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	DISP3DLIB::BrainRenderer
	Qt RHI-based 3-D renderer managing scene objects, lighting, camera, and render pipeline for brain visualization. More...
struct	DISP3DLIB::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 DISP3DLIB::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 DISP3DLIB::BrainRenderer::SceneData uniform block per draw, which keeps the WebGL backend happy (Qt RHI on WebGL cannot rebind state mid-pass).

All scene objects (DISP3DLIB::BrainSurface, DISP3DLIB::DipoleObject, DISP3DLIB::NetworkObject, DISP3DLIB::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.