forked from GameTechDev/CloudsGPUPro6
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathCloudySky.cpp
2308 lines (1963 loc) · 99.9 KB
/
CloudySky.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/////////////////////////////////////////////////////////////////////////////////////////////
// Copyright 2017 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or imlied.
// See the License for the specific language governing permissions and
// limitations under the License.
/////////////////////////////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "CloudySky.h"
#include "LightSctrPostProcess.h"
#include <iomanip>
#include "CPUTBufferDX11.h"
#include <Commdlg.h>
#include "CloudsController.h"
// important to use the right CPUT namespace
void UpdateConstantBuffer(ID3D11DeviceContext *pDeviceCtx, ID3D11Buffer *pCB, const void *pData, size_t DataSize);
class CParallelLightCamera : public CPUTCamera
{
public:
virtual void Update( float deltaSeconds=0.0f ) {
mView = inverse(*GetWorldMatrix());
};
};
// Constructor
//-----------------------------------------------------------------------------
CCloudySkySample::CCloudySkySample() :
mpCameraController(NULL),
m_pLightController(NULL),
m_uiShadowMapResolution( 1024 ),
m_uiCloudDensityMapResolution(512),
m_fCascadePartitioningFactor(0.95f),
m_bEnableLightScattering(true),
m_bAnimateSun(false),
m_pOffscreenRenderTarget(NULL),
m_pOffscreenDepth(NULL),
m_fScatteringScale(0.5f),
m_f4LightColor(1.f, 1.f, 1.f, 1.f),
m_iGUIMode(1),
m_uiBackBufferWidth(0),
m_uiBackBufferHeight(0),
m_uiSelectedPanelInd(0),
m_CameraPos(0,0,0),
m_fCloudTime(0.f),
m_fCloudTimeScale(0.2f)
{
m_TerrainRenderParams.m_bEnableClouds = m_PPAttribs.m_bEnableClouds;
m_pLightSctrPP = new CLightSctrPostProcess;
m_pCloudsController = new CCloudsController;
}
// Destructor
//-----------------------------------------------------------------------------
CCloudySkySample::~CCloudySkySample()
{
Destroy();
SAFE_DELETE( m_pLightSctrPP );
SAFE_DELETE( m_pCloudsController );
}
void CCloudySkySample::Destroy()
{
m_EarthHemisphere.OnD3D11DestroyDevice();
ReleaseShadowMap();
ReleaseCloudDensityMap();
ReleaseTmpBackBuffAndDepthBuff();
m_pCloudsController->OnDestroyDevice();
m_pLightSctrPP->OnDestroyDevice();
SAFE_RELEASE(m_pDirectionalLightCamera);
SAFE_RELEASE(m_pDirLightOrienationCamera);
SAFE_RELEASE(mpCamera);
SAFE_DELETE( mpCameraController);
SAFE_DELETE( m_pLightController);
m_pcbLightAttribs.Release();
m_pcbCameraAttribs.Release();
}
void GetRaySphereIntersection(D3DXVECTOR3 f3RayOrigin,
const D3DXVECTOR3 &f3RayDirection,
const D3DXVECTOR3 &f3SphereCenter,
float fSphereRadius,
D3DXVECTOR2 &f2Intersections)
{
// http://wiki.cgsociety.org/index.php/Ray_Sphere_Intersection
f3RayOrigin -= f3SphereCenter;
float A = D3DXVec3Dot(&f3RayDirection, &f3RayDirection);
float B = 2 * D3DXVec3Dot(&f3RayOrigin, &f3RayDirection);
float C = D3DXVec3Dot(&f3RayOrigin, &f3RayOrigin) - fSphereRadius*fSphereRadius;
float D = B*B - 4*A*C;
// If discriminant is negative, there are no real roots hence the ray misses the
// sphere
if( D<0 )
{
f2Intersections = D3DXVECTOR2(-1,-1);
}
else
{
D = sqrt(D);
f2Intersections = D3DXVECTOR2(-B - D, -B + D) / (2*A); // A must be positive here!!
}
}
extern float3 gLightDir;
void CCloudySkySample::RenderShadowMap(ID3D11DeviceContext *pContext,
SLightAttribs &LightAttribs,
float fTime)
{
SShadowMapAttribs& ShadowMapAttribs = LightAttribs.ShadowAttribs;
D3DXVECTOR3 v3DirOnLight = (D3DXVECTOR3&)LightAttribs.f4DirOnLight;
D3DXVECTOR3 v3LightDirection = -v3DirOnLight;
gLightDir.x = v3LightDirection.x;
gLightDir.y = v3LightDirection.y;
gLightDir.z = v3LightDirection.z;
// Declare working vectors
D3DXVECTOR3 vLightSpaceX, vLightSpaceY, vLightSpaceZ;
// Compute an inverse vector for the direction on the sun
vLightSpaceZ = v3LightDirection;
// And a vector for X light space
vLightSpaceX = D3DXVECTOR3( 1.0f, 0.0, 0.0 );
// Compute the cross products
D3DXVec3Cross(&vLightSpaceY, &vLightSpaceX, &vLightSpaceZ);
D3DXVec3Cross(&vLightSpaceX, &vLightSpaceZ, &vLightSpaceY);
// And then normalize them
D3DXVec3Normalize( &vLightSpaceX, &vLightSpaceX );
D3DXVec3Normalize( &vLightSpaceY, &vLightSpaceY );
D3DXVec3Normalize( &vLightSpaceZ, &vLightSpaceZ );
// Declare a world to light space transformation matrix
// Initialize to an identity matrix
D3DXMATRIX WorldToLightViewSpaceMatr;
D3DXMatrixIdentity( &WorldToLightViewSpaceMatr );
// Adjust elements to the light space
WorldToLightViewSpaceMatr._11 = vLightSpaceX.x;
WorldToLightViewSpaceMatr._21 = vLightSpaceX.y;
WorldToLightViewSpaceMatr._31 = vLightSpaceX.z;
WorldToLightViewSpaceMatr._12 = vLightSpaceY.x;
WorldToLightViewSpaceMatr._22 = vLightSpaceY.y;
WorldToLightViewSpaceMatr._32 = vLightSpaceY.z;
