public override void DrawRect(CGRect dirtyRect)
{
base.DrawRect(dirtyRect);
if (fsurface == null)
{
return;
}
var size = ConvertSizeToBacking(Bounds.Size);
renderTarget.Width = (int)size.Width;
renderTarget.Height = (int)size.Height;
Gles.glClear(Gles.GL_STENCIL_BUFFER_BIT);
using (var surface = SKSurface.Create(context, renderTarget))
{
fsurface.UpdateSurface(surface);
// draw on the surface
DrawInSurface(surface, renderTarget);
surface.Canvas.Flush();
}
// flush the SkiaSharp contents to GL
context.Flush();
OpenGLContext.FlushBuffer();
}
public virtual void SwapBuffers()
{
AssertValid();
AssertContext();
// basically SwapBuffers is the same as FlushBuffer on OSX
OpenGLContext.FlushBuffer();
}
public override void DrawRect(CGRect dirtyRect)
{
base.DrawRect(dirtyRect);
var size = ConvertSizeToBacking(Bounds.Size);
renderTarget.Width = (int)size.Width;
renderTarget.Height = (int)size.Height;
Gles.glClear(Gles.GL_STENCIL_BUFFER_BIT);
using (var surface = SKSurface.Create(context, renderTarget))
{
if (PaintSurface != null)
{
PaintSurface.Invoke(surface);
}
surface.Canvas.Flush();
}
// flush the SkiaSharp contents to GL
context.Flush();
OpenGLContext.FlushBuffer();
}
public override void DrawRect(CGRect dirtyRect)
{
base.DrawRect(dirtyRect);
Gles.glClear(Gles.GL_COLOR_BUFFER_BIT | Gles.GL_DEPTH_BUFFER_BIT | Gles.GL_STENCIL_BUFFER_BIT);
// create the render target
if (renderTarget == null || lastSize != newSize || !renderTarget.IsValid)
{
// create or update the dimensions
lastSize = newSize;
// read the info from the buffer
Gles.glGetIntegerv(Gles.GL_FRAMEBUFFER_BINDING, out var framebuffer);
Gles.glGetIntegerv(Gles.GL_STENCIL_BITS, out var stencil);
Gles.glGetIntegerv(Gles.GL_SAMPLES, out var samples);
var maxSamples = context.GetMaxSurfaceSampleCount(colorType);
if (samples > maxSamples)
{
samples = maxSamples;
}
glInfo = new GRGlFramebufferInfo((uint)framebuffer, 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, samples, 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
var e = new SKPaintGLSurfaceEventArgs(surface, renderTarget, surfaceOrigin, colorType, glInfo);
#pragma warning disable CS0618 // Type or member is obsolete
DrawInSurface(e.Surface, e.RenderTarget);
#pragma warning restore CS0618 // Type or member is obsolete
OnPaintSurface(e);
}
// flush the SkiaSharp contents to GL
canvas.Flush();
context.Flush();
OpenGLContext.FlushBuffer();
}
public override void DrawRect(CGRect dirtyRect)
{
base.DrawRect(dirtyRect);
Gles.glClear(Gles.GL_COLOR_BUFFER_BIT | Gles.GL_DEPTH_BUFFER_BIT | Gles.GL_STENCIL_BUFFER_BIT);
// manage the drawing surface
var size = ConvertSizeToBacking(Bounds.Size);
if (renderTarget == null || surface == null || renderTarget.Width != size.Width || renderTarget.Height != size.Height)
{
// create or update the dimensions
renderTarget?.Dispose();
Gles.glGetIntegerv(Gles.GL_FRAMEBUFFER_BINDING, out var framebuffer);
Gles.glGetIntegerv(Gles.GL_STENCIL_BITS, out var stencil);
Gles.glGetIntegerv(Gles.GL_SAMPLES, out var samples);
var maxSamples = context.GetMaxSurfaceSampleCount(colorType);
if (samples > maxSamples)
{
samples = maxSamples;
}
var glInfo = new GRGlFramebufferInfo((uint)framebuffer, colorType.ToGlSizedFormat());
renderTarget = new GRBackendRenderTarget((int)size.Width, (int)size.Height, samples, stencil, glInfo);
// create the surface
surface?.Dispose();
surface = SKSurface.Create(context, renderTarget, surfaceOrigin, colorType);
}
using (new SKAutoCanvasRestore(surface.Canvas, true))
{
// start drawing
var e = new SKPaintGLSurfaceEventArgs(surface, renderTarget, surfaceOrigin, colorType);
#pragma warning disable CS0618 // Type or member is obsolete
DrawInSurface(e.Surface, e.RenderTarget);
#pragma warning restore CS0618 // Type or member is obsolete
OnPaintSurface(e);
}
// flush the SkiaSharp contents to GL
surface.Canvas.Flush();
context.Flush();
OpenGLContext.FlushBuffer();
}
public override void DrawRect(CGRect dirtyRect)
{
base.DrawRect(dirtyRect);
Gles.glClear(Gles.GL_COLOR_BUFFER_BIT | Gles.GL_DEPTH_BUFFER_BIT | Gles.GL_STENCIL_BUFFER_BIT);
// manage the drawing surface
var size = ConvertSizeToBacking(Bounds.Size);
if (renderTarget == null || surface == null || renderTarget.Width != size.Width || renderTarget.Height != size.Height)
{
// create or update the dimensions
renderTarget?.Dispose();
renderTarget = SKGLDrawable.CreateRenderTarget((int)size.Width, (int)size.Height);
// create the surface
surface?.Dispose();
surface = SKSurface.Create(context, renderTarget, GRSurfaceOrigin.BottomLeft, SKColorType.Rgba8888);
}
using (new SKAutoCanvasRestore(surface.Canvas, true))
{
// start drawing
var e = new SKPaintGLSurfaceEventArgs(surface, renderTarget, GRSurfaceOrigin.BottomLeft, SKColorType.Rgba8888);
#pragma warning disable CS0618 // Type or member is obsolete
DrawInSurface(e.Surface, e.RenderTarget);
#pragma warning restore CS0618 // Type or member is obsolete
OnPaintSurface(e);
}
// flush the SkiaSharp contents to GL
surface.Canvas.Flush();
context.Flush();
OpenGLContext.FlushBuffer();
}