brainrenderer.h File Reference

Qt-RHI scene renderer: shader pipelines, lighting, dual render targets and per-frame draw orchestration for disp3D. More...

#include "../disp3D_global.h"
#include "../core/rendertypes.h"
#include <QMatrix4x4>
#include <QVector3D>
#include <memory>

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Classes
class	BrainRenderer
	Qt RHI-based 3-D renderer managing scene objects, lighting, camera, and render pipeline for brain visualization. More...
struct	BrainRenderer::SceneData
	Aggregated GPU resources and render state for the 3-D brain visualization scene. More...

Namespaces
namespace	DISP3DLIB
	3-D brain visualisation using the Qt RHI rendering backend.

Detailed Description

Qt-RHI scene renderer: shader pipelines, lighting, dual render targets and per-frame draw orchestration for disp3D.

SPDX-License-Identifier: BSD-3-Clause Copyright (c) 2026 MNE-CPP Authors

Author

Christoph Dinh chris.nosp@m.toph.nosp@m..dinh.nosp@m.@mne.nosp@m.-cpp..nosp@m.org

Since

2.0.0

Date

March 2026

BrainRenderer is the only object in disp3D that talks directly to QRhi. It creates the shader pipelines for every ShaderMode (Standard Phong, Holographic, Anatomical, Dipole arrows, XRay, ShowNormals), allocates the dual rtClear / rtPreserve render targets needed for the multi-pass cortex + overlay composition, and issues per-frame beginPass / drawIndexed calls for every visible scene object.

The renderer packs camera matrices, light direction, viewport, scissor and the active overlay mode into one SceneData uniform block per draw, which keeps the WebGL backend happy (Qt RHI on WebGL cannot rebind state mid-pass).

All scene objects (BrainSurface, DipoleObject, NetworkObject, VideoOverlay) are accepted through opaque pointers so the renderer never pulls in the heavy headers of the modalities it draws.

Definition in file brainrenderer.h.