private RenderTarget CreateRenderTarget(Vector2i size, RenderTargetFormatParameters format,
TextureSampleParameters?sampleParameters = null, string name = null)
{
// Cache currently bound framebuffers
// so if somebody creates a framebuffer while drawing it won't ruin everything.
var boundDrawBuffer = GL.GetInteger(GetPName.DrawFramebufferBinding);
var boundReadBuffer = GL.GetInteger(GetPName.ReadFramebufferBinding);
// Generate FBO.
var fbo = new GLHandle(GL.GenFramebuffer());
// Bind color attachment to FBO.
GL.BindFramebuffer(FramebufferTarget.Framebuffer, fbo.Handle);
ObjectLabelMaybe(ObjectLabelIdentifier.Framebuffer, fbo, name);
var(width, height) = size;
ClydeTexture textureObject;
GLHandle depthStencilBuffer = default;
// Color attachment.
{
var texture = new GLHandle(GL.GenTexture());
GL.BindTexture(TextureTarget.Texture2D, texture.Handle);
ApplySampleParameters(sampleParameters);
var internalFormat = format.ColorFormat switch
{
RenderTargetColorFormat.Rgba8 => PixelInternalFormat.Rgba8,
RenderTargetColorFormat.Rgba16F => PixelInternalFormat.Rgba16f,
RenderTargetColorFormat.Rgba8Srgb => PixelInternalFormat.Srgb8Alpha8,
RenderTargetColorFormat.R11FG11FB10F => PixelInternalFormat.R11fG11fB10f,
RenderTargetColorFormat.R32F => PixelInternalFormat.R32f,
_ => throw new ArgumentOutOfRangeException(nameof(format.ColorFormat), format.ColorFormat, null)
};
GL.TexImage2D(TextureTarget.Texture2D, 0, internalFormat, width, height, 0, PixelFormat.Red,
PixelType.Byte, IntPtr.Zero);
GL.FramebufferTexture(FramebufferTarget.Framebuffer, FramebufferAttachment.ColorAttachment0,
texture.Handle,
0);
textureObject = GenTexture(texture, size, name == null ? null : $"{name}-color");
}
// Depth/stencil buffers.
if (format.HasDepthStencil)
{
depthStencilBuffer = new GLHandle(GL.GenRenderbuffer());
GL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, depthStencilBuffer.Handle);
ObjectLabelMaybe(ObjectLabelIdentifier.Renderbuffer, depthStencilBuffer,
name == null ? null : $"{name}-depth-stencil");
GL.RenderbufferStorage(RenderbufferTarget.Renderbuffer, RenderbufferStorage.Depth24Stencil8, width,
height);
GL.FramebufferRenderbuffer(FramebufferTarget.Framebuffer, FramebufferAttachment.DepthStencilAttachment,
RenderbufferTarget.Renderbuffer, depthStencilBuffer.Handle);
}
// This should always pass but OpenGL makes it easy to check for once so let's.
var status = GL.CheckFramebufferStatus(FramebufferTarget.Framebuffer);
DebugTools.Assert(status == FramebufferErrorCode.FramebufferComplete,
$"new framebuffer has bad status {status}");
// Re-bind previous framebuffers.
GL.BindFramebuffer(FramebufferTarget.DrawFramebuffer, boundDrawBuffer);
GL.BindFramebuffer(FramebufferTarget.ReadFramebuffer, boundReadBuffer);
var handle = AllocRid();
var renderTarget = new RenderTarget(size, textureObject, fbo, this, handle, depthStencilBuffer);
_renderTargets.Add(handle, renderTarget);
return(renderTarget);
}
IRenderTarget IClyde.CreateRenderTarget(Vector2i size, RenderTargetFormatParameters format,
TextureSampleParameters?sampleParameters, string name)
{
return(CreateRenderTarget(size, format, sampleParameters, name));
}
private RenderTexture CreateRenderTarget(Vector2i size, RenderTargetFormatParameters format,
TextureSampleParameters?sampleParameters = null, string?name = null)
{
DebugTools.Assert(size.X != 0);
DebugTools.Assert(size.Y != 0);
// Cache currently bound framebuffers
// so if somebody creates a framebuffer while drawing it won't ruin everything.
