/// <summary>
/// Проверить текстуру кадрового буфера
/// </summary>
private void CheckSurfaceTexture()
{
if (GlSurfaceTextureId <= 0 || GlSurfaceFramebuffer <= 0)
{
GlSurfaceFramebuffer = GL.GenFramebuffer();
GL.BindFramebuffer(FramebufferTarget.DrawFramebuffer, GlSurfaceFramebuffer);
GlSurfaceTextureId = GL.GenTexture();
GL.BindTexture(TextureTarget.Texture2D, GlSurfaceTextureId);
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgb,
ViewBehaviourConsts.BASE_SURFACE_WIDTH, ViewBehaviourConsts.BASE_SURFACE_HEIGHT, 0, PixelFormat.Rgb,
PixelType.UnsignedByte, IntPtr.Zero);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter,
(int)TextureMinFilter.Nearest);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter,
(int)TextureMinFilter.Nearest);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS,
(int)TextureWrapMode.Clamp);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT,
(int)TextureWrapMode.Clamp);
GL.FramebufferTexture2D(FramebufferTarget.DrawFramebuffer, FramebufferAttachment.ColorAttachment0,
TextureTarget.Texture2D, GlSurfaceTextureId, 0);
_glSurfaceDrawBuffers = DrawBufferMode.ColorAttachment0;
GL.DrawBuffer(_glSurfaceDrawBuffers);
}
}
public void AttachColorTexture(int index, DeviceTexture2D texture)
{
Bind();
Debug.Assert(texture is OpenGLESTexture2D);
OpenGLESTexture2D glTex = (OpenGLESTexture2D)texture;
_colorTextures[index] = glTex;
GL.ActiveTexture(TextureUnit.Texture0);
Utilities.CheckLastGLES3Error();
glTex.Bind();
GL.FramebufferTexture2D(
FramebufferTarget.Framebuffer,
FramebufferAttachment.ColorAttachment0,
TextureTarget2d.Texture2D,
glTex.ID,
0);
GL.BindTexture(TextureTarget.Texture2D, 0);
Utilities.CheckLastGLES3Error();
DrawBufferMode mode = DrawBufferMode.ColorAttachment0 + index;
GL.DrawBuffers(1, ref mode);
Utilities.CheckLastGLES3Error();
Unbind();
}
public void ApplyPostRender()
{
// Removed thread guards because of performance
//DefaultOpenTKBackendPlugin.GuardSingleThreadState();
if (!this.pendingPostRender)
{
return;
}
// Resolve multisampling to the main FBO
if (this.samples > 0)
{
GL.BindFramebuffer(FramebufferTarget.ReadFramebuffer, this.handleMsaaFBO);
GL.BindFramebuffer(FramebufferTarget.DrawFramebuffer, this.handleMainFBO);
for (int i = 0; i < this.targetInfos.Count; i++)
{
GL.ReadBuffer((ReadBufferMode)((int)ReadBufferMode.ColorAttachment0 + i));
DrawBufferMode mode = (DrawBufferMode)((int)DrawBufferMode.ColorAttachment0 + i);
GL.DrawBuffers(1, ref mode);
GL.BlitFramebuffer(
0, 0, this.targetInfos.Data[i].Target.Width, this.targetInfos.Data[i].Target.Height,
0, 0, this.targetInfos.Data[i].Target.Width, this.targetInfos.Data[i].Target.Height,
ClearBufferMask.ColorBufferBit, BlitFramebufferFilter.Nearest);
}
}
// Generate mipmaps for the target textures
int lastTexId = -1;
for (int i = 0; i < this.targetInfos.Count; i++)
{
if (!this.targetInfos.Data[i].Target.HasMipmaps)
{
continue;
}
if (lastTexId == -1)
{
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
GL.GetInteger(GetPName.TextureBinding2D, out lastTexId);
}
int texId = this.targetInfos.Data[i].Target.Handle;
GL.BindTexture(TextureTarget.Texture2D, texId);
GL.GenerateMipmap(TextureTarget.Texture2D);
}
// Reset OpenGL state
if (lastTexId != -1)
{
GL.BindTexture(TextureTarget.Texture2D, lastTexId);
}
ApplyGLBind(curBound);
this.pendingPostRender = false;
}
public static void DrawBuffer(DrawBufferMode mode)
{
GL.DrawBuffer(mode);
if (enableErrorCheck)
{
LogErrors();
}
}
//STATIC HELPER METHODS
public static void copyChannel(int from_fbo, int to_fbo, int sourceSizeX, int sourceSizeY, int destSizeX, int destSizeY,
ReadBufferMode from_channel, DrawBufferMode to_channel)
{
GL.BindFramebuffer(FramebufferTarget.ReadFramebuffer, from_fbo);
GL.ReadBuffer(from_channel); //Read color
GL.BindFramebuffer(FramebufferTarget.DrawFramebuffer, to_fbo);
GL.DrawBuffer(to_channel); //Write to blur1
GL.BlitFramebuffer(0, 0, sourceSizeX, sourceSizeY, 0, 0, destSizeX, destSizeY,
ClearBufferMask.ColorBufferBit, BlitFramebufferFilter.Linear);
}
private static void ApplyGLBind(NativeRenderTarget target)
{
if (target == null)
{
