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Replace MiniTK.Graphics with custom OpenGL shim.

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This commit is contained in:
Paul Chote
2015-12-26 13:49:28 +00:00
parent 4660b7156d
commit 397ca0f481
8 changed files with 614 additions and 171 deletions
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46
OpenRA.Platforms.Default/FrameBuffer.cs
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@@ -12,7 +12,6 @@ using System;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using OpenTK.Graphics.OpenGL;
namespace OpenRA.Platforms.Default
{
@@ -20,7 +19,7 @@ namespace OpenRA.Platforms.Default
{
readonly Texture texture;
readonly Size size;
int framebuffer, depth;
uint framebuffer, depth;
bool disposed;
public FrameBuffer(Size size)
@@ -29,33 +28,33 @@ namespace OpenRA.Platforms.Default
if (!Exts.IsPowerOf2(size.Width) || !Exts.IsPowerOf2(size.Height))
throw new InvalidDataException("Frame buffer size ({0}x{1}) must be a power of two".F(size.Width, size.Height));
GL.Ext.GenFramebuffers(1, out framebuffer);
OpenGL.glGenFramebuffersEXT(1, out framebuffer);
ErrorHandler.CheckGlError();
GL.Ext.BindFramebuffer(FramebufferTarget.FramebufferExt, framebuffer);
OpenGL.glBindFramebufferEXT(OpenGL.FRAMEBUFFER_EXT, framebuffer);
ErrorHandler.CheckGlError();
// Color
texture = new Texture();
texture.SetEmpty(size.Width, size.Height);
GL.Ext.FramebufferTexture2D(FramebufferTarget.FramebufferExt, FramebufferAttachment.ColorAttachment0Ext, TextureTarget.Texture2D, texture.ID, 0);
OpenGL.glFramebufferTexture2DEXT(OpenGL.FRAMEBUFFER_EXT, OpenGL.COLOR_ATTACHMENT0_EXT, OpenGL.GL_TEXTURE_2D, texture.ID, 0);
ErrorHandler.CheckGlError();
// Depth
GL.Ext.GenRenderbuffers(1, out depth);
OpenGL.glGenRenderbuffersEXT(1, out depth);
ErrorHandler.CheckGlError();
GL.Ext.BindRenderbuffer(RenderbufferTarget.RenderbufferExt, depth);
OpenGL.glBindRenderbufferEXT(OpenGL.RENDERBUFFER_EXT, depth);
ErrorHandler.CheckGlError();
GL.Ext.RenderbufferStorage(RenderbufferTarget.RenderbufferExt, RenderbufferStorage.DepthComponent, size.Width, size.Height);
OpenGL.glRenderbufferStorageEXT(OpenGL.RENDERBUFFER_EXT, OpenGL.GL_DEPTH_COMPONENT, size.Width, size.Height);
ErrorHandler.CheckGlError();
GL.Ext.FramebufferRenderbuffer(FramebufferTarget.FramebufferExt, FramebufferAttachment.DepthAttachmentExt, RenderbufferTarget.RenderbufferExt, depth);
OpenGL.glFramebufferRenderbufferEXT(OpenGL.FRAMEBUFFER_EXT, OpenGL.DEPTH_ATTACHMENT_EXT, OpenGL.RENDERBUFFER_EXT, depth);
ErrorHandler.CheckGlError();
// Test for completeness
var status = GL.Ext.CheckFramebufferStatus(FramebufferTarget.FramebufferExt);
if (status != FramebufferErrorCode.FramebufferCompleteExt)
var status = OpenGL.glCheckFramebufferStatus(OpenGL.FRAMEBUFFER_EXT);
if (status != OpenGL.FRAMEBUFFER_COMPLETE_EXT)
{
var error = "Error creating framebuffer: {0}\n{1}".F(status, new StackTrace());
ErrorHandler.WriteGraphicsLog(error);
@@ -63,7 +62,7 @@ namespace OpenRA.Platforms.Default
}
// Restore default buffer
GL.Ext.BindFramebuffer(FramebufferTarget.FramebufferExt, 0);
OpenGL.glBindFramebufferEXT(OpenGL.FRAMEBUFFER_EXT, 0);
ErrorHandler.CheckGlError();
}
@@ -73,7 +72,7 @@ namespace OpenRA.Platforms.Default
unsafe
{
fixed (int* ptr = &v[0])
GL.GetInteger(GetPName.Viewport, ptr);
OpenGL.glGetIntegerv(OpenGL.GL_VIEWPORT, ptr);
}
ErrorHandler.CheckGlError();
@@ -88,26 +87,26 @@ namespace OpenRA.Platforms.Default
// Cache viewport rect to restore when unbinding
cv = ViewportRectangle();
GL.Flush();
OpenGL.glFlush();
ErrorHandler.CheckGlError();
GL.Ext.BindFramebuffer(FramebufferTarget.FramebufferExt, framebuffer);
OpenGL.glBindFramebufferEXT(OpenGL.FRAMEBUFFER_EXT, framebuffer);
ErrorHandler.CheckGlError();
GL.Viewport(0, 0, size.Width, size.Height);
OpenGL.glViewport(0, 0, size.Width, size.Height);
ErrorHandler.CheckGlError();
GL.ClearColor(0, 0, 0, 0);
OpenGL.glClearColor(0, 0, 0, 0);
ErrorHandler.CheckGlError();
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
OpenGL.glClear(OpenGL.GL_COLOR_BUFFER_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);
ErrorHandler.CheckGlError();
}
public void Unbind()
{
VerifyThreadAffinity();
GL.Flush();
OpenGL.glFlush();
ErrorHandler.CheckGlError();
GL.Ext.BindFramebuffer(FramebufferTarget.FramebufferExt, 0);
OpenGL.glBindFramebufferEXT(OpenGL.FRAMEBUFFER_EXT, 0);
ErrorHandler.CheckGlError();
GL.Viewport(cv[0], cv[1], cv[2], cv[3]);
OpenGL.glViewport(cv[0], cv[1], cv[2], cv[3]);
ErrorHandler.CheckGlError();
}
@@ -138,9 +137,10 @@ namespace OpenRA.Platforms.Default
disposed = true;
if (disposing)
texture.Dispose();
GL.Ext.DeleteFramebuffers(1, ref framebuffer);
OpenGL.glDeleteFramebuffersEXT(1, ref framebuffer);
ErrorHandler.CheckGlError();
GL.Ext.DeleteRenderbuffers(1, ref depth);
OpenGL.glDeleteRenderbuffersEXT(1, ref depth);
ErrorHandler.CheckGlError();
}
}