WorldToLightViewSpaceMatr._13 = vLightSpaceZ.x;
WorldToLightViewSpaceMatr._23 = vLightSpaceZ.y;
WorldToLightViewSpaceMatr._33 = vLightSpaceZ.z;
D3DXMatrixTranspose(&ShadowMapAttribs.mWorldToLightViewT, &WorldToLightViewSpaceMatr);
D3DXVECTOR3 f3CameraPosInLightSpace;
D3DXVec3TransformCoord(&f3CameraPosInLightSpace, &m_CameraPos, &WorldToLightViewSpaceMatr);
D3DXMATRIX mProj = (D3DXMATRIX &)*mpCamera->GetProjectionMatrix();
float fMainCamNearPlane = -mProj._43 / mProj._33;
float fMainCamFarPlane = mProj._33 / (mProj._33-1) * fMainCamNearPlane;
float fMaxLightShaftsDist = 3e+5f;
LightAttribs.fMaxShadowCamSpaceZ = fMaxLightShaftsDist;
fMainCamNearPlane = min(fMainCamNearPlane, fMaxLightShaftsDist);
bool bCascadesValid = ( fMainCamNearPlane > fMainCamFarPlane );//Depth buffer is complimentary, so near should be > far
for(int i=0; i < MAX_CASCADES; ++i)
ShadowMapAttribs.fCascadeCamSpaceZEnd[i] = +FLT_MAX;
CComPtr<ID3D11RenderTargetView> pOrigRTV;
CComPtr<ID3D11DepthStencilView> pOrigDSV;
D3D11_VIEWPORT OrigViewport;
pContext->OMGetRenderTargets(1, &pOrigRTV, &pOrigDSV);
UINT uiNumVP = 1;
pContext->RSGetViewports(&uiNumVP, &OrigViewport);
// Render cascades
for(int iCascade = 0; iCascade < m_TerrainRenderParams.m_iNumShadowCascades; ++iCascade)
{
auto &CurrCascade = ShadowMapAttribs.Cascades[iCascade];
D3DXMATRIX CascadeFrustumProjMatrix;
float &fCascadeNearZ = ShadowMapAttribs.fCascadeCamSpaceZEnd[iCascade];
float fCascadeFarZ = (iCascade == 0) ? fMainCamFarPlane : ShadowMapAttribs.fCascadeCamSpaceZEnd[iCascade-1];
if (iCascade < m_TerrainRenderParams.m_iNumShadowCascades-1)
{
float ratio = fMainCamNearPlane / fMainCamFarPlane;
float power = (float)(iCascade+1) / (float)m_TerrainRenderParams.m_iNumShadowCascades;
float logZ = fMainCamFarPlane * pow(ratio, power);
float range = fMainCamNearPlane - fMainCamFarPlane;
float uniformZ = fMainCamFarPlane + range * power;
fCascadeNearZ = m_fCascadePartitioningFactor * (logZ - uniformZ) + uniformZ;
}
else
{
fCascadeNearZ = fMainCamNearPlane;
}
CurrCascade.f4StartEndZ.x = (iCascade == m_PPAttribs.m_iFirstCascade) ? 0 : min(fCascadeFarZ, fMaxLightShaftsDist);
CurrCascade.f4StartEndZ.y = min(fCascadeNearZ, fMaxLightShaftsDist);
CascadeFrustumProjMatrix = mProj;
CascadeFrustumProjMatrix._33 = fCascadeFarZ / (fCascadeFarZ - fCascadeNearZ);
CascadeFrustumProjMatrix._43 = -fCascadeNearZ * CascadeFrustumProjMatrix._33;
D3DXMATRIX CascadeFrustumViewProjMatr = m_CameraViewMatrix * CascadeFrustumProjMatrix;
D3DXMATRIX CascadeFrustumProjSpaceToWorldSpace;
D3DXMatrixInverse(&CascadeFrustumProjSpaceToWorldSpace, nullptr, &CascadeFrustumViewProjMatr);
D3DXMATRIX CascadeFrustumProjSpaceToLightSpace = CascadeFrustumProjSpaceToWorldSpace * WorldToLightViewSpaceMatr;
// Set reference minimums and maximums for each coordinate
D3DXVECTOR3 f3MinXYZ(f3CameraPosInLightSpace), f3MaxXYZ(f3CameraPosInLightSpace);
// First cascade used for ray marching must contain camera within it
if( iCascade != m_PPAttribs.m_iFirstCascade )
{
f3MinXYZ = D3DXVECTOR3(+FLT_MAX, +FLT_MAX, +FLT_MAX);
f3MaxXYZ = D3DXVECTOR3(-FLT_MAX, -FLT_MAX, -FLT_MAX);
}
for(int iClipPlaneCorner=0; iClipPlaneCorner < 8; ++iClipPlaneCorner)
{
D3DXVECTOR3 f3PlaneCornerProjSpace( (iClipPlaneCorner & 0x01) ? +1.f : - 1.f,
(iClipPlaneCorner & 0x02) ? +1.f : - 1.f,
// Since we use complimentary depth buffering,
// far plane has depth 0
(iClipPlaneCorner & 0x04) ? 1.f : 0.f);
D3DXVECTOR3 f3PlaneCornerLightSpace;
D3DXVec3TransformCoord(&f3PlaneCornerLightSpace, &f3PlaneCornerProjSpace, &CascadeFrustumProjSpaceToLightSpace);
D3DXVec3Minimize(&f3MinXYZ, &f3MinXYZ, &f3PlaneCornerLightSpace);
D3DXVec3Maximize(&f3MaxXYZ, &f3MaxXYZ, &f3PlaneCornerLightSpace);
}
// Extend cascade to enable correct filtering
float fShadowMapDim = (float)m_uiShadowMapResolution;
const float fFilterSizeInTexels = 1.f;
const float fPaddingInUVSpace = (fFilterSizeInTexels + 1.0f) / fShadowMapDim;
CurrCascade.f4LightProjSpaceFilterRadius.x = 2.f * fPaddingInUVSpace;
CurrCascade.f4LightProjSpaceFilterRadius.y = 2.f * fPaddingInUVSpace;
CurrCascade.f4LightProjSpaceFilterRadius.z = 0.1f;
CurrCascade.f4LightProjSpaceFilterRadius.w = 0.4f;
D3DXVECTOR3 f3Delta = (f3MaxXYZ - f3MinXYZ);
f3Delta.x *= 1 / (1 - CurrCascade.f4LightProjSpaceFilterRadius.x);
f3Delta.y *= 1 / (1 - CurrCascade.f4LightProjSpaceFilterRadius.y);
f3Delta.z *= 1 / (1 - (CurrCascade.f4LightProjSpaceFilterRadius.z + CurrCascade.f4LightProjSpaceFilterRadius.w));
f3MaxXYZ += f3Delta;
f3MinXYZ -= f3Delta;
// Align cascade
if( m_PPAttribs.m_bEnableClouds )
fShadowMapDim = min(fShadowMapDim, (float)m_uiCloudDensityMapResolution);
float fCascadeXExt = (f3MaxXYZ.x - f3MinXYZ.x) * (1 + 1.f/fShadowMapDim);
float fCascadeYExt = (f3MaxXYZ.y - f3MinXYZ.y) * (1 + 1.f/fShadowMapDim);
