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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
11namespace irr
12{
13
14namespace video
15{
16
17 /*! Render states define set-up states for all kinds of vertex and pixel processing.
18 Some render states set up vertex processing, and some set up pixel processing (see Render States).
19 Render states can be saved and restored using stateblocks (see State Blocks Save and Restore State).
20 */
21 enum BD3DRENDERSTATETYPE
22 {
23 /*! BD3DRS_ZENABLE
24 Depth-buffering state as one member of the BD3DZBUFFERTYPE enumerated type.
25 Set this state to D3DZB_TRUE to enable z-buffering,
26 D3DZB_USEW to enable w-buffering, or D3DZB_FALSE to disable depth buffering.
27 The default value for this render state is D3DZB_TRUE if a depth stencil was created
28 along with the swap chain by setting the EnableAutoDepthStencil member of the
29 D3DPRESENT_PARAMETERS structure to TRUE, and D3DZB_FALSE otherwise.
30 */
31 BD3DRS_ZENABLE,
32
33 /*! BD3DRS_FILLMODE
34 One or more members of the D3DFILLMODE enumerated type. The default value is D3DFILL_SOLID.
35 */
36 BD3DRS_FILLMODE,
37
38 /*! BD3DRS_SHADEMODE
39 One or more members of the D3DSHADEMODE enumerated type. The default value is D3DSHADE_GOURAUD.
40 */
41 BD3DRS_SHADEMODE,
42
43 /*! BD3DRS_ZWRITEENABLE
44 TRUE to enable the application to write to the depth buffer. The default value is TRUE.
45 This member enables an application to prevent the system from updating the depth buffer with
46 new depth values. If FALSE, depth comparisons are still made according to the render state
47 D3DRS_ZFUNC, assuming that depth buffering is taking place, but depth values are not written
48 to the buffer.
49 */
50 BD3DRS_ZWRITEENABLE,
51
52 /*! BD3DRS_ALPHATESTENABLE
53 TRUE to enable per pixel alpha testing. If the test passes, the pixel is processed by the frame
54 buffer. Otherwise, all frame-buffer processing is skipped for the pixel. The test is done by
55 comparing the incoming alpha value with the reference alpha value, using the comparison function
56 provided by the D3DRS_ALPHAFUNC render state. The reference alpha value is determined by the value
57 set for D3DRS_ALPHAREF. For more information, see Alpha Testing State.
58 The default value of this parameter is FALSE.
59 */
60 BD3DRS_ALPHATESTENABLE,
61
62 /*! BD3DRS_SRCBLEND
63 One member of the BD3DBLEND enumerated type. The default value is BD3DBLEND_ONE.
64 */
65 BD3DRS_SRCBLEND,
66
67 /*! BD3DRS_DESTBLEND
68 One member of the BD3DBLEND enumerated type. The default value is BD3DBLEND_ZERO.
69 */
70 BD3DRS_DESTBLEND,
71
72 /*! BD3DRS_CULLMODE
73 Specifies how back-facing triangles are culled, if at all. This can be set to one
74 member of the BD3DCULL enumerated type. The default value is BD3DCULL_CCW.
75 */
76 BD3DRS_CULLMODE,
77
78 /*! BD3DRS_ZFUNC
79 One member of the BD3DCMPFUNC enumerated type. The default value is BD3DCMP_LESSEQUAL.
80 This member enables an application to accept or reject a pixel, based on its distance from
81 the camera. The depth value of the pixel is compared with the depth-buffer value. If the depth
82 value of the pixel passes the comparison function, the pixel is written.
83
84 The depth value is written to the depth buffer only if the render state is TRUE.
85 Software rasterizers and many hardware accelerators work faster if the depth test fails,
86 because there is no need to filter and modulate the texture if the pixel is not going to be
87 rendered.
88 */
89 BD3DRS_ZFUNC,
90
91 /*! BD3DRS_ALPHAREF
92 Value that specifies a reference alpha value against which pixels are tested when alpha testing
93 is enabled. This is an 8-bit value placed in the low 8 bits of the DWORD render-state value.
94 Values can range from 0x00000000 through 0x000000FF. The default value is 0.
95 */
96 BD3DRS_ALPHAREF,
97
98 /*! BD3DRS_ALPHAFUNC
99 One member of the BD3DCMPFUNC enumerated type. The default value is BD3DCMP_ALWAYS.
100 This member enables an application to accept or reject a pixel, based on its alpha value.
101 */
102 BD3DRS_ALPHAFUNC,
103
104 /*! BD3DRS_DITHERENABLE
105 TRUE to enable dithering. The default value is FALSE.
106 */
107 BD3DRS_DITHERENABLE,
108
109 /*! BD3DRS_ALPHABLENDENABLE
110 TRUE to enable alpha-blended transparency. The default value is FALSE.
111 The type of alpha blending is determined by the BD3DRS_SRCBLEND and BD3DRS_DESTBLEND render states.
112 */
113 BD3DRS_ALPHABLENDENABLE,
114
115 /*! BD3DRS_FOGENABLE
116 TRUE to enable fog blending. The default value is FALSE. For more information about using fog
117 blending, see Fog.
118 */
119 BD3DRS_FOGENABLE,
120
121 /*! BD3DRS_SPECULARENABLE
122 TRUE to enable specular highlights. The default value is FALSE.
123 Specular highlights are calculated as though every vertex in the object being lit is at the
124 object's origin. This gives the expected results as long as the object is modeled around the
125 origin and the distance from the light to the object is relatively large. In other cases, the
126 results as undefined.
127 When this member is set to TRUE, the specular color is added to the base color after the
128 texture cascade but before alpha blending.
129 */
130 BD3DRS_SPECULARENABLE,
131
132 /*! BD3DRS_FOGCOLOR
133 Value whose type is D3DCOLOR. The default value is 0. For more information about fog color,
134 see Fog Color.
135 */
136 BD3DRS_FOGCOLOR,
137
138 /*! BD3DRS_FOGTABLEMODE
139 The fog formula to be used for pixel fog. Set to one of the members of the D3DFOGMODE
140 enumerated type. The default value is D3DFOG_NONE. For more information about pixel fog,
141 see Pixel Fog.