// Note that this means _currentBoundRenderTarget goes temporarily out of sync here
var boundDrawBuffer = GL.GetInteger(GetPName.DrawFramebufferBinding);
var boundReadBuffer = 0;
if (_hasGLReadFramebuffer)
{
boundReadBuffer = GL.GetInteger(GetPName.ReadFramebufferBinding);
}
// Generate FBO.
var fbo = new GLHandle(GL.GenFramebuffer());
// Bind color attachment to FBO.
GL.BindFramebuffer(FramebufferTarget.Framebuffer, fbo.Handle);
CheckGlError();
ObjectLabelMaybe(ObjectLabelIdentifier.Framebuffer, fbo, name);
var(width, height) = size;
ClydeTexture textureObject;
GLHandle depthStencilBuffer = default;
var estPixSize = 0L;
// Color attachment.
{
var texture = new GLHandle(GL.GenTexture());
CheckGlError();
GL.BindTexture(TextureTarget.Texture2D, texture.Handle);
CheckGlError();
ApplySampleParameters(sampleParameters);
var colorFormat = format.ColorFormat;
if ((!_hasGLSrgb) && (colorFormat == RTCF.Rgba8Srgb))
{
// If SRGB is not supported, switch formats.
// The shaders will have to compensate.
// Note that a check is performed on the *original* format.
colorFormat = RTCF.Rgba8;
}
// This isn't good
if (!_hasGLFloatFramebuffers)
{
switch (colorFormat)
{
case RTCF.R32F:
case RTCF.RG32F:
case RTCF.R11FG11FB10F:
case RTCF.Rgba16F:
Logger.WarningS("clyde.ogl", "The framebuffer {0} [{1}] is trying to be floating-point when that's not supported. Forcing Rgba8.", name == null ? "[unnamed]" : name, size);
colorFormat = RTCF.Rgba8;
break;
}
}
// Make sure to specify the correct pixel type and formats even if we're not uploading any data.
// Not doing this (just sending red/byte) is fine on desktop GL but illegal on ES.
var(internalFormat, pixFormat, pixType) = colorFormat switch
{
// using block comments to force formatters to not f**k this up.
RTCF.Rgba8 => /* */ (PIF.Rgba8, /* */ PF.Rgba, /**/ PT.UnsignedByte),
RTCF.Rgba16F => /* */ (PIF.Rgba16f, /* */ PF.Rgba, /**/ PT.Float),
RTCF.Rgba8Srgb => /* */ (PIF.Srgb8Alpha8, /* */ PF.Rgba, /**/ PT.UnsignedByte),
RTCF.R11FG11FB10F => /**/ (PIF.R11fG11fB10f, /**/ PF.Rgb, /* */ PT.Float),
RTCF.R32F => /* */ (PIF.R32f, /* */ PF.Red, /* */ PT.Float),
RTCF.RG32F => /* */ (PIF.Rg32f, /* */ PF.Rg, /* */ PT.Float),
RTCF.R8 => /* */ (PIF.R8, /* */ PF.Red, /* */ PT.UnsignedByte),
_ => throw new ArgumentOutOfRangeException(nameof(format.ColorFormat), format.ColorFormat, null)
};
estPixSize += EstPixelSize(internalFormat);
GL.TexImage2D(TextureTarget.Texture2D, 0, internalFormat, width, height, 0, pixFormat,
pixType, IntPtr.Zero);
CheckGlError();
if (!_isGLES)
{
GL.FramebufferTexture(FramebufferTarget.Framebuffer, FramebufferAttachment.ColorAttachment0,
texture.Handle,
0);
}
else
{
// OpenGL ES uses a different name, and has an odd added target argument
GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, FramebufferAttachment.ColorAttachment0,
TextureTarget.Texture2D, texture.Handle, 0);
}
CheckGlError();
// Check on original format is NOT a bug, this is so srgb emulation works
textureObject = GenTexture(texture, size, format.ColorFormat == RTCF.Rgba8Srgb, name == null ? null : $"{name}-color");
}
// Depth/stencil buffers.