// Compute rounding step by aligning 1/8 of the cascade extent to the closest power of two
const float fExtStep = 2.f;
float fXRounding = pow( fExtStep, ceil( log(fCascadeXExt/8.f)/log(fExtStep) ) );
float fYRounding = pow( fExtStep, ceil( log(fCascadeYExt/8.f)/log(fExtStep) ) );
// Round cascade extents
fCascadeXExt = ceil(fCascadeXExt / fXRounding) * fXRounding;
fCascadeYExt = ceil(fCascadeYExt / fYRounding) * fYRounding;
// Align cascade center with the shadow map texels to alleviate temporal aliasing
float fCascadeXCenter = (f3MaxXYZ.x + f3MinXYZ.x)/2.f;
float fCascadeYCenter = (f3MaxXYZ.y + f3MinXYZ.y)/2.f;
float fTexelXSize = fCascadeXExt / fShadowMapDim;
float fTexelYSize = fCascadeYExt / fShadowMapDim;
fCascadeXCenter = floor(fCascadeXCenter/fTexelXSize) * fTexelXSize;
fCascadeYCenter = floor(fCascadeYCenter/fTexelYSize) * fTexelYSize;
// Compute new cascade min/max xy coords
f3MaxXYZ.x = fCascadeXCenter + fCascadeXExt/2.f;
f3MinXYZ.x = fCascadeXCenter - fCascadeXExt/2.f;
f3MaxXYZ.y = fCascadeYCenter + fCascadeYExt/2.f;
f3MinXYZ.y = fCascadeYCenter - fCascadeYExt/2.f;
CurrCascade.f4LightSpaceScale.x = 2.f / (f3MaxXYZ.x - f3MinXYZ.x);
CurrCascade.f4LightSpaceScale.y = 2.f / (f3MaxXYZ.y - f3MinXYZ.y);
CurrCascade.f4LightSpaceScale.z = -1.f / (f3MaxXYZ.z - f3MinXYZ.z);
// Apply bias to shift the extent to [-1,1]x[-1,1]x[1,0]
CurrCascade.f4LightSpaceScaledBias.x = -f3MinXYZ.x * CurrCascade.f4LightSpaceScale.x - 1.f;
CurrCascade.f4LightSpaceScaledBias.y = -f3MinXYZ.y * CurrCascade.f4LightSpaceScale.y - 1.f;
CurrCascade.f4LightSpaceScaledBias.z = -f3MaxXYZ.z * CurrCascade.f4LightSpaceScale.z + 0.f;
D3DXMATRIX ScaleMatrix;
D3DXMatrixScaling(&ScaleMatrix, CurrCascade.f4LightSpaceScale.x, CurrCascade.f4LightSpaceScale.y, CurrCascade.f4LightSpaceScale.z);
D3DXMATRIX ScaledBiasMatrix;
D3DXMatrixTranslation(&ScaledBiasMatrix, CurrCascade.f4LightSpaceScaledBias.x, CurrCascade.f4LightSpaceScaledBias.y, CurrCascade.f4LightSpaceScaledBias.z);
// Note: bias is applied after scaling!
D3DXMATRIX CascadeProjMatr = ScaleMatrix * ScaledBiasMatrix;
//D3DXMatrixOrthoOffCenterLH( &m_LightOrthoMatrix, MinX, MaxX, MinY, MaxY, MaxZ, MinZ);
// Adjust the world to light space transformation matrix
D3DXMATRIX WorldToLightProjSpaceMatr = WorldToLightViewSpaceMatr * CascadeProjMatr;
D3DXMATRIX ProjToUVScale, ProjToUVBias;
D3DXMatrixScaling( &ProjToUVScale, 0.5f, -0.5f, 1.f);
D3DXMatrixTranslation( &ProjToUVBias, 0.5f, 0.5f, 0.f);
D3DXMATRIX WorldToShadowMapUVDepthMatr = WorldToLightProjSpaceMatr * ProjToUVScale * ProjToUVBias;
D3DXMatrixTranspose( &ShadowMapAttribs.mWorldToShadowMapUVDepthT[iCascade], &WorldToShadowMapUVDepthMatr );
D3D11_VIEWPORT NewViewPort;
NewViewPort.TopLeftX = 0;
NewViewPort.TopLeftY = 0;
NewViewPort.Width = static_cast<float>( m_uiShadowMapResolution );
NewViewPort.Height = static_cast<float>( m_uiShadowMapResolution );
NewViewPort.MinDepth = 0;
NewViewPort.MaxDepth = 1;
// Set the viewport
pContext->RSSetViewports(1, &NewViewPort);
pContext->OMSetRenderTargets(0, nullptr, m_pShadowMapDSVs[iCascade]);
pContext->ClearDepthStencilView(m_pShadowMapDSVs[iCascade], D3D11_CLEAR_DEPTH, 0.f, 0);
// Render terrain to shadow map
SCameraAttribs CameraAttribs;
D3DXMatrixTranspose( &CameraAttribs.WorldViewProjT, &WorldToLightProjSpaceMatr);
D3DXMATRIX mViewProjInverseMatr;
D3DXMatrixInverse(&mViewProjInverseMatr, NULL, &WorldToLightProjSpaceMatr);
D3DXMatrixTranspose( &CameraAttribs.mViewProjInvT, &mViewProjInverseMatr);
D3DXMatrixTranspose( &CameraAttribs.mProjT, &CascadeProjMatr);
ExtractViewFrustumPlanesFromMatrix(WorldToLightProjSpaceMatr, (SViewFrustum&)CameraAttribs.f4ViewFrustumPlanes);
CameraAttribs.f3ViewDir = v3LightDirection;
UpdateConstantBuffer(mpContext, m_pcbCameraAttribs, &CameraAttribs, sizeof(CameraAttribs));
if( bCascadesValid )
{
m_EarthHemisphere.Render(mpContext, WorldToLightProjSpaceMatr, m_pcbCameraAttribs, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, true);
}
m_PPAttribs.m_fCloudAltitiude = m_pCloudsController->GetCloudAttribs().fCloudAltitude;
if( m_PPAttribs.m_bEnableClouds )
{
NewViewPort.Width = static_cast<float>( m_uiCloudDensityMapResolution );
NewViewPort.Height = static_cast<float>( m_uiCloudDensityMapResolution );
// Set the viewport
pContext->RSSetViewports(1, &NewViewPort);
ID3D11RenderTargetView *pRTVs[] = {m_pLiSpCloudTransparencyRTVs[iCascade], m_pLiSpCloudMinMaxDepthRTVs[iCascade]};
pContext->OMSetRenderTargets(_countof(pRTVs), pRTVs, nullptr);
ID3D11Buffer *pcMediaScatteringParams = m_pLightSctrPP->GetMediaAttribsCB();
if( bCascadesValid )
{
CCloudsController::SRenderAttribs RenderAttribs;
RenderAttribs.pDevice = mpD3dDevice;
RenderAttribs.pDeviceContext = mpContext;
