Пример #1
0
        public AttributelessObject(
            RenderScene scene,
            int vertexCount,
            ReadOnlySpan <TextureInfo> textureInfos)
        {
            if (scene == null)
            {
                throw new ArgumentNullException(nameof(scene));
            }
            this.vertexCount = vertexCount;

            //Prepare the inputs
            inputs = new IShaderInput[textureInfos.Length];
            for (int i = 0; i < inputs.Length; i++)
            {
                DeviceTexture texture = DeviceTexture.UploadTexture(
                    texture: textureInfos[i].Texture as IInternalTexture,
                    scene, generateMipMaps: textureInfos[i].UseMipMaps);
                inputs[i] = new DeviceSampler(
                    scene.LogicalDevice,
                    texture,
                    disposeTexture: true,
                    repeat: textureInfos[i].Repeat,
                    maxAnisotropy: 8f);
            }
        }
        public InstancedObject(
            RenderScene scene,
            Mesh mesh,
            TextureInfo[] textureInfos,
            int maxInstances = 100_000)
        {
            if (scene == null)
            {
                throw new ArgumentNullException(nameof(scene));
            }
            if (mesh == null)
            {
                throw new ArgumentNullException(nameof(mesh));
            }

            //Prepare the inputs
            inputs = new IShaderInput[textureInfos.Length];
            for (int i = 0; i < inputs.Length; i++)
            {
                DeviceTexture texture = DeviceTexture.UploadTexture(
                    texture: textureInfos[i].Texture as IInternalTexture,
                    scene, generateMipMaps: textureInfos[i].UseMipMaps);
                inputs[i] = new DeviceSampler(
                    scene.LogicalDevice,
                    texture,
                    disposeTexture: true,
                    repeat: textureInfos[i].Repeat,
                    maxAnisotropy: 8f);
            }

            //Upload our mesh to the gpu
            deviceMesh = new DeviceMesh(mesh, scene);

            //Allocate a buffers for the instance data and indirect args
            instanceDataBuffer = new Memory.HostBuffer(
                logicalDevice: scene.LogicalDevice,
                memoryPool: scene.MemoryPool,
                usages: BufferUsages.VertexBuffer,
                size: InstanceData.SIZE * maxInstances);
            indirectArgumentsBuffer = new Memory.HostBuffer(
                logicalDevice: scene.LogicalDevice,
                memoryPool: scene.MemoryPool,
                usages: BufferUsages.IndirectBuffer,
                size: DrawIndexedIndirectCommand.SIZE);

            //Write defaults to the indirect args buffer
            indirectArgumentsBuffer.Write(new DrawIndexedIndirectCommand(
                                              indexCount: (uint)deviceMesh.IndexCount,
                                              instanceCount: 0, firstIndex: 0, vertexOffset: 0, firstInstance: 0));
        }