FBStatus
WebGLFramebuffer::PrecheckFramebufferStatus(nsCString* const out_info) const
{
MOZ_ASSERT(mContext->mBoundDrawFramebuffer == this ||
mContext->mBoundReadFramebuffer == this);
if (!HasDefinedAttachments())
return LOCAL_GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT; // No attachments
if (HasIncompleteAttachments(out_info))
return LOCAL_GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
if (!mContext->IsWebGL2()) {
// INCOMPLETE_DIMENSIONS doesn't exist in GLES3.
if (!AllImageRectsMatch())
return LOCAL_GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS; // Inconsistent sizes
const auto depthOrStencilCount = int(mDepthAttachment.IsDefined()) +
int(mStencilAttachment.IsDefined()) +
int(mDepthStencilAttachment.IsDefined());
if (depthOrStencilCount > 1)
return LOCAL_GL_FRAMEBUFFER_UNSUPPORTED;
}
return LOCAL_GL_FRAMEBUFFER_COMPLETE;
}
bool
WebGLFramebuffer::AllImageRectsMatch() const
{
MOZ_ASSERT(HasDefinedAttachments());
MOZ_ASSERT(!HasIncompleteAttachments());
const WebGLRectangleObject& rect = GetAnyRectObject();
// Alright, we have *a* rect, let's check all the others.
bool imageRectsMatch = true;
if (mColorAttachment0.HasImage())
imageRectsMatch &= RectsMatch(mColorAttachment0, rect);
if (mDepthAttachment.HasImage())
imageRectsMatch &= RectsMatch(mDepthAttachment, rect);
if (mStencilAttachment.HasImage())
imageRectsMatch &= RectsMatch(mStencilAttachment, rect);
if (mDepthStencilAttachment.HasImage())
imageRectsMatch &= RectsMatch(mDepthStencilAttachment, rect);
const size_t moreColorAttachmentCount = mMoreColorAttachments.Length();
for (size_t i = 0; i < moreColorAttachmentCount; i++) {
if (mMoreColorAttachments[i].HasImage())
imageRectsMatch &= RectsMatch(mMoreColorAttachments[i], rect);
}
return imageRectsMatch;
}
const WebGLRectangleObject&
WebGLFramebuffer::GetAnyRectObject() const
{
MOZ_ASSERT(HasDefinedAttachments());
if (mColorAttachment0.HasImage())
return mColorAttachment0.RectangleObject();
if (mDepthAttachment.HasImage())
return mDepthAttachment.RectangleObject();
if (mStencilAttachment.HasImage())
return mStencilAttachment.RectangleObject();
if (mDepthStencilAttachment.HasImage())
return mDepthStencilAttachment.RectangleObject();
const size_t moreColorAttachmentCount = mMoreColorAttachments.Length();
for (size_t i = 0; i < moreColorAttachmentCount; i++) {
if (mMoreColorAttachments[i].HasImage())
return mMoreColorAttachments[i].RectangleObject();
}
MOZ_CRASH("Should not get here.");
}
FBStatus
WebGLFramebuffer::PrecheckFramebufferStatus() const
{
MOZ_ASSERT(mContext->mBoundDrawFramebuffer == this ||
mContext->mBoundReadFramebuffer == this);
if (!HasDefinedAttachments())
return LOCAL_GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT; // No attachments
if (HasIncompleteAttachments())
return LOCAL_GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
if (!AllImageRectsMatch())
return LOCAL_GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS; // Inconsistent sizes
if (HasDepthStencilConflict())
return LOCAL_GL_FRAMEBUFFER_UNSUPPORTED;
return LOCAL_GL_FRAMEBUFFER_COMPLETE;
}
bool
WebGLFramebuffer::AllImageRectsMatch() const
{
MOZ_ASSERT(HasDefinedAttachments());
MOZ_ASSERT(!HasIncompleteAttachments());
uint32_t width = 0;
uint32_t height = 0;
bool imageRectsMatch = true;
imageRectsMatch &= MatchOrReplaceSize(mColorAttachment0, &width, &height);
imageRectsMatch &= MatchOrReplaceSize(mDepthAttachment, &width, &height);
imageRectsMatch &= MatchOrReplaceSize(mStencilAttachment, &width, &height);
imageRectsMatch &= MatchOrReplaceSize(mDepthStencilAttachment, &width, &height);
for (const auto& cur : mMoreColorAttachments) {
imageRectsMatch &= MatchOrReplaceSize(cur, &width, &height);
}
return imageRectsMatch;
}