/// <summary>
/// Converts a Matrix4x4 to MatrixFloats format
/// </summary>
/// <param name="matrix">The matrix to be converted</param>
/// <returns>The matrix converted into the MatrixFloats format</returns>
public static MatrixFloats ToMatrixFloats(Matrix4x4 matrix)
{
MatrixFloats matrixFloats = new MatrixFloats
{
a = matrix.GetColumn(0),
b = matrix.GetColumn(1),
c = matrix.GetColumn(2),
d = matrix.GetColumn(3)
};
return(matrixFloats);
}
/// <summary>
/// Converts the matrix to the MatrixFloats format
/// </summary>
/// <returns>The converted MatrixFloats</returns>
public static MatrixFloats ToAuraMatrixFloats(this Matrix4x4 matrix)
{
return(MatrixFloats.ToMatrixFloats(matrix));
}
/// <summary>
/// Collects the light's data so it will be packed into a common compute buffer by the lights manager and sent to the compute shader
/// </summary>
/// <param name="camera"></param>
private void PackParameters(Camera camera)
{
Vector4 color = (overrideColor ? overridingColor : _lightComponent.color) * _lightComponent.intensity * strength;
switch (Type)
{
case LightType.Directional:
{
_directionalLightParameters.color = color;
_directionalLightParameters.lightPosition = _lightComponent.transform.position;
_directionalLightParameters.lightDirection = _lightComponent.transform.forward;
Matrix4x4 lightToWorldMatrix = Matrix4x4.TRS(_lightComponent.transform.position, _lightComponent.transform.rotation, Vector3.one);
_directionalLightParameters.worldToLightMatrix = MatrixFloats.ToMatrixFloats(lightToWorldMatrix.inverse);
_directionalLightParameters.lightToWorldMatrix = MatrixFloats.ToMatrixFloats(lightToWorldMatrix);
_directionalLightParameters.shadowMapIndex = CastsShadows ? _shadowMapIndex : -1;
_directionalLightParameters.cookieMapIndex = -1;
if (CastsCookie)
{
_directionalLightParameters.cookieMapIndex = _cookieMapIndex;
_directionalLightParameters.cookieParameters.x = _lightComponent.cookieSize;
_directionalLightParameters.cookieParameters.y = _lightComponent.cookie.wrapMode == TextureWrapMode.Repeat ? 0 : 1;
}
_directionalLightParameters.enableOutOfPhaseColor = enableOutOfPhaseColor ? 1 : 0;
_directionalLightParameters.outOfPhaseColor = (Vector4)outOfPhaseColor * outOfPhaseColorStrength;
}
break;
case LightType.Spot:
{
_spotLightParameters.color = color;
_spotLightParameters.lightPosition = _lightComponent.transform.position;
_spotLightParameters.lightDirection = _lightComponent.transform.forward;
_spotLightParameters.lightRange = _lightComponent.range;
_spotLightParameters.lightCosHalfAngle = Mathf.Cos(_lightComponent.spotAngle * 0.5f * Mathf.Deg2Rad);
_spotLightParameters.angularFalloffParameters = new Vector2(customAngularFalloffThreshold, customAngularFalloffPower);
_spotLightParameters.distanceFalloffParameters = new Vector2(customDistanceFalloffThreshold, customDistanceFalloffPower);
_spotLightParameters.shadowMapIndex = -1;
if (CastsShadows)
{
Matrix4x4 worldToLight = Matrix4x4.TRS(_lightComponent.transform.position, _lightComponent.transform.rotation, Vector3.one).inverse;
Matrix4x4 proj = Matrix4x4.Perspective(_lightComponent.spotAngle, 1, _lightComponent.shadowNearPlane, _lightComponent.range);
Matrix4x4 clip = Matrix4x4.TRS(Vector3.one * 0.5f, Quaternion.identity, Vector3.one * 0.5f);
Matrix4x4 m = clip * proj;
m[0, 2] *= -1;
m[1, 2] *= -1;
m[2, 2] *= -1;
m[3, 2] *= -1;