RenderAttribs.ViewProjMatr = WorldToLightProjSpaceMatr;
RenderAttribs.pcbCameraAttribs = m_pcbCameraAttribs;
RenderAttribs.pcMediaScatteringParams = pcMediaScatteringParams;
//RenderAttribs. = m_pShadowMapSRV;
RenderAttribs.iCascadeIndex = iCascade;
RenderAttribs.fCurrTime = m_fCloudTime;
RenderAttribs.uiLiSpCloudDensityDim = m_uiCloudDensityMapResolution;
m_pCloudsController->RenderLightSpaceDensity( RenderAttribs );
}
}
}
pContext->OMSetRenderTargets(1, &pOrigRTV.p, pOrigDSV);
pContext->RSSetViewports(1, &OrigViewport);
if( m_PPAttribs.m_bEnableClouds )
{
pContext->GenerateMips(m_pLiSpCloudTransparencySRV);
}
}
void ComputeApproximateNearFarPlaneDist(const D3DXVECTOR3 &CameraPos,
const D3DXMATRIX &ViewMatr,
const D3DXMATRIX &ProjMatr,
const D3DXVECTOR3 &EarthCenter,
float fEarthRadius,
float fMinRadius,
float fMaxRadius,
float &fNearPlaneZ,
float &fFarPlaneZ)
{
D3DXMATRIX ViewProjMatr = ViewMatr * ProjMatr;
D3DXMATRIX ViewProjInv;
D3DXMatrixInverse(&ViewProjInv, nullptr, &ViewProjMatr);
// Compute maximum view distance for the current camera altitude
D3DXVECTOR3 f3CameraGlobalPos = CameraPos - EarthCenter;
float fCameraElevationSqr = D3DXVec3Dot(&f3CameraGlobalPos, &f3CameraGlobalPos);
float fMaxViewDistance = (float)(sqrt( (double)fCameraElevationSqr - (double)fEarthRadius*fEarthRadius ) +
sqrt( (double)fMaxRadius*fMaxRadius - (double)fEarthRadius*fEarthRadius ));
float fCameraElev = sqrt(fCameraElevationSqr);
fNearPlaneZ = 50.f;
if( fCameraElev > fMaxRadius )
{
// Adjust near clipping plane
fNearPlaneZ = (fCameraElev - fMaxRadius) / sqrt( 1 + 1.f/(ProjMatr._11*ProjMatr._11) + 1.f/(ProjMatr._22*ProjMatr._22) );
}
fNearPlaneZ = max(fNearPlaneZ, 50);
fFarPlaneZ = 1000;
const int iNumTestDirections = 5;
for(int i=0; i<iNumTestDirections; ++i)
for(int j=0; j<iNumTestDirections; ++j)
{
D3DXVECTOR3 PosPS, PosWS, DirFromCamera;
PosPS.x = (float)i / (float)(iNumTestDirections-1) * 2.f - 1.f;
PosPS.y = (float)j / (float)(iNumTestDirections-1) * 2.f - 1.f;
PosPS.z = 0; // Far plane is at 0 in complimentary depth buffer
D3DXVec3TransformCoord(&PosWS, &PosPS, &ViewProjInv);
DirFromCamera = PosWS - CameraPos;
D3DXVec3Normalize(&DirFromCamera, &DirFromCamera);
D3DXVECTOR2 IsecsWithBottomBoundSphere;
GetRaySphereIntersection(CameraPos, DirFromCamera, EarthCenter, fMinRadius, IsecsWithBottomBoundSphere);
float fNearIsecWithBottomSphere = IsecsWithBottomBoundSphere.x > 0 ? IsecsWithBottomBoundSphere.x : IsecsWithBottomBoundSphere.y;
if( fNearIsecWithBottomSphere > 0 )
{
// The ray hits the Earth. Use hit point to compute camera space Z
D3DXVECTOR3 HitPointWS = CameraPos + DirFromCamera*fNearIsecWithBottomSphere;
D3DXVECTOR3 HitPointCamSpace;
D3DXVec3TransformCoord(&HitPointCamSpace, &HitPointWS, &ViewMatr);
fFarPlaneZ = max(fFarPlaneZ, HitPointCamSpace.z);
}
else
{
// The ray misses the Earth. In that case the whole earth could be seen
fFarPlaneZ = fMaxViewDistance;
}
}
}
// DirectX 11 render callback
//-----------------------------------------------------------------------------
void CCloudySkySample::Render(double deltaSeconds)
{
const float srgbClearColor[] = { 0.0993f, 0.0993f, 0.0993f, 1.0f }; //sRGB - red,green,blue,alpha pow(0.350, 2.2)
const float rgbClearColor[] = { 0.350f, 0.350f, 0.350f, 1.0f }; //RGB - red,green,blue,alpha
float fTime = (float)mpTimer->GetTotalTime();
// Clear back buffer
const float clearColor[] = { 0.0993f, 0.0993f, 0.0993f, 1.0f };
mpContext->ClearRenderTargetView( mpBackBufferRTV, clearColor );
mpContext->ClearDepthStencilView( mpDepthStencilView, D3D11_CLEAR_DEPTH | D3D11_CLEAR_STENCIL, 0.0f, 0);
CPUTRenderParametersDX drawParams(mpContext);
D3DXMATRIX mProj = (D3DXMATRIX &)*mpCamera->GetProjectionMatrix();
D3DXMATRIX mView = m_CameraViewMatrix;//(D3DXMATRIX &)*mpCamera->GetViewMatrix();
D3DXMATRIX mViewProj = mView * mProj;
// Get the camera position
D3DXMATRIX CameraWorld;
D3DXMatrixInverse(&CameraWorld, NULL, &mView);
D3DXVECTOR3 CameraPos = *(D3DXVECTOR3*)&CameraWorld._41;
D3DXMATRIX mViewProjInverseMatr;
D3DXMatrixInverse(&mViewProjInverseMatr, NULL, &mViewProj);
SCameraAttribs CameraAttribs;
CameraAttribs.f4CameraPos = D3DXVECTOR4(CameraPos.x, CameraPos.y, CameraPos.z, 0); ///< Camera world position
CameraAttribs.fNearPlaneZ = mpCamera->GetNearPlaneDistance();
CameraAttribs.fFarPlaneZ = mpCamera->GetFarPlaneDistance() * 0.999999f;
D3DXMatrixTranspose( &CameraAttribs.WorldViewProjT, &mViewProj);
D3DXMatrixTranspose( &CameraAttribs.mViewT, &mView);
D3DXMatrixTranspose( &CameraAttribs.mProjT, &mProj);
D3DXMatrixTranspose( &CameraAttribs.mViewProjInvT, &mViewProjInverseMatr);
ExtractViewFrustumPlanesFromMatrix(mViewProj, (SViewFrustum&)CameraAttribs.f4ViewFrustumPlanes);
UpdateConstantBuffer(mpContext, m_pcbCameraAttribs, &CameraAttribs, sizeof(CameraAttribs));