if (format.HasDepthStencil)
{
depthStencilBuffer = new GLHandle(GL.GenRenderbuffer());
GL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, depthStencilBuffer.Handle);
CheckGlError();
ObjectLabelMaybe(ObjectLabelIdentifier.Renderbuffer, depthStencilBuffer,
name == null ? null : $"{name}-depth-stencil");
GL.RenderbufferStorage(RenderbufferTarget.Renderbuffer, RenderbufferStorage.Depth24Stencil8, width,
height);
CheckGlError();
estPixSize += 4;
GL.FramebufferRenderbuffer(FramebufferTarget.Framebuffer, FramebufferAttachment.DepthAttachment,
RenderbufferTarget.Renderbuffer, depthStencilBuffer.Handle);
GL.FramebufferRenderbuffer(FramebufferTarget.Framebuffer, FramebufferAttachment.StencilAttachment,
RenderbufferTarget.Renderbuffer, depthStencilBuffer.Handle);
CheckGlError();
}
// This should always pass but OpenGL makes it easy to check for once so let's.
var status = GL.CheckFramebufferStatus(FramebufferTarget.Framebuffer);
CheckGlError();
DebugTools.Assert(status == FramebufferErrorCode.FramebufferComplete,
$"new framebuffer has bad status {status}");
// Re-bind previous framebuffers (thus _currentBoundRenderTarget is back in sync)
GL.BindFramebuffer(FramebufferTarget.DrawFramebuffer, boundDrawBuffer);
CheckGlError();
if (_hasGLReadFramebuffer)
{
GL.BindFramebuffer(FramebufferTarget.ReadFramebuffer, boundReadBuffer);
CheckGlError();
}
var pressure = estPixSize * size.X * size.Y;
var handle = AllocRid();
var data = new LoadedRenderTarget
{
IsWindow = false,
IsSrgb = textureObject.IsSrgb,
DepthStencilHandle = depthStencilBuffer,
FramebufferHandle = fbo,
Size = size,
TextureHandle = textureObject.TextureId,
MemoryPressure = pressure
};
//GC.AddMemoryPressure(pressure);
var renderTarget = new RenderTexture(size, textureObject, this, handle);
_renderTargets.Add(handle, data);
return(renderTarget);
}
public IRenderTexture CreateRenderTarget(Vector2i size, RenderTargetFormatParameters format,
TextureSampleParameters?sampleParameters = null, string?name = null)
{
return(new DummyRenderTexture(size, new DummyTexture(size)));
}
private RenderTexture CreateRenderTarget(Vector2i size, RenderTargetFormatParameters format,
TextureSampleParameters?sampleParameters = null, string?name = null)
{
DebugTools.Assert(size.X != 0);
DebugTools.Assert(size.Y != 0);
// Cache currently bound framebuffers
// so if somebody creates a framebuffer while drawing it won't ruin everything.
var boundDrawBuffer = GL.GetInteger(GetPName.DrawFramebufferBinding);
var boundReadBuffer = GL.GetInteger(GetPName.ReadFramebufferBinding);
// Generate FBO.
var fbo = new GLHandle(GL.GenFramebuffer());
// Bind color attachment to FBO.
GL.BindFramebuffer(FramebufferTarget.Framebuffer, fbo.Handle);
ObjectLabelMaybe(ObjectLabelIdentifier.Framebuffer, fbo, name);
var(width, height) = size;
ClydeTexture textureObject;
GLHandle depthStencilBuffer = default;
var estPixSize = 0L;
// Color attachment.