Matrix4x4 worldToShadow = m * worldToLight;
_spotLightParameters.worldToShadowMatrix = MatrixFloats.ToMatrixFloats(worldToShadow);
_spotLightParameters.shadowMapIndex = _shadowMapIndex;
_spotLightParameters.shadowStrength = 1.0f - _lightComponent.shadowStrength;
}
_spotLightParameters.cookieMapIndex = -1;
if (CastsCookie)
{
_spotLightParameters.cookieMapIndex = _cookieMapIndex;
_spotLightParameters.cookieParameters.x = customCookieDistanceFalloffStartThreshold;
_spotLightParameters.cookieParameters.y = customCookieDistanceFalloffEndThreshold;
_spotLightParameters.cookieParameters.z = customCookieDistanceFalloffPower;
}
}
break;
case LightType.Point:
{
_pointLightParameters.color = color;
_pointLightParameters.lightPosition = _lightComponent.transform.position;
_pointLightParameters.lightRange = _lightComponent.range;
_pointLightParameters.distanceFalloffParameters = new Vector2(customDistanceFalloffThreshold, customDistanceFalloffPower);
_pointLightParameters.shadowMapIndex = -1;
if (CastsShadows)
{
Matrix4x4 worldMatrix = Matrix4x4.TRS(camera.transform.position, transform.rotation, Vector3.one * camera.nearClipPlane * 2);
_storePointLightShadowMapMaterial.SetMatrix("_WorldViewProj", GL.GetGPUProjectionMatrix(camera.projectionMatrix, true) * camera.worldToCameraMatrix * worldMatrix);
_storePointLightShadowMapMaterial.EnableKeyword("SHADOWS_CUBE");
_storePointLightShadowMapMaterial.EnableKeyword("POINT");
_copyShadowmapCommandBuffer.SetGlobalTexture("_ShadowMapTexture", BuiltinRenderTextureType.CurrentActive);
_copyShadowmapCommandBuffer.SetRenderTarget(shadowMapRenderTexture);
_copyShadowmapCommandBuffer.DrawMesh(storePointLightShadowMapMesh, worldMatrix, _storePointLightShadowMapMaterial, 0);
Matrix4x4 worldToShadow = Matrix4x4.TRS(_lightComponent.transform.position, _lightComponent.transform.rotation, Vector3.one * _lightComponent.range).inverse;
_pointLightParameters.worldToShadowMatrix = MatrixFloats.ToMatrixFloats(worldToShadow);
#if UNITY_2017_3_OR_NEWER
_pointLightParameters.lightProjectionParameters = new Vector2(_lightComponent.range / (_lightComponent.shadowNearPlane - _lightComponent.range), (_lightComponent.shadowNearPlane * _lightComponent.range) / (_lightComponent.shadowNearPlane - _lightComponent.range)); // From UnityShaderVariables.cginc:114
#endif
_pointLightParameters.shadowMapIndex = _shadowMapIndex;
_pointLightParameters.shadowStrength = 1.0f - _lightComponent.shadowStrength;
}
_pointLightParameters.cookieMapIndex = -1;
if (CastsCookie)
{
_pointLightParameters.cookieMapIndex = _cookieMapIndex;
_pointLightParameters.cookieParameters.x = customCookieDistanceFalloffStartThreshold;
_pointLightParameters.cookieParameters.y = customCookieDistanceFalloffEndThreshold;
_pointLightParameters.cookieParameters.z = customCookieDistanceFalloffPower;
}
}
break;
}
}
/// <summary>
/// Packs the data
/// </summary>
private void PackData()
{
_volumeData.transform = MatrixFloats.ToMatrixFloats(transform.worldToLocalMatrix);
_volumeData.shape = (int)volumeShape.shape;
_volumeData.falloffExponent = volumeShape.fading.falloffExponent;
switch (volumeShape.shape)
{
case VolumeTypeEnum.Box:
{
_volumeData.xPositiveFade = volumeShape.fading.xPositiveCubeFade;
_volumeData.xNegativeFade = volumeShape.fading.xNegativeCubeFade;
_volumeData.yPositiveFade = volumeShape.fading.yPositiveCubeFade;
