private void DrawGpuTextureWithOldDesc(Action <SKSurface, GRBackendTextureDesc> draw)
{
using (var ctx = CreateGlContext())
{
ctx.MakeCurrent();
// create the texture
var textureInfo = ctx.CreateTexture(new SKSizeI(100, 100));
var oldInfo = new GRTextureInfoOld
{
Id = textureInfo.Id,
Target = textureInfo.Target
};
var textureHandle = GCHandle.Alloc(oldInfo, GCHandleType.Pinned);
var textureDesc = new GRBackendTextureDesc
{
Width = 100,
Height = 100,
Config = GRPixelConfig.Rgba8888,
Flags = GRBackendTextureDescFlags.RenderTarget,
Origin = GRSurfaceOrigin.BottomLeft,
SampleCount = 0,
TextureHandle = textureHandle.AddrOfPinnedObject(),
};
// create the surface
using (var grContext = GRContext.Create(GRBackend.OpenGL))
using (var surface = SKSurface.CreateAsRenderTarget(grContext, textureDesc))
{
Assert.NotNull(surface);
draw(surface, textureDesc);
}
// clean up
textureHandle.Free();
ctx.DestroyTexture(textureInfo.Id);
}
}
public void CanConvertFromPointerToDescToTexture()
{
// the custom struct to contain the info
var oldInfo = new GRTextureInfoOld
{
Id = 123,
Target = 456
};
// pin it for the native code
var textureHandle = GCHandle.Alloc(oldInfo, GCHandleType.Pinned);
// use the very old desc
var textureDesc = new GRBackendTextureDesc
{
Width = 100,
Height = 100,
Config = GRPixelConfig.Rgba8888,
Flags = GRBackendTextureDescFlags.RenderTarget,
Origin = GRSurfaceOrigin.BottomLeft,
SampleCount = 246,
TextureHandle = textureHandle.AddrOfPinnedObject(),
};
// create the new texture
var texture = new GRBackendTexture(textureDesc);
// free up all resourcess
textureHandle.Free();
// make sure we kept the information
Assert.Equal(100, texture.Width);
Assert.Equal(100, texture.Height);
var newInfo = texture.GetGlTextureInfo();
Assert.Equal(oldInfo.Id, newInfo.Id);
Assert.Equal(oldInfo.Target, newInfo.Target);
Assert.Equal(GRPixelConfig.Rgba8888.ToGlSizedFormat(), newInfo.Format);
}