142 */
143 BD3DRS_FOGTABLEMODE,
144
145 /*! BD3DRS_FOGSTART
146 Depth at which pixel or vertex fog effects begin for linear fog mode. The default value is 0.0f.
147 Depth is specified in world space for vertex fog and either device space [0.0, 1.0] or world
148 space for pixel fog. For pixel fog, these values are in device space when the system uses z for
149 fog calculations and world-world space when the system is using eye-relative fog (w-fog). For
150 more information, see Fog Parameters and Eye-Relative vs. Z-based Depth.
151 Values for the this render state are floating-point values.
152 Because the IDirect3DDevice9::SetRenderState method accepts DWORD values, your
153 application must cast a variable that contains the value, as shown in the following code example.
154 pDevice9->SetRenderState( BD3DRS_FOGSTART, *((DWORD*) (&fFogStart)));
155 */
156 BD3DRS_FOGSTART,
157
158 /*! BD3DRS_FOGEND
159 Depth at which pixel or vertex fog effects end for linear fog mode. The default value is 1.0f.
160 Depth is specified in world space for vertex fog and either device space [0.0, 1.0] or world space
161 for pixel fog. For pixel fog, these values are in device space when the system uses z for fog
162 calculations and in world space when the system is using eye-relative fog (w-fog). For more
163 information, see Fog Parameters and Eye-Relative vs. Z-based Depth.
164 Values for this render state are floating-point values.
165 */
166 BD3DRS_FOGEND,
167
168 /*! BD3DRS_FOGDENSITY
169 Fog density for pixel or vertex fog used in the exponential fog modes (D3DFOG_EXP and D3DFOG_EXP2).
170 Valid density values range from 0.0 through 1.0. The default value is 1.0. For more information,
171 see Fog Parameters.
172 Values for this render state are floating-point values.
173 */
174 BD3DRS_FOGDENSITY,
175
176
177 /*! BD3DRS_RANGEFOGENABLE
178 TRUE to enable range-based vertex fog. The default value is FALSE, in which case the system
179 uses depth-based fog. In range-based fog, the distance of an object from the viewer is used
180 to compute fog effects, not the depth of the object (that is, the z-coordinate) in the scene.
181 In range-based fog, all fog methods work as usual, except that they use range instead of depth
182 in the computations.
183 Range is the correct factor to use for fog computations, but depth is commonly used instead
184 because range is time-consuming to compute and depth is generally already available. Using depth
185 to calculate fog has the undesirable effect of having the fogginess of peripheral objects change
186 as the viewer's eye moves - in this case, the depth changes and the range remains constant.
187
188 Because no hardware currently supports per-pixel range-based fog, range correction is offered
189 only for vertex fog.
190 For more information, see Vertex Fog.
191 */
192 BD3DRS_RANGEFOGENABLE = 48,
193
194 /*! BD3DRS_STENCILENABLE
195 TRUE to enable stenciling, or FALSE to disable stenciling. The default value is FALSE.
196 For more information, see Stencil Buffer Techniques.
197 */
198 BD3DRS_STENCILENABLE = 52,
199
200 /*! BD3DRS_STENCILFAIL
201 Stencil operation to perform if the stencil test fails. Values are from the D3DSTENCILOP
202 enumerated type. The default value is D3DSTENCILOP_KEEP.
203 */
204 BD3DRS_STENCILFAIL = 53,
205
206 /*! BD3DRS_STENCILZFAIL
207 Stencil operation to perform if the stencil test passes and the depth test (z-test) fails.
208 Values are from the D3DSTENCILOP enumerated type. The default value is D3DSTENCILOP_KEEP.
209 */
210 BD3DRS_STENCILZFAIL = 54,
211
212 /*! BD3DRS_STENCILPASS
213 Stencil operation to perform if both the stencil and the depth (z) tests pass. Values are
214 from the D3DSTENCILOP enumerated type. The default value is D3DSTENCILOP_KEEP.
215 */
216 BD3DRS_STENCILPASS = 55,
217
218 /*! BD3DRS_STENCILFUNC
219 Comparison function for the stencil test. Values are from the D3DCMPFUNC enumerated type.
220 The default value is D3DCMP_ALWAYS.
221 The comparison function is used to compare the reference value to a stencil buffer entry.
222 This comparison applies only to the bits in the reference value and stencil buffer entry that
223 are set in the stencil mask (set by the D3DRS_STENCILMASK render state). If TRUE, the stencil
224 test passes.
225 */
226 BD3DRS_STENCILFUNC = 56,
227
228 /*! BD3DRS_STENCILREF
229 An int reference value for the stencil test. The default value is 0.
230 */
231 BD3DRS_STENCILREF = 57,
232
233 /*! BD3DRS_STENCILMASK
234 Mask applied to the reference value and each stencil buffer entry to determine the significant
235 bits for the stencil test. The default mask is 0xFFFFFFFF.
236 */
237 BD3DRS_STENCILMASK = 58,
238
239 /*! BD3DRS_STENCILWRITEMASK
240 Write mask applied to values written into the stencil buffer. The default mask is 0xFFFFFFFF.
241 */
242 BD3DRS_STENCILWRITEMASK = 59,
243
244 /*! BD3DRS_TEXTUREFACTOR
245 Color used for multiple-texture blending with the D3DTA_TFACTOR texture-blending argument or the
246 D3DTOP_BLENDFACTORALPHA texture-blending operation. The associated value is a D3DCOLOR variable.
247 The default value is opaque white (0xFFFFFFFF).
248 */
249 BD3DRS_TEXTUREFACTOR = 60,
250
251 /*! BD3DRS_WRAP0
252 Texture-wrapping behavior for multiple sets of texture coordinates. Valid values for this
253 render state can be any combination of the D3DWRAPCOORD_0 (or D3DWRAP_U), D3DWRAPCOORD_1
254 (or D3DWRAP_V), D3DWRAPCOORD_2 (or D3DWRAP_W), and D3DWRAPCOORD_3 flags. These cause the system
255 to wrap in the direction of the first, second, third, and fourth dimensions, sometimes referred
256 to as the s, t, r, and q directions, for a given texture. The default value for this render state
257 is 0 (wrapping disabled in all directions).