D3DXVECTOR3 v3LightDir = -(D3DXVECTOR3&)m_pDirLightOrienationCamera->GetLook();
D3DXVECTOR3 v3DirOnLight = -v3LightDir;
ID3D11Buffer *pcMediaScatteringParams = m_pLightSctrPP->GetMediaAttribsCB();
if( m_PPAttribs.m_bEnableClouds )
{
m_CloudAttribs.uiNumCascades = m_TerrainRenderParams.m_iNumShadowCascades;
m_pCloudsController->Update(m_CloudAttribs, m_CameraPos, v3LightDir, mpD3dDevice, mpContext, m_pcbCameraAttribs, m_pcbLightAttribs, pcMediaScatteringParams);
}
SLightAttribs LightAttribs;
LightAttribs.f4DirOnLight = D3DXVECTOR4( v3DirOnLight.x, v3DirOnLight.y, v3DirOnLight.z, 0 );
D3DXVECTOR4 f4ExtraterrestrialSunColor = D3DXVECTOR4(10,10,10,10);
LightAttribs.f4ExtraterrestrialSunColor = f4ExtraterrestrialSunColor*m_fScatteringScale;
mLightColor = (float3&)f4ExtraterrestrialSunColor;
CPUTGuiControllerDX11* pGUI = CPUTGetGuiController();
UINT uiSelectedItem;
((CPUTDropdown*)pGUI->GetControl(ID_FIRST_CASCADE_TO_RAY_MARCH_DROPDOWN))->GetSelectedItem(uiSelectedItem);
m_PPAttribs.m_iFirstCascade = min((int)uiSelectedItem, m_TerrainRenderParams.m_iNumShadowCascades - 1);
m_PPAttribs.m_fFirstCascade = (float)m_PPAttribs.m_iFirstCascade;
RenderShadowMap(mpContext, LightAttribs, fTime);
LightAttribs.ShadowAttribs.bVisualizeCascades = ((CPUTCheckbox*)pGUI->GetControl(ID_SHOW_CASCADES_CHECK))->GetCheckboxState() == CPUT_CHECKBOX_CHECKED;
// Calculate location of the sun on the screen
D3DXVECTOR4 &f4LightPosPS = LightAttribs.f4LightScreenPos;
D3DXVec4Transform(&f4LightPosPS, &LightAttribs.f4DirOnLight, &mViewProj);
f4LightPosPS.x /= f4LightPosPS.w;
f4LightPosPS.y /= f4LightPosPS.w;
f4LightPosPS.z /= f4LightPosPS.w;
float fDistToLightOnScreen = D3DXVec2Length( (D3DXVECTOR2*)&f4LightPosPS );
float fMaxDist = 100;
if( fDistToLightOnScreen > fMaxDist )
(D3DXVECTOR2&)f4LightPosPS *= fMaxDist/fDistToLightOnScreen;
// Note that in fact the outermost visible screen pixels do not lie exactly on the boundary (+1 or -1), but are biased by
// 0.5 screen pixel size inwards. Using these adjusted boundaries improves precision and results in
// smaller number of pixels which require inscattering correction
LightAttribs.bIsLightOnScreen = abs(f4LightPosPS.x) <= 1.f - 1.f/(float)m_uiBackBufferWidth &&
abs(f4LightPosPS.y) <= 1.f - 1.f/(float)m_uiBackBufferHeight;
// Light attribs CB must be updated after RenderShadowMap() has been called to
// properly init shadow map data
UpdateConstantBuffer(mpContext, m_pcbLightAttribs, &LightAttribs, sizeof(LightAttribs));
// Camera attribs CB must be updated after RenderShadowMap() has been called, because
// the latter also touches the buffer
UpdateConstantBuffer(mpContext, m_pcbCameraAttribs, &CameraAttribs, sizeof(CameraAttribs));
if( m_bEnableLightScattering || m_PPAttribs.m_bEnableClouds )
{
float pClearColor[4] = {0,0,0,0};
m_pOffscreenRenderTarget->SetRenderTarget( drawParams, m_pOffscreenDepth, 0, pClearColor, true, 0.f );
}
else
{
mpContext->ClearRenderTargetView( mpBackBufferRTV, srgbClearColor );
mpContext->ClearDepthStencilView(mpDepthStencilView, D3D11_CLEAR_DEPTH, 0.0f, 0);
}
// Render terrain
ID3D11ShaderResourceView *pPrecomputedNetDensitySRV = m_pLightSctrPP->GetPrecomputedNetDensitySRV();
ID3D11ShaderResourceView *pAmbientSkyLightSRV = m_pLightSctrPP->GetAmbientSkyLightSRV(mpD3dDevice, mpContext);
// Terrain is rendered with cloud density not been merged with the shadow map
// Cloud transparency is used to create smooth shadows from clouds
m_EarthHemisphere.Render( mpContext, mViewProj, m_pcbCameraAttribs, m_pcbLightAttribs, pcMediaScatteringParams, m_pShadowMapSRV, m_pLiSpCloudTransparencySRV, pPrecomputedNetDensitySRV, pAmbientSkyLightSRV, false);
if( m_PPAttribs.m_bEnableClouds )
{
CCloudsController::SRenderAttribs RenderAttribs;
RenderAttribs.pDevice = mpD3dDevice;
RenderAttribs.pDeviceContext = mpContext;
RenderAttribs.ViewProjMatr = mViewProj;
RenderAttribs.pcbCameraAttribs = m_pcbCameraAttribs;
RenderAttribs.pcbLightAttribs = m_pcbLightAttribs;
RenderAttribs.pcMediaScatteringParams = pcMediaScatteringParams;
RenderAttribs.pPrecomputedNetDensitySRV = pPrecomputedNetDensitySRV;
RenderAttribs.pAmbientSkylightSRV = pAmbientSkyLightSRV;
RenderAttribs.pDepthBufferSRV = m_pOffscreenDepth->GetDepthResourceView();
RenderAttribs.pLiSpCloudTransparencySRV = m_pLiSpCloudTransparencySRV;
RenderAttribs.pLiSpCloudMinMaxDepthSRV = m_pLiSpCloudMinMaxDepthSRV;
RenderAttribs.fCurrTime = m_fCloudTime;
RenderAttribs.f3CameraPos = m_CameraPos;
RenderAttribs.f3ViewDir = (D3DXVECTOR3&)mpCamera->GetLook();
RenderAttribs.m_pCameraAttribs = &CameraAttribs;
RenderAttribs.m_pSMAttribs = &LightAttribs.ShadowAttribs;
m_pCloudsController->RenderScreenSpaceDensityAndColor( RenderAttribs);
}
if( m_bEnableLightScattering )
{
