f0f02dff5c
Textures, FrameBuffers and VertexBuffers allocated by the Sdl2 Renderer were only being released via finalizers. This could lead to OpenGL out of memory errors since resources may not be cleaned up in a timely manner. To avoid this, IDisposable has been implemented and transitively applied to classes that use these resources. As a side-effect some static state is no longer static, particularly in Renderer, in order to facilitate this change and just for nicer design in general. Also dispose some bitmaps.
116 lines
2.8 KiB
C#
116 lines
2.8 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation. For more information,
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* see COPYING.
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*/
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#endregion
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using System;
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using System.Drawing;
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namespace OpenRA.Graphics
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{
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public class LineRenderer : Renderer.IBatchRenderer
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{
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static float2 offset = new float2(0.5f, 0.5f);
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float lineWidth = 1f;
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Renderer renderer;
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IShader shader;
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readonly Vertex[] vertices;
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int nv = 0;
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public LineRenderer(Renderer renderer, IShader shader)
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{
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this.renderer = renderer;
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this.shader = shader;
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vertices = new Vertex[renderer.TempBufferSize];
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}
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public float LineWidth
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{
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get { return lineWidth; }
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set
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{
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if (LineWidth != value)
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Flush();
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lineWidth = value;
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}
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}
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public void Flush()
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{
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if (nv > 0)
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{
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renderer.Device.SetBlendMode(BlendMode.Alpha);
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shader.Render(() =>
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{
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var vb = renderer.GetTempVertexBuffer();
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vb.SetData(vertices, nv);
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renderer.SetLineWidth(LineWidth);
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renderer.DrawBatch(vb, 0, nv, PrimitiveType.LineList);
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});
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renderer.Device.SetBlendMode(BlendMode.None);
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nv = 0;
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}
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}
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public void DrawRect(float2 tl, float2 br, Color c)
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{
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var tr = new float2(br.X, tl.Y);
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var bl = new float2(tl.X, br.Y);
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DrawLine(tl, tr, c, c);
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DrawLine(tl, bl, c, c);
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DrawLine(tr, br, c, c);
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DrawLine(bl, br, c, c);
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}
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public void DrawLine(float2 start, float2 end, Color startColor, Color endColor)
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{
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renderer.CurrentBatchRenderer = this;
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if (nv + 2 > renderer.TempBufferSize)
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Flush();
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vertices[nv++] = new Vertex(start + offset,
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startColor.R / 255.0f, startColor.G / 255.0f,
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startColor.B / 255.0f, startColor.A / 255.0f);
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vertices[nv++] = new Vertex(end + offset,
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endColor.R / 255.0f, endColor.G / 255.0f,
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endColor.B / 255.0f, endColor.A / 255.0f);
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}
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public void FillRect(RectangleF r, Color color)
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{
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for (var y = r.Top; y < r.Bottom; y++)
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DrawLine(new float2(r.Left, y), new float2(r.Right, y), color, color);
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}
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public void FillEllipse(RectangleF r, Color color)
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{
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var a = (r.Right - r.Left) / 2;
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var b = (r.Bottom - r.Top) / 2;
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var xc = (r.Right + r.Left) / 2;
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var yc = (r.Bottom + r.Top) / 2;
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for (var y = r.Top; y <= r.Bottom; y++)
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{
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var dx = a * (float)(Math.Sqrt(1 - (y - yc) * (y - yc) / b / b));
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DrawLine(new float2(xc - dx, y), new float2(xc + dx, y), color, color);
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}
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}
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public void SetViewportParams(Size screen, float zoom, int2 scroll)
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{
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shader.SetVec("Scroll", scroll.X, scroll.Y);
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shader.SetVec("r1", zoom*2f/screen.Width, -zoom*2f/screen.Height);
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shader.SetVec("r2", -1, 1);
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}
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}
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}
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