258 */
259 BD3DRS_WRAP0 = 128,
260 BD3DRS_WRAP1 = 129,
261 BD3DRS_WRAP2 = 130,
262 BD3DRS_WRAP3 = 131,
263 BD3DRS_WRAP4 = 132,
264 BD3DRS_WRAP5 = 133,
265 BD3DRS_WRAP6 = 134,
266 BD3DRS_WRAP7 = 135,
267
268 /*! BD3DRS_CLIPPING
269 TRUE to enable primitive clipping by Direct3D, or FALSE to disable it. The default value is TRUE.
270 */
271 BD3DRS_CLIPPING = 136,
272
273 /*! BD3DRS_LIGHTING
274 TRUE to enable Direct3D lighting, or FALSE to disable it. The default value is TRUE. Only
275 vertices that include a vertex normal are properly lit; vertices that do not contain a normal
276 employ a dot product of 0 in all lighting calculations.
277 */
278 BD3DRS_LIGHTING = 137,
279
280 /*! D3DRS_AMBIENT
281 Ambient light color. This value is of type D3DCOLOR. The default value is 0.
282 */
283 BD3DRS_AMBIENT = 139,
284
285 /*! BD3DRS_FOGVERTEXMODE
286 Fog formula to be used for vertex fog. Set to one member of the BD3DFOGMODE enumerated type.
287 The default value is D3DFOG_NONE.
288 */
289 BD3DRS_FOGVERTEXMODE = 140,
290
291 /*! BD3DRS_COLORVERTEX
292 TRUE to enable per-vertex color or FALSE to disable it. The default value is TRUE. Enabling
293 per-vertex color allows the system to include the color defined for individual vertices in its
294 lighting calculations.
295 For more information, see the following render states:
296 BD3DRS_DIFFUSEMATERIALSOURCE
297 BD3DRS_SPECULARMATERIALSOURCE
298 BD3DRS_AMBIENTMATERIALSOURCE
299 BD3DRS_EMISSIVEMATERIALSOURCE
300 */
301 BD3DRS_COLORVERTEX = 141,
302
303 /*! BD3DRS_LOCALVIEWER
304 TRUE to enable camera-relative specular highlights, or FALSE to use orthogonal specular
305 highlights. The default value is TRUE. Applications that use orthogonal projection should
306 specify false.
307 */
308 BD3DRS_LOCALVIEWER = 142,
309
310 /*! BD3DRS_NORMALIZENORMALS
311 TRUE to enable automatic normalization of vertex normals, or FALSE to disable it. The default
312 value is FALSE. Enabling this feature causes the system to normalize the vertex normals for
313 vertices after transforming them to camera space, which can be computationally time-consuming.
314 */
315 BD3DRS_NORMALIZENORMALS = 143,
316
317 /*! BD3DRS_DIFFUSEMATERIALSOURCE
318 Diffuse color source for lighting calculations. Valid values are members of the
319 D3DMATERIALCOLORSOURCE enumerated type. The default value is D3DMCS_COLOR1. The value for this
320 render state is used only if the D3DRS_COLORVERTEX render state is set to TRUE.
321 */
322 BD3DRS_DIFFUSEMATERIALSOURCE = 145,
323
324 /*! BD3DRS_SPECULARMATERIALSOURCE
325 Specular color source for lighting calculations. Valid values are members of the
326 D3DMATERIALCOLORSOURCE enumerated type. The default value is D3DMCS_COLOR2.
327 */
328 BD3DRS_SPECULARMATERIALSOURCE = 146,
329
330 /*! D3DRS_AMBIENTMATERIALSOURCE
331 Ambient color source for lighting calculations. Valid values are members of the
332 D3DMATERIALCOLORSOURCE enumerated type. The default value is D3DMCS_MATERIAL.
333 */
334 BD3DRS_AMBIENTMATERIALSOURCE = 147,
335
336 /*! D3DRS_EMISSIVEMATERIALSOURCE
337 Emissive color source for lighting calculations. Valid values are members of the
338 D3DMATERIALCOLORSOURCE enumerated type. The default value is D3DMCS_MATERIAL.
339 */
340 BD3DRS_EMISSIVEMATERIALSOURCE = 148,
341
342 /*! D3DRS_VERTEXBLEND
343 Number of matrices to use to perform geometry blending, if any. Valid values are members
344 of the D3DVERTEXBLENDFLAGS enumerated type. The default value is D3DVBF_DISABLE.
345 */
346 BD3DRS_VERTEXBLEND = 151,
347
348 /* D3DRS_CLIPPLANEENABLE
349 Enables or disables user-defined clipping planes. Valid values are any DWORD in which the
350 status of each bit (set or not set) toggles the activation state of a corresponding user-defined
351 clipping plane. The least significant bit (bit 0) controls the first clipping plane at index 0,
352 and subsequent bits control the activation of clipping planes at higher indexes. If a bit is set,
353 the system applies the appropriate clipping plane during scene rendering. The default value is 0.