SFrameAttribs FrameAttribs;
FrameAttribs.pd3dDevice = mpD3dDevice;
FrameAttribs.pd3dDeviceContext = mpContext;
FrameAttribs.dElapsedTime = deltaSeconds;
FrameAttribs.pLightAttribs = &LightAttribs;
m_PPAttribs.m_iNumCascades = m_TerrainRenderParams.m_iNumShadowCascades;
m_PPAttribs.m_fNumCascades = (float)m_TerrainRenderParams.m_iNumShadowCascades;
CPUTGuiControllerDX11* pGUI = CPUTGetGuiController();
CPUTSlider* pSlider = static_cast<CPUTSlider*>(pGUI->GetControl(ID_REFINEMENT_THRESHOLD));
pSlider->GetValue(m_PPAttribs.m_fRefinementThreshold);
FrameAttribs.pcbCameraAttribs = m_pcbCameraAttribs;
FrameAttribs.pcbLightAttribs = m_pcbLightAttribs;
m_PPAttribs.m_fMaxShadowMapStep = static_cast<float>(m_uiShadowMapResolution / 4);
m_PPAttribs.m_f2ShadowMapTexelSize = D3DXVECTOR2( 1.f / static_cast<float>(m_uiShadowMapResolution), 1.f / static_cast<float>(m_uiShadowMapResolution) );
m_PPAttribs.m_uiShadowMapResolution = m_uiShadowMapResolution;
// During the ray marching, on each step we move by the texel size in either horz
// or vert direction. So resolution of min/max mipmap should be the same as the
// resolution of the original shadow map
m_PPAttribs.m_uiMinMaxShadowMapResolution = m_uiShadowMapResolution;
m_PPAttribs.m_uiLiSpCldDensResolution = m_uiCloudDensityMapResolution;
m_PPAttribs.m_fLiSpCldDensResolution = static_cast<float>(m_uiCloudDensityMapResolution);
FrameAttribs.ptex2DSrcColorBufferSRV = m_pOffscreenRenderTarget->GetColorResourceView();
FrameAttribs.ptex2DSrcColorBufferRTV = m_pOffscreenRenderTarget->GetActiveRenderTargetView();
FrameAttribs.ptex2DSrcDepthBufferSRV = m_pOffscreenDepth->GetDepthResourceView();
FrameAttribs.ptex2DSrcDepthBufferDSV = m_pOffscreenDepth->GetActiveDepthStencilView();
FrameAttribs.ptex2DShadowMapSRV = m_pShadowMapSRV;
FrameAttribs.pDstRTV = mpBackBufferRTV;
if( m_PPAttribs.m_bEnableClouds )
{
if( m_PPAttribs.m_uiShaftsFromCloudsMode == SHAFTS_FROM_CLOUDS_SHADOW_MAP )
{
// Merge cloud density into the shadow map to create shafts from clouds
CCloudsController::SRenderAttribs RenderAttribs;
RenderAttribs.pDevice = mpD3dDevice;
RenderAttribs.pDeviceContext = mpContext;
RenderAttribs.pLiSpCloudTransparencySRV = m_pLiSpCloudTransparencySRV;
RenderAttribs.pLiSpCloudMinMaxDepthSRV = m_pLiSpCloudMinMaxDepthSRV;
for(int iCscd=m_PPAttribs.m_iFirstCascade; iCscd < m_PPAttribs.m_iNumCascades; ++iCscd)
{
RenderAttribs.pShadowMapDSV = m_pShadowMapDSVs[iCscd];
RenderAttribs.iCascadeIndex = iCscd;
m_pCloudsController->MergeLiSpDensityWithShadowMap(RenderAttribs);
}
}
FrameAttribs.ptex2DScrSpaceCloudColorSRV = m_pCloudsController->GetScrSpaceCloudColor();
FrameAttribs.ptex2DScrSpaceCloudTransparencySRV = m_pCloudsController->GetScrSpaceCloudTransparency();
FrameAttribs.ptex2DScrSpaceCloudMinMaxDistSRV = m_pCloudsController->GetScrSpaceCloudMinMaxDist();
FrameAttribs.ptex2DLiSpCloudTransparencySRV = m_pLiSpCloudTransparencySRV;
FrameAttribs.ptex2DLiSpCloudMinMaxDepthSRV = m_pLiSpCloudMinMaxDepthSRV;
}
else
{
FrameAttribs.ptex2DScrSpaceCloudColorSRV = nullptr;
FrameAttribs.ptex2DScrSpaceCloudTransparencySRV = nullptr;
FrameAttribs.ptex2DScrSpaceCloudMinMaxDistSRV = nullptr;
FrameAttribs.ptex2DLiSpCloudTransparencySRV = nullptr;
FrameAttribs.ptex2DLiSpCloudMinMaxDepthSRV = nullptr;
}
// Then perform the post processing, swapping the inverseworld view projection matrix axes.
m_pLightSctrPP->PerformPostProcessing(FrameAttribs, m_PPAttribs);
}
if( m_PPAttribs.m_bEnableClouds || m_bEnableLightScattering )
m_pOffscreenRenderTarget->RestoreRenderTarget(drawParams);
if( m_bEnableLightScattering || m_PPAttribs.m_bEnableClouds )
mpContext->CopyResource(mpDepthStencilBuffer, m_pOffscreenDepth->GetDepthTexture());
if( m_PPAttribs.m_bEnableClouds && !m_bEnableLightScattering )
{
m_pCloudsController->CombineWithBackBuffer( mpD3dDevice, mpContext, m_pOffscreenDepth->GetDepthResourceView(), m_pOffscreenRenderTarget->GetColorResourceView());
}
// Draw GUI
//
if( m_iGUIMode )
CPUTDrawGUI();
}
// Handle keyboard events
//-----------------------------------------------------------------------------
CPUTEventHandledCode CCloudySkySample::HandleKeyboardEvent(CPUTKey key)
{
CPUTEventHandledCode handled = CPUT_EVENT_UNHANDLED;
CPUTGuiControllerDX11* pGUI = CPUTGetGuiController();
cString filename;
switch(key)
{
case KEY_F1:
++m_iGUIMode;
if( m_iGUIMode>2 )
m_iGUIMode = 0;
if(m_iGUIMode==1)
pGUI->SetActivePanel(CONTROL_PANEL_IDS[m_uiSelectedPanelInd]);
else if(m_iGUIMode==2)
pGUI->SetActivePanel(ID_HELP_TEXT_PANEL);
handled = CPUT_EVENT_HANDLED;
break;
case KEY_ESCAPE:
handled = CPUT_EVENT_HANDLED;
Shutdown();
break;
}
if((handled == CPUT_EVENT_UNHANDLED) && mpCameraController)
{
handled = mpCameraController->HandleKeyboardEvent(key);
}
