUFFER
189 z = (fp24*) DepthBuffer->lock() + ( line.y * RenderTarget->getDimension().Width ) + xStart;
190#endif
191
192
193#ifdef INVERSE_W
194 f32 inversew;
195#endif
196
197 tFixPoint tx0, tx1;
198 tFixPoint ty0, ty1;
199
200 tFixPoint r0, g0, b0;
201 tFixPoint r1, g1, b1;
202 tFixPoint r2, g2, b2;
203
204#ifdef IPOL_C0
205 tFixPoint r3, g3, b3;
206#endif
207
208 for ( s32 i = 0; i <= dx; i++ )
209 {
210#ifdef CMP_Z
211 if ( line.z[0] < z[i] )
212#endif
213#ifdef CMP_W
214 if ( line.w[0] >= z[i] )
215#endif
216 {
217#ifdef INVERSE_W
218 inversew = fix_inverse32 ( line.w[0] );
219
220 tx0 = tofix ( line.t[0][0].x,inversew);
221 ty0 = tofix ( line.t[0][0].y,inversew);
222 tx1 = tofix ( line.t[1][0].x,inversew);
223 ty1 = tofix ( line.t[1][0].y,inversew);
224
225#ifdef IPOL_C0
226 r3 = tofix ( line.c[0][0].y ,inversew );
227 g3 = tofix ( line.c[0][0].z ,inversew );
228 b3 = tofix ( line.c[0][0].w ,inversew );
229#endif
230
231#else
232 tx0 = tofix ( line.t[0][0].x );
233 ty0 = tofix ( line.t[0][0].y );
234 tx1 = tofix ( line.t[1][0].x );
235 ty1 = tofix ( line.t[1][0].y );
236
237#ifdef IPOL_C0
238 r3 = tofix ( line.c[0][0].y );
239 g3 = tofix ( line.c[0][0].z );
240 b3 = tofix ( line.c[0][0].w );
241#endif
242
243#endif
244 getSample_texture ( r0, g0, b0, &IT[0], tx0, ty0 );
245 getSample_texture ( r1, g1, b1, &IT[1], tx1, ty1 );
246
247#ifdef IPOL_C0
248 r2 = imulFix ( r0, r3 );
249 g2 = imulFix ( g0, g3 );
250 b2 = imulFix ( b0, b3 );
251
252 r2 = clampfix_maxcolor ( imulFix_tex4 ( r2, r1 ) );
253 g2 = clampfix_maxcolor ( imulFix_tex4 ( g2, g1 ) );
254 b2 = clampfix_maxcolor ( imulFix_tex4 ( b2, b1 ) );
255/*
256 r2 = r3 << 8;
257 g2 = g3 << 8;
258 b2 = b3 << 8;
259*/
260#else
261 r2 = clampfix_maxcolor ( imulFix_tex4 ( r0, r1 ) );
262 g2 = clampfix_maxcolor ( imulFix_tex4 ( g0, g1 ) );
263 b2 = clampfix_maxcolor ( imulFix_tex4 ( b0, b1 ) );
264#endif
265
266
267 dst[i] = fix_to_color ( r2, g2, b2 );
268
269#ifdef WRITE_Z
270 z[i] = line.z[0];
271#endif
272#ifdef WRITE_W
273 z[i] = line.w[0];
274#endif
275 }
276
277#ifdef IPOL_Z
278 line.z[0] += slopeZ;
279#endif
280#ifdef IPOL_W
281 line.w[0] += slopeW;
282#endif
283#ifdef IPOL_C0
284 line.c[0][0] += slopeC;
285#endif
286#ifdef IPOL_T0
287 line.t[0][0] += slopeT[0];
288#endif
289#ifdef IPOL_T1
290 line.t[1][0] += slopeT[1];
291#endif
292 }
293
294}
295
296void CTRGTextureLightMap2_M4::drawTriangle ( const s4DVertex *a,const s4DVertex *b,const s4DVertex *c )
297{
298 // sort on height, y
299 if ( F32_A_GREATER_B ( a->Pos.y , b->Pos.y ) ) swapVertexPointer(&a, &b);
300 if ( F32_A_GREATER_B ( b->Pos.y , c->Pos.y ) ) swapVertexPointer(&b, &c);
301 if ( F32_A_GREATER_B ( a->Pos.y , b->Pos.y ) ) swapVertexPointer(&a, &b);
302
303 const f32 ca = c->Pos.y - a->Pos.y;
304 const f32 ba = b->Pos.y - a->Pos.y;
305 const f32 cb = c->Pos.y - b->Pos.y;
306 // calculate delta y of the edges
307 scan.invDeltaY[0] = core::reciprocal( ca );
308 scan.invDeltaY[1] = core::reciprocal( ba );
309 scan.invDeltaY[2] = core::reciprocal( cb );