354 The D3DCLIPPLANEn macros are defined to provide a convenient way to enable clipping planes.
355 */
356 BD3DRS_CLIPPLANEENABLE = 152,
357 BD3DRS_POINTSIZE = 154,
358 BD3DRS_POINTSIZE_MIN = 155,
359 BD3DRS_POINTSPRITEENABLE = 156,
360 BD3DRS_POINTSCALEENABLE = 157,
361 BD3DRS_POINTSCALE_A = 158,
362 BD3DRS_POINTSCALE_B = 159,
363 BD3DRS_POINTSCALE_C = 160,
364 BD3DRS_MULTISAMPLEANTIALIAS = 161,
365 BD3DRS_MULTISAMPLEMASK = 162,
366 BD3DRS_PATCHEDGESTYLE = 163,
367 BD3DRS_DEBUGMONITORTOKEN = 165,
368 BD3DRS_POINTSIZE_MAX = 166,
369 BD3DRS_INDEXEDVERTEXBLENDENABLE = 167,
370 BD3DRS_COLORWRITEENABLE = 168,
371 BD3DRS_TWEENFACTOR = 170,
372 BD3DRS_BLENDOP = 171,
373 BD3DRS_POSITIONDEGREE = 172,
374 BD3DRS_NORMALDEGREE = 173,
375 BD3DRS_SCISSORTESTENABLE = 174,
376 BD3DRS_SLOPESCALEDEPTHBIAS = 175,
377 BD3DRS_ANTIALIASEDLINEENABLE = 176,
378 BD3DRS_MINTESSELLATIONLEVEL = 178,
379 BD3DRS_MAXTESSELLATIONLEVEL = 179,
380 BD3DRS_ADAPTIVETESS_X = 180,
381 BD3DRS_ADAPTIVETESS_Y = 181,
382 BD3DRS_ADAPTIVETESS_Z = 182,
383 BD3DRS_ADAPTIVETESS_W = 183,
384 BD3DRS_ENABLEADAPTIVETESSELLATION = 184,
385 BD3DRS_TWOSIDEDSTENCILMODE = 185,
386 BD3DRS_CCW_STENCILFAIL = 186,
387 BD3DRS_CCW_STENCILZFAIL = 187,
388 BD3DRS_CCW_STENCILPASS = 188,
389 BD3DRS_CCW_STENCILFUNC = 189,
390 BD3DRS_COLORWRITEENABLE1 = 190,
391 BD3DRS_COLORWRITEENABLE2 = 191,
392 BD3DRS_COLORWRITEENABLE3 = 192,
393 BD3DRS_BLENDFACTOR = 193,
394 BD3DRS_SRGBWRITEENABLE = 194,
395 BD3DRS_DEPTHBIAS = 195,
396 BD3DRS_WRAP8 = 198,
397 BD3DRS_WRAP9 = 199,
398 BD3DRS_WRAP10 = 200,
399 BD3DRS_WRAP11 = 201,
400 BD3DRS_WRAP12 = 202,
401 BD3DRS_WRAP13 = 203,
402 BD3DRS_WRAP14 = 204,
403 BD3DRS_WRAP15 = 205,
404 BD3DRS_SEPARATEALPHABLENDENABLE = 206,
405 BD3DRS_SRCBLENDALPHA = 207,
406 BD3DRS_DESTBLENDALPHA = 208,
407 BD3DRS_BLENDOPALPHA = 209,
408
409 BD3DRS_MAX_TYPE
410 };
411
412
413
414 /*! Defines constants that describe depth-buffer formats
415 Members of this enumerated type are used with the D3DRS_ZENABLE render state.
416 */
417 enum BD3DZBUFFERTYPE
418 {
419 BD3DZB_FALSE = 0, // Disable depth buffering
420 BD3DZB_TRUE = 1, // Enable z-buffering
421 BD3DZB_USEW = 2 //Enable w-buffering.
422 };
423
424 //! Defines the supported compare functions.
425 enum BD3DCMPFUNC
426 {
427 BD3DCMP_NEVER = 1,// Always fail the test.
428 BD3DCMP_LESS, // Accept the new pixel if its value is less than the value of the current pixel.
429 BD3DCMP_EQUAL, // Accept the new pixel if its value equals the value of the current pixel.
430 BD3DCMP_LESSEQUAL, // Accept the new pixel if its value is less than or equal to the value of the current pixel.
431 BD3DCMP_GREATER, // Accept the new pixel if its value is greater than the value of the current pixel.
432 BD3DCMP_NOTEQUAL, // Accept the new pixel if its value does not equal the value of the current pixel.
433 BD3DCMP_GREATEREQUAL,// Accept the new pixel if its value is greater than or equal to the value of the current pixel.
434 BD3DCMP_ALWAYS // Always pass the test.
435 };
436
437 enum BD3DMATERIALCOLORSOURCE
438 {
439 BD3DMCS_MATERIAL = 0, // Use the color from the current material.
440 BD3DMCS_COLOR1 = 1, // Use the diffuse vertex color.
441 BD3DMCS_COLOR2 = 2 // Use the specular vertex color.
442 };
443
444
445 //! Defines constants that describe the supported shading modes.
446 enum BD3DSHADEMODE
447 {
448 /*! BD3DSHADE_FLAT
449 Flat shading mode. The color and specular component of the first vertex in the triangle
450 are used to determine the color and specular component of the face. These colors remain
451 constant across the triangle; that is, they are not interpolated. The specular alpha is
452 interpolated.
453 */
454 BD3DSHADE_FLAT = 1,
455
456 /*! BD3DSHADE_GOURAUD
457 Gouraud shading mode. The color and specular components of the face are determined by a
458 linear interpolation between all three of the triangle's vertices.
459 */
460 BD3DSHADE_GOURAUD = 2,
461
462 /*! BD3DSHADE_PHONG
463 Not supported.
464 */
465 BD3DSHADE_PHONG = 3
466 };
467
468 /*! Defines constants describing the fill mode
469 The values in this enumerated type are used by the BD3DRS_FILLMODE render state
470 */
471 enum BD3DFILLMODE
472 {
473 BD3DFILL_POINT = 1, // Fill points.
474 BD3DFILL_WIREFRAME = 2, // Fill wireframes.
475 BD3DFILL_SOLID = 3 // Fill solids.
476 };
477
478
479
480 /*! Defines the supported culling modes.
481 The values in this enumerated type are used by the B3DRS_CULLMODE render state.
482 The culling modes define how back faces are culled when rendering a geometry.
483 */
484 enum BD3DCULL
485 {
486 BD3DCULL_NONE = 1, // Do not cull back faces.
487 BD3DCULL_CW = 2, // Cull back faces with clockwise vertices.
488 BD3DCULL_CCW = 3 // Cull back faces with counterclockwise vertices.
489 };
490
491 struct SShaderParam
492 {
493 u32 ColorUnits;
494 u32 TextureUnits;
495
496 u32 RenderState [ BD3DRS_MAX_TYPE ];
497 void SetRenderState ( BD3DRENDERSTATETYPE state, u32 value );
498 };
499
500 void SShaderParam::SetRenderState ( BD3DRENDERSTATETYPE state, u32 value )
501 {
502 RenderState [ state ] = value;
503 }
504
505
506
507class CBurningShader_Raster_Reference : public IBurningShader
508{
509public:
510
511 //! constructor
512 CBurningShader_Raster_Reference(CBurningVideoDriver* driver);
513
514 //! draws an indexed triangle list
515 virtual void drawTriangle ( const s4DVertex *a,const s4DVertex *b,const s4DVertex *c );
516
517 virtual void setMaterial ( const SBurningShaderMaterial &material );
518
519
520private:
521 void scanline ();
522 void scanline2 ();
523
524 sScanLineData line;
525 sPixelShaderData pShader;
526
527 void pShader_1 ();
528 void pShader_EMT_LIGHTMAP_M4 ();
529
530 SShaderParam ShaderParam;
531
532 REALINLINE u32 depthFunc ();
533 REALINLINE void depthWrite ();
534
535
536};
537
538//! constructor
539CBurningShader_Raster_Reference::CBurningShader_Raster_Reference(CBurningVideoDriver* driver)
540: IBurningShader(driver)
541{
542 #ifdef _DEBUG
543 setDebugName("CBurningShader_Raster_Reference");
544 #endif
545}
546
547
548/*!