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
GL.ReadBuffer(ReadBufferMode.Back);
DrawBufferMode mode = DrawBufferMode.Back;
GL.DrawBuffers(1, ref mode);
}
else
{
GL.BindFramebuffer(FramebufferTarget.Framebuffer, target.samples > 0 ? target.handleMsaaFBO : target.handleMainFBO);
DrawBufferMode[] buffers = new DrawBufferMode[target.targetInfos.Count];
for (int i = 0; i < buffers.Length; i++)
{
buffers[i] = (DrawBufferMode)((int)DrawBufferMode.ColorAttachment0 + i);
}
GL.DrawBuffers(buffers.Length, buffers);
}
}
public void DrawBuffer(DrawBufferMode mode)
{
gl.glDrawBuffer((int)mode);
CheckException();
}
public static void DrawBuffer(DrawBufferMode mode)
{
glDrawBuffer deleg = BaseGraphicsContext.Current.Loader.Get<glDrawBuffer>();
if (deleg != null)
deleg(mode);
}
public static Reaction <T> DrawBuffer <T> (this Reaction <T> render, DrawBufferMode mode)
{
return(render.DrawBuffer(i => mode));
}
public void DrawBuffer(DrawBufferMode DrawBufferMode)
{
_glDrawBuffer((int)DrawBufferMode);
}
internal static extern void glDrawBuffer(DrawBufferMode mode);
internal void Bind()
{
GL.BindFramebuffer(FramebufferType.Framebuffer, framebuffer);
GL.Viewport(0, 0, width, height);
int attachmentCount = 0;
int temp = attachments;
while (temp != 0)
{
attachmentCount++;
temp &= temp - 1;
}
if (attachmentCount == 0)
{
GL.DrawBuffer(DrawBufferMode.None);
}
else if (attachmentCount == 1)
{
DrawBufferMode drawBuffer = DrawBufferMode.Color0;
temp = attachments;
while (temp != 1)
{
temp >>= 1;
drawBuffer++;
}
GL.DrawBuffer(drawBuffer);
}
else
{
DrawBufferMode[] buffers = new DrawBufferMode[attachmentCount];
DrawBufferMode drawBuffer = DrawBufferMode.Color0;
temp = attachments;
for (int i = 0; i < attachmentCount; i++)
{
while ((temp & 1) != 1)
{
temp >>= 1;
}
temp >>= 1;
buffers[i] = drawBuffer++;
}
GL.DrawBuffers(buffers);
}
}
public void DrawBuffer(DrawBufferMode drawBufferMode)
{
GL.DrawBuffer(drawBufferMode);
}
public static void glDrawBuffer(DrawBufferMode mode) => p_glDrawBuffer(mode);
public static void copyChannel(int fbo, int sourceSizeX, int sourceSizeY, ReadBufferMode from_channel, DrawBufferMode to_channel)
{
GL.BindFramebuffer(FramebufferTarget.ReadFramebuffer, fbo);
GL.ReadBuffer(from_channel); //Read color
GL.BindFramebuffer(FramebufferTarget.DrawFramebuffer, fbo);
GL.DrawBuffer(to_channel); //Write to blur1
//Method 1: Use Blitbuffer
GL.BlitFramebuffer(0, 0, sourceSizeX, sourceSizeY, 0, 0, sourceSizeX, sourceSizeY,
ClearBufferMask.ColorBufferBit, BlitFramebufferFilter.Nearest);
}
public void ReadBuffer(DrawBufferMode drawBufferMode)
{
NativeMethods.ReadBuffer(drawBufferMode);
CheckForError();
}
public unsafe static void NamedFramebufferDrawBuffer(uint framebuffer, DrawBufferMode buf) => glNamedFramebufferDrawBuffer(framebuffer, buf);
public static extern void DrawBuffer( DrawBufferMode mode );
internal static extern void glDrawBuffer(DrawBufferMode mode);
public static void draw(DrawBufferMode mode)
{
GL.DrawBuffer(mode);
}
internal static extern void ReadBuffer(DrawBufferMode drawBufferMode);
public static void DrawBuffer(DrawBufferMode mode)
{
gl.glDrawBuffer((int)mode);
}
public static void FramebufferDrawBufferEXT(UInt32 framebuffer, DrawBufferMode mode)
{
Debug.Assert(Delegates.pglFramebufferDrawBufferEXT != null, "pglFramebufferDrawBufferEXT not implemented");
Delegates.pglFramebufferDrawBufferEXT(framebuffer, (Int32)mode);
CallLog("glFramebufferDrawBufferEXT({0}, {1})", framebuffer, mode);
DebugCheckErrors();
}
public void DrawBuffer(DrawBufferMode mode)
{
using (new Bind(this))
GL.DrawBuffer(mode);
}
public static void glDrawBuffer(DrawBufferMode buf)
{
i_OpenGL1_0.glDrawBuffer(buf);
}
public unsafe static void DrawBuffer(DrawBufferMode mode) => glDrawBuffer(mode);
public static void DrawBuffer(DrawBufferMode buf)
{
Debug.Assert(Delegates.pglDrawBuffer != null, "pglDrawBuffer not implemented");
Delegates.pglDrawBuffer((Int32)buf);
CallLog("glDrawBuffer({0})", buf);
DebugCheckErrors();
}
public void DrawBuffer(DrawBufferMode Buffer)
{
//GL.DrawBuffer(Buffer);
GL.NamedFramebufferDrawBuffer(ID, Buffer);
}