if((handled == CPUT_EVENT_UNHANDLED) && m_pLightController)
{
handled = m_pLightController->HandleKeyboardEvent(key);
}
return handled;
}
// Handle mouse events
//-----------------------------------------------------------------------------
CPUTEventHandledCode CCloudySkySample::HandleMouseEvent(int x, int y, int wheel, CPUTMouseState state)
{
CPUTEventHandledCode handled = CPUT_EVENT_UNHANDLED;
if( mpCameraController )
{
handled = mpCameraController->HandleMouseEvent(x,y,wheel, state);
}
if( (handled == CPUT_EVENT_UNHANDLED) && m_pLightController )
{
handled = m_pLightController->HandleMouseEvent(x,y,wheel, state);
}
return handled;
}
bool SelectColor(D3DXVECTOR4 &f4Color)
{
// Create an initial color from the current value
COLORREF InitColor = RGB( f4Color.x * 255.f, f4Color.y * 255.f, f4Color.z * 255.f );
COLORREF CustomColors[16];
// Now create a choose color structure with the original color as the default
CHOOSECOLOR ChooseColorInitStruct;
ZeroMemory( &ChooseColorInitStruct, sizeof(ChooseColorInitStruct));
CPUTOSServices::GetOSServices()->GetWindowHandle( &ChooseColorInitStruct.hwndOwner );
ChooseColorInitStruct.lStructSize = sizeof(ChooseColorInitStruct);
ChooseColorInitStruct.rgbResult = InitColor;
ChooseColorInitStruct.Flags = CC_ANYCOLOR | CC_FULLOPEN | CC_RGBINIT;
ChooseColorInitStruct.lpCustColors = CustomColors;
// Display a color selection dialog box and if the user does not cancel, select a color
if( ChooseColor( &ChooseColorInitStruct ) && ChooseColorInitStruct.rgbResult != 0)
{
// Get the new color
COLORREF NewColor = ChooseColorInitStruct.rgbResult;
f4Color.x = (float)(NewColor&0x0FF) / 255.f;
f4Color.y = (float)((NewColor>>8)&0x0FF) / 255.f;
f4Color.z = (float)((NewColor>>16)&0x0FF) / 255.f;
f4Color.w = 0;
return true;
}
return false;
}
// Handle any control callback events
//-----------------------------------------------------------------------------
void CCloudySkySample::HandleCallbackEvent( CPUTEventID Event, CPUTControlID ControlID, CPUTControl* pControl )
{
cString SelectedItem;
CPUTGuiControllerDX11* pGUI = CPUTGetGuiController();
switch(ControlID)
{
case ID_SELECT_PANEL_COMBO:
{
CPUTDropdown* pDropDown = static_cast<CPUTDropdown*>(pControl);
pDropDown->GetSelectedItem(m_uiSelectedPanelInd);
for(int i = 0; i < _countof(m_pSelectPanelDropDowns); ++i)
m_pSelectPanelDropDowns[i]->SetSelectedItem(m_uiSelectedPanelInd+1);
pGUI->SetActivePanel(CONTROL_PANEL_IDS[m_uiSelectedPanelInd]);
break;
}
case ID_FULLSCREEN_BUTTON:
CPUTToggleFullScreenMode();
pGUI->GetControl(ID_RLGH_COLOR_BTN)->SetEnable(!CPUTGetFullscreenState() && m_PPAttribs.m_bUseCustomSctrCoeffs);
pGUI->GetControl(ID_MIE_COLOR_BTN)->SetEnable(!CPUTGetFullscreenState() && m_PPAttribs.m_bUseCustomSctrCoeffs);
break;
case ID_ENABLE_VSYNC:
{
CPUTCheckbox *pCheckBox = static_cast<CPUTCheckbox*>(pControl);
mSyncInterval = pCheckBox->GetCheckboxState() == CPUT_CHECKBOX_CHECKED ? 1 : 0;
break;
}
case ID_ENABLE_LIGHT_SCATTERING:
{
CPUTCheckbox *pCheckBox = static_cast<CPUTCheckbox*>(pControl);
m_bEnableLightScattering = pCheckBox->GetCheckboxState() == CPUT_CHECKBOX_CHECKED;
break;
}
case ID_ANIMATE_SUN:
{
CPUTCheckbox *pCheckBox = static_cast<CPUTCheckbox*>(pControl);
m_bAnimateSun = pCheckBox->GetCheckboxState() == CPUT_CHECKBOX_CHECKED;
break;
}
case ID_ENABLE_LIGHT_SHAFTS:
{
CPUTCheckbox *pCheckBox = static_cast<CPUTCheckbox*>(pControl);
m_PPAttribs.m_bEnableLightShafts = pCheckBox->GetCheckboxState() == CPUT_CHECKBOX_CHECKED;
pGUI->GetControl(ID_NUM_INTEGRATION_STEPS)->SetEnable(!m_PPAttribs.m_bEnableLightShafts && m_PPAttribs.m_uiSingleScatteringMode == SINGLE_SCTR_MODE_INTEGRATION);
break;
}
case ID_ENABLE_CLOUDS:
{
CPUTCheckbox *pCheckBox = static_cast<CPUTCheckbox*>(pControl);
m_PPAttribs.m_bEnableClouds = pCheckBox->GetCheckboxState() == CPUT_CHECKBOX_CHECKED;
m_TerrainRenderParams.m_bEnableClouds = m_PPAttribs.m_bEnableClouds;
m_EarthHemisphere.UpdateParams(m_TerrainRenderParams);
break;
}
case ID_SHAFTS_FROM_CLOUDS_MODE:
{
CPUTDropdown* pDropDown = static_cast<CPUTDropdown*>(pControl);
UINT uiSelectedItem;
pDropDown->GetSelectedItem(uiSelectedItem);
m_PPAttribs.m_uiShaftsFromCloudsMode = uiSelectedItem;
break;
}
case ID_LIGHT_SCTR_TECHNIQUE:
{
CPUTDropdown* pDropDown = static_cast<CPUTDropdown*>(pControl);
UINT uiSelectedItem;
pDropDown->GetSelectedItem(uiSelectedItem);
m_PPAttribs.m_uiLightSctrTechnique = uiSelectedItem;
bool bIsEpipolarSampling = m_PPAttribs.m_uiLightSctrTechnique == LIGHT_SCTR_TECHNIQUE_EPIPOLAR_SAMPLING;
pGUI->GetControl(ID_NUM_EPIPOLAR_SLICES)->SetEnable(bIsEpipolarSampling);
pGUI->GetControl(ID_NUM_SAMPLES_IN_EPIPOLAR_SLICE)->SetEnable(bIsEpipolarSampling);
pGUI->GetControl(ID_INITIAL_SAMPLE_STEP_IN_EPIPOLAR_SLICE)->SetEnable(bIsEpipolarSampling);
