GLenum Framebuffer::completeness()
{
int width;
int height;
int samples;
return completeness(width, height, samples);
}
int Framebuffer::getSamples()
{
if (completeness() == GL_FRAMEBUFFER_COMPLETE)
{
return getColorbuffer()->getSamples();
}
else
{
return 0;
}
}
bool Framebuffer::isMultisample()
{
// If the framebuffer is not complete, attachment samples may be mismatched, and it
// cannot be used as a multisample framebuffer. If it is complete, it is required to
// have a color attachment, and all its attachments must have the same number of samples,
// so the number of samples for the colorbuffer will indicate whether the framebuffer is
// multisampled.
if (completeness() == GL_FRAMEBUFFER_COMPLETE && getColorbuffer()->getSamples() > 0)
{
return true;
}
else
{
return false;
}
}
int Framebuffer::getSamples(const gl::Data &data) const
{
if (completeness(data) == GL_FRAMEBUFFER_COMPLETE)
{
// for a complete framebuffer, all attachments must have the same sample count
// in this case return the first nonzero sample size
for (unsigned int colorAttachment = 0; colorAttachment < IMPLEMENTATION_MAX_DRAW_BUFFERS; colorAttachment++)
{
if (mColorbuffers[colorAttachment])
{
return mColorbuffers[colorAttachment]->getSamples();
}
}
}
return 0;
}
void Framebuffer::invalidateSub(const Caps &caps, GLsizei numAttachments, const GLenum *attachments,
GLint x, GLint y, GLsizei width, GLsizei height)
{
ASSERT(completeness() == GL_FRAMEBUFFER_COMPLETE);
for (GLsizei attachIndex = 0; attachIndex < numAttachments; ++attachIndex)
{
GLenum attachmentTarget = attachments[attachIndex];
gl::FramebufferAttachment *attachment =
(attachmentTarget == GL_DEPTH_STENCIL_ATTACHMENT) ? getDepthOrStencilbuffer() :
getAttachment(attachmentTarget);
if (attachment)
{
rx::RenderTarget *renderTarget = rx::GetAttachmentRenderTarget(attachment);
if (renderTarget)
{
renderTarget->invalidate(x, y, width, height);
}
}
}
}
