| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| import 'dart:typed_data'; |
| import 'dart:ui' as ui; |
| import '../../lib/gpu/lib/gpu.dart' as gpu; |
| |
| void main() {} |
| |
| @pragma('vm:entry-point') |
| void sayHi() { |
| print('Hi'); |
| } |
| |
| @pragma('vm:entry-point') |
| void instantiateDefaultContext() { |
| // ignore: unused_local_variable |
| final gpu.GpuContext context = gpu.gpuContext; |
| } |
| |
| @pragma('vm:entry-point') |
| void canEmplaceHostBuffer() { |
| final gpu.HostBuffer hostBuffer = gpu.HostBuffer(); |
| |
| final gpu.BufferView view0 = hostBuffer |
| .emplace(Int8List.fromList(<int>[0, 1, 2, 3]).buffer.asByteData()); |
| assert(view0.offsetInBytes == 0); |
| assert(view0.lengthInBytes == 4); |
| |
| final gpu.BufferView view1 = hostBuffer |
| .emplace(Int8List.fromList(<int>[0, 1, 2, 3]).buffer.asByteData()); |
| assert(view1.offsetInBytes >= 4); |
| assert(view1.lengthInBytes == 4); |
| } |
| |
| @pragma('vm:entry-point') |
| void canCreateDeviceBuffer() { |
| final gpu.DeviceBuffer? deviceBuffer = |
| gpu.gpuContext.createDeviceBuffer(gpu.StorageMode.hostVisible, 4); |
| assert(deviceBuffer != null); |
| assert(deviceBuffer!.sizeInBytes == 4); |
| } |
| |
| @pragma('vm:entry-point') |
| void canOverwriteDeviceBuffer() { |
| final gpu.DeviceBuffer? deviceBuffer = |
| gpu.gpuContext.createDeviceBuffer(gpu.StorageMode.hostVisible, 4); |
| assert(deviceBuffer != null); |
| final bool success = deviceBuffer! |
| .overwrite(Int8List.fromList(<int>[0, 1, 2, 3]).buffer.asByteData()); |
| assert(success); |
| } |
| |
| @pragma('vm:entry-point') |
| void deviceBufferOverwriteFailsWhenOutOfBounds() { |
| final gpu.DeviceBuffer? deviceBuffer = |
| gpu.gpuContext.createDeviceBuffer(gpu.StorageMode.hostVisible, 4); |
| assert(deviceBuffer != null); |
| final bool success = deviceBuffer!.overwrite( |
| Int8List.fromList(<int>[0, 1, 2, 3]).buffer.asByteData(), |
| destinationOffsetInBytes: 1); |
| assert(!success); |
| } |
| |
| @pragma('vm:entry-point') |
| void deviceBufferOverwriteThrowsForNegativeDestinationOffset() { |
| final gpu.DeviceBuffer? deviceBuffer = |
| gpu.gpuContext.createDeviceBuffer(gpu.StorageMode.hostVisible, 4); |
| assert(deviceBuffer != null); |
| String? exception; |
| try { |
| deviceBuffer!.overwrite( |
| Int8List.fromList(<int>[0, 1, 2, 3]).buffer.asByteData(), |
| destinationOffsetInBytes: -1); |
| } catch (e) { |
| exception = e.toString(); |
| } |
| assert(exception!.contains('destinationOffsetInBytes must be positive')); |
| } |
| |
| @pragma('vm:entry-point') |
| void canCreateTexture() { |
| final gpu.Texture? texture = |
| gpu.gpuContext.createTexture(gpu.StorageMode.hostVisible, 100, 100); |
| assert(texture != null); |
| |
| // Check the defaults. |
| assert( |
| texture!.coordinateSystem == gpu.TextureCoordinateSystem.renderToTexture); |
| assert(texture!.width == 100); |
| assert(texture!.height == 100); |
| assert(texture!.storageMode == gpu.StorageMode.hostVisible); |
| assert(texture!.sampleCount == 1); |
| assert(texture!.format == gpu.PixelFormat.r8g8b8a8UNormInt); |
| assert(texture!.enableRenderTargetUsage == true); |
| assert(texture!.enableShaderReadUsage == true); |
| assert(texture!.enableShaderWriteUsage == false); |
| assert(texture!.bytesPerTexel == 4); |
| assert(texture!.GetBaseMipLevelSizeInBytes() == 40000); |
| } |
| |
| @pragma('vm:entry-point') |
| void canOverwriteTexture() { |
| final gpu.Texture? texture = |
| gpu.gpuContext.createTexture(gpu.StorageMode.hostVisible, 2, 2); |
| assert(texture != null); |
| final ui.Color red = ui.Color.fromARGB(0xFF, 0xFF, 0, 0); |
| final ui.Color green = ui.Color.fromARGB(0xFF, 0, 0xFF, 0); |
| final bool success = texture!.overwrite( |
| Int32List.fromList(<int>[red.value, green.value, green.value, red.value]) |
| .buffer |
| .asByteData()); |
| assert(success); |
| } |
| |
| @pragma('vm:entry-point') |
| void textureOverwriteThrowsForWrongBufferSize() { |
| final gpu.Texture? texture = |
| gpu.gpuContext.createTexture(gpu.StorageMode.hostVisible, 100, 100); |
| assert(texture != null); |
| final ui.Color red = ui.Color.fromARGB(0xFF, 0xFF, 0, 0); |
| String? exception; |
| try { |
| texture!.overwrite( |
| Int32List.fromList(<int>[red.value, red.value, red.value, red.value]) |
| .buffer |
| .asByteData()); |
| } catch (e) { |
| exception = e.toString(); |
| } |
| assert(exception!.contains( |
| 'The length of sourceBytes (bytes: 16) must exactly match the size of the base mip level (bytes: 40000)')); |
| } |
| |
| @pragma('vm:entry-point') |
| void textureAsImageReturnsAValidUIImageHandle() { |
| final gpu.Texture? texture = |
| gpu.gpuContext.createTexture(gpu.StorageMode.hostVisible, 100, 100); |
| assert(texture != null); |
| |
| final ui.Image image = texture!.asImage(); |
| assert(image.width == 100); |
| assert(image.height == 100); |
| } |
| |
| @pragma('vm:entry-point') |
| void textureAsImageThrowsWhenNotShaderReadable() { |
| final gpu.Texture? texture = gpu.gpuContext.createTexture( |
| gpu.StorageMode.hostVisible, 100, 100, |
| enableShaderReadUsage: false); |
| assert(texture != null); |
| String? exception; |
| try { |
| texture!.asImage(); |
| } catch (e) { |
| exception = e.toString(); |
| } |
| assert(exception!.contains( |
| 'Only shader readable Flutter GPU textures can be used as UI Images')); |
| } |