Merge branch 'its_just_a_render_target' into 'master'

Update render targets outside of draw thread

See merge request OpenMW/openmw!4361

apps/openmw/mwrender/pingpongcanvas.cpp

@@ -278,25 +278,6 @@ namespace MWRender
 
                 if (pass.mRenderTarget)
                 {
-                    if (mDirtyAttachments.size() > 0)
-                    {
-                        const auto [w, h]
-                            = pass.mSize.get(mTextureScene->getTextureWidth(), mTextureScene->getTextureHeight());
-
-                        // Custom render targets must be shared between frame ids, so it's impossible to double buffer
-                        // without expensive copies. That means the only thread-safe place to resize is in the draw
-                        // thread.
-                        osg::Texture2D* texture = const_cast<osg::Texture2D*>(dynamic_cast<const osg::Texture2D*>(
-                            pass.mRenderTarget->getAttachment(osg::FrameBufferObject::BufferComponent::COLOR_BUFFER0)
-                                .getTexture()));
-
-                        assert(texture != nullptr);
-
-                        texture->setTextureSize(w, h);
-                        texture->setNumMipmapLevels(pass.mRenderTexture->getNumMipmapLevels());
-                        texture->dirtyTextureObject();
-                    }
-
                     pass.mRenderTarget->apply(state, osg::FrameBufferObject::DRAW_FRAMEBUFFER);
 
                     if (pass.mRenderTexture->getNumMipmapLevels() > 0)

apps/openmw/mwrender/postprocessor.cpp

@@ -650,13 +650,16 @@ namespace MWRender
                     subPass.mRenderTexture = renderTarget.mTarget;
                     subPass.mMipMap = renderTarget.mMipMap;
 
+                    const auto [w, h] = renderTarget.mSize.get(renderWidth(), renderHeight());
+                    subPass.mStateSet->setAttributeAndModes(new osg::Viewport(0, 0, w, h));
+
+                    subPass.mRenderTexture->setTextureSize(w, h);
+                    subPass.mRenderTexture->dirtyTextureObject();
+
                     subPass.mRenderTarget = new osg::FrameBufferObject;
                     subPass.mRenderTarget->setAttachment(osg::FrameBufferObject::BufferComponent::COLOR_BUFFER0,
                         osg::FrameBufferAttachment(subPass.mRenderTexture));
 
-                    const auto [w, h] = renderTarget.mSize.get(renderWidth(), renderHeight());
-                    subPass.mStateSet->setAttributeAndModes(new osg::Viewport(0, 0, w, h));
-
                     if (std::find_if(attachmentsToDirty.cbegin(), attachmentsToDirty.cend(),
                             [renderTarget](const auto& rt) { return renderTarget.mTarget == rt.mTarget; })
                         == attachmentsToDirty.cend())