220 lines
9.3 KiB
C#
220 lines
9.3 KiB
C#
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/*
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* Copyright (c) 2007-2009 SlimDX Group
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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using System;
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using System.Collections.Generic;
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using System.Reflection;
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using System.Runtime.InteropServices;
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using System.Security.Permissions;
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using SlimDX;
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using SlimDX.Direct3D9;
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namespace SampleFramework
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{
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/// <summary>
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/// Manages aspects of the graphics device unique to Direct3D9.
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/// </summary>
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public class Direct3D9Manager
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{
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GraphicsDeviceManager manager;
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/// <summary>
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/// Gets the graphics device.
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/// </summary>
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/// <value>The graphics device.</value>
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#if TEST_Direct3D9Ex
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public DeviceEx Device //yyagi
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#else
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public DeviceCache Device
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#endif
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{
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get;
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internal set;
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="Direct3D9Manager"/> class.
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/// </summary>
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/// <param name="manager">The parent manager.</param>
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internal Direct3D9Manager(GraphicsDeviceManager manager)
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{
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this.manager = manager;
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}
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/// <summary>
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/// Creates a vertex declaration using the specified vertex type.
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/// </summary>
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/// <param name="vertexType">Type of the vertex.</param>
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/// <returns>The vertex declaration for the specified vertex type.</returns>
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[EnvironmentPermission(SecurityAction.LinkDemand)]
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public VertexDeclaration CreateVertexDeclaration(Type vertexType)
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{
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// ensure that we have a value type
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if (!vertexType.IsValueType)
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throw new InvalidOperationException("Vertex types must be value types.");
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// grab the list of elements in the vertex
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List<VertexElementAttribute> objectAttributes = new List<VertexElementAttribute>();
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FieldInfo[] fields = vertexType.GetFields(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
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foreach (FieldInfo field in fields)
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{
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// check for the custom attribute
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VertexElementAttribute[] attributes = (VertexElementAttribute[])field.GetCustomAttributes(typeof(VertexElementAttribute), false);
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if (field.Name.Contains("<") && field.Name.Contains(">"))
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{
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// look up the property matching this field to see if it has the attribute
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int index1 = field.Name.IndexOf('<');
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int index2 = field.Name.IndexOf('>');
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// parse out the name
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string propertyName = field.Name.Substring(index1 + 1, index2 - index1 - 1);
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PropertyInfo property = vertexType.GetProperty(propertyName, field.FieldType);
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if (property != null)
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attributes = (VertexElementAttribute[])property.GetCustomAttributes(typeof(VertexElementAttribute), false);
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}
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if (attributes.Length == 1)
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{
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// add the attribute to the list
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attributes[0].Offset = Marshal.OffsetOf(vertexType, field.Name).ToInt32();
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objectAttributes.Add(attributes[0]);
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}
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}
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// make sure we have at least one element
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if (objectAttributes.Count < 1)
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throw new InvalidOperationException("The vertex type must have at least one field or property marked with the VertexElement attribute.");
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// loop through the attributes and start building vertex elements
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List<VertexElement> elements = new List<VertexElement>();
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Dictionary<DeclarationUsage, int> usages = new Dictionary<DeclarationUsage, int>();
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foreach (VertexElementAttribute attribute in objectAttributes)
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{
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// check the current usage index
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if (!usages.ContainsKey(attribute.Usage))
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usages.Add(attribute.Usage, 0);
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// advance the current usage count
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int index = usages[attribute.Usage];
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usages[attribute.Usage]++;
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// create the element
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elements.Add(new VertexElement((short)attribute.Stream, (short)attribute.Offset, attribute.Type,
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attribute.Method, attribute.Usage, (byte)index));
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}
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elements.Add(VertexElement.VertexDeclarationEnd);
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return new VertexDeclaration(Device.UnderlyingDevice, elements.ToArray());
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}
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/// <summary>
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/// Creates a render target surface that is compatible with the current device settings.
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/// </summary>
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/// <param name="width">The width of the surface.</param>
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/// <param name="height">The height of the surface.</param>
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/// <returns>The newly created render target surface.</returns>
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public Texture CreateRenderTarget(int width, int height)
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{
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return new Texture(Device.UnderlyingDevice, width, height, 1, Usage.RenderTarget, manager.CurrentSettings.BackBufferFormat, Pool.Default);
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}
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/// <summary>
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/// Creates a resolve target for capturing the back buffer.
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/// </summary>
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/// <returns>The newly created resolve target.</returns>
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public Texture CreateResolveTarget()
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{
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return new Texture(Device.UnderlyingDevice, manager.ScreenWidth, manager.ScreenHeight, 1, Usage.RenderTarget, manager.CurrentSettings.BackBufferFormat, Pool.Default);
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}
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/// <summary>
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/// Resolves the current back buffer into a texture.
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/// </summary>
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/// <param name="target">The target texture.</param>
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/// <exception cref="InvalidOperationException">Thrown when the resolve process fails.</exception>
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public void ResolveBackBuffer(Texture target)
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{
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ResolveBackBuffer(target, 0);
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}
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/// <summary>
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/// Resolves the current back buffer into a texture.
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/// </summary>
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/// <param name="target">The target texture.</param>
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/// <param name="backBufferIndex">The index of the back buffer.</param>
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/// <exception cref="InvalidOperationException">Thrown when the resolve process fails.</exception>
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public void ResolveBackBuffer(Texture target, int backBufferIndex)
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{
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// disable exceptions for this method
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bool storedThrow = Configuration.ThrowOnError;
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Configuration.ThrowOnError = false;
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Surface destination = null;
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try
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{
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// grab the current back buffer
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Surface backBuffer = Device.GetBackBuffer(0, backBufferIndex);
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if (backBuffer == null || Result.Last.IsFailure)
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throw new InvalidOperationException("Could not obtain back buffer surface.");
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// grab the destination surface
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destination = target.GetSurfaceLevel(0);
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if (destination == null || Result.Last.IsFailure)
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throw new InvalidOperationException("Could not obtain resolve target surface.");
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// first try to copy using linear filtering
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if (Device.StretchRectangle(backBuffer, destination, TextureFilter.Linear).IsFailure)
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{
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// that failed, so try with no filtering
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if (Device.StretchRectangle(backBuffer, destination, TextureFilter.None).IsFailure)
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{
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// that failed as well, so the last thing we can try is a load surface call
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if (Surface.FromSurface(destination, backBuffer, Filter.Default, 0).IsFailure)
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throw new InvalidOperationException("Could not copy surfaces.");
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}
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}
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}
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finally
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{
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if (destination != null)
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destination.Dispose();
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Configuration.ThrowOnError = storedThrow;
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}
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}
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/// <summary>
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/// Resets the render target.
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/// </summary>
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public void ResetRenderTarget()
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{
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Surface backBuffer = Device.GetBackBuffer(0, 0);
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try
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{
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Device.SetRenderTarget(0, backBuffer);
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}
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finally
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{
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backBuffer.Dispose();
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}
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}
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}
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}
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