549*/
550void CBurningShader_Raster_Reference::pShader_EMT_LIGHTMAP_M4 ()
551{
552 tFixPoint r0, g0, b0;
553 tFixPoint r1, g1, b1;
554
555 f32 inversew = fix_inverse32 ( line.w[0] );
556
557 getSample_texture ( r0, g0, b0, &IT[0], tofix ( line.t[0][0].x,inversew), tofix ( line.t[0][0].y,inversew) );
558 getSample_texture ( r1, g1, b1, &IT[1], tofix ( line.t[1][0].x,inversew), tofix ( line.t[1][0].y,inversew) );
559
560
561 pShader.dst[pShader.i] = fix_to_color ( clampfix_maxcolor ( imulFix_tex2 ( r0, r1 ) ),
562 clampfix_maxcolor ( imulFix_tex2 ( g0, g1 ) ),
563 clampfix_maxcolor ( imulFix_tex2 ( b0, b1 ) )
564 );
565
566}
567
568/*!
569*/
570void CBurningShader_Raster_Reference::pShader_1 ()
571{
572 tFixPoint r0, g0, b0;
573 tFixPoint tx0, ty0;
574
575 const f32 inversew = fix_inverse32 ( line.w[0] );
576
577 tx0 = tofix ( line.t[0][0].x, inversew );
578 ty0 = tofix ( line.t[0][0].y, inversew );
579
580 getSample_texture ( r0, g0, b0, &IT[0], tx0, ty0 );
581 pShader.dst[pShader.i] = fix_to_color ( r0, g0, b0 );
582
583}
584
585
586/*!
587*/
588void CBurningShader_Raster_Reference::setMaterial ( const SBurningShaderMaterial &material )
589{
590 const video::SMaterial &m = material.org;
591
592 u32 i;
593 u32 enable;
594
595 ShaderParam.ColorUnits = 0;
596 ShaderParam.TextureUnits = 0;
597 for ( i = 0; i != BURNING_MATERIAL_MAX_TEXTURES; ++i )
598 {
599 if ( m.getTexture( i ) )
600 ShaderParam.TextureUnits = i;
601 }
602
603 // shademode
604 ShaderParam.SetRenderState( BD3DRS_SHADEMODE,
605 m.GouraudShading ? BD3DSHADE_GOURAUD : BD3DSHADE_FLAT
606 );
607
608 // fillmode
609 ShaderParam.SetRenderState( BD3DRS_FILLMODE,
610 m.Wireframe ? BD3DFILL_WIREFRAME : m.PointCloud ? BD3DFILL_POINT : BD3DFILL_SOLID
611 );
612
613 // back face culling
614 ShaderParam.SetRenderState( BD3DRS_CULLMODE,
615 m.BackfaceCulling ? BD3DCULL_CCW : BD3DCULL_NONE
616 );
617
618 // lighting
619 ShaderParam.SetRenderState( BD3DRS_LIGHTING, m.Lighting );
620
621 // specular highlights
622 enable = F32_LOWER_EQUAL_0 ( m.Shininess );
623 ShaderParam.SetRenderState( BD3DRS_SPECULARENABLE, enable);
624 ShaderParam.SetRenderState( BD3DRS_NORMALIZENORMALS, enable);
625 ShaderParam.SetRenderState( BD3DRS_SPECULARMATERIALSOURCE, (m.ColorMaterial==ECM_SPECULAR)?BD3DMCS_COLOR1:BD3DMCS_MATERIAL);
626
627 // depth buffer enable and compare
628 ShaderParam.SetRenderState( BD3DRS_ZENABLE, (material.org.ZBuffer==video::ECFN_NEVER) ? BD3DZB_FALSE : BD3DZB_USEW);
629 switch (material.org.ZBuffer)
630 {
631 case ECFN_NEVER:
632 ShaderParam.SetRenderState(BD3DRS_ZFUNC, BD3DCMP_NEVER);
633 break;
634 case ECFN_LESSEQUAL:
635 ShaderParam.SetRenderState(BD3DRS_ZFUNC, BD3DCMP_LESSEQUAL);
636 break;
637 case ECFN_EQUAL:
638 ShaderParam.SetRenderState(BD3DRS_ZFUNC, BD3DCMP_EQUAL);
639 break;
640 case ECFN_LESS:
641 ShaderParam.SetRenderState(BD3DRS_ZFUNC, BD3DCMP_LESSEQUAL);
642 break;
643 case ECFN_NOTEQUAL:
644 ShaderParam.SetRenderState(BD3DRS_ZFUNC, BD3DCMP_NOTEQUAL);
645 break;
646 case ECFN_GREATEREQUAL:
647 ShaderParam.SetRenderState(BD3DRS_ZFUNC, BD3DCMP_GREATEREQUAL);
648 break;
649 case ECFN_GREATER:
650 ShaderParam.SetRenderState(BD3DRS_ZFUNC, BD3DCMP_GREATER);
651 break;
652 case ECFN_ALWAYS:
653 ShaderParam.SetRenderState(BD3DRS_ZFUNC, BD3DCMP_ALWAYS);
654 break;
655 }
656
657 // depth buffer write
658 ShaderParam.SetRenderState( BD3DRS_ZWRITEENABLE, m.ZWriteEnable );
659}
660
661/*!
662*/
663REALINLINE u32 CBurningShader_Raster_Reference::depthFunc ()
664{
665 if ( ShaderParam.RenderState [ BD3DRS_ZENABLE ] )
666 {
667 switch ( ShaderParam.RenderState [ BD3DRS_ZFUNC ] )
668 {
669 case BD3DCMP_LESSEQUAL:
670 return line.w[0] >= pShader.z[ pShader.i];
671 case BD3DCMP_EQUAL:
672 return line.w[0] == pShader.z[ pShader.i];
673 }
674 }
675 return 1;
676}
677
678/*!
