-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathmain.cpp
1145 lines (943 loc) · 44 KB
/
main.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
/*
* SPDX-FileCopyrightText: Copyright (c) 2023-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: Apache-2.0
*
* 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 implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define VMA_IMPLEMENTATION
#include <glm/glm.hpp>
#include <vulkan/vk_enum_string_helper.h>
#include "nvvkhl/appbase_vk.hpp"
#include "backends/imgui_impl_glfw.h"
#include "backends/imgui_impl_vulkan.h"
#include "nvh/primitives.hpp"
#include "nvvk/context_vk.hpp"
#include "nvvk/descriptorsets_vk.hpp"
#include "nvvk/dynamicrendering_vk.hpp"
#include "nvvk/images_vk.hpp"
#include "nvvk/pipeline_vk.hpp"
#include "nvvk/memallocator_vma_vk.hpp"
#include "nvvkhl/gbuffer.hpp"
#include "streamline_wrapper.hpp"
#include "shaders/common.h"
#include "_autogen/post.vert.h"
#include "_autogen/post.frag.h"
#include "_autogen/scene.vert.h"
#include "_autogen/scene.frag.h"
static const int SAMPLE_WIDTH = 1920;
static const int SAMPLE_HEIGHT = 1080;
// Streamline features to enable
static const sl::Feature SL_FEATURES[] = {
sl::kFeatureReflex, // Reflex is required for DLSS Frame Generation
sl::kFeatureDLSS, // DLSS Super Resolution
sl::kFeatureDLSS_G, // DLSS Frame Generation
};
static const VkFormat SAMPLE_DEPTH_FORMAT =
VK_FORMAT_D24_UNORM_S8_UINT; // Streamline only supports VK_FORMAT_D24_UNORM_S8_UINT and VK_FORMAT_D32_SFLOAT currently
static const VkFormat SAMPLE_COLOR_FORMATS[] = {
VK_FORMAT_R16G16B16A16_SFLOAT, // Color
VK_FORMAT_R16G16_SFLOAT // Motion vectors (must be in format VK_FORMAT_R16G16_SFLOAT or VK_FORMAT_R32G32_SFLOAT)
};
#define USE_D3D_CLIP_SPACE 0
class StreamlineSample : public nvvkhl::AppBaseVk
{
public:
StreamlineSample() = default;
~StreamlineSample() override = default;
void create(const nvvkhl::AppBaseVkCreateInfo& info, sl::Result dlssSupported, sl::Result dlssgSupported)
{
AppBaseVk::create(info);
m_dlssSupported = dlssSupported;
m_dlssgSupported = dlssgSupported;
// This sample only operates with a single viewport, so create a handle for viewport index zero
m_viewportHandle = sl::ViewportHandle(0);
// Limit to 180 FPS by default
m_reflexOptions.frameLimitUs = 5555;
// This sample does simulation and rendering in a single thread, so can't use markers to optimize
m_reflexOptions.useMarkersToOptimize = false;
// Set Streamline default options
slDLSSSetOptions(m_viewportHandle, m_dlssOptions);
slDLSSGSetOptions(m_viewportHandle, m_dlssgOptions);
slReflexSetOptions(m_reflexOptions);
m_dset = std::make_unique<nvvk::DescriptorSetContainer>(info.device);
m_alloc = std::make_unique<nvvk::ResourceAllocatorVma>(info.instance, info.device, info.physicalDevice);
const VkSamplerCreateInfo samplerCreateInfo = nvvk::makeSamplerCreateInfo();
m_defaultSampler = m_alloc->acquireSampler(samplerCreateInfo);
createScene();
createPipelines();
createImages(getSize());
}
void destroy() override
{
vkDeviceWaitIdle(m_device);
destroyImages();
destroyPipelines();
destroyScene();
m_alloc->releaseSampler(m_defaultSampler);
m_defaultSampler = VK_NULL_HANDLE;
m_dset.reset();
m_alloc.reset();
AppBaseVk::destroy();
}
void onResize(int width, int height) override
{
createImages({static_cast<uint32_t>(width), static_cast<uint32_t>(height)});
}
void prepareFrame() override
{
AppBaseVk::prepareFrame();
ImGui_ImplGlfw_NewFrame();
ImGui::NewFrame();
drawGui();
ImGui::Render();
m_animationTimePrev = m_animationTime;
m_animationTime += ImGui::GetIO().DeltaTime;
}
void renderFrame(VkCommandBuffer cmd, sl::FrameToken* frame)
{
const VkExtent2D renderSize = m_gBuffers->getSize();
const VkExtent2D outputSize = getSize();
const float aspectRatio = m_gBuffers->getAspectRatio();
const float scalingRatio = static_cast<float>(outputSize.width) / static_cast<float>(renderSize.width);
// Get view information from camera
const glm::mat4 viewMatrix = CameraManip.getMatrix();
const glm::vec2 clipPlanes = CameraManip.getClipPlanes();
glm::mat4 projMatrix =
glm::perspectiveRH_ZO(glm::radians(CameraManip.getFov()), aspectRatio, clipPlanes.x, clipPlanes.y);
#if !USE_D3D_CLIP_SPACE
// Flip the Y axis to convert from D3D to Vulkan:
projMatrix[1][1] *= -1;
#endif
glm::vec3 geye, gcenter, gup;
CameraManip.getLookat(geye, gcenter, gup);
glm::vec3 eye = geye;
glm::vec3 center = gcenter;
glm::vec3 up = gup;
glm::vec3 right = glm::normalize(glm::cross(center - eye, up));
