internal void RenderFrame()
{
if (!jsInfo.IsValid)
{
return;
}
// create the SkiaSharp context
if (context == null)
{
glInterface = GRGlInterface.Create();
context = GRContext.CreateGl(glInterface);
// bump the default resource cache limit
context.SetResourceCacheLimit(ResourceCacheBytes);
}
// get the new surface size
var newSize = new SKSizeI((int)(ActualWidth * ContentsScale), (int)(ActualHeight * ContentsScale));
// manage the drawing surface
if (renderTarget == null || lastSize != newSize || !renderTarget.IsValid)
{
// create or update the dimensions
lastSize = newSize;
glInfo = new GRGlFramebufferInfo(jsInfo.FboId, colorType.ToGlSizedFormat());
// destroy the old surface
surface?.Dispose();
surface = null;
canvas = null;
// re-create the render target
renderTarget?.Dispose();
renderTarget = new GRBackendRenderTarget(newSize.Width, newSize.Height, jsInfo.Samples, jsInfo.Stencil, glInfo);
}
// create the surface
if (surface == null)
{
surface = SKSurface.Create(context, renderTarget, surfaceOrigin, colorType);
canvas = surface.Canvas;
}
using (new SKAutoCanvasRestore(canvas, true))
{
// start drawing
#pragma warning disable CS0612 // Type or member is obsolete
OnPaintSurface(new SKPaintGLSurfaceEventArgs(surface, renderTarget, surfaceOrigin, colorType, glInfo));
#pragma warning restore CS0612 // Type or member is obsolete
}
// update the control
canvas.Flush();
context.Flush();
}
public GlSkiaGpu(IWindowingPlatformGlFeature gl, long?maxResourceBytes)
{
var context = gl.MainContext;
using (context.MakeCurrent())
{
using (var iface = context.Version.Type == GlProfileType.OpenGL ?
GRGlInterface.CreateOpenGl(proc => context.GlInterface.GetProcAddress(proc)) :
GRGlInterface.CreateGles(proc => context.GlInterface.GetProcAddress(proc)))
{
_grContext = GRContext.CreateGl(iface);
if (maxResourceBytes.HasValue)
{
_grContext.SetResourceCacheLimit(maxResourceBytes.Value);
}
}
}
}
public GlSkiaGpu(IPlatformOpenGlInterface openGl, long?maxResourceBytes)
{
var context = openGl.PrimaryContext;
_glContext = context;
using (context.MakeCurrent())
{
using (var iface = context.Version.Type == GlProfileType.OpenGL ?
GRGlInterface.CreateOpenGl(proc => context.GlInterface.GetProcAddress(proc)) :
GRGlInterface.CreateGles(proc => context.GlInterface.GetProcAddress(proc)))
{
_grContext = GRContext.CreateGl(iface, new GRContextOptions {
AvoidStencilBuffers = true
});
if (maxResourceBytes.HasValue)
{
_grContext.SetResourceCacheLimit(maxResourceBytes.Value);
}
}
}
}
private void Initialize()
{
GRVkGetProcedureAddressDelegate getProc = GetVulkanProcAddress;
_grVkBackend = new GRVkBackendContext()
{
VkInstance = _surface.Device.Handle,
VkPhysicalDevice = _vulkanPlatformInterface.PhysicalDevice.Handle,
VkDevice = _surface.Device.Handle,
VkQueue = _surface.Device.Queue.Handle,
GraphicsQueueIndex = _vulkanPlatformInterface.PhysicalDevice.QueueFamilyIndex,
GetProcedureAddress = getProc
};
GrContext = GRContext.CreateVulkan(_grVkBackend);
var gpu = AvaloniaLocator.Current.GetService <VulkanSkiaGpu>();
if (gpu.MaxResourceBytes.HasValue)
{
GrContext.SetResourceCacheLimit(gpu.MaxResourceBytes.Value);
}
}