FramebufferAttachment *Framebuffer::getAttachment(GLenum attachment) const
{
if (attachment >= GL_COLOR_ATTACHMENT0 && attachment <= GL_COLOR_ATTACHMENT15)
{
return getColorbuffer(attachment - GL_COLOR_ATTACHMENT0);
}
else
{
switch (attachment)
{
case GL_DEPTH_ATTACHMENT:
return getDepthbuffer();
case GL_STENCIL_ATTACHMENT:
return getStencilbuffer();
case GL_DEPTH_STENCIL_ATTACHMENT:
return getDepthStencilBuffer();
default:
UNREACHABLE();
return NULL;
}
}
}
GLenum Framebuffer::completeness() const
{
int width = 0;
int height = 0;
int colorbufferSize = 0;
int samples = -1;
bool missingAttachment = true;
for (unsigned int colorAttachment = 0; colorAttachment < IMPLEMENTATION_MAX_DRAW_BUFFERS; colorAttachment++)
{
if (mColorbufferTypes[colorAttachment] != GL_NONE)
{
const Renderbuffer *colorbuffer = getColorbuffer(colorAttachment);
if (!colorbuffer)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
if (colorbuffer->getWidth() == 0 || colorbuffer->getHeight() == 0)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
if (mColorbufferTypes[colorAttachment] == GL_RENDERBUFFER)
{
if (!gl::IsColorRenderable(colorbuffer->getInternalFormat()))
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
}
else if (IsInternalTextureTarget(mColorbufferTypes[colorAttachment]))
{
GLint internalformat = colorbuffer->getInternalFormat();
GLenum format = gl::ExtractFormat(internalformat);
if (IsCompressed(format) ||
format == GL_ALPHA ||
format == GL_LUMINANCE ||
format == GL_LUMINANCE_ALPHA)
{
return GL_FRAMEBUFFER_UNSUPPORTED;
}
bool filtering, renderable;
if ((gl::IsFloat32Format(internalformat) && !mRenderer->getFloat32TextureSupport(&filtering, &renderable)) ||
(gl::IsFloat16Format(internalformat) && !mRenderer->getFloat16TextureSupport(&filtering, &renderable)))
{
return GL_FRAMEBUFFER_UNSUPPORTED;
}
if (gl::IsDepthTexture(internalformat) || gl::IsStencilTexture(internalformat))
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
}
else
{
UNREACHABLE();
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
if (!missingAttachment)
{
// all color attachments must have the same width and height
if (colorbuffer->getWidth() != width || colorbuffer->getHeight() != height)
{
return GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS;
}
// APPLE_framebuffer_multisample, which EXT_draw_buffers refers to, requires that
// all color attachments have the same number of samples for the FBO to be complete.
if (colorbuffer->getSamples() != samples)
{
return GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT;
}
// all color attachments attachments must have the same number of bitplanes
if (gl::ComputePixelSize(colorbuffer->getInternalFormat()) != colorbufferSize)
{
return GL_FRAMEBUFFER_UNSUPPORTED;
}
// D3D11 does not allow for overlapping RenderTargetViews, so ensure uniqueness
for (unsigned int previousColorAttachment = 0; previousColorAttachment < colorAttachment; previousColorAttachment++)
{
if (mColorbufferPointers[colorAttachment].get() == mColorbufferPointers[previousColorAttachment].get())
{
return GL_FRAMEBUFFER_UNSUPPORTED;
}
}
}
else
{
width = colorbuffer->getWidth();
height = colorbuffer->getHeight();
samples = colorbuffer->getSamples();
colorbufferSize = gl::ComputePixelSize(colorbuffer->getInternalFormat());
missingAttachment = false;
}
}
}
const Renderbuffer *depthbuffer = NULL;
const Renderbuffer *stencilbuffer = NULL;
if (mDepthbufferType != GL_NONE)
{
depthbuffer = getDepthbuffer();
if (!depthbuffer)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
if (depthbuffer->getWidth() == 0 || depthbuffer->getHeight() == 0)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
if (mDepthbufferType == GL_RENDERBUFFER)
{
if (!gl::IsDepthRenderable(depthbuffer->getInternalFormat()))
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
}
else if (IsInternalTextureTarget(mDepthbufferType))
{
GLint internalformat = depthbuffer->getInternalFormat();
// depth texture attachments require OES/ANGLE_depth_texture
if (!mRenderer->getDepthTextureSupport())
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
if (!gl::IsDepthTexture(internalformat))
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
}
else
{
UNREACHABLE();
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
if (missingAttachment)