679*/
680REALINLINE void CBurningShader_Raster_Reference::depthWrite ()
681{
682 if ( ShaderParam.RenderState [ BD3DRS_ZWRITEENABLE ] )
683 {
684 pShader.z[pShader.i] = line.w[0];
685 }
686}
687
688/*!
689*/
690REALINLINE void CBurningShader_Raster_Reference::scanline2()
691{
692 // apply top-left fill-convention, left
693 pShader.xStart = core::ceil32( line.x[0] );
694 pShader.xEnd = core::ceil32( line.x[1] ) - 1;
695
696 pShader.dx = pShader.xEnd - pShader.xStart;
697 if ( pShader.dx < 0 )
698 return;
699
700 // slopes
701 const f32 invDeltaX = core::reciprocal ( line.x[1] - line.x[0] );
702 const f32 subPixel = ( (f32) pShader.xStart ) - line.x[0];
703
704 // store slopes in endpoint, and correct first pixel
705
706 line.w[0] += (line.w[1] = (line.w[1] - line.w[0]) * invDeltaX) * subPixel;
707
708 u32 i;
709
710#ifdef SOFTWARE_DRIVER_2_USE_VERTEX_COLOR
711 for ( i = 0; i != ShaderParam.ColorUnits; ++i )
712 {
713 line.c[i][1] = (line.c[i][1] - line.c[i][0]) * invDeltaX;
714 line.c[i][0] += line.c[i][1] * subPixel;
715 }
716#endif
717
718 for ( i = 0; i != ShaderParam.TextureUnits; ++i )
719 {
720 line.t[i][1] = (line.t[i][1] - line.t[i][0]) * invDeltaX;
721 line.t[i][0] += line.t[i][1] * subPixel;
722 }
723
724 pShader.dst = (tVideoSample*) ( (u8*) RenderTarget->lock() + ( line.y * RenderTarget->getPitch() ) + ( pShader.xStart << VIDEO_SAMPLE_GRANULARITY ) );
725 pShader.z = (fp24*) ( (u8*) DepthBuffer->lock() + ( line.y * DepthBuffer->getPitch() ) + ( pShader.xStart << VIDEO_SAMPLE_GRANULARITY ) );
726
727 for ( pShader.i = 0; pShader.i <= pShader.dx; ++pShader.i )
728 {
729 if ( depthFunc() )
730 {
731 depthWrite ();
732 }
733
734 // advance next pixel
735 line.w[0] += line.w[1];
736
737#ifdef SOFTWARE_DRIVER_2_USE_VERTEX_COLOR
738 for ( i = 0; i != ShaderParam.ColorUnits; ++i )
739 {
740 line.c[i][0] += line.c[i][1];
741 }
742#endif
743 for ( i = 0; i != ShaderParam.TextureUnits; ++i )
744 {
745 line.t[i][0] += line.t[i][1];
746 }
747 }
748}
749
750
751/*!
752*/
753REALINLINE void CBurningShader_Raster_Reference::scanline ()
754{
755 u32 i;
756
757 // apply top-left fill-convention, left
758 pShader.xStart = core::ceil32( line.x[0] );
759 pShader.xEnd = core::ceil32( line.x[1] ) - 1;
760
761 pShader.dx = pShader.xEnd - pShader.xStart;
762 if ( pShader.dx < 0 )
763 return;
764
765 // slopes
766 const f32 invDeltaX = core::reciprocal ( line.x[1] - line.x[0] );
767
768 // search z-buffer for first not occulled pixel
769 pShader.z = (fp24*) ( (u8*) DepthBuffer->lock() + ( line.y * DepthBuffer->getPitch() ) + ( pShader.xStart << VIDEO_SAMPLE_GRANULARITY ) );
770
771 // subTexel
772 const f32 subPixel = ( (f32) pShader.xStart ) - line.x[0];
773
774 const f32 b = (line.w[1] - line.w[0]) * invDeltaX;
775 f32 a = line.w[0] + ( b * subPixel );
776
777 pShader.i = 0;
778
779 if ( ShaderParam.RenderState [ BD3DRS_ZENABLE ] )
780 {
781 u32 condition;
782 switch ( ShaderParam.RenderState [ BD3DRS_ZFUNC ] )
783 {
784 case BD3DCMP_LESSEQUAL:
785 condition = a < pShader.z[pShader.i];
786 break;
787 case BD3DCMP_EQUAL:
788 condition = a != pShader.z[pShader.i];
789 break;
790 }
791 while ( a < pShader.z[pShader.i] )
792 {
793 a += b;
794
795 pShader.i += 1;
796 if ( pShader.i > pShader.dx )
797 return;
798
799 }
800 }
801
802 // lazy setup rest of scanline
803
804 line.w[0] = a;
805 line.w[1] = b;
806
807 pShader.dst = (tVideoSample*) ( (u8*) RenderTarget->lock() + ( line.y * RenderTarget->getPitch() ) + ( pShader.xStart << VIDEO_SAMPLE_GRANULARITY ) );
808
809 a = (f32) pShader.i + subPixel;
810
811#ifdef SOFTWARE_DRIVER_2_USE_VERTEX_COLOR
812 for ( i = 0; i != ShaderParam.ColorUnits; ++i )
813 {
814 line.c[i][1] = (line.c[i][1] - line.c[i][0]) * invDeltaX;
815 line.c[i][0] += line.c[i][1] * a;
816 }
817#endif
818
819 for ( i = 0; i != ShaderParam.TextureUnits; ++i )
820 {
821 line.t[i][1] = (line.t[i][1] - line.t[i][0]) * invDeltaX;
822 line.t[i][0] += line.t[i][1] * a;
823 }
824
825 for ( ; pShader.i <= pShader.dx; ++pShader.i )
826 {
827 if ( line.w[0] >= pShader.z[pShader.i] )
828 {
829 pShader.z[pShader.i] = line.w[0];
830
831 pShader_EMT_LIGHTMAP_M4 ();
832 }
833
834 line.w[0] += line.w[1];
835
