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check for beginFrame returning false in project() and correctly calculate numChannels/channelSize

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This commit is contained in:
Nick Fisher
2025-05-22 15:19:03 +08:00
parent 10136c8cde
commit a31f11151e
1 changed files with 62 additions and 47 deletions
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109
thermion_dart/lib/src/filament/src/implementation/ffi_filament_app.dart
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@@ -710,69 +710,84 @@ class FFIFilamentApp extends FilamentApp<Pointer> {
}
await updateRenderOrder();
await withBoolCallback((cb) {
final beginFrame = await withBoolCallback((cb) {
Renderer_beginFrameRenderThread(
renderer, swapChain!.swapChain, 0.toBigInt, cb);
});
final views = <FFIView>[];
if (view != null) {
views.add(view);
} else {
views.addAll(_swapChains[swapChain]!);
}
final pixelBuffers = <(View, Uint8List)>[];
for (final view in views) {
beforeRender?.call(view);
final viewport = await view.getViewport();
final pixelBuffer =
Uint8List(viewport.width * viewport.height * 4 * sizeOf<Float>());
await withVoidCallback((requestId, cb) {
Renderer_renderRenderThread(
renderer,
view.view,
requestId,
cb,
);
});
if (captureRenderTarget && view.renderTarget == null) {
throw Exception();
if (beginFrame) {
final views = <FFIView>[];
if (view != null) {
views.add(view);
} else {
views.addAll(_swapChains[swapChain]!.where((v) => v.renderable));
}
await withVoidCallback((requestId, cb) {
Renderer_readPixelsRenderThread(
_logger.info("Capturing ${views.length} views");
for (final view in views) {
beforeRender?.call(view);
final viewport = await view.getViewport();
int numChannels = switch (pixelDataFormat) {
PixelDataFormat.RGBA => 4,
PixelDataFormat.RGB => 3,
_ => throw UnsupportedError(pixelDataFormat.toString())
};
int channelSizeInBytes = switch (pixelDataType) {
PixelDataType.FLOAT => sizeOf<Float>(),
PixelDataType.UBYTE || PixelDataType.BYTE => 1,
_ => throw UnsupportedError(pixelDataFormat.toString())
};
final pixelBuffer = Uint8List(viewport.width *
viewport.height *
numChannels *
channelSizeInBytes);
await withVoidCallback((requestId, cb) {
Renderer_renderRenderThread(
renderer,
view.view,
view.renderTarget == null
? nullptr
: view.renderTarget!.renderTarget,
// TPixelDataFormat.PIXELDATAFORMAT_RGBA,
// TPixelDataType.PIXELDATATYPE_UBYTE,
// TPixelDataFormat.fromValue(pixelDataFormat.value),
// TPixelDataType.fromValue(pixelDataType.value),
pixelDataFormat.value,
pixelDataType.value,
pixelBuffer.address,
pixelBuffer.length,
requestId,
cb);
});
pixelBuffers.add((view, pixelBuffer));
cb,
);
});
if (captureRenderTarget && view.renderTarget == null) {
throw Exception();
}
await withVoidCallback((requestId, cb) {
Renderer_readPixelsRenderThread(
renderer,
view.view,
view.renderTarget == null
? nullptr
: view.renderTarget!.renderTarget,
// TPixelDataFormat.PIXELDATAFORMAT_RGBA,
// TPixelDataType.PIXELDATATYPE_UBYTE,
// TPixelDataFormat.fromValue(pixelDataFormat.value),
// TPixelDataType.fromValue(pixelDataType.value),
pixelDataFormat.value,
pixelDataType.value,
pixelBuffer.address,
pixelBuffer.length,
requestId,
cb);
});
pixelBuffers.add((view, pixelBuffer));
}
} else {
_logger.severe("beginFrame returned false");
}
await withVoidCallback((requestId, cb) {
Renderer_endFrameRenderThread(renderer, requestId, cb);
});
await withVoidCallback((requestId, cb) {
if (FILAMENT_SINGLE_THREADED) {
Engine_executeRenderThread(engine, requestId, cb);
} else {
Engine_flushAndWaitRenderThread(engine, requestId, cb);
}
});
await flush();
return pixelBuffers;
}