glm::vec3 forward = glm::normalize(center - eye);
// Calculate pixel jitter offset using Halton sequence
glm::vec2 jitterOffset = {};
if(m_dlssOptions.mode != sl::DLSSMode::eOff)
{
const auto halton = [](uint32_t index, uint32_t base) -> float {
float f = 1.0f;
float r = 0.0f;
while(index > 0)
{
f *= static_cast<float>(base);
r += static_cast<float>(index % base) / f;
index /= base;
}
return r;
};
const uint32_t jitterPhases = static_cast<uint32_t>(8 * scalingRatio * scalingRatio + 0.5f);
const uint32_t jitterCurrentIndex = (*frame % jitterPhases) + 1;
jitterOffset.x = halton(jitterCurrentIndex, 2) - 0.5f;
jitterOffset.y = halton(jitterCurrentIndex, 3) - 0.5f;
}
// Update Streamline constants
{
const auto matrixToSL = [](const glm::mat4& m) -> sl::float4x4 {
// Streamline expects row-major matrices
sl::float4x4 res;
res.row[0].x = m[0][0];
res.row[0].y = m[1][0];
res.row[0].z = m[2][0];
res.row[0].w = m[3][0];
res.row[1].x = m[0][1];
res.row[1].y = m[1][1];
res.row[1].z = m[2][1];
res.row[1].w = m[3][1];
res.row[2].x = m[0][2];
res.row[2].y = m[1][2];
res.row[2].z = m[2][2];
res.row[2].w = m[3][2];
res.row[3].x = m[0][3];
res.row[3].y = m[1][3];
res.row[3].z = m[2][3];
res.row[3].w = m[3][3];
return res;
};
sl::Constants constants;
constants.jitterOffset = sl::float2(jitterOffset.x, jitterOffset.y);
constants.mvecScale = sl::float2(1.0f, 1.0f); // getMotion in scene.frag calculates normalized motion vectors already, so do not need to scale
glm::mat4 projMatrixD3D = projMatrix;
glm::mat4 projMatrixPrevD3D = m_projMatrixPrev;
#if USE_D3D_CLIP_SPACE
// getMotion in scene.frag does not flip Y coordinate for D3D clip space, so do it via scaling
constants.mvecScale.y *= -1.0f;
#else
// Streamline expects clip space as defined in Direct3D (X left->right, Y bottom->top, Z front->back)
// But clip space in Vulkan is upside down (X left->right, Y top->bottom, Z front-back), so need to adjust projection matrices accordingly
projMatrixD3D[1][1] *= -1.0f;
projMatrixPrevD3D[1][1] *= -1.0f;
#endif
const glm::mat4 reprojectionMatrix =
projMatrixPrevD3D * (m_viewMatrixPrev * glm::inverse(viewMatrix)) * glm::inverse(projMatrixD3D);
constants.cameraViewToClip = matrixToSL(projMatrix);
constants.clipToCameraView = matrixToSL(glm::inverse(projMatrix));
constants.clipToLensClip = matrixToSL(glm::mat4(1));
constants.clipToPrevClip = matrixToSL(reprojectionMatrix);
constants.prevClipToClip = matrixToSL(glm::inverse(reprojectionMatrix));
constants.cameraPinholeOffset = sl::float2(0.0f, 0.0f);
constants.cameraPos = sl::float3(eye.x, eye.y, eye.z);
constants.cameraUp = sl::float3(up.x, up.y, up.z);
constants.cameraRight = sl::float3(right.x, right.y, right.z);
constants.cameraFwd = sl::float3(forward.x, forward.y, forward.z);
constants.cameraNear = clipPlanes.x;
constants.cameraFar = clipPlanes.y;
constants.cameraFOV = glm::radians(CameraManip.getFov());
constants.cameraAspectRatio = aspectRatio;
constants.depthInverted = (projMatrix[2][2] == 0.0f) ? sl::Boolean::eTrue : sl::Boolean::eFalse;
constants.cameraMotionIncluded = sl::Boolean::eTrue;
constants.motionVectors3D = sl::Boolean::eFalse;
constants.reset = sl::Boolean::eFalse;
constants.motionVectorsJittered = sl::Boolean::eFalse;
if(SL_FAILED(res, slSetConstants(constants, *frame, m_viewportHandle)))
{
LOGE("Streamline: Failed to set constants (%d)\n", res);
return;
}
}
// Update frame info uniform buffer
{
FrameInfo frameInfo;
frameInfo.viewProj = projMatrix * viewMatrix;
frameInfo.viewProjPrev = m_projMatrixPrev * m_viewMatrixPrev;
frameInfo.jitterOffset = jitterOffset * 2.0f / glm::vec2(renderSize.width, renderSize.height);
frameInfo.camPos = eye;
vkCmdUpdateBuffer(cmd, m_frameInfo.buffer, 0, sizeof(frameInfo), &frameInfo);
VkMemoryBarrier barrier = {VK_STRUCTURE_TYPE_MEMORY_BARRIER};
barrier.srcAccessMask = VK_ACCESS_MEMORY_WRITE_BIT;
barrier.dstAccessMask = VK_ACCESS_UNIFORM_READ_BIT;
vkCmdPipelineBarrier(cmd, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_VERTEX_SHADER_BIT | VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT,
0, 1, &barrier, 0, nullptr, 0, nullptr);
}
// Scene rendering
{
std::vector<VkImageView> colorImageViews;
for(uint32_t i = 0; i < std::size(SAMPLE_COLOR_FORMATS); i++)
{
colorImageViews.push_back(m_gBuffers->getColorImageView(i));
nvvk::cmdBarrierImageLayout(cmd, m_gBuffers->getColorImage(i), VK_IMAGE_LAYOUT_UNDEFINED,
VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL);
}
nvvk::cmdBarrierImageLayout(cmd, m_gBuffers->getDepthImage(), VK_IMAGE_LAYOUT_UNDEFINED,
VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL,
VK_IMAGE_ASPECT_DEPTH_BIT | VK_IMAGE_ASPECT_STENCIL_BIT);
nvvk::createRenderingInfo renderingInfo({{0, 0}, renderSize}, colorImageViews, m_gBuffers->getDepthImageView(),
VK_ATTACHMENT_LOAD_OP_CLEAR, VK_ATTACHMENT_LOAD_OP_CLEAR);
renderingInfo.colorAttachments[0].clearValue = {1.0f, 0.0f, 1.0f, 1.0f}; // Color
renderingInfo.colorAttachments[1].clearValue = {0.0f, 0.0f, 0.0f, 0.0f}; // Motion vectors
renderingInfo.pStencilAttachment = nullptr;
vkCmdBeginRendering(cmd, &renderingInfo);
#if USE_D3D_CLIP_SPACE
// Flip viewport to simulate D3D clip space (this is supported since the VK_KHR_maintenance1 extension)
const VkViewport viewport = {0.0f,
static_cast<float>(renderSize.height),
static_cast<float>(renderSize.width),
-static_cast<float>(renderSize.height),
0.0f,
1.0f};
#else
const VkViewport viewport = {
0.0f, 0.0f, static_cast<float>(renderSize.width), static_cast<float>(renderSize.height), 0.0f, 1.0f};
#endif
vkCmdSetViewport(cmd, 0, 1, &viewport);
const VkRect2D scissor = {{0, 0}, {renderSize.width, renderSize.height}};
vkCmdSetScissor(cmd, 0, 1, &scissor);
vkCmdBindPipeline(cmd, VK_PIPELINE_BIND_POINT_GRAPHICS, m_scenePipeline);
vkCmdBindDescriptorSets(cmd, VK_PIPELINE_BIND_POINT_GRAPHICS, m_dset->getPipeLayout(), 0, m_dset->getSetsCount(),
m_dset->getSets(), 0, nullptr);
for(const Node& node : m_sceneNodes)
{
NodeInfo nodeInfo;
nodeInfo.model = nodeInfo.modelPrev = node.localMatrix();
if(node.motion)
{
nodeInfo.model *= glm::translate(glm::mat4(1.f), {-sinf(fmodf(m_animationTime, glm::two_pi<float>())), 0.0f, 0.0f});
nodeInfo.modelPrev *=
glm::translate(glm::mat4(1.f), {-sinf(fmodf(m_animationTimePrev, glm::two_pi<float>())), 0.0f, 0.0f});
}
nodeInfo.color = glm::vec3(sin(glm::vec3(1.33333f, 2.33333f, 3.33333f) * static_cast<float>(node.material)) * 0.5f + 0.5f);
vkCmdPushConstants(cmd, m_dset->getPipeLayout(), VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, 0,
sizeof(nodeInfo), &nodeInfo);
const VkDeviceSize offsets = {0};
vkCmdBindVertexBuffers(cmd, 0, 1, &m_sceneMeshes[node.mesh].verticesBuffer.buffer, &offsets);
vkCmdBindIndexBuffer(cmd, m_sceneMeshes[node.mesh].trianglesBuffer.buffer, 0, VK_INDEX_TYPE_UINT32);
vkCmdDrawIndexed(cmd, static_cast<uint32_t>(m_sceneMeshes[node.mesh].triangles.size() * 3), 1, 0, 0, 0);
}
vkCmdEndRendering(cmd);
}
// Tag current state of resources needed for DLSS Super Resolution
{
sl::Resource colorInputResource(sl::ResourceType::eTex2d, m_gBuffers->getColorImage(0), nullptr,
m_gBuffers->getColorImageView(0), VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL);
colorInputResource.width = renderSize.width;
colorInputResource.height = renderSize.height;
colorInputResource.nativeFormat = m_gBuffers->getColorFormat(0);
colorInputResource.mipLevels = 1;
colorInputResource.arrayLayers = 1;
colorInputResource.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_STORAGE_BIT
| VK_IMAGE_USAGE_TRANSFER_SRC_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT; // See nvvkhl::GBuffer::create
sl::Resource colorOutputResource(sl::ResourceType::eTex2d, m_outputImage.image, nullptr, m_outputImageView,
VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
colorOutputResource.width = outputSize.width;
colorOutputResource.height = outputSize.height;
colorOutputResource.nativeFormat = SAMPLE_COLOR_FORMATS[0];
colorOutputResource.mipLevels = 1;
colorOutputResource.arrayLayers = 1;
colorOutputResource.usage = VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_STORAGE_BIT; // See createImages below
sl::Resource depthResource(sl::ResourceType::eTex2d, m_gBuffers->getDepthImage(), nullptr,
m_gBuffers->getDepthImageView(), VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL);
depthResource.width = renderSize.width;
depthResource.height = renderSize.height;
depthResource.nativeFormat = m_gBuffers->getDepthFormat();
depthResource.mipLevels = 1;
depthResource.arrayLayers = 1;
depthResource.usage = VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_BIT
| VK_IMAGE_USAGE_TRANSFER_SRC_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT; // See nvvkhl::GBuffer::create
sl::Resource motionVectorsResource(sl::ResourceType::eTex2d, m_gBuffers->getColorImage(1), nullptr,
m_gBuffers->getColorImageView(1), VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL);
motionVectorsResource.width = renderSize.width;
motionVectorsResource.height = renderSize.height;
motionVectorsResource.nativeFormat = m_gBuffers->getColorFormat(1);
