Method BuildFrameState

engine/PoseidonGL33/EngineGL33_Shaders.cpp:891–942

}

FrameState EngineGL33::BuildFrameState(Camera* camera, LightSun* sun, int bias, const Color& fogColor, bool sunEnabled)
{
    FrameState frame = {};

    ConvertMatrix(frame.view, camera->InverseScaled());
    frame.view._41 = 0;
    frame.view._42 = 0;
    frame.view._43 = 0;

    int projBias = _canZBias ? 0 : bias;
    ConvertProjectionMatrix(frame.projection, camera->ProjectionNormal(), projBias);

    Vector3 pos = camera->Position();
    frame.cameraPos[0] = static_cast<float>(pos.X());
    frame.cameraPos[1] = static_cast<float>(pos.Y());
    frame.cameraPos[2] = static_cast<float>(pos.Z());

    frame.viewport[0] = 0;
    frame.viewport[1] = 0;
    frame.viewport[2] = static_cast<float>(_w);
    frame.viewport[3] = static_cast<float>(_h);

    // Fog parameters — use the scene's actual fog range (driven by weather /
    // rain / clamp), matching what D3D8 set D3DRS_FOGSTART/END from and the
    // per-vertex Fog8/SkyFog8 tables.
    float wFogStart = camera->ClipNear();
    float wFogEnd = camera->ClipFar();
    if (GScene)
    {
        wFogStart = GScene->GetFogMinRange();
        wFogEnd = GScene->GetFogMaxRange();
    }
    float fogInvRange = (wFogEnd > wFogStart) ? 1.0f / (wFogEnd - wFogStart) : 0.0f;
    frame.fogParams[0] = wFogStart;
    frame.fogParams[1] = fogInvRange;
    frame.fogParams[2] = 1.0f; // enabled
    frame.fogParams[3] = 0;

    frame.fogColor[0] = fogColor.R();
    frame.fogColor[1] = fogColor.G();
    frame.fogColor[2] = fogColor.B();
    frame.fogColor[3] = 1.0f;

    Vector3 dir = sun->Direction();
    frame.sunDir[0] = dir.X();
    frame.sunDir[1] = dir.Y();
    frame.sunDir[2] = dir.Z();
    frame.sunDir[3] = 0;
    frame.sunEnabled = sunEnabled;

    return frame;
}

PassState EngineGL33::BuildPassState(const FrameState& frame, PassId passId)
{