Initial commit: OpenRA game engine
Fork from OpenRA/OpenRA with one-click launch script (start-ra.cmd) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
let5sne.win10
209
OpenRA.Platforms.Default/Texture.cs
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209
OpenRA.Platforms.Default/Texture.cs
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#region Copyright & License Information
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/*
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* Copyright (c) The OpenRA Developers and Contributors
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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, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System;
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using System.IO;
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using OpenRA.Primitives;
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namespace OpenRA.Platforms.Default
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{
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sealed class Texture : ThreadAffine, ITextureInternal
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{
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uint texture;
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TextureScaleFilter scaleFilter;
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public uint ID => texture;
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public Size Size { get; private set; }
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bool disposed;
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public TextureScaleFilter ScaleFilter
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{
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get => scaleFilter;
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set
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{
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VerifyThreadAffinity();
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if (scaleFilter == value)
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return;
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scaleFilter = value;
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PrepareTexture();
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}
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}
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public Texture()
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{
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OpenGL.glGenTextures(1, out texture);
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OpenGL.CheckGLError();
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}
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void PrepareTexture()
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{
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OpenGL.CheckGLError();
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OpenGL.glBindTexture(OpenGL.GL_TEXTURE_2D, texture);
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OpenGL.CheckGLError();
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var filter = scaleFilter == TextureScaleFilter.Linear ? OpenGL.GL_LINEAR : OpenGL.GL_NEAREST;
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OpenGL.glTexParameteri(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MAG_FILTER, filter);
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OpenGL.CheckGLError();
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OpenGL.glTexParameteri(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MIN_FILTER, filter);
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OpenGL.CheckGLError();
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OpenGL.glTexParameterf(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_S, OpenGL.GL_CLAMP_TO_EDGE);
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OpenGL.CheckGLError();
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OpenGL.glTexParameterf(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_WRAP_T, OpenGL.GL_CLAMP_TO_EDGE);
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OpenGL.CheckGLError();
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OpenGL.glTexParameteri(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_BASE_LEVEL, 0);
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OpenGL.CheckGLError();
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OpenGL.glTexParameteri(OpenGL.GL_TEXTURE_2D, OpenGL.GL_TEXTURE_MAX_LEVEL, 0);
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OpenGL.CheckGLError();
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}
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void SetData(IntPtr data, int width, int height)
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{
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PrepareTexture();
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var glInternalFormat = OpenGL.Profile == GLProfile.Embedded ? OpenGL.GL_BGRA : OpenGL.GL_RGBA8;
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OpenGL.glTexImage2D(OpenGL.GL_TEXTURE_2D, 0, glInternalFormat, width, height,
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0, OpenGL.GL_BGRA, OpenGL.GL_UNSIGNED_BYTE, data);
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OpenGL.CheckGLError();
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}
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public void SetData(byte[] colors, int width, int height)
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{
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VerifyThreadAffinity();
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if (!Exts.IsPowerOf2(width) || !Exts.IsPowerOf2(height))
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throw new InvalidDataException($"Non-power-of-two array {width}x{height}");
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Size = new Size(width, height);
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unsafe
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{
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fixed (byte* ptr = &colors[0])
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SetData(new IntPtr(ptr), width, height);
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}
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}
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public void SetFloatData(float[] data, int width, int height)
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{
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VerifyThreadAffinity();
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if (!Exts.IsPowerOf2(width) || !Exts.IsPowerOf2(height))
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throw new InvalidDataException($"Non-power-of-two array {width}x{height}");
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Size = new Size(width, height);
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unsafe
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{
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fixed (float* ptr = &data[0])
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{
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PrepareTexture();
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OpenGL.glTexImage2D(OpenGL.GL_TEXTURE_2D, 0, OpenGL.GL_RGBA16F, width, height,
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0, OpenGL.GL_RGBA, OpenGL.GL_FLOAT, new IntPtr(ptr));
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OpenGL.CheckGLError();
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}
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}
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}
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public void SetDataFromReadBuffer(Rectangle rect)
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{
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VerifyThreadAffinity();
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if (!Exts.IsPowerOf2(rect.Width) || !Exts.IsPowerOf2(rect.Height))
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throw new InvalidDataException($"Non-power-of-two rectangle {rect.Width}x{rect.Height}");
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PrepareTexture();
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var glInternalFormat = OpenGL.Profile == GLProfile.Embedded ? OpenGL.GL_BGRA : OpenGL.GL_RGBA8;
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OpenGL.glCopyTexImage2D(OpenGL.GL_TEXTURE_2D, 0, glInternalFormat, rect.X, rect.Y, rect.Width, rect.Height, 0);
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OpenGL.CheckGLError();
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}
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public byte[] GetData()
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{
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VerifyThreadAffinity();
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var data = new byte[4 * Size.Width * Size.Height];
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// GLES doesn't support glGetTexImage so data must be read back via a frame buffer
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if (OpenGL.Profile == GLProfile.Embedded)
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{
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// Query the active framebuffer so we can restore it afterwards
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OpenGL.glGetIntegerv(OpenGL.GL_FRAMEBUFFER_BINDING, out var lastFramebuffer);
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OpenGL.glGenFramebuffers(1, out var framebuffer);
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OpenGL.glBindFramebuffer(OpenGL.GL_FRAMEBUFFER, framebuffer);
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OpenGL.CheckGLError();
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OpenGL.glFramebufferTexture2D(OpenGL.GL_FRAMEBUFFER, OpenGL.GL_COLOR_ATTACHMENT0, OpenGL.GL_TEXTURE_2D, texture, 0);
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OpenGL.CheckGLError();
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var canReadBGRA = OpenGL.Features.HasFlag(OpenGL.GLFeatures.ESReadFormatBGRA);
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unsafe
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{
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fixed (byte* ptr = &data[0])
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{
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var intPtr = new IntPtr(ptr);
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var format = canReadBGRA ? OpenGL.GL_BGRA : OpenGL.GL_RGBA;
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OpenGL.glReadPixels(0, 0, Size.Width, Size.Height, format, OpenGL.GL_UNSIGNED_BYTE, intPtr);
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OpenGL.CheckGLError();
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}
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}
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// Convert RGBA to BGRA
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if (!canReadBGRA)
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{
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for (var i = 0; i < 4 * Size.Width * Size.Height; i += 4)
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{
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(data[i + 2], data[i]) = (data[i], data[i + 2]);
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}
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}
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OpenGL.glBindFramebuffer(OpenGL.GL_FRAMEBUFFER, (uint)lastFramebuffer);
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OpenGL.glDeleteFramebuffers(1, ref framebuffer);
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OpenGL.CheckGLError();
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}
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else
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{
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OpenGL.glBindTexture(OpenGL.GL_TEXTURE_2D, texture);
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unsafe
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{
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fixed (byte* ptr = &data[0])
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{
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var intPtr = new IntPtr(ptr);
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OpenGL.glGetTexImage(OpenGL.GL_TEXTURE_2D, 0, OpenGL.GL_BGRA,
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OpenGL.GL_UNSIGNED_BYTE, intPtr);
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}
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}
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OpenGL.CheckGLError();
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}
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return data;
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}
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public void SetEmpty(int width, int height)
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{
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VerifyThreadAffinity();
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if (!Exts.IsPowerOf2(width) || !Exts.IsPowerOf2(height))
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throw new InvalidDataException($"Non-power-of-two array {width}x{height}");
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Size = new Size(width, height);
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SetData(IntPtr.Zero, width, height);
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}
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public void Dispose()
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{
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if (disposed)
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return;
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disposed = true;
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OpenGL.glDeleteTextures(1, ref texture);
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}
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}
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}
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