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
|
#include "example-base.h"
#include <chrono>
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <Windows.h>
#endif
using namespace Slang;
using namespace gfx;
Slang::Result WindowedAppBase::initializeBase(
const char* title,
int width,
int height,
DeviceType deviceType)
{
// Create a window for our application to render into.
//
platform::WindowDesc windowDesc;
windowDesc.title = title;
windowDesc.width = width;
windowDesc.height = height;
windowWidth = width;
windowHeight = height;
windowDesc.style = platform::WindowStyle::Default;
gWindow = platform::Application::createWindow(windowDesc);
gWindow->events.mainLoop = [this]() { mainLoop(); };
gWindow->events.sizeChanged = Slang::Action<>(this, &WindowedAppBase::windowSizeChanged);
// Initialize the rendering layer.
#ifdef _DEBUG
// Enable debug layer in debug config.
gfxEnableDebugLayer();
#endif
IDevice::Desc deviceDesc = {};
deviceDesc.deviceType = deviceType;
gfx::Result res = gfxCreateDevice(&deviceDesc, gDevice.writeRef());
if (SLANG_FAILED(res))
return res;
auto deviceInfo = gDevice->getDeviceInfo();
Slang::StringBuilder titleSb;
titleSb << title << " (" << deviceInfo.apiName << ": " << deviceInfo.adapterName << ")";
gWindow->setText(titleSb.getBuffer());
ICommandQueue::Desc queueDesc = {};
queueDesc.type = ICommandQueue::QueueType::Graphics;
gQueue = gDevice->createCommandQueue(queueDesc);
// Create swapchain and framebuffers.
gfx::ISwapchain::Desc swapchainDesc = {};
swapchainDesc.format = gfx::Format::R8G8B8A8_UNORM;
swapchainDesc.width = width;
swapchainDesc.height = height;
swapchainDesc.imageCount = kSwapchainImageCount;
swapchainDesc.queue = gQueue;
gfx::WindowHandle windowHandle = gWindow->getNativeHandle().convert<gfx::WindowHandle>();
gSwapchain = gDevice->createSwapchain(swapchainDesc, windowHandle);
IFramebufferLayout::AttachmentLayout renderTargetLayout = {gSwapchain->getDesc().format, 1};
IFramebufferLayout::AttachmentLayout depthLayout = {gfx::Format::D32_FLOAT, 1};
IFramebufferLayout::Desc framebufferLayoutDesc;
framebufferLayoutDesc.renderTargetCount = 1;
framebufferLayoutDesc.renderTargets = &renderTargetLayout;
framebufferLayoutDesc.depthStencil = &depthLayout;
SLANG_RETURN_ON_FAIL(
gDevice->createFramebufferLayout(framebufferLayoutDesc, gFramebufferLayout.writeRef()));
createSwapchainFramebuffers();
for (uint32_t i = 0; i < kSwapchainImageCount; i++)
{
gfx::ITransientResourceHeap::Desc transientHeapDesc;
transientHeapDesc.constantBufferSize = 4096 * 1024;
auto transientHeap = gDevice->createTransientResourceHeap(transientHeapDesc);
gTransientHeaps.add(transientHeap);
}
gfx::IRenderPassLayout::Desc renderPassDesc = {};
renderPassDesc.framebufferLayout = gFramebufferLayout;
renderPassDesc.renderTargetCount = 1;
IRenderPassLayout::AttachmentAccessDesc renderTargetAccess = {};
IRenderPassLayout::AttachmentAccessDesc depthStencilAccess = {};
renderTargetAccess.loadOp = IRenderPassLayout::AttachmentLoadOp::Clear;
renderTargetAccess.storeOp = IRenderPassLayout::AttachmentStoreOp::Store;
renderTargetAccess.initialState = ResourceState::Undefined;
renderTargetAccess.finalState = ResourceState::Present;
depthStencilAccess.loadOp = IRenderPassLayout::AttachmentLoadOp::Clear;
depthStencilAccess.storeOp = IRenderPassLayout::AttachmentStoreOp::Store;
depthStencilAccess.initialState = ResourceState::Undefined;
depthStencilAccess.finalState = ResourceState::DepthWrite;
renderPassDesc.renderTargetAccess = &renderTargetAccess;
renderPassDesc.depthStencilAccess = &depthStencilAccess;
gRenderPass = gDevice->createRenderPassLayout(renderPassDesc);
return SLANG_OK;
}
void WindowedAppBase::mainLoop()
{
int frameBufferIndex = gSwapchain->acquireNextImage();
if (frameBufferIndex == -1)
return;