{
var texture = new GLHandle(GL.GenTexture());
GL.BindTexture(TextureTarget.Texture2D, texture.Handle);
ApplySampleParameters(sampleParameters);
// Make sure to specify the correct pixel type and formats even if we're not uploading any data.
// Not doing this (just sending red/byte) is fine on desktop GL but illegal on ES.
var(internalFormat, pixFormat, pixType) = format.ColorFormat switch
{
// using block comments to force formatters to not f**k this up.
RTCF.Rgba8 => /* */ (PIF.Rgba8, /* */ PF.Rgba, /**/ PT.UnsignedByte),
RTCF.Rgba16F => /* */ (PIF.Rgba16f, /* */ PF.Rgba, /**/ PT.Float),
RTCF.Rgba8Srgb => /* */ (PIF.Srgb8Alpha8, /* */ PF.Rgba, /**/ PT.UnsignedByte),
RTCF.R11FG11FB10F => /**/ (PIF.R11fG11fB10f, /**/ PF.Rgb, /* */ PT.Float),
RTCF.R32F => /* */ (PIF.R32f, /* */ PF.Red, /* */ PT.Float),
RTCF.RG32F => /* */ (PIF.Rg32f, /* */ PF.Rg, /* */ PT.Float),
RTCF.R8 => /* */ (PIF.R8, /* */ PF.Red, /* */ PT.UnsignedByte),
_ => throw new ArgumentOutOfRangeException(nameof(format.ColorFormat), format.ColorFormat, null)
};
estPixSize += EstPixelSize(internalFormat);
GL.TexImage2D(TextureTarget.Texture2D, 0, internalFormat, width, height, 0, pixFormat,
pixType, IntPtr.Zero);
GL.FramebufferTexture(FramebufferTarget.Framebuffer, FramebufferAttachment.ColorAttachment0,
texture.Handle,
0);
textureObject = GenTexture(texture, size, name == null ? null : $"{name}-color");
}
// Depth/stencil buffers.
if (format.HasDepthStencil)
{
depthStencilBuffer = new GLHandle(GL.GenRenderbuffer());
GL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, depthStencilBuffer.Handle);
ObjectLabelMaybe(ObjectLabelIdentifier.Renderbuffer, depthStencilBuffer,
name == null ? null : $"{name}-depth-stencil");
GL.RenderbufferStorage(RenderbufferTarget.Renderbuffer, RenderbufferStorage.Depth24Stencil8, width,
height);
estPixSize += 4;
GL.FramebufferRenderbuffer(FramebufferTarget.Framebuffer, FramebufferAttachment.DepthStencilAttachment,
RenderbufferTarget.Renderbuffer, depthStencilBuffer.Handle);
}
// This should always pass but OpenGL makes it easy to check for once so let's.
var status = GL.CheckFramebufferStatus(FramebufferTarget.Framebuffer);
DebugTools.Assert(status == FramebufferErrorCode.FramebufferComplete,
$"new framebuffer has bad status {status}");
// Re-bind previous framebuffers.
GL.BindFramebuffer(FramebufferTarget.DrawFramebuffer, boundDrawBuffer);
GL.BindFramebuffer(FramebufferTarget.ReadFramebuffer, boundReadBuffer);
var pressure = estPixSize * size.X * size.Y;
var handle = AllocRid();
var data = new LoadedRenderTarget
{
IsWindow = false,
DepthStencilHandle = depthStencilBuffer,
FramebufferHandle = fbo,
Size = size,
TextureHandle = textureObject.TextureId,
MemoryPressure = pressure
};
//GC.AddMemoryPressure(pressure);
var renderTarget = new RenderTexture(size, textureObject, this, handle);
_renderTargets.Add(handle, data);
return(renderTarget);
}