836#ifdef SOFTWARE_DRIVER_2_USE_VERTEX_COLOR
837 for ( i = 0; i != ShaderParam.ColorUnits; ++i )
838 {
839 line.c[i][0] += line.c[i][1];
840 }
841#endif
842 for ( i = 0; i != ShaderParam.TextureUnits; ++i )
843 {
844 line.t[i][0] += line.t[i][1];
845 }
846 }
847
848}
849
850
851
852void CBurningShader_Raster_Reference::drawTriangle ( const s4DVertex *a,const s4DVertex *b,const s4DVertex *c )
853{
854 sScanConvertData scan;
855 u32 i;
856
857 // sort on height, y
858 if ( F32_A_GREATER_B ( a->Pos.y , b->Pos.y ) ) swapVertexPointer(&a, &b);
859 if ( F32_A_GREATER_B ( b->Pos.y , c->Pos.y ) ) swapVertexPointer(&b, &c);
860 if ( F32_A_GREATER_B ( a->Pos.y , b->Pos.y ) ) swapVertexPointer(&a, &b);
861
862
863 // calculate delta y of the edges
864 scan.invDeltaY[0] = core::reciprocal ( c->Pos.y - a->Pos.y );
865 scan.invDeltaY[1] = core::reciprocal ( b->Pos.y - a->Pos.y );
866 scan.invDeltaY[2] = core::reciprocal ( c->Pos.y - b->Pos.y );
867
868 if ( F32_LOWER_EQUAL_0 ( scan.invDeltaY[0] ) )
869 return;
870
871
872 // find if the major edge is left or right aligned
873 f32 temp[4];
874
875 temp[0] = a->Pos.x - c->Pos.x;
876 temp[1] = a->Pos.y - c->Pos.y;
877 temp[2] = b->Pos.x - a->Pos.x;
878 temp[3] = b->Pos.y - a->Pos.y;
879
880 scan.left = ( temp[0] * temp[3] - temp[1] * temp[2] ) > (f32) 0.0 ? 0 : 1;
881 scan.right = 1 - scan.left;
882
883 // calculate slopes for the major edge
884 scan.slopeX[0] = (c->Pos.x - a->Pos.x) * scan.invDeltaY[0];
885 scan.x[0] = a->Pos.x;
886
887 scan.slopeW[0] = (c->Pos.w - a->Pos.w) * scan.invDeltaY[0];
888 scan.w[0] = a->Pos.w;
889
890#ifdef SOFTWARE_DRIVER_2_USE_VERTEX_COLOR
891 for ( i = 0; i != ShaderParam.ColorUnits; ++i )
892 {
893 scan.c[i][0] = a->Color[i];
894 scan.slopeC[i][0] = (c->Color[i] - a->Color[i]) * scan.invDeltaY[0];
895 }
896#endif
897
898 for ( i = 0; i != ShaderParam.TextureUnits; ++i )
899 {
900 scan.t[i][0] = a->Tex[i];
901 scan.slopeT[i][0] = (c->Tex[i] - a->Tex[i]) * scan.invDeltaY[0];
902 }
903
904 // top left fill convention y run
905 s32 yStart;
906 s32 yEnd;
907
908 f32 subPixel;
909
910 // rasterize upper sub-triangle
911 if ( F32_GREATER_0 ( scan.invDeltaY[1] ) )
912 {
913 // calculate slopes for top edge
914 scan.slopeX[1] = (b->Pos.x - a->Pos.x) * scan.invDeltaY[1];
915 scan.x[1] = a->Pos.x;
916
917 scan.slopeW[1] = (b->Pos.w - a->Pos.w) * scan.invDeltaY[1];
918 scan.w[1] = a->Pos.w;
919
920#ifdef SOFTWARE_DRIVER_2_USE_VERTEX_COLOR
921 for ( i = 0; i != ShaderParam.ColorUnits; ++i )
922 {
923 scan.c[i][1] = a->Color[i];
924 scan.slopeC[i][1] = (b->Color[i] - a->Color[i]) * scan.invDeltaY[1];
925 }
926#endif
927 for ( i = 0; i != ShaderParam.TextureUnits; ++i )
928 {
929 scan.t[i][1] = a->Tex[i];
930 scan.slopeT[i][1] = (b->Tex[i] - a->Tex[i]) * scan.invDeltaY[1];
931 }
932
933 // apply top-left fill convention, top part
934 yStart = core::ceil32( a->Pos.y );
935 yEnd = core::ceil32( b->Pos.y ) - 1;
936
937 subPixel = ( (f32) yStart ) - a->Pos.y;
938
939 // correct to pixel center
940 scan.x[0] += scan.slopeX[0] * subPixel;
941 scan.x[1] += scan.slopeX[1] * subPixel;
942
943 scan.w[0] += scan.slopeW[0] * subPixel;
944 scan.w[1] += scan.slopeW[1] * subPixel;
945
946 for ( i = 0; i != ShaderParam.ColorUnits; ++i )
947 {
948 scan.c[i][0] += scan.slopeC[i][0] * subPixel;
949 scan.c[i][1] += scan.slopeC[i][1] * subPixel;
950 }
951
952 for ( i = 0; i != ShaderParam.TextureUnits; ++i )
953 {
954 scan.t[i][0] += scan.slopeT[i][0] * subPixel;
955 scan.t[i][1] += scan.slopeT[i][1] * subPixel;
956 }
957
958 // rasterize the edge scanlines
959 for( line.y = yStart; line.y <= yEnd; ++line.y)
960 {
961 line.x[scan.left] = scan.x[0];
962 line.w[scan.left] = scan.w[0];
963
964 line.x[scan.right] = scan.x[1];
965 line.w[scan.right] = scan.w[1];
966
967#ifdef SOFTWARE_DRIVER_2_USE_VERTEX_COLOR
968 for ( i = 0; i != ShaderParam.ColorUnits; ++i )
969 {
970 line.c[i][scan.left] = scan.c[i][0];
971 line.c[i][scan.right] = scan.c[i][1];
972 }
973#endif
974 for ( i = 0; i != ShaderParam.TextureUnits; ++i )
975 {
976 line.t[i][scan.left] = scan.t[i][0];
977 line.t[i][scan.right] = scan.t[i][1];
978 }
979
980 // render a scanline
981 scanline ();
982