motionVectorsResource.mipLevels = 1;
motionVectorsResource.arrayLayers = 1;
motionVectorsResource.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_STORAGE_BIT
| VK_IMAGE_USAGE_TRANSFER_SRC_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT; // See nvvkhl::GBuffer::create
const sl::ResourceTag tags[] = {
sl::ResourceTag(&colorInputResource, sl::kBufferTypeScalingInputColor, sl::ResourceLifecycle::eValidUntilPresent),
sl::ResourceTag(&colorOutputResource, sl::kBufferTypeScalingOutputColor, sl::ResourceLifecycle::eValidUntilPresent),
sl::ResourceTag(&depthResource, sl::kBufferTypeDepth, sl::ResourceLifecycle::eValidUntilPresent),
sl::ResourceTag(&motionVectorsResource, sl::kBufferTypeMotionVectors, sl::ResourceLifecycle::eValidUntilPresent),
};
slSetTag(m_viewportHandle, tags, static_cast<uint32_t>(std::size(tags)), cmd);
}
if(m_dlssOptions.mode != sl::DLSSMode::eOff)
{
nvvk::cmdBarrierImageLayout(cmd, m_outputImage.image, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
const sl::BaseStructure* inputs[] = {&m_viewportHandle};
if(SL_FAILED(res, slEvaluateFeature(sl::kFeatureDLSS, *frame, inputs, static_cast<uint32_t>(std::size(inputs)), cmd)))
{
LOGE("Streamline: Failed to evaluate DLSS Super Resolution (%d)\n", res);
}
}
else
{
nvvk::cmdBarrierImageLayout(cmd, m_outputImage.image, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL,
VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
// When DLSS Super Resolution is off, 'm_outputImage' already points to 'm_gBuffers->getColorImage()', so no additional processing needed here
}
// Post-processing
{
nvvk::cmdBarrierImageLayout(cmd, m_swapChain.getActiveImage(), VK_IMAGE_LAYOUT_PRESENT_SRC_KHR,
VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL);
const nvvk::createRenderingInfo renderingInfo({{0, 0}, getSize()}, {m_swapChain.getActiveImageView()}, VK_NULL_HANDLE,
VK_ATTACHMENT_LOAD_OP_CLEAR, VK_ATTACHMENT_LOAD_OP_DONT_CARE);
vkCmdBeginRendering(cmd, &renderingInfo);
const VkViewport viewport = {
0.0f, 0.0f, static_cast<float>(outputSize.width), static_cast<float>(outputSize.height), 0.0f, 1.0f};
vkCmdSetViewport(cmd, 0, 1, &viewport);
const VkRect2D scissor = {{0, 0}, {outputSize.width, outputSize.height}};
vkCmdSetScissor(cmd, 0, 1, &scissor);
vkCmdBindPipeline(cmd, VK_PIPELINE_BIND_POINT_GRAPHICS, m_postPipeline);
vkCmdBindDescriptorSets(cmd, VK_PIPELINE_BIND_POINT_GRAPHICS, m_dset->getPipeLayout(), 0, m_dset->getSetsCount(),
m_dset->getSets(), 0, nullptr);
vkCmdDraw(cmd, 3, 1, 0, 0);
vkCmdEndRendering(cmd);
}
// Tag current state of additional resources needed for DLSS Frame Generation
{
sl::Resource colorResource(sl::ResourceType::eTex2d, m_outputImage.image, nullptr, m_outputImageView,
VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
colorResource.width = outputSize.width;
colorResource.height = outputSize.height;
colorResource.nativeFormat = SAMPLE_COLOR_FORMATS[0];
colorResource.mipLevels = 1;
colorResource.arrayLayers = 1;
colorResource.usage = VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_STORAGE_BIT; // See createImages below
const sl::ResourceTag tags[] = {
sl::ResourceTag(&colorResource, sl::kBufferTypeHUDLessColor, sl::ResourceLifecycle::eValidUntilPresent),
};
slSetTag(m_viewportHandle, tags, static_cast<uint32_t>(std::size(tags)), cmd);
}
// ImGui rendering
if(ImDrawData* const drawData = ImGui::GetDrawData();
drawData != nullptr && drawData->TotalVtxCount != 0 && drawData->TotalIdxCount != 0)
{
const nvvk::createRenderingInfo renderingInfo({{0, 0}, getSize()}, {m_swapChain.getActiveImageView()}, VK_NULL_HANDLE,
VK_ATTACHMENT_LOAD_OP_LOAD, VK_ATTACHMENT_LOAD_OP_DONT_CARE);
vkCmdBeginRendering(cmd, &renderingInfo);
ImGui_ImplVulkan_RenderDrawData(drawData, cmd);
vkCmdEndRendering(cmd);
}
nvvk::cmdBarrierImageLayout(cmd, m_swapChain.getActiveImage(), VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL,
VK_IMAGE_LAYOUT_PRESENT_SRC_KHR);
// Update previous matrices for next frame
m_projMatrixPrev = projMatrix;
m_viewMatrixPrev = viewMatrix;
}
void drawGui()
{
ImGui::SetNextWindowSize(ImVec2(200, 500), ImGuiCond_FirstUseEver);
ImGui::Begin("Settings");
// The framerate calculated by the application does not account for the additional present calls introduced by DLSS Frame Generation, so need to adjust it accordingly
uint32_t numFramesActuallyPresented = 1;
if(m_dlssgSupported == sl::Result::eOk)
{
sl::DLSSGState dlssgState;
if(SL_FAILED(res, slDLSSGGetState(m_viewportHandle, dlssgState, &m_dlssgOptions))) // Only call this once per frame!
