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[KMS] Improved GBM surface format selection

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This commit is contained in:
thefiddler 2014-06-25 09:11:47 +02:00
parent 6454822116
commit f9d20b5e3e
1 changed files with 30 additions and 20 deletions
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50
Source/OpenTK/Platform/Linux/LinuxNativeWindow.cs
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@ -65,28 +65,25 @@ namespace OpenTK.Platform.Linux
}
Debug.Print("[KMS] Selected EGL mode {0}", mode);
unsafe
SurfaceFormat format = GetSurfaceFormat(display, mode);
SurfaceFlags usage = SurfaceFlags.Rendering | SurfaceFlags.Scanout;
if (!Gbm.IsFormatSupported(gbm, format, usage))
{
SurfaceFormat format = GetSurfaceFormat(mode);
SurfaceFlags usage = SurfaceFlags.Rendering | SurfaceFlags.Scanout;
if (!Gbm.IsFormatSupported(gbm, format, usage))
{
format = SurfaceFormat.XBGR8888;
}
Debug.Print("[KMS] Creating GBM surface on {0:x} with {1}x{2} {3} {4}",
gbm, width, height, format, usage);
IntPtr gbm_surface = Gbm.CreateSurface(gbm,
width, height, format, usage);
if (gbm_surface == IntPtr.Zero)
{
throw new NotSupportedException("[KMS] Failed to create GBM surface for rendering");
}
window.Handle = gbm_surface;
Debug.Print("[KMS] Created GBM surface {0:x}", window.Handle);
//format = SurfaceFormat.xrgba;
}
Debug.Print("[KMS] Creating GBM surface on {0:x} with {1}x{2} {3} [{4}]",
gbm, width, height, format, usage);
IntPtr gbm_surface = Gbm.CreateSurface(gbm,
width, height, format, usage);
if (gbm_surface == IntPtr.Zero)
{
throw new NotSupportedException("[KMS] Failed to create GBM surface for rendering");
}
window.Handle = gbm_surface;
Debug.Print("[KMS] Created GBM surface {0:x}", window.Handle);
window.CreateWindowSurface(mode.Index.Value);
Debug.Print("[KMS] Created EGL surface {0:x}", window.Surface);
@ -94,8 +91,21 @@ namespace OpenTK.Platform.Linux
exists = true;
}
SurfaceFormat GetSurfaceFormat(GraphicsMode mode)
SurfaceFormat GetSurfaceFormat(IntPtr display, GraphicsMode mode)
{
// Use EGL 1.4 EGL_NATIVE_VISUAL_ID to retrieve
// the corresponding surface format. If that fails
// fall back to a manual algorithm.
int format;
Egl.GetConfigAttrib(display, mode.Index.Value,
Egl.NATIVE_VISUAL_ID, out format);
if ((SurfaceFormat)format != 0)
return (SurfaceFormat)format;
Debug.Print("[KMS] Failed to retrieve EGL visual from GBM surface. Error: {0}",
Egl.GetError());
Debug.Print("[KMS] Falling back to hardcoded formats.");
int r = mode.ColorFormat.Red;
int g = mode.ColorFormat.Green;
int b = mode.ColorFormat.Blue;