310
311 if ( F32_LOWER_0 ( scan.invDeltaY[0] ) )
312 return;
313
314 // find if the major edge is left or right aligned
315 f32 temp[4];
316
317 temp[0] = a->Pos.x - c->Pos.x;
318 temp[1] = -ca;
319 temp[2] = b->Pos.x - a->Pos.x;
320 temp[3] = ba;
321
322 scan.left = ( temp[0] * temp[3] - temp[1] * temp[2] ) > 0.f ? 0 : 1;
323 scan.right = 1 - scan.left;
324
325 // calculate slopes for the major edge
326 scan.slopeX[0] = (c->Pos.x - a->Pos.x) * scan.invDeltaY[0];
327 scan.x[0] = a->Pos.x;
328
329#ifdef IPOL_Z
330 scan.slopeZ[0] = (c->Pos.z - a->Pos.z) * scan.invDeltaY[0];
331 scan.z[0] = a->Pos.z;
332#endif
333
334#ifdef IPOL_W
335 scan.slopeW[0] = (c->Pos.w - a->Pos.w) * scan.invDeltaY[0];
336 scan.w[0] = a->Pos.w;
337#endif
338
339#ifdef IPOL_C0
340 scan.slopeC[0][0] = (c->Color[0] - a->Color[0]) * scan.invDeltaY[0];
341 scan.c[0][0] = a->Color[0];
342#endif
343
344#ifdef IPOL_T0
345 scan.slopeT[0][0] = (c->Tex[0] - a->Tex[0]) * scan.invDeltaY[0];
346 scan.t[0][0] = a->Tex[0];
347#endif
348
349#ifdef IPOL_T1
350 scan.slopeT[1][0] = (c->Tex[1] - a->Tex[1]) * scan.invDeltaY[0];
351 scan.t[1][0] = a->Tex[1];
352#endif
353
354 // top left fill convention y run
355 s32 yStart;
356 s32 yEnd;
357
358#ifdef SUBTEXEL
359 f32 subPixel;
360#endif
361
362
363 // rasterize upper sub-triangle
364 //if ( (f32) 0.0 != scan.invDeltaY[1] )
365 if ( F32_GREATER_0 ( scan.invDeltaY[1] ) )
366 {
367 // calculate slopes for top edge
368 scan.slopeX[1] = (b->Pos.x - a->Pos.x) * scan.invDeltaY[1];
369 scan.x[1] = a->Pos.x;
370
371#ifdef IPOL_Z
372 scan.slopeZ[1] = (b->Pos.z - a->Pos.z) * scan.invDeltaY[1];
373 scan.z[1] = a->Pos.z;
374#endif
375
376#ifdef IPOL_W
377 scan.slopeW[1] = (b->Pos.w - a->Pos.w) * scan.invDeltaY[1];
378 scan.w[1] = a->Pos.w;
379#endif
380
381#ifdef IPOL_C0
382 scan.slopeC[0][1] = (b->Color[0] - a->Color[0]) * scan.invDeltaY[1];
383 scan.c[0][1] = a->Color[0];
384#endif
385
386#ifdef IPOL_T0
387 scan.slopeT[0][1] = (b->Tex[0] - a->Tex[0]) * scan.invDeltaY[1];
388 scan.t[0][1] = a->Tex[0];
389#endif
390
391#ifdef IPOL_T1
392 scan.slopeT[1][1] = (b->Tex[1] - a->Tex[1]) * scan.invDeltaY[1];
393 scan.t[1][1] = a->Tex[1];
394#endif
395
396 // apply top-left fill convention, top part
397 yStart = core::ceil32( a->Pos.y );
398 yEnd = core::ceil32( b->Pos.y ) - 1;
399
400#ifdef SUBTEXEL
401 subPixel = ( (f32) yStart ) - a->Pos.y;
402
403 // correct to pixel center
404 scan.x[0] += scan.slopeX[0] * subPixel;
405 scan.x[1] += scan.slopeX[1] * subPixel;
406
407#ifdef IPOL_Z
408 scan.z[0] += scan.slopeZ[0] * subPixel;
409 scan.z[1] += scan.slopeZ[1] * subPixel;
410#endif
411
412#ifdef IPOL_W
413 scan.w[0] += scan.slopeW[0] * subPixel;
414 scan.w[1] += scan.slopeW[1] * subPixel;
415#endif
416
417#ifdef IPOL_C0
418 scan.c[0][0] += scan.slopeC[0][0] * subPixel;
419 scan.c[0][1] += scan.slopeC[0][1] * subPixel;
420#endif
421
422#ifdef IPOL_T0
423 scan.t[0][0] += scan.slopeT[0][0] * subPixel;
424 scan.t[0][1] += scan.slopeT[0][1] * subPixel;
425#endif
426
427#ifdef IPOL_T1