{
LOGE("Streamline: Failed to get DLSS Frame Generation state (%d)\n", res);
}
else if(dlssgState.status != sl::DLSSGStatus::eOk)
{
LOGE("Streamline: DLSS Frame Generation status is %u\n", dlssgState.status);
// Turn off DLSS Frame Generation if something went wrong
m_dlssgOptions.mode = sl::DLSSGMode::eOff;
slDLSSGSetOptions(m_viewportHandle, m_dlssgOptions);
}
numFramesActuallyPresented = std::max(dlssgState.numFramesActuallyPresented, 1u);
}
ImGui::Text("FPS: %f\n", static_cast<double>(ImGui::GetIO().Framerate * numFramesActuallyPresented));
if(ImGui::CollapsingHeader("Reflex"))
{
ImGui::PushID("Reflex");
bool modified = false;
modified |= ImGui::Combo("Mode", reinterpret_cast<int*>(&m_reflexOptions.mode), "Off\0Low Latency\0Low Latency with Boost\0");
if(int fps = m_reflexOptions.frameLimitUs != 0 ? static_cast<int>((1000.0f / m_reflexOptions.frameLimitUs) * 1000.0f) : 0;
ImGui::InputInt("FPS Limit", &fps, 1, 100, ImGuiInputTextFlags_EnterReturnsTrue))
{
// Clamp possible FPS range
if(fps < 0)
fps = 0;
if(fps > 200)
fps = 200;
m_reflexOptions.frameLimitUs = static_cast<uint32_t>((1000.0f / fps) * 1000.0f);
modified = true;
}
if(modified)
{
if(SL_FAILED(res, slReflexSetOptions(m_reflexOptions)))
{
LOGE("Streamline: Failed to set Reflex options (%d)\n", res);
}
}
ImGui::PopID();
}
if(ImGui::CollapsingHeader("DLSS Super Resolution"))
{
ImGui::PushID("DLSS Super Resolution");
if(m_dlssSupported == sl::Result::eOk)
{
bool modified = false;
modified |= ImGui::Combo("Mode", reinterpret_cast<int*>(&m_dlssOptions.mode),
"Off\0Performance\0Balanced\0Quality\0Ultra Performance\0Ultra Quality\0DLAA\0");
modified |= ImGui::SliderFloat("Sharpness", &m_dlssOptions.sharpness, 0.0f, 1.0f);
if(modified)
{
createImages(getSize());
}
}
else
{
ImGui::TextWrapped("DLSS Super Resolution is not supported on this adapter (return code %d)", m_dlssSupported);
}
ImGui::PopID();
}
if(ImGui::CollapsingHeader("DLSS Frame Generation"))
{
ImGui::PushID("DLSS Frame Generation");
if(m_dlssgSupported == sl::Result::eOk)
{
bool modified = false;
modified |= ImGui::Checkbox("Enabled", reinterpret_cast<bool*>(&m_dlssgOptions.mode));
if(modified)
{
// DLSS Frame Generation requires Reflex to be on
if(m_dlssgOptions.mode != sl::DLSSGMode::eOff && m_reflexOptions.mode == sl::ReflexMode::eOff)
{
m_reflexOptions.mode = sl::ReflexMode::eLowLatency;
slReflexSetOptions(m_reflexOptions);
}
if(SL_FAILED(res, slDLSSGSetOptions(m_viewportHandle, m_dlssgOptions)))
{
LOGE("Streamline: Failed to set DLSS Frame Generation options (%d)\n", res);
}
}
}
else
{
if(m_dlssgSupported == sl::Result::eErrorOSDisabledHWS)
{
ImGui::TextWrapped(
"DLSS Frame Generation is not supported because hardware-accelerated GPU scheduling is not enabled: "
"https://devblogs.microsoft.com/directx/hardware-accelerated-gpu-scheduling/");
}
else
{
ImGui::TextWrapped("DLSS Frame Generation is not supported on this adapter (return code %d)", m_dlssgSupported);
}
}
ImGui::PopID();
}
ImGui::End();
}
private:
void createScene()
{
// Create meshes
m_sceneMeshes.emplace_back(nvh::createSphereUv());
m_sceneMeshes.emplace_back(nvh::createCube());
m_sceneMeshes.emplace_back(nvh::createTetrahedron());
m_sceneMeshes.emplace_back(nvh::createOctahedron());
m_sceneMeshes.emplace_back(nvh::createIcosahedron());
m_sceneMeshes.emplace_back(nvh::createConeMesh());
const int num_meshes = static_cast<int>(m_sceneMeshes.size());
const VkCommandBuffer cmd = createTempCmdBuffer();
for(int i = 0; i < num_meshes; i++)
{
PrimitiveMeshVk& mesh = m_sceneMeshes[i];
mesh.verticesBuffer = m_alloc->createBuffer(cmd, mesh.vertices, VK_BUFFER_USAGE_VERTEX_BUFFER_BIT);
mesh.trianglesBuffer = m_alloc->createBuffer(cmd, mesh.triangles, VK_BUFFER_USAGE_INDEX_BUFFER_BIT);
}
m_frameInfo = m_alloc->createBuffer(sizeof(FrameInfo), VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
submitTempCmdBuffer(cmd);
// Create instances/nodes
for(int i = 0; i < num_meshes; i++)
{
Node& node = m_sceneNodes.emplace_back();
node.mesh = i;
node.material = i;
node.translation = glm::vec3(-(static_cast<float>(num_meshes) * 0.5f) + static_cast<float>(i), 0.0f, 0.0f);
node.motion = true;
}
Node& background = m_sceneNodes.emplace_back();
background.mesh = 1;
background.translation = {0.0f, 0.0f, -5.0f};
background.scale = {50, 50, 50};
CameraManip.setClipPlanes({0.1f, 100.0f});
CameraManip.setLookat({0.0f, 0.0f, 5.0f}, {0.0f, 0.0f, 0.0f}, {0.0f, 1.0f, 0.0f});