{
width = depthbuffer->getWidth();
height = depthbuffer->getHeight();
samples = depthbuffer->getSamples();
missingAttachment = false;
}
else if (width != depthbuffer->getWidth() || height != depthbuffer->getHeight())
{
return GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS;
}
else if (samples != depthbuffer->getSamples())
{
return GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_ANGLE;
}
}
if (mStencilbufferType != GL_NONE)
{
stencilbuffer = getStencilbuffer();
if (!stencilbuffer)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
if (stencilbuffer->getWidth() == 0 || stencilbuffer->getHeight() == 0)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
if (mStencilbufferType == GL_RENDERBUFFER)
{
if (!gl::IsStencilRenderable(stencilbuffer->getInternalFormat()))
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
}
else if (IsInternalTextureTarget(mStencilbufferType))
{
GLint internalformat = stencilbuffer->getInternalFormat();
// texture stencil attachments come along as part
// of OES_packed_depth_stencil + OES/ANGLE_depth_texture
if (!mRenderer->getDepthTextureSupport())
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
if (!gl::IsStencilTexture(internalformat))
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
}
else
{
UNREACHABLE();
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
if (missingAttachment)
{
width = stencilbuffer->getWidth();
height = stencilbuffer->getHeight();
samples = stencilbuffer->getSamples();
missingAttachment = false;
}
else if (width != stencilbuffer->getWidth() || height != stencilbuffer->getHeight())
{
return GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS;
}
else if (samples != stencilbuffer->getSamples())
{
return GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_ANGLE;
}
}
// if we have both a depth and stencil buffer, they must refer to the same object
// since we only support packed_depth_stencil and not separate depth and stencil
if (depthbuffer && stencilbuffer && (depthbuffer != stencilbuffer))
{
return GL_FRAMEBUFFER_UNSUPPORTED;
}
// we need to have at least one attachment to be complete
if (missingAttachment)
{
return GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT;
}
return GL_FRAMEBUFFER_COMPLETE;
}
GLenum Framebuffer::completeness()
{
int width = 0;
int height = 0;
int samples = -1;
if (mColorbufferType != GL_NONE)
{
Colorbuffer *colorbuffer = getColorbuffer();
if (!colorbuffer)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
if (colorbuffer->getWidth() == 0 || colorbuffer->getHeight() == 0)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
if (IsTextureTarget(mColorbufferType))
{
if (IsCompressed(colorbuffer->getFormat()))
{
return GL_FRAMEBUFFER_UNSUPPORTED;
}
}
width = colorbuffer->getWidth();
height = colorbuffer->getHeight();
samples = colorbuffer->getSamples();
}
else
{
return GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT;
}
DepthStencilbuffer *depthbuffer = NULL;
DepthStencilbuffer *stencilbuffer = NULL;
if (mDepthbufferType != GL_NONE)
{
depthbuffer = getDepthbuffer();
if (!depthbuffer)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
if (depthbuffer->getWidth() == 0 || depthbuffer->getHeight() == 0)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
if (width == 0)
{
width = depthbuffer->getWidth();
height = depthbuffer->getHeight();
}
else if (width != depthbuffer->getWidth() || height != depthbuffer->getHeight())
{
return GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS;
}
if (samples == -1)
{
samples = depthbuffer->getSamples();
}
else if (samples != depthbuffer->getSamples())
{
return GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_ANGLE;
}
if (IsTextureTarget(mDepthbufferType))
{
if (IsCompressed(depthbuffer->getFormat()))
{
return GL_FRAMEBUFFER_UNSUPPORTED;
}
}
}
if (mStencilbufferType != GL_NONE)
{
stencilbuffer = getStencilbuffer();
if (!stencilbuffer)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
if (stencilbuffer->getWidth() == 0 || stencilbuffer->getHeight() == 0)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
if (width == 0)
{
width = stencilbuffer->getWidth();
height = stencilbuffer->getHeight();
}
else if (width != stencilbuffer->getWidth() || height != stencilbuffer->getHeight())
{
return GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS;
}
if (samples == -1)
{
samples = stencilbuffer->getSamples();
}
else if (samples != stencilbuffer->getSamples())
{
return GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_ANGLE;
}
if (IsTextureTarget(mStencilbufferType))
{
if (IsCompressed(stencilbuffer->getFormat()))
{
return GL_FRAMEBUFFER_UNSUPPORTED;
}
}
}
if (mDepthbufferType == GL_RENDERBUFFER && mStencilbufferType == GL_RENDERBUFFER)
{
if (depthbuffer->getFormat() != GL_DEPTH24_STENCIL8_OES ||
stencilbuffer->getFormat() != GL_DEPTH24_STENCIL8_OES ||
depthbuffer->getSerial() != stencilbuffer->getSerial())
{
return GL_FRAMEBUFFER_UNSUPPORTED;
}
}
return GL_FRAMEBUFFER_COMPLETE;
}
GLenum Framebuffer::completeness(int &width, int &height, int &samples)
{
width = -1;
height = -1;
samples = -1;
if(mColorbufferType != GL_NONE_OES)
{
Renderbuffer *colorbuffer = getColorbuffer();
if(!colorbuffer)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
}
if(colorbuffer->getWidth() == 0 || colorbuffer->getHeight() == 0)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
}
if(mColorbufferType == GL_RENDERBUFFER_OES)
{
if(!IsColorRenderable(colorbuffer->getFormat()))
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
}
}
else if(IsTextureTarget(mColorbufferType))
{
GLenum format = colorbuffer->getFormat();
if(!IsColorRenderable(format))
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
}
if(IsDepthTexture(format) || IsStencilTexture(format))
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
}
}
else
{
UNREACHABLE(mColorbufferType);
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
}
width = colorbuffer->getWidth();
height = colorbuffer->getHeight();
samples = colorbuffer->getSamples();
}
Renderbuffer *depthbuffer = nullptr;
Renderbuffer *stencilbuffer = nullptr;
if(mDepthbufferType != GL_NONE_OES)
{
depthbuffer = getDepthbuffer();
if(!depthbuffer)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
}
if(depthbuffer->getWidth() == 0 || depthbuffer->getHeight() == 0)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
}
if(mDepthbufferType == GL_RENDERBUFFER_OES)
{
if(!es1::IsDepthRenderable(depthbuffer->getFormat()))
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
}
}
else if(IsTextureTarget(mDepthbufferType))
{
if(!es1::IsDepthTexture(depthbuffer->getFormat()))
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
}
}
else
{
UNREACHABLE(mDepthbufferType);
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
}
if(width == -1 || height == -1)
{
width = depthbuffer->getWidth();
height = depthbuffer->getHeight();
samples = depthbuffer->getSamples();
}
else if(width != depthbuffer->getWidth() || height != depthbuffer->getHeight())
{
return GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_OES;
}
else if(samples != depthbuffer->getSamples())
{
UNREACHABLE(0);
}
}
if(mStencilbufferType != GL_NONE_OES)
{
stencilbuffer = getStencilbuffer();
if(!stencilbuffer)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
}
if(stencilbuffer->getWidth() == 0 || stencilbuffer->getHeight() == 0)
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
}
if(mStencilbufferType == GL_RENDERBUFFER_OES)
{
if(!es1::IsStencilRenderable(stencilbuffer->getFormat()))
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
}
}
else if(IsTextureTarget(mStencilbufferType))
{
GLenum internalformat = stencilbuffer->getFormat();
if(!es1::IsStencilTexture(internalformat))
{
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
}
}
else
{
UNREACHABLE(mStencilbufferType);
return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES;
}
if(width == -1 || height == -1)
{
width = stencilbuffer->getWidth();
height = stencilbuffer->getHeight();
samples = stencilbuffer->getSamples();
}
else if(width != stencilbuffer->getWidth() || height != stencilbuffer->getHeight())
{
return GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_OES;
}
else if(samples != stencilbuffer->getSamples())
{
UNREACHABLE(0);
return GL_FRAMEBUFFER_UNSUPPORTED_OES; // GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_OES;
}
}
// We need to have at least one attachment to be complete
if(width == -1 || height == -1)
{
return GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_OES;
}
return GL_FRAMEBUFFER_COMPLETE_OES;
}