428 scan.t[1][0] += scan.slopeT[1][0] * subPixel;
429 scan.t[1][1] += scan.slopeT[1][1] * subPixel;
430#endif
431
432#endif
433
434 // rasterize the edge scanlines
435 for( line.y = yStart; line.y <= yEnd; ++line.y)
436 {
437 line.x[scan.left] = scan.x[0];
438 line.x[scan.right] = scan.x[1];
439
440#ifdef IPOL_Z
441 line.z[scan.left] = scan.z[0];
442 line.z[scan.right] = scan.z[1];
443#endif
444
445#ifdef IPOL_W
446 line.w[scan.left] = scan.w[0];
447 line.w[scan.right] = scan.w[1];
448#endif
449
450#ifdef IPOL_C0
451 line.c[0][scan.left] = scan.c[0][0];
452 line.c[0][scan.right] = scan.c[0][1];
453#endif
454
455#ifdef IPOL_T0
456 line.t[0][scan.left] = scan.t[0][0];
457 line.t[0][scan.right] = scan.t[0][1];
458#endif
459
460#ifdef IPOL_T1
461 line.t[1][scan.left] = scan.t[1][0];
462 line.t[1][scan.right] = scan.t[1][1];
463#endif
464
465 // render a scanline
466 scanline_bilinear ();
467
468 scan.x[0] += scan.slopeX[0];
469 scan.x[1] += scan.slopeX[1];
470
471#ifdef IPOL_Z
472 scan.z[0] += scan.slopeZ[0];
473 scan.z[1] += scan.slopeZ[1];
474#endif
475
476#ifdef IPOL_W
477 scan.w[0] += scan.slopeW[0];
478 scan.w[1] += scan.slopeW[1];
479#endif
480
481#ifdef IPOL_C0
482 scan.c[0][0] += scan.slopeC[0][0];
483 scan.c[0][1] += scan.slopeC[0][1];
484#endif
485
486#ifdef IPOL_T0
487 scan.t[0][0] += scan.slopeT[0][0];
488 scan.t[0][1] += scan.slopeT[0][1];
489#endif
490
491#ifdef IPOL_T1
492 scan.t[1][0] += scan.slopeT[1][0];
493 scan.t[1][1] += scan.slopeT[1][1];
494#endif
495
496 }
497 }
498
499 // rasterize lower sub-triangle
500 //if ( (f32) 0.0 != scan.invDeltaY[2] )
501 if ( F32_GREATER_0 ( scan.invDeltaY[2] ) )
502 {
503 // advance to middle point
504 //if( (f32) 0.0 != scan.invDeltaY[1] )
505 if ( F32_GREATER_0 ( scan.invDeltaY[1] ) )
506 {
507 temp[0] = b->Pos.y - a->Pos.y; // dy
508
509 scan.x[0] = a->Pos.x + scan.slopeX[0] * temp[0];
510#ifdef IPOL_Z
511 scan.z[0] = a->Pos.z + scan.slopeZ[0] * temp[0];
512#endif
513#ifdef IPOL_W
514 scan.w[0] = a->Pos.w + scan.slopeW[0] * temp[0];
515#endif
516#ifdef IPOL_C0
517 scan.c[0][0] = a->Color[0] + scan.slopeC[0][0] * temp[0];
518#endif
519#ifdef IPOL_T0
520 scan.t[0][0] = a->Tex[0] + scan.slopeT[0][0] * temp[0];
521#endif
522#ifdef IPOL_T1
523 scan.t[1][0] = a->Tex[1] + scan.slopeT[1][0] * temp[0];
524#endif
525
526 }
527
528 // calculate slopes for bottom edge
529 scan.slopeX[1] = (c->Pos.x - b->Pos.x) * scan.invDeltaY[2];
530 scan.x[1] = b->Pos.x;
531
532#ifdef IPOL_Z
533 scan.slopeZ[1] = (c->Pos.z - b->Pos.z) * scan.invDeltaY[2];
534 scan.z[1] = b->Pos.z;
535#endif
536
537#ifdef IPOL_W
538 scan.slopeW[1] = (c->Pos.w - b->Pos.w) * scan.invDeltaY[2];
539 scan.w[1] = b->Pos.w;
540#endif
541
542#ifdef IPOL_C0
543 scan.slopeC[0][1] = (c->Color[0] - b->Color[0]) * scan.invDeltaY[2];
544 scan.c[0][1] = b->Color[0];
545#endif
546
547#ifdef IPOL_T0
548 scan.slopeT[0][1] = (c->Tex[0] - b->Tex[0]) * scan.invDeltaY[2];
549 scan.t[0][1] = b->Tex[0];
550#endif
551
552#ifdef IPOL_T1
553 scan.slopeT[1][1] = (c->Tex[1] - b->Tex[1]) * scan.invDeltaY[2];