pGUI->GetControl(ID_EPIPOLE_SAMPLING_DENSITY_FACTOR)->SetEnable(bIsEpipolarSampling);
pGUI->GetControl(ID_REFINEMENT_THRESHOLD)->SetEnable(bIsEpipolarSampling);
pGUI->GetControl(ID_MIN_MAX_SHADOW_MAP_OPTIMIZATION)->SetEnable(bIsEpipolarSampling);
pGUI->GetControl(ID_OPTIMIZE_SAMPLE_LOCATIONS)->SetEnable(bIsEpipolarSampling);
pGUI->GetControl(ID_SHOW_SAMPLING)->SetEnable(bIsEpipolarSampling);
pGUI->GetControl(ID_CORRECT_SCATTERING_AT_DEPTH_BREAKS)->SetEnable(bIsEpipolarSampling);
pGUI->GetControl(ID_SHOW_DEPTH_BREAKS)->SetEnable(bIsEpipolarSampling);
break;
}
case ID_SHADOW_MAP_RESOLUTION:
{
CPUTDropdown* pDropDown = static_cast<CPUTDropdown*>(pControl);
UINT uiSelectedItem;
pDropDown->GetSelectedItem(uiSelectedItem);
// uiSelectedItem is 1-based
m_uiShadowMapResolution = 512 << uiSelectedItem;
CreateShadowMap(mpD3dDevice);
break;
}
case ID_CLOUD_DENSITY_MAP_RESOLUTION:
{
CPUTDropdown* pDropDown = static_cast<CPUTDropdown*>(pControl);
UINT uiSelectedItem;
pDropDown->GetSelectedItem(uiSelectedItem);
// uiSelectedItem is 1-based
m_uiCloudDensityMapResolution = 128 << uiSelectedItem;
CreateCloudDensityMap(mpD3dDevice);
break;
}
case ID_CLOUD_DOWNSCALE_FACTOR_DROPDOWN:
{
CPUTDropdown* pDropDown = static_cast<CPUTDropdown*>(pControl);
UINT uiSelectedItem;
pDropDown->GetSelectedItem(uiSelectedItem);
m_CloudAttribs.uiDownscaleFactor = 1 << uiSelectedItem;
break;
}
case ID_CLOUDINESS_SLIDER:
{
CPUTSlider* pSlider = static_cast<CPUTSlider*>(pControl);
float fSliderVal;
pSlider->GetValue(fSliderVal);
m_CloudAttribs.fCloudDensityThreshold = 1 - fSliderVal;
break;
}
case ID_CLOUD_ALTITUDE_SLIDER:
{
CPUTSlider* pSlider = static_cast<CPUTSlider*>(pControl);
pSlider->GetValue(m_CloudAttribs.fCloudAltitude);
break;
}
case ID_CLOUD_THICKNESS_SLIDER:
{
CPUTSlider* pSlider = static_cast<CPUTSlider*>(pControl);
pSlider->GetValue(m_CloudAttribs.fCloudThickness);
break;
}
case ID_CLOUD_SPEED_SLIDER:
{
CPUTSlider* pSlider = static_cast<CPUTSlider*>(pControl);
pSlider->GetValue(m_fCloudTimeScale);
break;
}
case ID_PARTICLE_RENDERING_DISTANCE_SLIDER:
{
CPUTSlider* pSlider = static_cast<CPUTSlider*>(pControl);
pSlider->GetValue(m_CloudAttribs.fParticleCutOffDist);
break;
}
case ID_NUM_PARTICLE_RINGS_SLIDER:
{
CPUTSlider* pSlider = static_cast<CPUTSlider*>(pControl);
float fSliderVal;
pSlider->GetValue(fSliderVal);
m_CloudAttribs.uiNumRings = (UINT)fSliderVal;
std::wstringstream NumRingsSS;
NumRingsSS << "Num particle rings: " << m_CloudAttribs.uiNumRings;
pSlider->SetText( NumRingsSS.str().c_str() );
break;
}
case ID_PARTICLE_RING_DIM_SLIDER:
{
CPUTSlider* pSlider = static_cast<CPUTSlider*>(pControl);
float fSliderVal;
pSlider->GetValue(fSliderVal);
m_CloudAttribs.uiInnerRingDim = (UINT)fSliderVal;
std::wstringstream RingDimSS;
RingDimSS << "Ring dimension: " << m_CloudAttribs.uiInnerRingDim + m_CloudAttribs.uiRingExtension*2;
pSlider->SetText( RingDimSS.str().c_str() );
break;
}
case ID_MAX_PARTICLE_LAYERS_SLIDER:
{
CPUTSlider* pSlider = static_cast<CPUTSlider*>(pControl);
float fSliderVal;
pSlider->GetValue(fSliderVal);
m_CloudAttribs.uiMaxLayers = (UINT)fSliderVal;
std::wstringstream MaxLayersSS;
MaxLayersSS << "Max layers: " << m_CloudAttribs.uiMaxLayers;
pSlider->SetText( MaxLayersSS.str().c_str() );
break;
}
case ID_CLOUD_TYPE_DROPDOWN:
{
CPUTDropdown *pDropDown = static_cast<CPUTDropdown*>(pControl);
pDropDown->GetSelectedItem(m_CloudAttribs.uiDensityGenerationMethod);
break;
}
case ID_VOLUMERTIC_BLENDING_CHECK:
{
CPUTCheckbox *pCheckBox = static_cast<CPUTCheckbox*>(pControl);
m_CloudAttribs.bVolumetricBlending = pCheckBox->GetCheckboxState() == CPUT_CHECKBOX_CHECKED;
break;
}
case ID_NUM_EPIPOLAR_SLICES:
{
CPUTSlider* pSlider = static_cast<CPUTSlider*>(pControl);
float fSliderVal;
pSlider->GetValue(fSliderVal);
m_PPAttribs.m_uiNumEpipolarSlices = 1 << (int)fSliderVal;
std::wstringstream NumSlicesSS;
NumSlicesSS << "Epipolar slices: " << m_PPAttribs.m_uiNumEpipolarSlices;
pSlider->SetText( NumSlicesSS.str().c_str() );
break;
}
case ID_NUM_INTEGRATION_STEPS:
{
CPUTSlider* pSlider = static_cast<CPUTSlider*>(pControl);
float fSliderVal;
pSlider->GetValue(fSliderVal);
m_PPAttribs.m_uiInstrIntegralSteps = (int)fSliderVal;
std::wstringstream NumStepsSS;
NumStepsSS << "Num integration steps: " << m_PPAttribs.m_uiInstrIntegralSteps;
pSlider->SetText( NumStepsSS.str().c_str() );
break;
}
case ID_NUM_SAMPLES_IN_EPIPOLAR_SLICE:
{
CPUTSlider* pNumSamplesSlider = static_cast<CPUTSlider*>(pControl);
float fSliderVal;
pNumSamplesSlider->GetValue(fSliderVal);
m_PPAttribs.m_uiMaxSamplesInSlice = 1 << (int)fSliderVal;
std::wstringstream NumSamplesSS;
NumSamplesSS << "Total samples in slice: " << m_PPAttribs.m_uiMaxSamplesInSlice;
pNumSamplesSlider->SetText( NumSamplesSS.str().c_str() );
{