}
void createPipelines()
{
m_dset->addBinding(0, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1, VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT);
m_dset->addBinding(1, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT);
m_dset->initLayout();
m_dset->initPool(1);
const VkPushConstantRange pushConstantRange = {VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, 0, sizeof(NodeInfo)};
m_dset->initPipeLayout(1, &pushConstantRange);
// Update descriptor set
{
const VkDescriptorBufferInfo frameInfoBufferInfo = {m_frameInfo.buffer, 0, VK_WHOLE_SIZE};
const VkWriteDescriptorSet frameInfoWrite = m_dset->makeWrite(0, 0, &frameInfoBufferInfo);
vkUpdateDescriptorSets(m_device, 1, &frameInfoWrite, 0, nullptr);
}
// Create the scene rendering pipeline
{
nvvk::GraphicsPipelineState pipelineState;
pipelineState.rasterizationState.cullMode = VK_CULL_MODE_NONE;
pipelineState.addBindingDescriptions({{0, sizeof(nvh::PrimitiveVertex)}});
pipelineState.addAttributeDescriptions({
{0, 0, VK_FORMAT_R32G32B32_SFLOAT, static_cast<uint32_t>(offsetof(nvh::PrimitiveVertex, p))}, // Position
{1, 0, VK_FORMAT_R32G32B32_SFLOAT, static_cast<uint32_t>(offsetof(nvh::PrimitiveVertex, n))}, // Normal
});
pipelineState.clearBlendAttachmentStates();
for(uint32_t i = 0; i < std::size(SAMPLE_COLOR_FORMATS); i++)
{
pipelineState.addBlendAttachmentState(nvvk::GraphicsPipelineState::makePipelineColorBlendAttachmentState());
}
VkPipelineRenderingCreateInfo renderingInfo = {VK_STRUCTURE_TYPE_PIPELINE_RENDERING_CREATE_INFO_KHR};
renderingInfo.colorAttachmentCount = static_cast<uint32_t>(std::size(SAMPLE_COLOR_FORMATS));
renderingInfo.pColorAttachmentFormats = SAMPLE_COLOR_FORMATS;
renderingInfo.depthAttachmentFormat = SAMPLE_DEPTH_FORMAT;
nvvk::GraphicsPipelineGenerator pipelineGenerator(m_device, m_dset->getPipeLayout(), renderingInfo, pipelineState);
pipelineGenerator.addShader(std::vector<uint32_t>{std::begin(scene_vert), std::end(scene_vert)}, VK_SHADER_STAGE_VERTEX_BIT);
pipelineGenerator.addShader(std::vector<uint32_t>{std::begin(scene_frag), std::end(scene_frag)}, VK_SHADER_STAGE_FRAGMENT_BIT);
m_scenePipeline = pipelineGenerator.createPipeline();
}
// Create the post-processing pipeline
{
nvvk::GraphicsPipelineState pipelineState;
pipelineState.rasterizationState.cullMode = VK_CULL_MODE_NONE;
const VkFormat colorFormat = m_swapChain.getFormat();
VkPipelineRenderingCreateInfo renderingInfo = {VK_STRUCTURE_TYPE_PIPELINE_RENDERING_CREATE_INFO_KHR};
renderingInfo.colorAttachmentCount = 1;
renderingInfo.pColorAttachmentFormats = &colorFormat;
nvvk::GraphicsPipelineGenerator pipelineGenerator(m_device, m_dset->getPipeLayout(), renderingInfo, pipelineState);
pipelineGenerator.addShader(std::vector<uint32_t>{std::begin(post_vert), std::end(post_vert)}, VK_SHADER_STAGE_VERTEX_BIT);
pipelineGenerator.addShader(std::vector<uint32_t>{std::begin(post_frag), std::end(post_frag)}, VK_SHADER_STAGE_FRAGMENT_BIT);
m_postPipeline = pipelineGenerator.createPipeline();
}
}
void createImages(const VkExtent2D& size)
{
vkDeviceWaitIdle(m_device);
destroyImages();
// Update output dimensions for DLSS Super Resolution
m_dlssOptions.outputWidth = size.width;
m_dlssOptions.outputHeight = size.height;
m_dlssOptions.colorBuffersHDR =
SAMPLE_COLOR_FORMATS[0] >= VK_FORMAT_A2R10G10B10_UNORM_PACK32 ? sl::Boolean::eTrue : sl::Boolean::eFalse;
if(SL_FAILED(res, slDLSSSetOptions(m_viewportHandle, m_dlssOptions)))
{
LOGE("Streamline: Failed to set DLSS Super Resolution options (%d)\n", res);
}
sl::DLSSOptimalSettings dlssSettings;
if(SL_FAILED(res, slDLSSGetOptimalSettings(m_dlssOptions, dlssSettings)) || m_dlssOptions.mode == sl::DLSSMode::eOff
|| dlssSettings.optimalRenderWidth == 0 || dlssSettings.optimalRenderHeight == 0)
{
// Default render dimensions to the window dimensions if DLSS is not enabled
dlssSettings.optimalRenderWidth = size.width;
dlssSettings.optimalRenderHeight = size.height;
}
const VkExtent2D renderSize = {dlssSettings.optimalRenderWidth, dlssSettings.optimalRenderHeight};
m_gBuffers = std::make_unique<nvvkhl::GBuffer>(
m_device, m_alloc.get(), renderSize,
std::vector<VkFormat>(std::begin(SAMPLE_COLOR_FORMATS), std::end(SAMPLE_COLOR_FORMATS)), SAMPLE_DEPTH_FORMAT);
if(m_dlssOptions.mode != sl::DLSSMode::eOff)
{
// The image DLSS Super Resolution outputs to must have the VK_IMAGE_USAGE_STORAGE_BIT usage flag, or else nothing will be rendered to it!