554 scan.t[1][1] = b->Tex[1];
555#endif
556
557 // apply top-left fill convention, top part
558 yStart = core::ceil32( b->Pos.y );
559 yEnd = core::ceil32( c->Pos.y ) - 1;
560
561#ifdef SUBTEXEL
562
563 subPixel = ( (f32) yStart ) - b->Pos.y;
564
565 // correct to pixel center
566 scan.x[0] += scan.slopeX[0] * subPixel;
567 scan.x[1] += scan.slopeX[1] * subPixel;
568
569#ifdef IPOL_Z
570 scan.z[0] += scan.slopeZ[0] * subPixel;
571 scan.z[1] += scan.slopeZ[1] * subPixel;
572#endif
573
574#ifdef IPOL_W
575 scan.w[0] += scan.slopeW[0] * subPixel;
576 scan.w[1] += scan.slopeW[1] * subPixel;
577#endif
578
579#ifdef IPOL_C0
580 scan.c[0][0] += scan.slopeC[0][0] * subPixel;
581 scan.c[0][1] += scan.slopeC[0][1] * subPixel;
582#endif
583
584#ifdef IPOL_T0
585 scan.t[0][0] += scan.slopeT[0][0] * subPixel;
586 scan.t[0][1] += scan.slopeT[0][1] * subPixel;
587#endif
588
589#ifdef IPOL_T1
590 scan.t[1][0] += scan.slopeT[1][0] * subPixel;
591 scan.t[1][1] += scan.slopeT[1][1] * subPixel;
592#endif
593
594#endif
595
596 // rasterize the edge scanlines
597 for( line.y = yStart; line.y <= yEnd; ++line.y)
598 {
599 line.x[scan.left] = scan.x[0];
600 line.x[scan.right] = scan.x[1];
601
602#ifdef IPOL_Z
603 line.z[scan.left] = scan.z[0];
604 line.z[scan.right] = scan.z[1];
605#endif
606
607#ifdef IPOL_W
608 line.w[scan.left] = scan.w[0];
609 line.w[scan.right] = scan.w[1];
610#endif
611
612#ifdef IPOL_C0
613 line.c[0][scan.left] = scan.c[0][0];
614 line.c[0][scan.right] = scan.c[0][1];
615#endif
616
617#ifdef IPOL_T0
618 line.t[0][scan.left] = scan.t[0][0];
619 line.t[0][scan.right] = scan.t[0][1];
620#endif
621
622#ifdef IPOL_T1
623 line.t[1][scan.left] = scan.t[1][0];
624 line.t[1][scan.right] = scan.t[1][1];
625#endif
626
627 // render a scanline
628 scanline_bilinear ();
629
630 scan.x[0] += scan.slopeX[0];
631 scan.x[1] += scan.slopeX[1];
632
633#ifdef IPOL_Z
634 scan.z[0] += scan.slopeZ[0];
635 scan.z[1] += scan.slopeZ[1];
636#endif
637
638#ifdef IPOL_W
639 scan.w[0] += scan.slopeW[0];
640 scan.w[1] += scan.slopeW[1];
641#endif
642
643#ifdef IPOL_C0
644 scan.c[0][0] += scan.slopeC[0][0];
645 scan.c[0][1] += scan.slopeC[0][1];
646#endif
647
648#ifdef IPOL_T0
649 scan.t[0][0] += scan.slopeT[0][0];
650 scan.t[0][1] += scan.slopeT[0][1];
651#endif
652
653#ifdef IPOL_T1
654 scan.t[1][0] += scan.slopeT[1][0];
655 scan.t[1][1] += scan.slopeT[1][1];
656#endif
657
658 }
659 }
660
661}
662
663
664} // end namespace video
665} // end namespace irr
666
667#endif // _IRR_COMPILE_WITH_BURNINGSVIDEO_
668
669namespace irr
670{
671namespace video
672{
673
674
675//! creates a flat triangle renderer
676IBurningShader* createTriangleRendererGTextureLightMap2_M4(CBurningVideoDriver* driver)
677{
678 #ifdef _IRR_COMPILE_WITH_BURNINGSVIDEO_
679 return new CTRGTextureLightMap2_M4(driver);
680 #else
681 return 0;
682 #endif // _IRR_COMPILE_WITH_BURNINGSVIDEO_
683}
684
685
686} // end namespace video
687} // end namespace irr
688
689
690
generated by cgit v1.1 at 2024-06-27 09:16:48 +0000