_volumeData.yNegativeFade = volumeShape.fading.yNegativeCubeFade;
_volumeData.zPositiveFade = volumeShape.fading.zPositiveCubeFade;
_volumeData.zNegativeFade = volumeShape.fading.zNegativeCubeFade;
}
break;
case VolumeTypeEnum.Cone:
{
_volumeData.xPositiveFade = volumeShape.fading.angularConeFade;
_volumeData.zPositiveFade = volumeShape.fading.distanceConeFade;
}
break;
case VolumeTypeEnum.Cylinder:
{
_volumeData.xPositiveFade = volumeShape.fading.widthCylinderFade;
_volumeData.yPositiveFade = volumeShape.fading.yPositiveCylinderFade;
_volumeData.yNegativeFade = volumeShape.fading.yNegativeCylinderFade;
}
break;
case VolumeTypeEnum.Planar:
{
_volumeData.yPositiveFade = volumeShape.fading.heightPlaneFade;
}
break;
case VolumeTypeEnum.Sphere:
{
_volumeData.xPositiveFade = volumeShape.fading.distanceSphereFade;
}
break;
}
if (textureMask.enable != _previousTextureMaskState)
{
RaiseTextureMaskStateChangedEvent();
}
if (textureMask.texture != _previousTextureMask)
{
RaiseTextureMaskChangedEvent();
}
if (textureMask.enable)
{
Matrix4x4 localMatrix = textureMask.transform.Matrix;
_volumeData.textureData.transform = MatrixFloats.ToMatrixFloats(textureMask.transform.space == Space.World ? localMatrix * transform.localToWorldMatrix : localMatrix);
_volumeData.textureData.wrapMode = textureMask.wrapMode == VolumetricTextureWrapModeEnum.SameAsSource ? (textureMask.texture.wrapMode == TextureWrapMode.Clamp ? 0 : 1) : (int)textureMask.wrapMode;
_volumeData.textureData.filterMode = textureMask.filterMode == VolumetricTextureFilterModeEnum.SameAsSource ? (textureMask.texture.filterMode == FilterMode.Point ? 0 : 1) : (int)textureMask.filterMode;
_volumeData.textureData.clipOnAlpha = textureMask.clipComputationBasedOnAlpha ? 1 : 0;
_volumeData.textureData.clippingThreshold = textureMask.clippingThreshold;
}
_volumeData.textureData.index = textureMask.textureIndex;
_volumeData.noiseData.enable = noiseMask.enable ? 1 : 0;
if (noiseMask.enable)
{
Matrix4x4 localMatrix = noiseMask.transform.Matrix;
_volumeData.noiseData.transform = MatrixFloats.ToMatrixFloats(noiseMask.transform.space == Space.World ? localMatrix * transform.localToWorldMatrix : localMatrix);
_volumeData.noiseData.speed = noiseMask.speed;
_volumeData.noiseData.offset = noiseMask.offset;
}
_volumeData.injectDensity = density.injectionParameters.enable ? 1 : 0;
_volumeData.densityValue = density.injectionParameters.strength;
_volumeData.densityTextureLevelsParameters = density.injectionParameters.textureMaskLevelParameters.Data;
_volumeData.densityNoiseLevelsParameters = density.injectionParameters.noiseMaskLevelParameters.Data;
_volumeData.injectAnisotropy = anisotropy.injectionParameters.enable ? 1 : 0;
_volumeData.anisotropyValue = anisotropy.injectionParameters.strength;
_volumeData.anisotropyTextureLevelsParameters = anisotropy.injectionParameters.textureMaskLevelParameters.Data;
_volumeData.anisotropyNoiseLevelsParameters = anisotropy.injectionParameters.noiseMaskLevelParameters.Data;
_volumeData.injectColor = color.injectionParameters.enable ? 1 : 0;
_volumeData.colorValue = new Vector3(color.color.r, color.color.g, color.color.b) * color.injectionParameters.strength;
_volumeData.colorTextureLevelsParameters = color.injectionParameters.textureMaskLevelParameters.Data;
_volumeData.colorNoiseLevelsParameters = color.injectionParameters.noiseMaskLevelParameters.Data;
}