const VkImageCreateInfo outputCreateInfo =
nvvk::makeImage2DCreateInfo(size, SAMPLE_COLOR_FORMATS[0], VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_STORAGE_BIT);
m_outputImage = m_alloc->createImage(outputCreateInfo);
const VkImageViewCreateInfo outputViewCreateInfo =
nvvk::makeImage2DViewCreateInfo(m_outputImage.image, outputCreateInfo.format);
NVVK_CHECK(vkCreateImageView(m_device, &outputViewCreateInfo, nullptr, &m_outputImageView));
}
else
{
m_outputImage.image = m_gBuffers->getColorImage();
m_outputImageView = m_gBuffers->getColorImageView();
}
// Update descriptor set with the new output image
{
const VkDescriptorImageInfo outputImageInfo = {m_defaultSampler, m_outputImageView, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL};
const VkWriteDescriptorSet outputImageWrite = m_dset->makeWrite(0, 1, &outputImageInfo);
vkUpdateDescriptorSets(m_device, 1, &outputImageWrite, 0, nullptr);
}
}
void destroyScene()
{
for(PrimitiveMeshVk& mesh : m_sceneMeshes)
{
m_alloc->destroy(mesh.verticesBuffer);
m_alloc->destroy(mesh.trianglesBuffer);
}
m_sceneNodes.clear();
m_sceneMeshes.clear();
m_alloc->destroy(m_frameInfo);
}
void destroyPipelines()
{
vkDestroyPipeline(m_device, m_scenePipeline, nullptr);
m_scenePipeline = VK_NULL_HANDLE;
vkDestroyPipeline(m_device, m_postPipeline, nullptr);
m_postPipeline = VK_NULL_HANDLE;
}
void destroyImages()
{
if(m_outputImage.memHandle != nullptr)
{
vkDestroyImageView(m_device, m_outputImageView, nullptr);
m_alloc->destroy(m_outputImage);
}
else
{
m_outputImage.image = VK_NULL_HANDLE;
}
m_outputImageView = VK_NULL_HANDLE;
m_gBuffers.reset();
}
sl::Result m_dlssSupported = sl::Result::eOk;
sl::Result m_dlssgSupported = sl::Result::eOk;
sl::DLSSOptions m_dlssOptions;
sl::DLSSGOptions m_dlssgOptions;
sl::ReflexOptions m_reflexOptions;
sl::ViewportHandle m_viewportHandle;
std::unique_ptr<nvvk::DescriptorSetContainer> m_dset;
std::unique_ptr<nvvk::ResourceAllocator> m_alloc;
VkSampler m_defaultSampler = VK_NULL_HANDLE;
struct PrimitiveMeshVk : nvh::PrimitiveMesh
{
PrimitiveMeshVk(const nvh::PrimitiveMesh& mesh)
: PrimitiveMesh(mesh)
{
}
nvvk::Buffer verticesBuffer;
nvvk::Buffer trianglesBuffer;
};
std::vector<PrimitiveMeshVk> m_sceneMeshes;
struct Node : nvh::Node
{
bool motion = false;
};
std::vector<Node> m_sceneNodes;
nvvk::Buffer m_frameInfo;
VkPipeline m_scenePipeline = VK_NULL_HANDLE;
VkPipeline m_postPipeline = VK_NULL_HANDLE;
std::unique_ptr<nvvkhl::GBuffer> m_gBuffers;
nvvk::Image m_outputImage;
VkImageView m_outputImageView = VK_NULL_HANDLE;
float m_animationTime = 0.0f;
float m_animationTimePrev = 0.0f;
glm::mat4 m_projMatrixPrev;
glm::mat4 m_viewMatrixPrev;
};
int main(int argc, char** argv)
{
// Setup GLFW window
if(!glfwInit())
{
LOGE("GLFW: Initialization failed\n");
return static_cast<int>(sl::Result::eErrorNotInitialized);
}
if(!glfwVulkanSupported())
{
LOGE("GLFW: Vulkan not supported\n");
return static_cast<int>(sl::Result::eErrorAdapterNotSupported);
}
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
GLFWwindow* const window = glfwCreateWindow(SAMPLE_WIDTH, SAMPLE_HEIGHT, PROJECT_NAME, nullptr, nullptr);
if(window == nullptr)
{
LOGE("GLFW: Failed to create window\n");
return static_cast<int>(sl::Result::eErrorNotInitialized);
}
// Initialize Streamline (this must happen before any Vulkan calls are made)
sl::Preferences pref;
pref.showConsole = true;
pref.logLevel = sl::LogLevel::eVerbose;
#if SL_MANUAL_HOOKING
pref.flags |= sl::PreferenceFlags::eUseManualHooking;
#endif
pref.featuresToLoad = SL_FEATURES;
pref.numFeaturesToLoad = static_cast<uint32_t>(std::size(SL_FEATURES));
pref.applicationId = 231313132;
pref.engine = sl::EngineType::eCustom;
pref.engineVersion = 0;
pref.renderAPI = sl::RenderAPI::eVulkan;
