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// Copyright (c) 2010-2026, Lawrence Livermore National Security, LLC. Produced
// at the Lawrence Livermore National Laboratory. All Rights reserved. See files
// LICENSE and NOTICE for details. LLNL-CODE-443271.
//
// This file is part of the GLVis visualization tool and library. For more
// information and source code availability see https://glvis.org.
//
// GLVis is free software; you can redistribute it and/or modify it under the
// terms of the BSD-3 license. We welcome feedback and contributions, see file
// CONTRIBUTING.md for details.
#ifndef GLVIS_RENDERER_FF_HPP
#define GLVIS_RENDERER_FF_HPP
#include <array>
#include <vector>
#include <cstddef>
#include "renderer.hpp"
namespace gl3
{
// Render for legacy OpenGL systems with access to only the fixed-function
// pipeline
class FFGLDevice : public GLDevice
{
struct DispListData_
{
resource::DispListHandle list;
GLenum shape;
size_t count;
array_layout layout;
};
std::vector<DispListData_> disp_lists;
template<typename TVtx>
void bufferFFDeviceImpl(const VertexBuffer<TVtx>& buf);
template<typename TVtx>
void bufferFFDeviceImpl(const IndexedVertexBuffer<TVtx>& buf);
public:
FFGLDevice()
{
disp_lists.emplace_back(DispListData_{}); // dummy for index 0
}
DeviceType getType() override { return GLDevice::FF_DEVICE; }
void init() override;
void setTransformMatrices(glm::mat4 model_view, glm::mat4 projection) override;
void setNumLights(int i) override;
void setMaterial(Material mat) override;
void setPointLight(int i, Light lt) override;
void setAmbientLight(const std::array<float, 4>& amb) override;
void setClipPlaneUse(bool enable) override;
void setClipPlaneEqn(const std::array<double, 4>& eqn) override;
void bufferToDevice(array_layout layout, IVertexBuffer& buf) override;
void bufferToDevice(array_layout layout, IIndexedBuffer& buf) override;
void bufferToDevice(TextBuffer& t_buf) override;
void drawDeviceBuffer(int hnd) override;
void drawDeviceBuffer(const TextBuffer& t_buf) override;
void captureXfbBuffer(PaletteState& pal, CaptureBuffer& cbuf, int hnd) override;
};
}
#endif // GLVIS_RENDERER_FF_HPP
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