gTransientHeaps[frameBufferIndex]->synchronizeAndReset();
renderFrame(frameBufferIndex);
}
void WindowedAppBase::createSwapchainFramebuffers()
{
gFramebuffers.clear();
for (uint32_t i = 0; i < kSwapchainImageCount; i++)
{
gfx::ITextureResource::Desc depthBufferDesc;
depthBufferDesc.type = IResource::Type::Texture2D;
depthBufferDesc.size.width = gSwapchain->getDesc().width;
depthBufferDesc.size.height = gSwapchain->getDesc().height;
depthBufferDesc.size.depth = 1;
depthBufferDesc.format = gfx::Format::D32_FLOAT;
depthBufferDesc.defaultState = ResourceState::DepthWrite;
depthBufferDesc.allowedStates = ResourceStateSet(ResourceState::DepthWrite);
ComPtr<gfx::ITextureResource> depthBufferResource =
gDevice->createTextureResource(depthBufferDesc, nullptr);
ComPtr<gfx::ITextureResource> colorBuffer;
gSwapchain->getImage(i, colorBuffer.writeRef());
gfx::IResourceView::Desc colorBufferViewDesc;
memset(&colorBufferViewDesc, 0, sizeof(colorBufferViewDesc));
colorBufferViewDesc.format = gSwapchain->getDesc().format;
colorBufferViewDesc.renderTarget.shape = gfx::IResource::Type::Texture2D;
colorBufferViewDesc.type = gfx::IResourceView::Type::RenderTarget;
ComPtr<gfx::IResourceView> rtv =
gDevice->createTextureView(colorBuffer.get(), colorBufferViewDesc);
gfx::IResourceView::Desc depthBufferViewDesc;
memset(&depthBufferViewDesc, 0, sizeof(depthBufferViewDesc));
depthBufferViewDesc.format = gfx::Format::D32_FLOAT;
depthBufferViewDesc.renderTarget.shape = gfx::IResource::Type::Texture2D;
depthBufferViewDesc.type = gfx::IResourceView::Type::DepthStencil;
ComPtr<gfx::IResourceView> dsv =
gDevice->createTextureView(depthBufferResource.get(), depthBufferViewDesc);
gfx::IFramebuffer::Desc framebufferDesc;
framebufferDesc.renderTargetCount = 1;
framebufferDesc.depthStencilView = dsv.get();
framebufferDesc.renderTargetViews = rtv.readRef();
framebufferDesc.layout = gFramebufferLayout;
ComPtr<gfx::IFramebuffer> frameBuffer = gDevice->createFramebuffer(framebufferDesc);
gFramebuffers.add(frameBuffer);
}
}
void WindowedAppBase::windowSizeChanged()
{
// Wait for the GPU to finish.
gQueue->waitOnHost();
auto clientRect = gWindow->getClientRect();
if (clientRect.width > 0 && clientRect.height > 0)
{
// Free all framebuffers before resizing swapchain.
gFramebuffers = decltype(gFramebuffers)();
// Resize swapchain.
if (gSwapchain->resize(clientRect.width, clientRect.height) == SLANG_OK)
{
// Recreate framebuffers for each swapchain back buffer image.
createSwapchainFramebuffers();
windowWidth = clientRect.width;
windowHeight = clientRect.height;
}
}
}
int64_t getCurrentTime() { return std::chrono::high_resolution_clock::now().time_since_epoch().count(); }
int64_t getTimerFrequency() { return std::chrono::high_resolution_clock::period::den; }
class DebugCallback : public IDebugCallback
{
public:
virtual SLANG_NO_THROW void SLANG_MCALL
handleMessage(DebugMessageType type, DebugMessageSource source, const char* message) override
{
const char* typeStr = "";
switch (type)
{
case DebugMessageType::Info:
typeStr = "INFO: ";
break;
case DebugMessageType::Warning:
typeStr = "WARNING: ";
break;
case DebugMessageType::Error:
typeStr = "ERROR: ";
break;
default:
break;
}
const char* sourceStr = "[GraphicsLayer]: ";
switch (source)
{
case DebugMessageSource::Slang:
sourceStr = "[Slang]: ";
break;
case DebugMessageSource::Driver:
sourceStr = "[Driver]: ";
break;
}
printf("%s%s%s\n", sourceStr, typeStr, message);
#ifdef _WIN32
OutputDebugStringA(sourceStr);
OutputDebugStringA(typeStr);
OutputDebugStringW(String(message).toWString());
OutputDebugStringW(L"\n");
#endif
}
};
void initDebugCallback()
{
static DebugCallback callback = {};
gfxSetDebugCallback(&callback);
}
#ifdef _WIN32
void _Win32OutputDebugString(const char* str) { OutputDebugStringW(Slang::String(str).toWString().begin()); }
#endif
|