983 scan.x[0] += scan.slopeX[0];
984 scan.x[1] += scan.slopeX[1];
985
986 scan.w[0] += scan.slopeW[0];
987 scan.w[1] += scan.slopeW[1];
988
989 for ( i = 0; i != ShaderParam.ColorUnits; ++i )
990 {
991 scan.c[i][0] += scan.slopeC[i][0];
992 scan.c[i][1] += scan.slopeC[i][1];
993 }
994
995 for ( i = 0; i != ShaderParam.TextureUnits; ++i )
996 {
997 scan.t[i][0] += scan.slopeT[i][0];
998 scan.t[i][1] += scan.slopeT[i][1];
999 }
1000
1001 }
1002 }
1003
1004 // rasterize lower sub-triangle
1005 if ( F32_GREATER_0 ( scan.invDeltaY[2] ) )
1006 {
1007 // advance to middle point
1008 if ( F32_GREATER_0 ( scan.invDeltaY[1] ) )
1009 {
1010 temp[0] = b->Pos.y - a->Pos.y; // dy
1011
1012 scan.x[0] = a->Pos.x + scan.slopeX[0] * temp[0];
1013 scan.w[0] = a->Pos.w + scan.slopeW[0] * temp[0];
1014
1015#ifdef SOFTWARE_DRIVER_2_USE_VERTEX_COLOR
1016 for ( i = 0; i != ShaderParam.ColorUnits; ++i )
1017 {
1018 scan.c[i][0] = a->Color[i] + scan.slopeC[i][0] * temp[0];
1019 }
1020#endif
1021 for ( i = 0; i != ShaderParam.TextureUnits; ++i )
1022 {
1023 scan.t[i][0] = a->Tex[i] + scan.slopeT[i][0] * temp[0];
1024 }
1025 }
1026
1027 // calculate slopes for bottom edge
1028 scan.slopeX[1] = (c->Pos.x - b->Pos.x) * scan.invDeltaY[2];
1029 scan.x[1] = b->Pos.x;
1030
1031 scan.slopeW[1] = (c->Pos.w - b->Pos.w) * scan.invDeltaY[2];
1032 scan.w[1] = b->Pos.w;
1033
1034#ifdef SOFTWARE_DRIVER_2_USE_VERTEX_COLOR
1035 for ( i = 0; i != ShaderParam.ColorUnits; ++i )
1036 {
1037 scan.c[i][1] = b->Color[i];
1038 scan.slopeC[i][1] = (c->Color[i] - b->Color[i]) * scan.invDeltaY[2];
1039 }
1040#endif
1041 for ( i = 0; i != ShaderParam.TextureUnits; ++i )
1042 {
1043 scan.t[i][1] = b->Tex[i];
1044 scan.slopeT[i][1] = (c->Tex[i] - b->Tex[i]) * scan.invDeltaY[2];
1045 }
1046
1047 // apply top-left fill convention, top part
1048 yStart = core::ceil32( b->Pos.y );
1049 yEnd = core::ceil32( c->Pos.y ) - 1;
1050
1051
1052 subPixel = ( (f32) yStart ) - b->Pos.y;
1053
1054 // correct to pixel center
1055 scan.x[0] += scan.slopeX[0] * subPixel;
1056 scan.x[1] += scan.slopeX[1] * subPixel;
1057
1058 scan.w[0] += scan.slopeW[0] * subPixel;
1059 scan.w[1] += scan.slopeW[1] * subPixel;
1060
1061 for ( i = 0; i != ShaderParam.ColorUnits; ++i )
1062 {
1063 scan.c[i][0] += scan.slopeC[i][0] * subPixel;
1064 scan.c[i][1] += scan.slopeC[i][1] * subPixel;
1065 }
1066
1067 for ( i = 0; i != ShaderParam.TextureUnits; ++i )
1068 {
1069 scan.t[i][0] += scan.slopeT[i][0] * subPixel;
1070 scan.t[i][1] += scan.slopeT[i][1] * subPixel;
1071 }
1072
1073 // rasterize the edge scanlines
1074 for( line.y = yStart; line.y <= yEnd; ++line.y)
1075 {
1076 line.x[scan.left] = scan.x[0];
1077 line.w[scan.left] = scan.w[0];
1078
1079 line.x[scan.right] = scan.x[1];
1080 line.w[scan.right] = scan.w[1];
1081
1082#ifdef SOFTWARE_DRIVER_2_USE_VERTEX_COLOR
1083 for ( i = 0; i != ShaderParam.ColorUnits; ++i )
1084 {
1085 line.c[i][scan.left] = scan.c[i][0];
1086 line.c[i][scan.right] = scan.c[i][1];
1087 }
1088#endif
1089 for ( i = 0; i != ShaderParam.TextureUnits; ++i )
1090 {
1091 line.t[i][scan.left] = scan.t[i][0];
1092 line.t[i][scan.right] = scan.t[i][1];
1093 }
1094
1095 // render a scanline
1096 scanline ();
1097
1098 scan.x[0] += scan.slopeX[0];
1099 scan.x[1] += scan.slopeX[1];
1100
1101 scan.w[0] += scan.slopeW[0];
1102 scan.w[1] += scan.slopeW[1];
1103
1104 for ( i = 0; i != ShaderParam.TextureUnits; ++i )
1105 {
1106 scan.c[i][0] += scan.slopeC[i][0];
1107 scan.c[i][1] += scan.slopeC[i][1];
1108 }
1109
1110 for ( i = 0; i != ShaderParam.TextureUnits; ++i )
1111 {
1112 scan.t[i][0] += scan.slopeT[i][0];
1113 scan.t[i][1] += scan.slopeT[i][1];
1114 }
1115 }
1116 }
1117}
1118
1119
1120} // end namespace video
1121} // end namespace irr
1122
1123
1124namespace irr
1125{
1126namespace video
1127{
1128
1129
1130
1131//! creates a flat triangle renderer
1132IBurningShader* createTriangleRendererReference(CBurningVideoDriver* driver)
1133{
1134 return new CBurningShader_Raster_Reference(driver);
1135}
1136
1137
1138} // end namespace video
1139} // end namespace irr
1140
1141#endif // _IRR_COMPILE_WITH_BURNINGSVIDEO_
1142
1143
generated by cgit v1.1 at 2024-06-27 09:38:29 +0000