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wg_engine: multicanvas support (multicanvas example)

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Updated multicanvas example
Issue https://github.com/thorvg/thorvg/issues/2745
This commit is contained in:
Sergii Liebodkin 2024-11-21 14:53:14 +00:00 • committed by Hermet Park
parent 3805f26aff
commit d0bc4bc4f5
2 changed files with 80 additions and 9 deletions
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2
examples/Example.h
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@ -425,7 +425,7 @@ struct WgWindow : Window
virtual ~WgWindow()
{
//wgpuSurfaceRelease(surface);
wgpuSurfaceRelease(surface);
wgpuInstanceRelease(instance);
}

87
examples/MultiCanvas.cpp
View file

@ -251,11 +251,33 @@ void runGl()
/* WG Engine Specific Setup */
/************************************************************************/
#ifdef THORVG_WG_RASTER_SUPPORT
void wgCopyTextureToTexture(WGPUDevice device, WGPUTexture src, WGPUTexture dst, uint32_t posX, uint32_t posY, uint32_t width, uint32_t height) {
WGPUQueue queue = wgpuDeviceGetQueue(device);
// create command encoder
const WGPUCommandEncoderDescriptor commandEncoderDesc{};
WGPUCommandEncoder commandEncoder = wgpuDeviceCreateCommandEncoder(device, &commandEncoderDesc);
// copy canvas data to surface
const WGPUImageCopyTexture texSrc { .texture = src };
const WGPUImageCopyTexture texDst { .texture = dst, .origin = { .x = posX, .y = posY } };
const WGPUExtent3D copySize { .width = width, .height = height, .depthOrArrayLayers = 1 };
wgpuCommandEncoderCopyTextureToTexture(commandEncoder, &texSrc, &texDst, &copySize);
// release command encoder
const WGPUCommandBufferDescriptor commandBufferDesc{};
WGPUCommandBuffer commandsBuffer = wgpuCommandEncoderFinish(commandEncoder, &commandBufferDesc);
wgpuQueueSubmit(queue, 1, &commandsBuffer);
wgpuCommandBufferRelease(commandsBuffer);
wgpuCommandEncoderRelease(commandEncoder);
wgpuQueueRelease(queue);
}
#endif
void runWg()
{
#if 1
cout << "Not Support WebGPU" << endl;
#else
#ifdef THORVG_WG_RASTER_SUPPORT
//TODO with Drawing Target?
auto window = SDL_CreateWindow("ThorVG Example (WebGPU)", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, WIDTH, HEIGHT, SDL_WINDOW_HIDDEN);
@ -303,27 +325,76 @@ void runWg()
surfaceDesc.label = "The surface";
auto surface = wgpuInstanceCreateSurface(instance, &surfaceDesc);
// request adapter
WGPUAdapter adapter{};
const WGPURequestAdapterOptions requestAdapterOptions { .compatibleSurface = surface, .powerPreference = WGPUPowerPreference_HighPerformance };
auto onAdapterRequestEnded = [](WGPURequestAdapterStatus status, WGPUAdapter adapter, char const * message, void * pUserData) { *((WGPUAdapter*)pUserData) = adapter; };
wgpuInstanceRequestAdapter(instance, &requestAdapterOptions, onAdapterRequestEnded, &adapter);
// get adapter and surface properties
WGPUFeatureName featureNames[32]{};
size_t featuresCount = wgpuAdapterEnumerateFeatures(adapter, featureNames);
// request device
WGPUDevice device{};
const WGPUDeviceDescriptor deviceDesc { .label = "The shared device", .requiredFeatureCount = featuresCount, .requiredFeatures = featureNames };
auto onDeviceRequestEnded = [](WGPURequestDeviceStatus status, WGPUDevice device, char const * message, void * pUserData) { *((WGPUDevice*)pUserData) = device; };
wgpuAdapterRequestDevice(adapter, &deviceDesc, onDeviceRequestEnded, &device);
// setup surface configuration
WGPUSurfaceConfiguration surfaceConfiguration {
.device = device,
.format = WGPUTextureFormat_BGRA8Unorm,
.usage = WGPUTextureUsage_RenderAttachment | WGPUTextureUsage_CopyDst,
.width = WIDTH, .height = HEIGHT
};
wgpuSurfaceConfigure(surface, &surfaceConfiguration);
// create offscren target texure
const WGPUTextureDescriptor textureDesc {
.usage = WGPUTextureUsage_CopySrc | WGPUTextureUsage_RenderAttachment,
.dimension = WGPUTextureDimension_2D, .size = { SIZE, SIZE, 1 },
.format = WGPUTextureFormat_BGRA8Unorm, .mipLevelCount = 1, .sampleCount = 1
};
WGPUTexture renderTarget = wgpuDeviceCreateTexture(device, &textureDesc);
WGPUSurfaceTexture surfaceTexture{};
wgpuSurfaceGetCurrentTexture(surface, &surfaceTexture);
for (int counter = 0; counter < NUM_PER_LINE * NUM_PER_LINE; ++counter) {
auto canvas = tvg::WgCanvas::gen();
auto canvas = unique_ptr<tvg::WgCanvas>(tvg::WgCanvas::gen());
//Set the canvas target and draw on it.
tvgexam::verify(canvas->target(instance, surface, WIDTH, HEIGHT));
tvgexam::verify(canvas->target(device, instance, renderTarget, SIZE, SIZE, 1));
content(canvas.get());
if (tvgexam::verify(canvas->draw())) {
tvgexam::verify(canvas->sync());
}
}
// After the WgCanvas::sync() function, the content is rendered to the render target
// The texture is now ready to be blit to the screen
uint32_t y = (counter / NUM_PER_LINE) * SIZE;
uint32_t x = (counter % NUM_PER_LINE) * SIZE;
wgCopyTextureToTexture(device, renderTarget, surfaceTexture.texture, x, y, SIZE, SIZE);
}
SDL_ShowWindow(window);
wgpuSurfacePresent(surface);
mainloop();
wgpuTextureRelease(surfaceTexture.texture);
wgpuTextureDestroy(renderTarget);
wgpuTextureRelease(renderTarget);
wgpuDeviceRelease(device);
wgpuAdapterRelease(adapter);
wgpuSurfaceUnconfigure(surface);
wgpuSurfaceRelease(surface);
wgpuInstanceRelease(instance);
SDL_DestroyWindow(window);
#else
cout << "webgpu driver is not detected!" << endl;
#endif
cout << "Not Support WebGPU" << endl;
#endif
}