74 lines
1.9 KiB
C#
74 lines
1.9 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.Drawing;
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namespace OpenRA.Graphics
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{
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public class QuadRenderer : Renderer.IBatchRenderer
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{
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readonly Renderer renderer;
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readonly IShader shader;
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readonly Vertex[] vertices;
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int nv = 0;
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public QuadRenderer(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 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.DrawBatch(vb, 0, nv, PrimitiveType.QuadList);
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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 FillRect(RectangleF rect, Color color)
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{
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renderer.CurrentBatchRenderer = this;
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if (nv + 4 > renderer.TempBufferSize)
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Flush();
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var r = color.R / 255.0f;
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var g = color.G / 255.0f;
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var b = color.B / 255.0f;
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var a = color.A / 255.0f;
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vertices[nv] = new Vertex(new float2(rect.Left, rect.Top), r, g, b, a);
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vertices[nv + 1] = new Vertex(new float2(rect.Right, rect.Top), r, g, b, a);
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vertices[nv + 2] = new Vertex(new float2(rect.Right, rect.Bottom), r, g, b, a);
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vertices[nv + 3] = new Vertex(new float2(rect.Left, rect.Bottom), r, g, b, a);
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nv += 4;
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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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