if(SL_FAILED(res, slInit(pref)))
{
LOGE("Streamline: Initialization failed (%d)\n", res);
return static_cast<int>(res);
}
nvvk::ContextCreateInfo contextInfo(/* bUseValidation = */ false);
contextInfo.setVersion(1, 3);
// Add Vulkan extensions required by GLFW
{
contextInfo.addDeviceExtension(VK_KHR_SWAPCHAIN_EXTENSION_NAME);
uint32_t vkNumInstanceExtensions = 0;
const char* const* const vkInstanceExtensions = glfwGetRequiredInstanceExtensions(&vkNumInstanceExtensions);
for(uint32_t i = 0; i < vkNumInstanceExtensions; i++)
contextInfo.addInstanceExtension(vkInstanceExtensions[i]);
}
bool useVsync = false;
#if SL_MANUAL_HOOKING
VkPhysicalDeviceOpticalFlowFeaturesNV opticalFlowFeatures = {VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_OPTICAL_FLOW_FEATURES_NV};
// Add Vulkan extensions required by Streamline features
for(const sl::Feature feature : SL_FEATURES)
{
sl::FeatureRequirements requirements;
if(SL_FAILED(res, slGetFeatureRequirements(feature, requirements)))
{
LOGE("Streamline: Failed to get feature requirements for feature %u (%d)\n", feature, res);
return static_cast<int>(res);
}
if((requirements.flags & sl::FeatureRequirementFlags::eVulkanSupported) == 0)
{
LOGE("Streamline: Feature %u is not supported on Vulkan\n", feature);
return static_cast<int>(sl::Result::eErrorFeatureNotSupported);
}
if((requirements.flags & sl::FeatureRequirementFlags::eVSyncOffRequired) != 0)
useVsync = false;
if(requirements.vkNumComputeQueuesRequired != 0)
contextInfo.addRequestedQueue(VK_QUEUE_COMPUTE_BIT, requirements.vkNumComputeQueuesRequired);
if(requirements.vkNumGraphicsQueuesRequired != 0)
contextInfo.addRequestedQueue(VK_QUEUE_GRAPHICS_BIT, requirements.vkNumGraphicsQueuesRequired);
if(requirements.vkNumOpticalFlowQueuesRequired != 0)
contextInfo.addRequestedQueue(VK_QUEUE_OPTICAL_FLOW_BIT_NV, requirements.vkNumOpticalFlowQueuesRequired);
for(uint32_t i = 0; i < requirements.vkNumDeviceExtensions; i++)
{
void* featureStruct = nullptr;
if(strcmp(requirements.vkDeviceExtensions[i], VK_NV_OPTICAL_FLOW_EXTENSION_NAME) == 0)
{
featureStruct = &opticalFlowFeatures;
opticalFlowFeatures.opticalFlow = VK_TRUE;
}
contextInfo.addDeviceExtension(requirements.vkDeviceExtensions[i], false, featureStruct);
}
for(uint32_t i = 0; i < requirements.vkNumInstanceExtensions; i++)
{
contextInfo.addInstanceExtension(requirements.vkInstanceExtensions[i]);
}
}
#endif
// Create Vulkan device and queues
nvvk::Context context;
if(!context.init(contextInfo))
{
return static_cast<int>(sl::Result::eErrorVulkanAPI);
}
// Verify that the requested features are actually supported on the created device
sl::AdapterInfo adapter;
adapter.vkPhysicalDevice = context.m_physicalDevice;
// This sample can optionally run without DLSS, but it requires Reflex
sl::Result dlssSupported = sl::Result::eOk;
sl::Result dlssgSupported = sl::Result::eOk;
for(const sl::Feature feature : SL_FEATURES)
{
if(SL_FAILED(res, slIsFeatureSupported(feature, adapter)))
{
if(res == sl::Result::eErrorOSDisabledHWS)
{
LOGW("Streamline: Feature %u is not supported because hardware-accelerated GPU scheduling is not enabled: https://devblogs.microsoft.com/directx/hardware-accelerated-gpu-scheduling/.\n",
feature);
}
else
{
LOGE(
"Streamline: Feature %u is not supported on this adapter (return code %d). "
"The log messages from Streamline may include more information.\n",
feature, res);
}
switch(feature)
{
case sl::kFeatureDLSS:
LOGW("This sample can still run, but DLSS Super Resolution will not be available\n");
dlssSupported = res;
break;
case sl::kFeatureDLSS_G:
LOGW("This sample can still run, but DLSS Frame Generation will not be available\n");
dlssgSupported = res;
break;
default:
return static_cast<int>(res);
}